Gree GMV5 HR Service Manual
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Gree GMV5 HR Service Manual

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GMV5 HR HEAT RECOVERY UNITS
(GC201808-III)
Capacity: 72000Btu/h~360000Btu/h
Rated Frequency: 60Hz
Operation Range: Cooling: -5~52° C
Heating: -20~24° C

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  • Page 1 GMV5 HR HEAT RECOVERY UNITS (GC201808-III) Capacity: 72000Btu/h~360000Btu/h Rated Frequency: 60Hz Operation Range: Cooling: -5~52° C Heating: -20~24° C...

  • Page 2: Table Of Contents

    CONTENTS PREFACE ....................... 1 SAFTY PRECAUTIONS .................. 1 CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS ....5 1 BASIC OPERATING PRINCIPLE ....................5 2 INTERNAL PIPING DESIGN OF THE UNITS ................7 3 BASIC PARAMETERS OF UNIT ....................11 4 ELECTRICAL PARAMETERS .....................
  • Page 3 5 Fitting pipe between Outdoor Unit and the First Manifold ............61 PART 6 PIPE INSTALLATION AND INSULATION ........66 1 PIPE INSTALLATION FOR THE COOLING SYSTEM .............. 66 2 PIPE INSTALLATION FOR THE CONDENSATE WATER SYSTEM ........74 3 INSULATION SYSTEM ........................ 78 PART 7 ELECTRIC AND CONTROLLER INSTALLATION ......
  • Page 4 4 ASSEMBLING AND DISASSEMBLING KEY PARTS OF ODUS .......... 312 5 UNIT MAINTENANCE ........................ 325 PART 4 APPENDIXES ................326 1 MINUTES ABOUT A DEBUG SOLUTION CONFIRMATION MEETING ......326 2 VISUAL INSPECTION CHECKLIST OF THE DEBUG SYSTEM .......... 326 3 DEBUG PARAMETER RECORD LIST ..................

  • Page 5: Preface

    GREE GMV5 HR HEAT RECOVERY UNITS PREFACE This manual specifies safe operation requirements for GMV5 series VRF units from perspectives of engineering and installation, commissioning and maintenance, as well as basic principles and implementation methods. Professional operators must abide by relevant national (local) safety requirements and technical specifications set forth in this manual during operations;...
  • Page 6  If the pressure switch, thermal switch, or other protection device is shorted and operated forcibly, or parts other than those specified by GREE are used, fire or explosion may result. Ventilate before operating air conditioner when gas leaked out.
  • Page 7 GREE GMV5 HR HEAT RECOVERY UNITS Do not open the inlet grille of the product uring operation. (Do not touch the electrostatic filter, if the unit is so equipped.)  There is risk of physical injury, electric shock, or product failure.
  • Page 8 GREE GMV5 HR HEAT RECOVERY UNITS Make the connections securely so that the outside force of the cable may not be applied to the terminals.  Inadequate connection and fastening may generate heat and cause a fire. Be sure the installation area does not deteriorate with age.

  • Page 9: Chapter 1 Introduction To Basic Features Of Units

    GREE GMV5 HR HEAT RECOVERY UNITS CHAPTER 1 INTRODUCTION TO BASIC FEATURES OF UNITS 1 BASIC OPERATING PRINCIPLE Outdoor units of GMV5 VRF air conditioner can be implemented by combining multiple modules in parallel. Similarly, indoor units (IDUs) consist of multiple units connecting in parallel. The operating principle is as follows: When an IDU is operating in cooling mode, the outdoor unit (ODU) can correspondingly enable the outdoor module based on the operating load requirement of the IDU.
  • Page 10 GREE GMV5 HR HEAT RECOVERY UNITS Power Supply Model Name Product Code Appearance (V, Ph, Hz) GMV-Q264WM/B-F(U) 208/230V 3ph 60Hz GMV-Q264WM/B-U(U) 460V 3ph 60Hz GMV-Q288WM/B-F(U) 208/230V 3ph 60Hz GMV-Q288WM/B-U(U) 460V 3ph 60Hz GMV-Q312WM/B-F(U) 208/230V 3ph 60Hz GMV-Q312WM/B-U(U) 460V 3ph 60Hz...

  • Page 11: Internal Piping Design Of The Units

    GREE GMV5 HR HEAT RECOVERY UNITS 2 INTERNAL PIPING DESIGN OF THE UNITS 2.1 Piping Diagram of GMV-Q72WM/B-F(U)\ GMV-Q96WM/B-F(U) \ GMV-Q72WM/B-U(U) and GMV-Q96WM/B-U(U)
  • Page 12 GREE GMV5 HR HEAT RECOVERY UNITS 2.2 Piping Diagram of GMV-Q120WM/B-F(U)\ GMV-Q120WM/B-U(U) and GMV-Q144WM/B1-F(U)
  • Page 13 GREE GMV5 HR HEAT RECOVERY UNITS 2.3 Piping Diagram of GMV-Q168WM/B1-F(U) 2.4 Names and Main Functions of Components Name Main Function Adjusts its own rotational speed based on the actual Compressor requirement of the system to implement capacity control. Maintains a proper oil temperature in the compressor when the...
  • Page 14 GREE GMV5 HR HEAT RECOVERY UNITS Name Main Function Used for the switching between the cooling and heating Four-way valve functions of system IDU. Heat exchanger Used for outdoor heat exchange. Strengthens heat exchanging. Defrosting temperature sensor Used for defrosting detection.

  • Page 15: Basic Parameters Of Unit

    GREE GMV5 HR HEAT RECOVERY UNITS 3 BASIC PARAMETERS OF UNIT 3.1 Basic Parameters of ODU Outdoor Units_Heat Recovery Model GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) GMV-Q120WM/B-F(U) Module combination GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) GMV-Q120WM/B-F(U) Btu/h 72000 96000 120000 Nominal Cooling Capacity ① 21.1 28.1 35.2 Rated Cooling Capacity...
  • Page 16 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) GMV-Q120WM/B-F(U) Module combination GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) GMV-Q120WM/B-F(U) 1340×765×1605 1340×765×1605 1340×765×1605 Dimensions External Dimension 52-3/4×30-1/8×63-1/5 52-3/4×30-1/8×63-1/5 52-3/4×30-1/8×63-1/5 (width× depth× 1420×840×1775 1420×840×1775 1420×840×1775 Packaging Dimension height) 55-7/8×33-1/8×69-7/8 55-7/8×33-1/8×69-7/8 55-7/8×33-1/8×69-7/8 Net Weight lbs.
  • Page 17 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q144WM/B1-F(U) GMV-Q168WM/B1-F(U) Module combination GMV-Q144WM/B1-F(U) GMV-Q168WM/B1-F(U) 8240 9417 Max. external static pressure in.W.G 0.328 0.328 ° C -5~52 -5~52 Cooling Ambient ° F 23~125.6 23~125.6 temperature ° C -20~24 -20~24...
  • Page 18 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q144WM/B-F(U) GMV-Q168WM/B-F(U) GMV-Q192WM/B-F(U) GMV-Q72WM/B-F(U) GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) Module combination + GMV-Q72WM/B-F(U) +GMV-Q96WM/B-F(U) +GMV-Q96WM/B-F(U) Btu/h 144000 168000 192000 Nominal Cooling Capacity 42.2 49.1 56.3 Rated Cooling Btu/h 134000 157000 180000 Capacity Btu/h...
  • Page 19 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q144WM/B-F(U) GMV-Q168WM/B-F(U) GMV-Q192WM/B-F(U) GMV-Q72WM/B-F(U) GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) Module combination + GMV-Q72WM/B-F(U) +GMV-Q96WM/B-F(U) +GMV-Q96WM/B-F(U) 55-7/8×33-1/8×69-7/8 55-7/8×33-1/8×69-7/8 55-7/8×33-1/8×69-7/8 +55-7/8×33-1/8×69-7/8 +55-7/8×33-1/8×69-7/8 +55-7/8×33-1/8×69-7/8 302+302 302+310 310+310 Net Weight lbs. 666+666 666+683 683+683 Weight 317+317 317+325...
  • Page 20 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q216WM/B-F(U) GMV-Q240WM/B-F(U) GMV-Q264WM/B-F(U) GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) GMV-Q120WM/B-F(U) Module combination +GMV-Q96WM/B-F(U) +GMV-Q120WM/B-F(U) +GMV-Q120WM/B-F(U) +GMV-Q96WM/B-F(U) pressure in.W.G 0.328 0.328 0.328 ° C -5~52 -5~52 -5~52 Cooling Ambient ° F 23~125.6 23~125.6 23~125.6 temperature °...
  • Page 21 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q288WM/B-F(U) GMV-Q312WM/B-F(U) GMV-Q96WM/B-F(U) GMV-Q96WM/B-F(U) Module combination +GMV-Q96WM/B-F(U) +GMV-Q96WM/B-F(U) +GMV-Q96WM/B-F(U) +GMV-Q120WM/B-F(U) Btu/h 288000 312000 Nominal Cooling Capacity 84.4 91.4 Rated Cooling Btu/h 270000 291000 Capacity Btu/h 324000 351000 Nominal Heating Capacity 95.0...
  • Page 22 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q288WM/B-F(U) GMV-Q312WM/B-F(U) GMV-Q96WM/B-F(U) GMV-Q96WM/B-F(U) Module combination +GMV-Q96WM/B-F(U) +GMV-Q96WM/B-F(U) +GMV-Q96WM/B-F(U) +GMV-Q120WM/B-F(U) 55-7/8×33-1/8×69-7/8+55-7/8×33 55-7/8×33-1/8×69-7/8+55-7/8×33 -1/8×69-7/8+55-7/8×33-1/8×69-7/8 -1/8×69-7/8+55-7/8×33-1/8×69-7/8 310+310+310 310+310+360 Net Weight lbs. 683+683+683 683+683+794 Weight 325+325+325 325+325+375 Gross Weight lbs. 716+716+716 716+716+827 Maximum qty of connected indoor...
  • Page 23 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q336WM/B-F(U) GMV-Q360WM/B-F(U) GMV-Q96WM/B-F(U) GMV-Q120WM/B-F(U) Module combination +GMV-Q120WM/B-F(U) +GMV-Q120WM/B-F(U) + GMV-Q120WM/B-F(U) +GMV-Q120WM/B-F(U) Max. external static pressure in.W.G 0.328 0.328 ° C -5~52 -5~52 Cooling Ambient ° F 23~125.6 23~125.6 temperature ° C...
  • Page 24 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U) Module combination GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U) Nominal Cooling Capacity Btu/h 72000 96000 120000 ① 21.1 28.1 35.2 Rated Cooling Capacity Btu/h 67000 90000 111000 Btu/h 81000 108000 135000 Nominal Heating Capacity 23.7...
  • Page 25 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U) Module combination GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U) Gross Weight lbs. Maximum qty of connected indoor units unit High Pressure Protection High pressure sensor, High pressure switch Protection Compressor /Fan...
  • Page 26 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q144WM/B-U(U) GMV-Q168WM/B-U(U) GMV-Q192WM/B-U(U) GMV-Q72WM/B-U(U) GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) Module combination +GMV-Q72WM/B-U(U) +GMV-Q96WM/B-U(U) +GMV-Q96WM/B-U(U) ° F -4~75.2 -4~75.2 -4~75.2 Refrigerant Type R410A R410A R410A 9.6+9.6 9.6+11.2 11.2+11.2 Refrigerant Charge Refrigerant Volume lbs. 21+21...
  • Page 27 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q216WM/B-U(U) GMV-Q240WM/B-U(U) GMV-Q264WM/B-U(U) GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U) Module combination +GMV-Q96WM/B-U(U) +GMV-Q120WM/B-U(U) +GMV-Q120WM/B-U(U) +GMV-Q96WM/B-U(U) Heating Power Input 7.85+10.42 10.42+10.42 5.80+7.85+7.85 Sound Pressure dB(A) Level Power Supply 460V 3~ 60Hz Type Inverter scroll type...
  • Page 28 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q216WM/B-U(U) GMV-Q240WM/B-U(U) GMV-Q264WM/B-U(U) GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U) Module combination +GMV-Q96WM/B-U(U) +GMV-Q120WM/B-U(U) +GMV-Q120WM/B-U(U) +GMV-Q96WM/B-U(U) lbs. 728+849 849+849 705+728+728 Maximum qty of connected indoor unit units High Pressure High pressure sensor, High pressure switch...
  • Page 29 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q288WM/B-U(U) GMV-Q312WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q96WM/B-U(U) Module combination +GMV-Q96WM/B-U(U) +GMV-Q96WM/B-U(U) +GMV-Q96WM/B-U(U) +GMV-Q120WM/B-U(U) °F -4~75.2 -4~75.2 Refrigerant Type R410A R410A 11.2+11.2+11.2 11.2+11.2+11.7 Refrigerant Charge Refrigerant Volume lbs. 25+25+25 25+25+25.79 Control 34.9 34.9 Low pressure Gas...
  • Page 30 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q336WM/B-U(U) GMV-Q360WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U) Module combination +GMV-Q120WM/B-U(U) +GMV-Q120WM/B-U(U) +GMV-Q120WM/B-U(U) +GMV-Q120WM/B-U(U) Cooling Power Input 7.30+9.58+9.58 9.58+9.58+9.58 Heating Power Input 7.85+10.42+10.42 10.42+10.42+10.42 Sound Pressure dB(A) Level Power Supply 460V 3~ 60Hz Type...
  • Page 31 GREE GMV5 HR HEAT RECOVERY UNITS Outdoor Units_Heat Recovery Model GMV-Q336WM/B-U(U) GMV-Q360WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U) Module combination +GMV-Q120WM/B-U(U) +GMV-Q120WM/B-U(U) +GMV-Q120WM/B-U(U) +GMV-Q120WM/B-U(U) High Pressure High pressure sensor, High pressure switch Protection Protection Compressor /Fan Over-current protection, Over-heat protection Devices Inverter Over-current protection, Over-heat protection, High/Low voltage protection, It refers to the operation power of compressor under ARI test conditions (Condensing temp.
  • Page 32 GREE GMV5 HR HEAT RECOVERY UNITS One-to-four Mode Exchanger NCHS4B (U) One-to-eight Mode Exchanger NCHS8B (U) Model NCHS1B(U) NCHS2B(U) NCHS4B(U) NCHS8B(U) Max. IDU Branches No. of connectable IDU of each branch Total Connectable IDU 14.2 14.2 14.2 14.2 Max. Capacity of each...
  • Page 33 GREE GMV5 HR HEAT RECOVERY UNITS Model (Single) GMV-Q360WM/B-F(U) GMV-Q120WM/B-F(U) Model (Combined) + GMV-Q120WM/B-F(U) + GMV-Q120WM/B-F(U) Model (Single) GMV-Q144WM/B-U(U) GMV-Q168WM/B-U(U) GMV-Q192WM/B-U(U) GMV-Q72WM/B-U(U) GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) Model (Combined) + GMV-Q72WM/B-U(U) + GMV-Q96WM/B-U(U) + GMV-Q96WM/B-U(U) Model (Single) GMV-Q216WM/B-U(U) GMV-Q240WM/B-U(U) GMV-Q264WM/B-U(U) GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) GMV-Q120WM/B-U(U)

  • Page 34: Electrical Parameters

    GREE GMV5 HR HEAT RECOVERY UNITS 4 ELECTRICAL PARAMETERS 4.1 Power Cable Wire Gauge and Circuit Breaker Selection of outdoor unit Minimum Circuit Maximum Overcurrent Power Supply Fuse Capacity Ampacity Protection Outdoor units V/Ph/Hz GMV-Q72WM/B-F(U) 208V/230V 3~ 60Hz GMV-Q96WM/B-F(U) 208V/230V 3~ 60Hz...
  • Page 35 GREE GMV5 HR HEAT RECOVERY UNITS 4.2 Circuit Diagram 4.2.1 Circuit Diagram of ODU The actual wiring should always refer to the wiring diagram of the unit. Circuit diagram of GMV-Q72WM/B-F(U) and GMV-Q96WM/B-F(U) Circuit diagram of GMV-Q120WM/B-F(U)
  • Page 36 GREE GMV5 HR HEAT RECOVERY UNITS Circuit diagram of GMV-Q144WM/B1-F(U) Circuit diagram of GMV-Q168WM/B1-F(U)
  • Page 37 GREE GMV5 HR HEAT RECOVERY UNITS Circuit diagram of GMV-Q72WM/B-U(U) and GMV-Q96WM/B-U(U) Circuit diagram of GMV-Q120WM/B-U(U) When conducting maintenance based on above circuit diagrams, units must be power-off. Please strictly following the circuit diagrams when reconnecting the wires, otherwise, electric shock may occur.

  • Page 38: Optional Accessories

    GREE GMV5 HR HEAT RECOVERY UNITS 5 OPTIONAL ACCESSORIES GMV5 series VRF units support the following optional accessories: Export Model Remark ML01R Mode FQ01Na/A, FQ02Na/A, FQ03Na/A, FQ04Na/A, For model selection, refer to Pipe Manifold Converter FQ05Na/A,FQ06Na/A , FQ07Na/A Selection. FQ01A/A...
  • Page 39 GREE GMV5 HR HEAT RECOVERY UNITS Pipe connection diagram of outdoor modules (2) Each ODU system can be connected to multiple IDUs. Detailed information about the number of units to be connected and capacity ranges is shown in the following table:...

  • Page 40: Precautions On Refrigerant Leakage

    GREE GMV5 HR HEAT RECOVERY UNITS 7 PRECAUTIONS ON REFRIGERANT LEAKAGE (1) Personnel related to air conditioning engineering design and installation operators must abide by the safety requirement for preventing refrigerant leakage specified in local laws and regulations. (2) The units adopt the R410A refrigerant, which is nonflammable and nontoxic. However, the space for refrigerant leakage must be sufficient to ensure that the refrigerant concentration does not exceed that specified in the safety requirement;...

  • Page 41: Unit Operating Temperature

    GREE GMV5 HR HEAT RECOVERY UNITS  Change Indoor Unit type: Installation position should be over 6.6ft from the floor (Wall mounted type → Cassette type)  Adoption of ventilation system: Choose ordinary ventilation system or building ventilation system ...

  • Page 42: Chapter 2 Installation

    GREE GMV5 HR HEAT RECOVERY UNITS CHAPTER 2 INSTALLATION PART 1 ENGINEERING INSTALLATION PREPARATION 1 INSTALLATION SAFETY Personnel and property safety are highly concerned during the entire installation process. Installation implementation must abide by relevant national safety regulations to ensure personnel and property safety.

  • Page 43: Cooperation Between Different Professions

    GREE GMV5 HR HEAT RECOVERY UNITS Installation Problem Possible Consequence The system cannot correctly control the flow allocation; the compressor may Incorrect amount of refrigerant is be operating under over-heating environment or running when the filled. refrigerant flows back to the compressor..
  • Page 44 GREE GMV5 HR HEAT RECOVERY UNITS 3.1 Requirements for cooperation with civil engineering: (1) The riser should be installed in the air conditioning tube well, and the horizontal pipe should be placed in the ceiling, if possible. (2) A place should be reserved for the ODU base to prevent the waterproof layer or insulating layer on the roof from being damaged in later phase of installation.
  • Page 45 GREE GMV5 HR HEAT RECOVERY UNITS Construction Air-conditioning Engineering allocation Engineering cooperation meeting Engineering meeting about socket installation and insertion Working drawing preparation Iron frame socket installation Pipe laying Indoor unit installation Frame reinforcement Refrigerant piping Water drainage piping Piping...

  • Page 46: Onsite Review Of Design Drawing

    GREE GMV5 HR HEAT RECOVERY UNITS 4 ONSITE REVIEW OF DESIGN DRAWING Installation personnel must carefully read and understand the design scheme and drawings provided by engineering designers, and prepare detailed and feasible construction organization design after reviewing the onsite status.

  • Page 47: Construction Organization Process

    GREE GMV5 HR HEAT RECOVERY UNITS 5 CONSTRUCTION ORGANIZATION PROCESS Design disclosure Material purchasing Review of onsite installation places Connecting pipe Outdoor unit installation Indoor unit installation installation Welding Remote Communication Drain pipe Power cable Power cable control cables Purging, pressure maintaining...

  • Page 48: Part 2 Material Selection

    GREE GMV5 HR HEAT RECOVERY UNITS PART 2 MATERIAL SELECTION 1 REQUIREMENT FOR SELECTING CONSTRUCTION MATERIALS The materials, equipment and instruments used during air conditioning engineering construction must have certifications and test reports. Products with fireproof requirements must be provided with fireproof inspection certificates and must meet national and relevant compulsory standards.

  • Page 49: Part 3 Installation Space Requirement

    GREE GMV5 HR HEAT RECOVERY UNITS (2) Selection for the communication cable between the indoor unit and wired controller: Total length of communication line Material type Wire size Remarks between IDU unit and wired controller L m(feet) 1. Total length of communication line can't exceed 250m (820-1/5feet).

  • Page 50: Odu Dimensions And Installation Hole Size

    GREE GMV5 HR HEAT RECOVERY UNITS 2 ODU DIMENSIONS AND INSTALLATION HOLE SIZE External and installation dimensions of GMV-Q72WM/B-F(U) / GMV-Q96WM/B-F(U) / GMV-Q120WM/B-F(U) / GMV-Q144WM/B1-F(U) / GMV-Q72WM/B-U(U) / GMV-Q96WM/B-U(U) and GMV-Q120WM/B-U(U): Unit: mm(in.) External and installation dimensions of GMV-Q168WM/B1-F(U): Unit: mm(in.)

  • Page 51: Installation Space Requirement For Odu

    GREE GMV5 HR HEAT RECOVERY UNITS 3 INSTALLATION SPACE REQUIREMENT FOR ODU (1) If all sides of the ODU (including the top) are surrounded by walls, process according to the following requirements for installation space: Installation space requirements for the single-module unit...
  • Page 52 GREE GMV5 HR HEAT RECOVERY UNITS (59inch) or the unit is not set in an open space, air outlet pipe is required to be installed in order to keep good ventilation (See Fig.2). Fig.1 Fig.2 Installation space requirements of multiple outdoor units To ensure smooth ventilation, an open space must be ensured above the unit top, and there is no barrier against wind.
  • Page 53 GREE GMV5 HR HEAT RECOVERY UNITS Fig.9 (3) Considering the seasonal wind in outdoor unit installation Incorrect ： In this case, the defrusing duration will be extended Seasonal wind Seasonal wind Return air Return air Return air Return air Return air...
  • Page 54 GREE GMV5 HR HEAT RECOVERY UNITS (4) Anti-monsoon installation requirements for unit connecting exhaust duct: (5) Considering snow in outdoor unit installation (6) During the installation of the ODU, induced and exhaust pipes must be connected. In addition, the aperture opening rate of shutters must be at least 80%, and the angle between the shutters and the horizontal plane should be less than 20°...
  • Page 55 GREE GMV5 HR HEAT RECOVERY UNITS The steel-plate ventilating duct is designed based on the unit and engineering requirement, and is installed properly according to the engineering standards. Based on the unit dimensions and the size of steel-plate ventilating duct, prepare materials such as canvas casing, tin foil, steel bar and tapping screw, as well as tools such as hand-operated electric drill, air screw driver and screwdriver.
  • Page 56 GREE GMV5 HR HEAT RECOVERY UNITS Step 2 Step 3 Method 2: Install the ODU (2) and steel-plate ventilating duct (1). Take out the grille from the top of the top case component. Use the prepared canvas casing inside out (4) to cover the surroundings over the top of the unit.
  • Page 57 GREE GMV5 HR HEAT RECOVERY UNITS Step 1 Step 2 Step 3 When the effective area of air intake is less than 70% of the total air intake area of all ODUs, an induced draft fan is also required. The total air input of induced draft fan should be no less than 80% of the total supply air rate.
  • Page 58 GREE GMV5 HR HEAT RECOVERY UNITS Be very careful while carrying the product. ① Do not have only one person carry product if it is more than 20kg (44lbs). ② PP bands are used to pack some products. Do not use them as a mean for transportation because they are dangerous.

  • Page 59: Part 4 Requirements On Foundation Installation

    GREE GMV5 HR HEAT RECOVERY UNITS PART 4 REQUIREMENTS ON FOUNDATION INSTALLATION 1 ODU FOUNDATION The concrete foundation of the ODU must be strong enough. Ensure that the drainage is smooth and that the ground drainage or floor drainage is not affected.

  • Page 60: Odu Fixing

    GREE GMV5 HR HEAT RECOVERY UNITS ① Install where it can sufficiently support the weight of the outdoor unit.If the support strength is not enough, the outdoor unit may drop and hurt people. ② Install where the outdoor unit may not fall in strong wind or earthquake.If there is a fault in the supporting conditions, the outdoor unit may fall and hurt people.

  • Page 61: Part 5 Piping Connection

    GREE GMV5 HR HEAT RECOVERY UNITS PART 5 PIPING CONNECTION 1 Schematic Diagram of Piping Connection 2 Schematic Diagram of Piping Sequence GMV-Q72WM/B-F(U) /GMV-Q96WM/B-F(U)/GMV-Q120WM/B-F(U) and GMV-Q144WM/B1-F(U); GMV-Q72WM/B-U(U) /GMV-Q96WM/B-U(U) and GMV-Q120WM/B-U(U)

  • Page 62: Allowable Pipe Length And Drop Height Among Indoor And Outdoor Units

    GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q168WM/B1-F(U); 3 Allowable pipe length and drop height among indoor and outdoor units Y type branch joint is adopted to connected indoor and outdoor units. Connecting method is shown in the figure below. Remark: Equivalent length of one Y-type manifold is about 0.5m(1-3/4feet).
  • Page 63 GREE GMV5 HR HEAT RECOVERY UNITS Allowable Value R410A Refrigerant System Fitting Pipe m(feet) L1+L2+L3+L4+…+L10+A11+A12+…+D2 ≤1000(3280-3/4) Total length (actual length) of fitting pipe 1+D22 ≤165(541-1/4) Actual length Length of farthest fitting —— pipe m(feet) ≤190(623-1/4) Equivalent length Difference between the pipe length from the first branch of IDU to the farthest IDU and the pipe ≤40(131-1/4)

  • Page 64: Connection Pipe Among Outdoor Modules

    GREE GMV5 HR HEAT RECOVERY UNITS Size of connection between outdoor unit and the first indoor branch Outdoor Model Low pressure gas pipe mm(in.) Liquid pipe mm(in.) High pressure gas pipe mm(in.) Φ22.2(7/8) Ф34.9(1-3/8) GMV-Q336WM/B-F(U) No need to enlarge pipe size Φ22.2(7/8)

  • Page 65: Fitting Pipe Between Outdoor Unit And The First Manifold

    GREE GMV5 HR HEAT RECOVERY UNITS 5 Fitting pipe between Outdoor Unit and the First Manifold 5.1 Size requirement for branch pipe and piping (main pipe) (1) Connection sketch map of single-module system Connection sketch map of multi-module system (2) Select appropriate pipe between outdoor unit and the first indoor branch (“L”) as per the pipe size of outdoor unit.
  • Page 66 GREE GMV5 HR HEAT RECOVERY UNITS Pipe between outdoor unit and the first indoor branch Basic module Low pressure gas pipe Liquid pipe High pressure gas pipe mm(inch) mm(inch) mm(inch) Φ19.05(3/4) Φ9.52(3/8) Φ15.9(5/8) GMV-Q72WM/B-F(U) Φ22.2(7/8) Φ9.52(3/8) Φ19.05(3/4) GMV-Q96WM/B-F(U) Φ28.6(1-1/8) Φ12.7(1/2) Φ22.2(7/8)
  • Page 67 GREE GMV5 HR HEAT RECOVERY UNITS Size of connection pipe between branches of outdoor module Total rated capacity of upstream Low pressure gas pipe Liquid pipe High pressure gas pipe modules: Q ( Btu/h ) mm(in.) mm(in.) mm(in.) Φ34.9(1-3/8) Φ15.9(5/8) Φ28.6(1-1/8)
  • Page 68 GREE GMV5 HR HEAT RECOVERY UNITS (6) Branch selection of mode exchanger (“A1, A2”) Select branch of mode exchanger as per total capacity of downstream indoor unit(s). Please refer to the following table. Model selection for branch “A1/A2”of mode exchanger;...
  • Page 69 GREE GMV5 HR HEAT RECOVERY UNITS (11) Piping between indoor branch and indoor unit (“e/f/i/j/k”) Size of connection pipe between indoor branch and indoor unit should be consistent with the connection pipe of indoor unit. Piping between indoor branch and indoor unit “e/f/i/j/k”...

  • Page 70: Part 6 Pipe Installation And Insulation

    GREE GMV5 HR HEAT RECOVERY UNITS 5.2.1 Branch selection of indoor unit of mode exchanger (“C1”) R410A refrigerant system capacity of down steam indoor units: X (Btu/h) Model Y-type branch 48500<X≤96000 FQ01B/A 5.2.2 Piping size between mode exchanger and downstream indoor unit (“m”)
  • Page 71 GREE GMV5 HR HEAT RECOVERY UNITS (4) The refrigerant pipe must be laid away from the manhole of the unit so that sufficient space can be reserved for maintenance. (5) The riser should be installed in the air conditioning tube well, and the horizontal pipe should be placed in the ceiling, if possible.
  • Page 72 GREE GMV5 HR HEAT RECOVERY UNITS 1.2.2 Pipe Cleaning Cleaning with a piece of silk cloth: Wrap a thin steel wire with a piece of clean silk cloth. Crumple the cloth into a lump with diameter larger than the pipe calibre. Apply several drops of chlorylene to the cloth.
  • Page 73 GREE GMV5 HR HEAT RECOVERY UNITS (2) Burrs and turn ups inside the pipe opening must be cleared. (3) Install flaring nuts in the pipe before pipe flaring. (4) The flared opening must be concentric with the main pipe. No eccentricity is allowed.
  • Page 74 GREE GMV5 HR HEAT RECOVERY UNITS ① If the foot pedal is 2 m (6.5feets) or more from the ground, there must be three points of support. ② The foot pedal must be tightened securely with the ladder. ③ Do not perform operations on the top of the ladder.
  • Page 75 GREE GMV5 HR HEAT RECOVERY UNITS A: External Diameter of the Pipe B: Minimum Insertion Depth D-A: Gap between Pipes inch inch inch 6.35 0.24 9.52 0.05-0.21 0.002-0.008 0.28 12.7 15.8 0.32 19.05 0.05-0.27 0.002-0.01 22.2 0.39 25.4 28.6 1-1/8 0.47...
  • Page 76 GREE GMV5 HR HEAT RECOVERY UNITS the same elevation without inclination. The length of a straight pipe between two manifolds cannot be less than 500 mm(19-11/16in.). The length of a straight pipe before the main pipe port of the manifold cannot be less than 500 mm(19-11/16in.).
  • Page 77 Then insert the copper pipe to proper depth. A concave bag for positioning is available to the manifold purchased from Gree. (8) Because the manifold structure is complex, perform with care to ensure tight insulation.

  • Page 78: Pipe Installation For The Condensate Water System

    GREE GMV5 HR HEAT RECOVERY UNITS 1.3.8 Refrigerant pipe installation During refrigerant pipe installation, ensure a distance above 500 mm (19.7inch) between the pipe and the electric box of the unit for maintenance. In a case when the space is not enough, the final piping way must be determined by the technical personnel.
  • Page 79 GREE GMV5 HR HEAT RECOVERY UNITS (5) Distance between Hangers ≤25.4 ≥31.8 31.8>Φ>25.4 External Diameter of the Pipe ≤1 ≥1-1/4 inch 1-1/4>Φ>1 1000 1500 Distance between Horizontal Pipes inch 31-1/2 39-3/8 1500 2000 Distance between Vertical Pipes inch 78-3/4 There are at least two hangers for each vertical pipe.
  • Page 80 GREE GMV5 HR HEAT RECOVERY UNITS 2.3 Other Requirements (1) Ensure an inclination degree of more than 1% when connecting the drain pipe to the IDU. (2) When connecting the drain pipe to that of the IDU, fix the pipes with the bands provided upon delivery instead of using the glue to facilitate further maintenance.
  • Page 81 GREE GMV5 HR HEAT RECOVERY UNITS The connection between the drain pipe and that of the IDU is shown in the following figure. Apply insulation materials to the condensate water pipe joints to prevent dewing. d. Insulation for connection between the drain pipe and that of the IDU is shown in the following figure.

  • Page 82: Insulation System

    GREE GMV5 HR HEAT RECOVERY UNITS 2.5 Requirements on Independent Drainage for Each IDU Requirements on independent drainage design for each IDU are as follows: (1) There must be a proper inclination for the drain pipe. (2) The drain pipe must be installed to facilitate drainage to the largest extent and be as short as possible.
  • Page 83 GREE GMV5 HR HEAT RECOVERY UNITS must be 50 mm (1.97inch) or more to ensure secure connection. (6) Use glue to bond the insulation material at the water outlet to the unit to prevent dewing. (7) Wrap joints of indoor/outdoor units with insulation materials. There must be no gap between the joint and the wall of the indoor/outdoor unit, as shown in the following figure.

  • Page 84: Part 7 Electric And Controller Installation

    GREE GMV5 HR HEAT RECOVERY UNITS PART 7 ELECTRIC AND CONTROLLER INSTALLATION ① Follow ordinance of your governmental organization for technical standard related to electrical equipment, wiring regulations and guidance of each electric power company. ② Make sure to use specified wires for connections so that no external force is imparted to terminal connections.

  • Page 85: Installation Of The Power Cable

    GREE GMV5 HR HEAT RECOVERY UNITS Method 2: Use different types of cables. The diameter of the power cable is larger than that of the communication cable. Alternatively, adopt three cores or more for the power cable and two cores for the communication cable.
  • Page 86 GREE GMV5 HR HEAT RECOVERY UNITS Other places deemed as unreliable (5) The power cable and the communication cable must be laid separately with a distance of greater than 200mm (7.87inch). Otherwise, the communication of the unit will be affection.
  • Page 87 GREE GMV5 HR HEAT RECOVERY UNITS (1) External Connection for Individual Units...
  • Page 88 GREE GMV5 HR HEAT RECOVERY UNITS ① Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). ② Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.
  • Page 89 GREE GMV5 HR HEAT RECOVERY UNITS ① Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage, Communication disorder by noise effect and motor current leakage (without connection to pipe). ② Don't install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply.

  • Page 90: Installation Of The Communication System

    GREE GMV5 HR HEAT RECOVERY UNITS 3 INSTALLATION OF THE COMMUNICATION SYSTEM The CAN communication network is adopted for GMV5 VRF system. Manual DIP or identification on polarities of the communication power is not required for the IDU. Only the function DIP needs to be set for the ODU.
  • Page 91 GREE GMV5 HR HEAT RECOVERY UNITS 3.2 Connection of Communication Cables The communication bus of indoor and ODUs must be connected in series instead of in star mode. The last IDU of the bus shall be connected to a matching resistor (placed in the package of the ODU).
  • Page 92 GREE GMV5 HR HEAT RECOVERY UNITS...
  • Page 93 GREE GMV5 HR HEAT RECOVERY UNITS 3.3 Communication Cable Connection Method and Procedure 3.3.1 Communication cable connection between the IDUs and ODUs The communication cable between the IDUs and ODUs is connected via interface D1/D2 on the terminal block XT2. Connection modes for the single-module system and multi-module system are shown in the following figures.
  • Page 94 GREE GMV5 HR HEAT RECOVERY UNITS Connection of communication for single-module system and multi-module converter system: Connection of communication for multi-module system and multi-module converter system...
  • Page 95 GREE GMV5 HR HEAT RECOVERY UNITS NOTICE! ① If there are multiple modules for the modular ODU, the master unit must be the first ODU module on the communication cable and cannot be connected to the IDU. (The master unit is set by SA8 on the main board of the ODU.)
  • Page 96 GREE GMV5 HR HEAT RECOVERY UNITS Two wired controllers controlling multiple IDUs When two wired controllers control multiple IDUs, the wired controllers can be connected to any IDU which is in the same series. Set of the two wired controller to the secondary wired controller. The number of IDUs controlled by the wired controller cannot exceed 16.
  • Page 97 GREE GMV5 HR HEAT RECOVERY UNITS NOTICE! ① All wired controllers are set to primary wired controllers upon delivery. ② In parameter setting status, Fan, Timer, Sleep, and Swing buttons are unavailable. Press the “ON/OFF” button to return to the home page without executing the action of power-on or power-off.

  • Page 98: Part 8 Vacuumization And Desiccation For The Refrigerant System

    GREE GMV5 HR HEAT RECOVERY UNITS PART 8 VACUUMIZATION AND DESICCATION FOR THE REFRIGERANT SYSTEM Works for the refrigerant system include cleaning and desiccating the pipes, performing an air-tightness test, and perfusing refrigerant. 1 AIR-TIGHTNESS TEST 1.1 Importance of the Air-tightness Test Air-tightness of the multi-module air conditioning system mainly refers to the tightness of the refrigerant pipes, which ensures secure and reliable running of the air conditioner.

  • Page 99: Vacuumization And Desiccation For The System

    GREE GMV5 HR HEAT RECOVERY UNITS (5) If the pressure must be kept for a long time, decrease the pressure to 0.5 MPa or lower. High pressure for a long time may cause leakage at the welding point or safety hazard.
  • Page 100 GREE GMV5 HR HEAT RECOVERY UNITS means of vacuum breaking. Perfuse nitrogen at 0.05 MPa to the pipe. Vacuumize for 2 hours and keep vacuuming for 1 hour. If the vacuum degree of -0.1 MPa cannot be reached, repeat this operation till water is discharged.

  • Page 101: Part 9 Refrigerant Perfusion

    GREE GMV5 HR HEAT RECOVERY UNITS PART 9 REFRIGERANT PERFUSION 1 CALCULATION METHOD FOR PERFUSING REFRIGERANT Outdoor unit has been charged refrigerant before delivery. Charge additional refrigerant for field-installed connecting pipe. If the pipeline is longer than 1m(39-3/8inch), please refer to the following table for charging amount of refrigerant. (Liquid pipe...

  • Page 102: Method For Perfusing Refrigerant

    GREE GMV5 HR HEAT RECOVERY UNITS Suppose the Pipeline charging amount A=Σ Liquid pipe length × refrigerant charging amount of every 1m (39.37inch) liquid pipe=25kg (55.1 pounds) Total refrigerant charging amount R=25+12=37kg (55.1+26.4=81.5pounds). After confirming that there is no leakage from the system, when the compressor is not in operation, charge additional R410A with specified amount to the unit through the filling opening of the liquid pipe valve of the outdoor unit.
  • Page 103 GREE GMV5 HR HEAT RECOVERY UNITS Step 5: Turn on the valve of the high pressure gauge (while keep the valve of the high pressure gauge turned off) and then perfuse refrigerant to the system. Record the change of weight of the refrigerant tank.
  • Page 104 GREE GMV5 HR HEAT RECOVERY UNITS Step 2: Turn on the valves for the liquid and gas pipes of each module completely. For the modular unit, the oil-equalizing valve of each module also needs to be turned on. Step 3: Make the system to run in commissioning mode via the commissioning software or the main board of the ODU.

  • Page 105: Chapter 3 Commissioning Operation

    GREE GMV5 HR HEAT RECOVERY UNITS CHAPTER 3 COMMISSIONING OPERATION PART 1 SECURITY REQUIREMENTS 1 PRECAUTIONS FOR CONSTRUCTION  All commissioning and maintenance personnel must learn and strictly comply with construction security specifications. Security measures must be taken especially for outdoor operations.

  • Page 106: Function Settings Of Odus

    GREE GMV5 HR HEAT RECOVERY UNITS 3 FUNCTION SETTINGS OF ODUS Function application of ODUs consists of function DIP switch settings and function button settings, including special engineering requirements. 3.1 System Function DIP Switch Settings DIP Switch Name Meaning Factory Settings...
  • Page 107 GREE GMV5 HR HEAT RECOVERY UNITS  On the master module, the SA8 DIP switch must be set again, the SA1 DIP switch cannot be further set, and other DIP switches retain the factory settings without special requirements.  Function DIP switches must be set when the ODU is powered off, and then the settings are valid after the ODU is powered on.
  • Page 108 GREE GMV5 HR HEAT RECOVERY UNITS Address No. DIP1 DIP2 DIP3 DIP4 DIP5 × × × × × × On the DIP switch, “ON” indicates “0” status and the opposite direction indicates "1” status. “ ” × indicates invalid status.
  • Page 109 GREE GMV5 HR HEAT RECOVERY UNITS Precautions: ① When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault may occur. ② Only one compressor can be set to emergency mode on a module.
  • Page 110 GREE GMV5 HR HEAT RECOVERY UNITS Precautions: ① When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault may occur. ② Only one compressor can be set to emergency mode on a module.
  • Page 111 GREE GMV5 HR HEAT RECOVERY UNITS (2) When it is required to set the fan to emergency mode, set the DIP switch as follows: Fan Emergency Operation DIP Switch (SA5_FAN-E) DIP1 DIP2 Remark No fan in emergency operation mode Shielding the operation of 1# fan...
  • Page 112 GREE GMV5 HR HEAT RECOVERY UNITS settings. For the basic module set to master unit, the module address is displayed as “01” on the main board. Precautions: ① When the DIP switch setting is not covered in the above scope, a DIP switch setting exception fault may occur.
  • Page 113 GREE GMV5 HR HEAT RECOVERY UNITS ② System function settings and query can be used no matter whether the entire unit runs. 3.2.1 Introduction to Function Buttons  When function buttons are used to set functions for outdoor unit, the cover of electric box and panel must be assembled well.
  • Page 114 GREE GMV5 HR HEAT RECOVERY UNITS Factory Settings Function Function Function Meaning Remark Code Name Code Meaning limitation settings Indoor unit Prevents IDU project number conflicts when It can only —— —— project different refrigerating systems are controlled in a be set.
  • Page 115 GREE GMV5 HR HEAT RECOVERY UNITS (2) A6 Unit cooling/heating function This function sets operation modes of the entire unit, including: Function Mode of ODU Operation Mode of IDU Code Name Cooling mode, dehumidifying mode, heating mode, and air supply mode.
  • Page 116 GREE GMV5 HR HEAT RECOVERY UNITS NOTE: The factory setting is “00”.  After silent mode is set, unit’s cooling and heating capacity will be lowered correspondingly. Please be noted. (4) A8 Aftersales vacuuming mode This function ensures the vacuum degree of the entire system during maintenance to prevent operation functions of dead zones.
  • Page 117 GREE GMV5 HR HEAT RECOVERY UNITS (11) n8 Indoor unit address query This function queries addresses of all IDUs through one operation of the ODU. (12) n9 Online IDU quantity query This function queries the number of online IDUs through the ODU.
  • Page 118 GREE GMV5 HR HEAT RECOVERY UNITS (1) A7 Outdoor silent mode settings Step 1: Confirm entering the A7 outdoor silent mode settings. The master unit is displayed as follows: LED1 LED2 LED3 Function Code Display Mode Silent Mode Code Display Mode...
  • Page 119 GREE GMV5 HR HEAT RECOVERY UNITS (2) A6 Unit cooling/heating function settings Step 1: Confirm entering the A6 unit cooling/heating function settings. The master unit is displayed as follows: LED1 LED2 LED3 ODU Function ODU Function Function Code Display Mode...
  • Page 120 GREE GMV5 HR HEAT RECOVERY UNITS  Indoor unit pipeline refrigerant recovery Step 3: Select "01” as in step 2 to enter IDU refrigerant recovery. Digital LEDs and status LEDs of all basic modules are displayed as follows: LED1 LED2...
  • Page 121 GREE GMV5 HR HEAT RECOVERY UNITS as follows: LED1 LED2 LED3 Function Code Display Mode Current Progress Display Mode Current Status Display Mode Blinking Blinking Enter the to-be-confirmed status of system vacuuming mode settings. Step 2: Press "SW7" to confirm entering the to-be-confirmed status of system vacuuming mode settings.
  • Page 122 GREE GMV5 HR HEAT RECOVERY UNITS Step 2: Press "SW7" to confirm entering forcible defrosting. The master module is displayed as follows: LED1 LED2 LED3 Current Function Code Display Mode Display Mode Current Status Display Mode Progress/Mode When the unit reaches defrosting quit conditions, the system automatically quits and restores the normal operation control.
  • Page 123 GREE GMV5 HR HEAT RECOVERY UNITS After 10 seconds, the system quits this mode and restores the normal operation mode. NOTE: This function only needs to be set on the master system, which is the system with the centralized control address SA2 DIP switch being "00000". For details, see the "Centralized Control Address DIP Switch (SA2_Addr-CC)"...
  • Page 124 GREE GMV5 HR HEAT RECOVERY UNITS "0075" is displayed. If no button operations are performed on the master unit for five minutes, the function setting automatically quits and the unit restores the current status. Note: The online IDU quantity query function applies to a single refrigerating system only.
  • Page 125 GREE GMV5 HR HEAT RECOVERY UNITS The display is as follows: LED1 LED2 LED3 Function Code Display Mode Fault Sequence Display Mode Current Status Display Mode Displayed alternately Displayed alternately Historical fault/module Displayed alternately address Displayed alternately Displayed alternately "01-05" indicates the fault sequence from the earliest to the latest.
  • Page 126 GREE GMV5 HR HEAT RECOVERY UNITS Parameter Code Parameter Name Unit Remark This parameter is invalid for the GMV5 Discharge temperature of compressor 4 ° C series. This parameter is invalid for the GMV5 Discharge temperature of compressor 5 ° C series.
  • Page 127 GREE GMV5 HR HEAT RECOVERY UNITS Step 9: If the nb ODU bar code query is selected, the display is as follows. Enter the to-be-confirmed status of ODU bar code query. LED1 LED2 LED3 Function Code Display Mode Current Progress/Mode...
  • Page 128 GREE GMV5 HR HEAT RECOVERY UNITS LED1 LED2 LED3 Parameter Code Display Mode Parameter Code Display Mode Parameter Code Display Mode On/Off ↓ LED1 LED2 LED3 Parameter Code Display Mode Parameter Code Display Mode Parameter Code Display Mode Blinking Blinking ↓...

  • Page 129: Part 2 Commissioning Process

    GREE GMV5 HR HEAT RECOVERY UNITS 3.5.2 Restoring Factory Settings Restoring Factory Prompt for Setting Method Remark Settings Successful Settings Press and hold "SW8" on All LEDs blink for All factory settings of the ODU are restored Restoring setting 1 the master unit for more three seconds.

  • Page 130: Required Files And Tools For Engineering Commissioning

    GREE GMV5 HR HEAT RECOVERY UNITS 2 REQUIRED FILES AND TOOLS FOR ENGINEERING COMMISSIONING 2.1 Required Tools for Engineering Commissioning of GREE Inner hexagon spanner Digital thermometer Shifting spanner Noise meter Cross screwdriver Clamp meter Straight screwdriver Digital multimeter Vacuum pump...
  • Page 131 GMV5 HR HEAT RECOVERY UNITS (2) Make sure that the commissioning software is correct before commissioning. (3) The professional aftersales commissioning software provided by GREE should be used for commissioning of GREE VRF system. (4) Make sure that all required files and parameter records are prepared.
  • Page 132 GREE GMV5 HR HEAT RECOVERY UNITS larger than 5° CK. If the difference is larger than 5° C K, it is required to check the ODU for leakage. NOTE: Guarantee that the system has never been started before this test. Otherwise, the high pressure value will be over-higher than the environment temperature or the low pressure value will be over-lower than the environment temperature.
  • Page 133 GREE GMV5 HR HEAT RECOVERY UNITS power factor decreases. Therefore, the power capacity should not be less than the maximum power of the unit. (4) Check air switches and fuse links for their models and using methods. Commercial air conditioning units must be installed with independent air switches, fuse links, and similar protectors.
  • Page 134 GREE GMV5 HR HEAT RECOVERY UNITS observe the code again. The fault code “U3” should disappear. 3.2.4 Communication System Check (1) The following communication contents must be checked again before commissioning: Do main boards correctly communicate with each other between outdoor unit modules?
  • Page 135 GREE GMV5 HR HEAT RECOVERY UNITS Spot Check for GMV5 Commissioning Spot Check Item Qualified Do the circuit breaker and leakage switch comply with unit design requirements? Is the spacing between the power cable and the TV set larger than 1 m?
  • Page 136 GREE GMV5 HR HEAT RECOVERY UNITS Heating mode when the outdoor environment temperature is lower than 20° C(68° F). (3) Before starting commissioning, make sure again that stop valves of all basic modules of the ODU have been completely opened.
  • Page 137 GREE GMV5 HR HEAT RECOVERY UNITS Progress Description for Commissioning Phases —— Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code Status Status Status LED3 displays the IDU quantity, 01-80 Blinking which should be manually 04_Indoor unit confirmed.
  • Page 138 GREE GMV5 HR HEAT RECOVERY UNITS Progress Description for Commissioning Phases —— Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code Status Status Status The system detects that refrigerants are normal and automatically enters the next step.
  • Page 139 GREE GMV5 HR HEAT RECOVERY UNITS Progress Description for Commissioning Phases —— Commissioning Code Progress Code Status Code LED1 LED2 LED3 Meaning Progress Display Display Display Code Code Code Status Status Status The system is in heating-mode commissioning operation (the...
  • Page 140 GREE GMV5 HR HEAT RECOVERY UNITS Step 2: In power-off status of ODU, set the ODU to a corresponding static pressure mode according to static pressure design requirements for outdoor engineering. For details about the setting method, see the "Outdoor Fan Static Pressure Setting DIP Switch (SA6_ESP_S)" section. If there are not static pressure requirements, retain the factory settings.
  • Page 141 GREE GMV5 HR HEAT RECOVERY UNITS Exception 2: If no master IDU is detected in step 02, the following faults are displayed in step 02: LED1 LED2 LED3 Function Code Display Mode Current Progress Display Mode Current Status Display Mode Blinking In this case, all buttons are invalid.
  • Page 142 GREE GMV5 HR HEAT RECOVERY UNITS If the displayed quantity is consistent with the number of actually connected modules, press "SW7" on the master unit to confirm. The main board is displayed as follows and the unit automatically enters the next commissioning step.
  • Page 143 GREE GMV5 HR HEAT RECOVERY UNITS Step 10: Unit commissioning step 06 is component detection for ODU. If no exception is detected, the main board is displayed as follows and the unit automatically enters the next commissioning step. Commissioning Code...
  • Page 144 GREE GMV5 HR HEAT RECOVERY UNITS Step 12: Unit commissioning step 08 is compressor preheating confirmation. If it is detected that the compressor preheating period is more than eight hours, the main board is displayed as follows and the unit automatically enters the next step.
  • Page 145 GREE GMV5 HR HEAT RECOVERY UNITS Commissioning Code Progress Code Status Code LED1 LED2 LED3 Progress Meaning Display Display Display Code Code Code Status Status Status The system detects insufficient 09_Pre-startup refrigerants and stops to refrigerant balance the pressure lower than detection 0.3 MPa.
  • Page 146 GREE GMV5 HR HEAT RECOVERY UNITS If it is confirmed to enable the unit, press "SW7". The main board is displayed as follows and the unit automatically enters the next commissioning step. Commissioning Code Progress Code Status Code Progress LED1...
  • Page 147 GREE GMV5 HR HEAT RECOVERY UNITS B. If the system selects the heating mode, the main board is displayed as follows: Commissioning Code Progress Code Status Code LED1 LED2 LED3 Progress Meaning Display Display Display Code Code Code Status Status...
  • Page 148 3.3.2.2 Commissioning Through the Commissioning Software Step 1: Install commissioning software to the computer and connect monitoring communication cables (for details about the operation method, see the "GREE Central Air Conditioning Commissioning Software" section). Step 2: Completely cover the front panel of ODU.
  • Page 149 GREE GMV5 HR HEAT RECOVERY UNITS Click "Start" to enter the commissioning function and the software automatically performs commissioning. " " indicates that commissioning is being performed on the phase and " " indicates that commissioning is passed on the phase.
  • Page 150 GREE GMV5 HR HEAT RECOVERY UNITS " " indicates that commissioning is not passed on the phase and troubleshooting is required (after troubleshooting, the unit automatically enters the next step if no "OK" exists or click "OK" to enter the next step). Click "...
  • Page 151 GREE GMV5 HR HEAT RECOVERY UNITS Startup". When an exception occurs in step 10, click "Back" to return to step 9 and then click "OK" in step 9 to perform commissioning again for step 10. If a U6 fault (valve exception) occurs in step 10, users can click "Skip"...
  • Page 152 GREE GMV5 HR HEAT RECOVERY UNITS Completion". Note: During commissioning, users must listen to the operating sound of outdoor and indoor fans and compressors to check for exceptions. 3.3.2.3 Commissioning Through the Portable Commissioning Tool Step 1: Connect the Portable Commissioning Tool. Please refer to the operation manual of Portable Commissioning Tool for the connection method.
  • Page 153 GREE GMV5 HR HEAT RECOVERY UNITS Step 4: On the engineering debugging page, click “Startup” button to start engineering debugging; press “Stoppage” button to pause the engineering debugging; Step 5: Once it entered the engineering debugging, Portable Commissioning Tool will display current progress of engineering debugging (step#).

  • Page 154: References For Proper Unit Operation Parameters

    GREE GMV5 HR HEAT RECOVERY UNITS 4 REFERENCES FOR PROPER UNIT OPERATION PARAMETERS Commissioning Item Parameter Name Unit Reference Value Outdoor ° C/ °F —— environment temperature ●When the system compressor is running, the normal discharge pipe or top temperature for cooling is 70-95°...
  • Page 155 GREE GMV5 HR HEAT RECOVERY UNITS Commissioning Item Parameter Name Unit Reference Value ●When the environment temperature is lower than IPM module temperature of 35° C, the temperature of the IPM module is lower than ° C/ °F inverter 80° C. The highest temperature is not higher than compressor 95°...

  • Page 156: Chapter 4 Maintenance

    GREE GMV5 HR HEAT RECOVERY UNITS CHAPTER 4 MAINTENANCE PART 1 FAILURE CODE TABLE 1 System Failure Code Table Indoor: Error Code Content Error Code Content Malfunction of lower water temperature Malfunction of IDU sensor of water tank Protection of indoor fan...
  • Page 157 GREE GMV5 HR HEAT RECOVERY UNITS Error Code Content Error Code Content Malfunction of casing top temperature Over-current protection of compressor 2 sensor of compressor 1 Malfunction of casing top temperature Over-current protection of compressor 3 sensor of compressor 2...
  • Page 158 GREE GMV5 HR HEAT RECOVERY UNITS Error Code Content Error Code Content AC current protection of inverter Desynchronizing protection of inverter fan compressor AC input voltage of drive of inverter Malfunction of drive storage chip of inverter compressor outdoor fan High-voltage protection of fan’s drive DC...
  • Page 159 GREE GMV5 HR HEAT RECOVERY UNITS Status: Error Code Content Error Code Content Unit waiting for debugging Shielding status Refrigerant recovery operation of SE operation setting of system after-sales Defrosting Compulsory defrosting Limit setting for max. capacity/output Oil-return capacity Compulsory excursion of engineering code...

  • Page 160: Part 2 Exception And Troubleshooting

    GREE GMV5 HR HEAT RECOVERY UNITS PART 2 EXCEPTION AND TROUBLESHOOTING 1 How to locate a faulty IDU promptly Use the IDU project number enquiry and faulty IDU locating function to locate a faulty IDU or wired controller's corresponding IDU as follows when multiple IDUs are running in one place:...

  • Page 161: Exception Analyzing And Troubleshooting

    GREE GMV5 HR HEAT RECOVERY UNITS NOTE1: If the enquired IDU is normal, no fault code will be displayed in the temperature area; if the unit indoor has multiple faults, fault codes will be displayed in the temperature area at an interval of 3 seconds.
  • Page 162 GREE GMV5 HR HEAT RECOVERY UNITS Fault code Fault Possible reasons Solution 1) Check if the cable connecting the control board and the compressor's drive board is loose. If yes, reconnect it; 1) The communication cable is 2) Check if the cable connecting the control Communication not connected.
  • Page 163 GREE GMV5 HR HEAT RECOVERY UNITS conflict, may occur on different cooling systems. In such case, set project numbers of each system and solve the fault as follows: (1) Project number conflict: When multiple systems are controlled in a centralized way, if two or more IDUs share the same project number, the engineer number conflict occurs.
  • Page 164 GREE GMV5 HR HEAT RECOVERY UNITS (2) Solution of project number conflict: Manual setting on the commissioning software: Use the commissioning software to set IDUs' project numbers separately in every system or reset projects numbers in multiple systems. Choose Setting -> Parameter Settings, as shown in Figure 2: Figure 2 If project commissioning is finished and the IDU where the conflict occurs needs to be set separately.
  • Page 165 GREE GMV5 HR HEAT RECOVERY UNITS Choose one IDU in the conflicting IDU box shown in Figure 3 and click Set in the setting box. Choose a value in the pop-up box shown in Figure 4 and click Set. Figure 4...
  • Page 166 GREE GMV5 HR HEAT RECOVERY UNITS If project commissioning is not finished and all the IDUs' project numbers need to be reset, click Set All IDUs Project Number shown in Figure 2. As shown in Figure 6, the pop-up box comprises two parts: Systems Selection, where you can choose the system to be reset;...
  • Page 167 GREE GMV5 HR HEAT RECOVERY UNITS LED1 LED2 LED3 Function Code LED Status Progress LED Status Status LED Status Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker Flicker (2) Press SW2 (▼) on the controlling unit and select n5. Short press SW7 to show the following...
  • Page 168 GREE GMV5 HR HEAT RECOVERY UNITS Fault Fault Possible reasons Solution code 1. The drive board's IPM module is 1. Replace the compressor drive damaged; board; Compressor drive IPM 2. The compressor's UVW cable is not 2. Reconnect the compressor's UVW module protection connected properly;...
  • Page 169 GREE GMV5 HR HEAT RECOVERY UNITS Fault Fault Possible reasons Solution code Fan drive temperature 1. The fan drive board is faulty. 1. Replace the fan drive board. sensor fault 1. The fan drive board is faulty; 1. Replace the fan drive board;...
  • Page 170 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method when the IDU Clean the is working in system and the heating clear the 2.2.1...
  • Page 171 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method Stop the whole system. Test the system's balance pressure 20 minutes later and convert the...
  • Page 172 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method temperature of valve of reset. 1.2.2 The If it is set, it control...
  • Page 173 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method and the Clean the difference system and between the clear the 2.2.1 compressor's impurities.
  • Page 174 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method Touch the pipe along the flowing direction of refrigerant to Replace 2.2 The feel the ——...
  • Page 175 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method Stop the whole system. Test the system's balance pressure 20 minutes later and...
  • Page 176 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 6.1.1 The power cable Reconnect the Manual connecting the motor with the check motor and main power cable.
  • Page 177 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 1.2 The indoor It is a normal ambient Measure the phenomenon temperature temperature ——...
  • Page 178 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 3.1 The outdoor It is a ambient normal temperatur Measure the 3. The ambient...
  • Page 179 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method Connect the stop valves of the module high- and low-pressure gas pipes to the...
  • Page 180 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 6.2.2 The fan motor is not properly connected with the Manual Reconnect it...
  • Page 181 GREE GMV5 HR HEAT RECOVERY UNITS (3) Poor cooling/heating performance Possible reasons Feedback Primary reason Secondary reason Tertiary reason Exception Solution from user Confirmation Confirmation Confirmation Description Description Description method method method 1. The stop valve of the Fully open Manual ——...
  • Page 182 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Feedback Primary reason Secondary reason Tertiary reason Exception Solution from user Confirmation Confirmation Confirmation Description Description Description method method method 3.2 The outdoor ambient temperatur Measure the e in the outdoor It is a normal ——...
  • Page 183 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Feedback Primary reason Secondary reason Tertiary reason Exception Solution from user Confirmation Confirmation Confirmation Description Description Description method method method Check the necessary amount of refrigerant Incorrect 7. Not and inject Other quantity of ——...
  • Page 184 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method more than Replace the 10° C higher 2.2.2 The body of the than the intake ——...
  • Page 185 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method Stop the whole system. Test the system's balance pressure 20 minutes later and convert the...
  • Page 186 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method low-pressure Clean the saturation system and temperature clear the 1.3.1 and the impurities.
  • Page 187 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method Check the necessary amount of Incorrect refrigerant 4. Too much quantity of and discharge ——...
  • Page 188 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 3.1 In the cooling It is a normal mode, the Measure the phenomenon ——...
  • Page 189 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 5.1.1 The pressure switch is not —— —— Reconnect it. connected to 5.1 The high...
  • Page 190 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 6.2.3 The control board Replace the of the fan's Manual check control board of motor is the motor.
  • Page 191 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 1. The stop valve of the ODU is not Manual Fully open the ——...
  • Page 192 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method Stop the whole system. Test the system's balance pressure 20 minutes later and convert the pressure into 4.1 The low...
  • Page 193 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Fault Primary reason Secondary reason Tertiary reason Fault Solution code Confirmation Confirmation Confirmation Description Description Description method method method 6.1.3 The Other Replace the motor is reasons motor. damaged. 6.2.1 The fan...
  • Page 194 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.3 Poor cooling/heating performance Possible reasons Feedback Primary reason Secondary reason Tertiary reason Exception Solution from user Confirmation Confirmation Confirmation Description Description Description method method method 1. The stop valve of the ODU is not...
  • Page 195 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Feedback Primary reason Secondary reason Tertiary reason Exception Solution from user Confirmation Confirmation Confirmation Description Description Description method method method 3.2 The outdoor ambient Measure the temperatur outdoor It is a normal ——...
  • Page 196 GREE GMV5 HR HEAT RECOVERY UNITS Possible reasons Feedback Primary reason Secondary reason Tertiary reason Exception Solution from user Confirmation Confirmation Confirmation Description Description Description method method method Check the necessary amount of refrigerant Incorrect 7. Not and inject Other quantity of ——...
  • Page 197 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: status code, no troubleshooting. 2.2.4.4 “A4” Oil return status Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: This code is status code, which means the system has entered into oil return status, if returning oil under heating mode, the operating IDU will stop for 5-10 minutes.
  • Page 198 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.8 “AH” Heating status Error display: ODU mainboard will display Error judgment condition and method: This code is status code, which means the system has entered into heating mode for operation. Possible reason: ——...
  • Page 199 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: Clean the filter and eliminate remind to enter into the next service cycle. 2.2.4.13 “AP” Unit startup debug confirmation Error display: ODU mainboard will display Error judgment condition and method: This code is status code, which means whether it is ready for the debug procedure or not or unit status can be started.
  • Page 200 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.17 “b1” Outdoor ambient temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 201 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.19 “b3” Defrost temperature sensor 2 error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 202 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.20 “b4” Malfunction of liquid temperature sensor of sub-cooler Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 203 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.22 “b6” Malfunction of inlet tube temperature sensor of vapor liquid separator Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 204 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.23 “b7” Malfunction of exit tube temperature sensor of vapor liquid separator Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 205 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.25 “b9” Malfunction of gas temperature sensor of heat exchanger Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 206 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.26 “bA” Malfunction of oil-return temperature sensor Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value;...
  • Page 207 GREE GMV5 HR HEAT RECOVERY UNITS ■Connected wired controller quantity or address setting is improper ■Controller is abnormal Troubleshooting: If C0 isn’t displayed on the ODU main control board, please check the network between IDU and wired controller; if ODU main control board, IDU light board and wired controller all report C0, please check the network between ODU and IDU and the network between IDU and wired controller;...
  • Page 208 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: If ODU hasn’t received inverter compressor drive board data in continuous 30s, report the error. Possible reason: ■Communication wire between ODU mainboard inside module and inverter compressor drive board is not connected properly ■Inverter compressor drive board is abnormal...
  • Page 209 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.30 “C4” IDU missing error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: If ODU hasn’t received inverter fan drive board data in continuous 30s, report the error.
  • Page 210 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.31 “C5” IDU project code conflict Error display: debugging software and long-distance monitoring software will display Error judgment condition and method: Check IDU project code. All IDUs with the same project codes will report this error. But this error will be displayed and require elimination only when debugging software, central controller and long-distance monitoring software are connected.
  • Page 211 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.33 “C8” Compressor emergency operation status. Error display: ODU mainboard will display Error judgment condition and method: If any compressor in the module is set with emergency operation status, the mainboard will display “C8”...
  • Page 212 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: status code, no troubleshooting. 2.2.4.36 “CH” Rated capacity ratio is too high Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: The system detects rated capacity of online IDUs and ODUs. When the ratio between total rated capacity of IDUs and total rated capacity of ODUs is more than 1.35, the unit will limit unit on and report...
  • Page 213 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.39 “CF” Multiple master controlling units error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Mainboard detects the DIP switch (SA8) of master controlling unit to judge if it is master controlling unit.
  • Page 214 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: When multiple refrigerant system is connected through CAN2 network of unit mainboard, it is allowable to have only one master system in this network. When the system address DIP switch (SA2) of master controlling unit in two or more systems are detected as the master system DIP switch simultaneously, that is SA2 DIP switch is “00000”, it will report...
  • Page 215 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: If the quantity of address that ODU allocates to other ODU modules exceeds 4, the system will report IP address allocation overflow. If the quantity of address that ODU allocates to IDUs exceeds 80, the system will report IP address allocation overflow.
  • Page 216 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.2.44 “d3” Ambient temperature sensor error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge...
  • Page 217 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.46 “d6” Outlet pipe temperature sensor error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
  • Page 218 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.47 “d7” Humidity sensor error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
  • Page 219 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.49 “dA” IDU network address error Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Through testing the IDU address chip and IP address, if address chip cannot be read, IDU IP is 0 or IP is in conflict, report the error.
  • Page 220 GREE GMV5 HR HEAT RECOVERY UNITS ■Communication of wired controller touch button board and display board IIC is abnormal; ■Read and write of wired controller memory chip IIC is abnormal (when memory chip is existed); Troubleshooting: 2.2.4.51 “dC” Capacity DIP switch setting error...
  • Page 221 GREE GMV5 HR HEAT RECOVERY UNITS ■Detecting circuit is abnormal Troubleshooting: 2.2.4.53 “db” Project debugging Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: This is a status code of project debugging, not a error code. When IDU or ODU displays this code, it means the unit is under debugging status and the IDU cannot be operated.
  • Page 222 GREE GMV5 HR HEAT RECOVERY UNITS ■System pipeline is blocked; Troubleshooting: 2.2.4.55 “E2” Compressor low discharge temperature protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will...
  • Page 223 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: Test the compressor discharge temperature and high pressure value. If the difference between discharge temperature and high pressure value is lower than 10 °C , the unit will stop for protection.
  • Page 224 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.56 “E3” System low pressure protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Test compressor suction pressure through low pressure sensor. When pressure value is lower than -41 °C , the unit will stop for protection.
  • Page 225 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: E3 system low pressure protection The low pressure sensor fails, Does the low pressure shown on the pressure gauge reach the Replace the pressure sensor protection value? Add refrigerant according to Is there enough refrigerant? the design and pipeline.
  • Page 226 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.57 “E4” Compressor high discharge temperature protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Test the compressor discharge temperature through compressor discharge pipe and shell top temperature sensor.
  • Page 227 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting:...
  • Page 228 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.58 “F0” ODU mainboard error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the reading of address chip, memory chip and clock chip of ODU mainboard is normal. If the data of address chip, memory chip and clock chip cannot be read, it is abnormal.
  • Page 229 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.60 “F3” Low pressure sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of low pressure sensor through sensor detecting circuit and judge the range of AD value;...
  • Page 230 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.61 “F5” Compressor 1 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
  • Page 231 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.62 “F6” Compressor 2 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
  • Page 232 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.63 “F7” Compressor 3 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
  • Page 233 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.64 “F8” Compressor 4 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
  • Page 234 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.65 “F9” Compressor 5 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
  • Page 235 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.66 “FA” Compressor 6 discharge temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensors through temperature sensors circuit and judge the range of AD value;...
  • Page 236 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.67 “FH” Compressor 1 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 237 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.68 “FC” Compressor 2 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 238 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.69 “FL” Compressor 3 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 239 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.70 “FE” Compressor 4 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 240 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.71 “FF” Compressor 5 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 241 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.72 “FJ” Compressor 6 current sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of current sensor through detecting circuit and judge the range of AD value; if the sampled AD value exceeds upper limit and lower limit in 3 seconds continuously, report the error.
  • Page 242 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.73 “FU” Compressor 1 shell top temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
  • Page 243 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.74 “Fb” Compressor 2 shell top temperature sensor error Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value.
  • Page 244 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.75 “H0” Fan drive board error Error display: IDU wired controller will display Error judgment condition and method: Check the error code on IDU wired controller. If IDU wired controller displays H0, you should also check the error code on nixie tube of ODU main control board.
  • Page 245 GREE GMV5 HR HEAT RECOVERY UNITS Error judgment condition and method: Check the error code on IDU wired controller. If IDU wired controller displays H1, you should also check the error code on nixie tube of ODU main control board. Judge the detailed error of fan drive board according to the error code on main control board and arrange troubleshooting accordingly.
  • Page 246 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.79 “H5” Inverter fan overcurrent protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H5 is displayed, it indicates...
  • Page 247 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.80 “H6” Drive IPM module protection of fan Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H6 is displayed, it indicates Drive...
  • Page 248 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.4.4.81 “H7” Fan drive temperature sensor error Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H7 is displayed, it indicates fan...
  • Page 249 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.82 “H8” Fan drive IPM high temperature protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H8 is displayed, it indicates fan...
  • Page 250 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.83 “H9” Desynchronizing protection of inverter compressor Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If H9 is displayed, it indicates...
  • Page 251 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.84 “HC” AC input voltage of drive of inverter fan Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If HC is displayed, it indicates AC...
  • Page 252 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.86 “HL” Fan drive DC bus low voltage protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If HL is displayed, it indicates fan...
  • Page 253 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.88 “J0” Other module protection Error display: ODU mainboard will display . IDU and IDU receive light board will not display. Error judgment condition and method: In multiple modules system, if any module causes system stoppage, the modules without errors will display this error to indicate other module has error, which causes unit stoppage.
  • Page 254 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.89 “J1” Compressor 1 overcurrent protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection.
  • Page 255 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection. Possible reason: ■System parameters are abnormal;...
  • Page 256 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection. Possible reason: ■System parameters are abnormal;...
  • Page 257 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection. Possible reason: ■System parameters are abnormal;...
  • Page 258 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection. Possible reason: ■System parameters are abnormal;...
  • Page 259 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: Check the operation current of compressor through current sensor or circuit. When current exceeds the limit, the unit will stop for protection. Possible reason: ■System parameters are abnormal;...
  • Page 260 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: Check the system high pressure and low pressure through pressure sensor. When the difference between system high pressure and low pressure is lower than 0.1MPa after starting operation, the unit will stop for protection.
  • Page 261 GREE GMV5 HR HEAT RECOVERY UNITS Error judgment condition and method: Check the system high pressure and low pressure through pressure sensor. When the ratio between system high pressure and low pressure is bigger than 8 after starting operation, the unit will stop for protection.
  • Page 262 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.98 “L1” Indoor fan protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the rotation speed of IDU is too slow, or it stops rotation, or protection signal of outdoor fan is transferred.
  • Page 263 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.99 “L3” Water full protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check the status of IDU float switch. When water level is too high, float switch is activated, so water...
  • Page 264 GREE GMV5 HR HEAT RECOVERY UNITS full protection happens. Possible reason: ■IDU is installed improperly ■Drainage pump is broken ■Float switch operates abnormally ■IDU mainboard is abnormal Troubleshooting:...
  • Page 265 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.100 “L4” Power supply overcurrent protection Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: Check if the power supply current from IDU to wired controller is normal. If power supply current is too big, it is judged that the current is abnormal.
  • Page 266 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.102 “L7” No master IDU Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: No master IDU error will happen when there is no master IDU in the system Possible reason: ■Master IDU is offline...
  • Page 267 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.103 “L9” Group-controlled IDU quantity inconsistency Error display: IDU wired controller and IDU receive light board will display Error judgment condition and method: If the IDU quantity connected with wired controller exceeds 16 sets or actually connected IDU quantity is inconsistent with the set group-controlled IDU quantity.
  • Page 268 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: Make sure the IDUs connected with one wired controller belong to the same series. 2.2.4.105 “LC” Mismatch of IDU and ODU models Error display: IDU wired controller and IDU receive light board will display...
  • Page 269 GREE GMV5 HR HEAT RECOVERY UNITS Error judgment condition and method: This code is function setting status code, which indicates that the system has entered the limit setting status of max output capacity. “10” means max output capacity is 100%; “09” means max output capacity is 90%;...
  • Page 270 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.112 “n9” Online IDU quantity inquiry status Error display: ODU mainboard will display Error judgment condition and method: This code is the inquiry status code. In this case, online IDU quantity can be inquired.
  • Page 271 GREE GMV5 HR HEAT RECOVERY UNITS Possible reason: —— Troubleshooting: status code, no troubleshooting. 2.2.4.117 “nF” Fan only model status Error display: ODU mainboard will display Error judgment condition and method: This code is the fan only model status code, which indicates that the system has been set to fan only unit status.
  • Page 272 GREE GMV5 HR HEAT RECOVERY UNITS Check error code through IDU wired controller. If IDU wired controller displays P1, please also check the error code displayed on the nixie tube of ODU main control board. Detailed error of compressor drive board can be judged according to the error code on main control board. Then arrange troubleshooting accordingly.
  • Page 273 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.122 “P5” Inverter compressor overcurrent protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P5 is displayed, it indicates...
  • Page 274 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.123 “P6” Inverter compressor IPM protection Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P6 is displayed, it indicates...
  • Page 275 GREE GMV5 HR HEAT RECOVERY UNITS ■Connection sequence of compressor UVW wire is wrong; ■Compressor is broken; ■System is blocked; ■Compressor drive board IPM module is broken. Troubleshooting: 2.2.4.124 “P7” Compressor drive board temperature sensor error Error display: ODU mainboard will display...
  • Page 276 GREE GMV5 HR HEAT RECOVERY UNITS Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If P7 is displayed, it indicates compressor drive board temperature sensor error Possible reason: ■Compressor drive board is abnormal Troubleshooting: 2.2.4.125 “P8”...
  • Page 277 GREE GMV5 HR HEAT RECOVERY UNITS Check the error code on nixie tube of ODU main control board. If P9 is displayed, it indicates Desynchronizing protection of inverter compressor. Possible reason: ■Compressor is broken; ■Fan drive board is abnormal; Troubleshooting:...
  • Page 278 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.127 “PC” Compressor drive current detecting circuit error Error display: ODU mainboard will display Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If PC is displayed, it indicates...
  • Page 279 GREE GMV5 HR HEAT RECOVERY UNITS 2.2.4.129 “PL” Compressor drive DC bus low voltage protection Error display: ODU mainboard will display Error judgment condition and method: If the mainboard detects that input power cord voltage is lower than 320V, it will report low voltage protection.
  • Page 280 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting: 2.2.4.131 “U0” Insufficient compressor preheating time Error display: ODU mainboard, IDU wired controller and IDU receive light board will...
  • Page 281 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: If it is detected that the oil temperature preheating time of compressor before startup doesn’t reach 8 hours, it will report this error. Possible reason: —— Troubleshooting: The complete unit shall be preheated for more than 8 hours before startup.
  • Page 282 GREE GMV5 HR HEAT RECOVERY UNITS ■The power supply connected to the unit is incorrect, phase loss or reverse happens ■Detecting circuit is abnormal Troubleshooting: 2.2.4.134 “U4” Lack of refrigerant protection Error display: ODU mainboard, IDU wired controller and IDU receive light board will...
  • Page 283 GREE GMV5 HR HEAT RECOVERY UNITS pressure sensor. If the parameter is abnormal, it will indicate that confirming the open of cut-off valve and then press SW5 to enter the next step after confirming. Possible reason: ■ODU cut-off valve is not opened;...
  • Page 284 GREE GMV5 HR HEAT RECOVERY UNITS ■Electronic expansion valve doesn’t operate normally; ■ODU pipeline is blocked; Troubleshooting: 2.2.4.138 “UC” Setting of master IDU is done Error display: ODU mainboard, IDU wired controller and IDU receive light board will display Error judgment condition and method: This code is status code, not an error.
  • Page 285 GREE GMV5 HR HEAT RECOVERY UNITS display Error judgment condition and method: When outdoor ambient temperature exceeds the temperature range of auto charging of refrigerant (normal temperature range is 0~40° C), the unit will report this error. Possible reason: ——...
  • Page 286 GREE GMV5 HR HEAT RECOVERY UNITS Troubleshooting:...

  • Page 287: Part 3 Key Parts Maintenance

    GREE GMV5 HR HEAT RECOVERY UNITS PART 3 KEY PARTS MAINTENANCE 1 CAUTIONS ON CONTROLLER AP1 REPLACEMENT 1.1 Cautions on ODU AP1 Replacement 1.1.1 Distinguishing Master Module from Slave Module Before replacing ODU AP1, determine the module is a master ODU or a slave ODU. They can be distinguished based on: (1) “Master module DIP state (SA8_MASTER-S)”...
  • Page 288 GREE GMV5 HR HEAT RECOVERY UNITS LEDs are flashing. See the figure below: Inter-system IDU and ODU Main Power Running Reserved communication communication system System1 System1 M a i n - Power system System2 System2 If the LEDs flash, the ODU and IDUs normally communicate; if the LEDs are steadily on, communication is faulty.
  • Page 289 GREE GMV5 HR HEAT RECOVERY UNITS CN35 CN36 1.2.2 Restoring AP1 Engineering Parameters to Factory Settings (This Step Is Not Required for Original Packaged Parts) After wiring, whatever the AP1 is a master IDU AP1 or a slave IDU AP1, the new AP1 must be restored to factory settings.
  • Page 290 GREE GMV5 HR HEAT RECOVERY UNITS Method 1: If the IDU is configured with wired control, stop the IDU (except for lock mode) and press and hold the “MODE” button for 5 seconds to enter setting mode. After setting, the “Master” icon will be highlighted and the wired control buzzer will beep once.
  • Page 291 GREE GMV5 HR HEAT RECOVERY UNITS Method 1: If the IDU is configured with wired control, set P45 to reset IDU project number through one key function. Method 2: If the IDU is configured with lamp board, use the special control YV1L1 to set P45 and reset IDU project number through one key function.

  • Page 292: Compressor Replacement And Cautions

    GREE GMV5 HR HEAT RECOVERY UNITS After setting, the LCD displays the icon, as shown in the figure below. NOTE: All wired controls are set to master wired controls by default. (3) If the AP1 of the master IDU is replaced, Reset the master IDU through the wired control;...
  • Page 293 GREE GMV5 HR HEAT RECOVERY UNITS The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressors work at 30 Hz. The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressors work at 60 Hz.
  • Page 294 GREE GMV5 HR HEAT RECOVERY UNITS (2) For inverter compressor E405DHD-38A2YG: The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressor works at 30 Hz. The figure below shows current curves that change with evaporating temperature and condensing temperature while the compressor works at 60 Hz.
  • Page 295 GREE GMV5 HR HEAT RECOVERY UNITS Step 3: Check whether the electric expansion valves of ODUs and the 4-way valves act, and whether the oil return pipes and oil balance valves 1 and 2 are normal. Touch the pipelines next to the return capillary tubes to check whether there is oil flowing.
  • Page 296 GREE GMV5 HR HEAT RECOVERY UNITS (2) Four-way valve: While this valve is normally running, the four copper pipes connected to it will suffer different temperature. When a unit switches to act the valve, you will feel obvious vibration and hear sound.
  • Page 297 GREE GMV5 HR HEAT RECOVERY UNITS (3) Oil solenoid valve: This valve can be operated based on its state that is shown through the monitoring software and actual situation. When this valve is opened, the coil will be heated and lubricant at both sides of the valve flows.
  • Page 298 GREE GMV5 HR HEAT RECOVERY UNITS (3) As shown in the figure below, put the black test probe to pad P and the red test probe to pad V (YE) (make sure the moisture proof tape is removed). In normal cases, the multimeter should read 0.39±0.3 V.
  • Page 299 GREE GMV5 HR HEAT RECOVERY UNITS pad NV (make sure the moisture proof tape is removed). In normal cases, the multimeter should read 0.39±0.3 V. If it is “0” or infinitely great, the IPM module is faulty. (7) As shown in the figure below, put the black test probe to pad W (RD) and the red test probe to pad NW (make sure the moisture proof tape is removed).
  • Page 300 For GMV5 HR series, only GMV-Q120WM/B-F(U) units are configured with the left electric box, which contains mainly the drive of the compressor E405DHD-38A2YG. After the box is removed, take care with the removal of electric parts’ lines. DO NOT pull the lines with excessive force; or they may be broken.
  • Page 301 GREE GMV5 HR HEAT RECOVERY UNITS Refrigerant should be released from the high pressure side and low pressure side at the same time. Control the release speed. At the low pressure side, refrigerant is released through the low pressure check valve...
  • Page 302 GREE GMV5 HR HEAT RECOVERY UNITS 1.Inlet of invertercompressor 2.Outlet of inverter compressor 3.Unscrew the compressor After the compressor and oil separator are removed, check oil quality. If oils are contaminated, replace the compressor, oil separator, and gas/liquid separator. If oil changes to black, check oils of other modular units.
  • Page 303 GREE GMV5 HR HEAT RECOVERY UNITS (1) Check gas/liquid separator. 1.Weld the inlet and outlet pipes of the gas separator 2.Unscrew the 3.Remove gas separator thegas/liquid pipe After the gas separator is taken out, check whether it contains impurities. The check procedure is as follows: Use a glass container to hold the liquid.
  • Page 304 GREE GMV5 HR HEAT RECOVERY UNITS Note: Before replacing the faulty parts, make sure to block their openings with tapes. They should be kept intact for further analysis. Note: Volumes of oils drawn out from the oil separator, and gas separator should be recorded. After faulty compressors and parts are replaced, you should fill new oils of equivalent amount into the compressors and parts.
  • Page 305 GREE GMV5 HR HEAT RECOVERY UNITS (1) Clear oil return pipes. 2.Blow nitrogen into the oil return pipes and capillary tubes to clean them. 1.remove the oil return filter to see whether it is blocked. If yes, replace the filter.
  • Page 306 GREE GMV5 HR HEAT RECOVERY UNITS Note: The new compressor must be consistent with the faulty one in model. Check the rubbers for oil separator, gas separator, and drying filter. If they are lost during transportation, cover the parts with tape to keep the compressor dry and airtight inside.
  • Page 307 GREE GMV5 HR HEAT RECOVERY UNITS This is to avoid abnormality from happening inside the gas separator, and affecting system safety and reliability. Put the gas/liquid separator on a chassis and connect the inlet pipe of the gas separator with the outlet pipe.
  • Page 308 GREE GMV5 HR HEAT RECOVERY UNITS Step 10: Install a new compressor. If it is a inverter compressor that needs replacement 1.Weld the inlet of inverter compressor 2.Weld the outlet of inverter compressor 3.Screw the compressor For compressors of GMV-Q120WM/B-F(U) units, make sure the new compressors are consistent with the faulty ones in model.
  • Page 309 GREE GMV5 HR HEAT RECOVERY UNITS Cautions on replacement of compressors: ① Before installing new compressors, remove the sealing rubbers and weld the compressors with corresponding pipes. During welding, charge nitrogen into the pipes. Since compressors’ suction and discharge pipes are made of copper plated steels, you need to prepare special welding rods (containing 5% or more silver).
  • Page 310 Note: Lubricant is of great importance to the normal running of compressors. You should follow Gree’s requirement to add qualified lubricant of the specified trademark and ensure properness of fill...
  • Page 311 GREE GMV5 HR HEAT RECOVERY UNITS amount. Step 13: Vacuum-pump. After lubricant is added, keep on extracting air through a vacuum pump till the internal pressure reaches the absolute pressure 0kgf/cm and the pressure gauge reads -1 kgf/cm . This is to ensure that moistures inside the pipeline system are completely vaporized.

  • Page 312: Cautions On Compressor Drive Replacement

    GREE GMV5 HR HEAT RECOVERY UNITS 3 CAUTIONS ON COMPRESSOR DRIVE REPLACEMENT (1) Disconnect the power supply of the system. Set a multimeter to the AC voltage gear and measure voltage between two of the lines (L1, L2, L3, and N). The measuring result should be 0 V (sometimes, multimeters may be faulty and read false values).
  • Page 313 GREE GMV5 HR HEAT RECOVERY UNITS fan drive; compressor drive output 18 VDC; bridge rectifier output P; bridge rectifier output N; compressor drive output 540 VDC; reactor’s wiring terminal; bridge rectifier input AC inlead; compressor drive’s mains terminal. See the figure below:...
  • Page 314 GREE GMV5 HR HEAT RECOVERY UNITS (4) Loosen the screws on the compressor drive, as shown in the figure below:...
  • Page 315 GREE GMV5 HR HEAT RECOVERY UNITS (5) Replace the compressor drive. Before the replacement, apply some silicone tape onto the IPM module. (6) Install a new compressor drive, screw and wire it.

  • Page 316: Assembling And Disassembling Key Parts Of Odus

    GREE GMV5 HR HEAT RECOVERY UNITS 4 ASSEMBLING AND DISASSEMBLING KEY PARTS OF ODUS Compressor Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Use a screwdriver to unscrew the upper and lower front panels.
  • Page 317 GREE GMV5 HR HEAT RECOVERY UNITS Compressor Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Remove the compressor from the 5. Remove the compressor. chassis. ●Put the compressor in a proper position.
  • Page 318 GREE GMV5 HR HEAT RECOVERY UNITS Four-way valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
  • Page 319 GREE GMV5 HR HEAT RECOVERY UNITS Four-way valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Put the valve in a proper position. ● Weld the valve with the pipeline.
  • Page 320 GREE GMV5 HR HEAT RECOVERY UNITS Electric expansion valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower 1. Loosen the hooks front panels.
  • Page 321 GREE GMV5 HR HEAT RECOVERY UNITS Electric expansion valve Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Weld the connecting pipes with the electric expansion valve. ● Before welding, cover the valve with wet cloth.
  • Page 322 GREE GMV5 HR HEAT RECOVERY UNITS Oil separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
  • Page 323 GREE GMV5 HR HEAT RECOVERY UNITS Oil separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Weld the four pipe joints with the oil separator. During welding, charge nitrogen into the pipes.
  • Page 324 GREE GMV5 HR HEAT RECOVERY UNITS Gas/liquid separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
  • Page 325 GREE GMV5 HR HEAT RECOVERY UNITS Gas/liquid separator Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Put the gas/liquid separator based on the position of the suction and discharge pipes and weld the pipes with the gas/liquid separator.
  • Page 326 GREE GMV5 HR HEAT RECOVERY UNITS Heat exchanging board Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ● Remove the upper and lower front 1. Loosen the hooks at panels.
  • Page 327 GREE GMV5 HR HEAT RECOVERY UNITS Heat exchanging board Precondition: No refrigerant exists in the pipeline system and the power supply has been disconnected. Step Diagram Operation Procedure ●Screw the support of the heat exchanging board and fix the board onto the chassis.
  • Page 328 GREE GMV5 HR HEAT RECOVERY UNITS Assembly and Disassembly of Mode Exchanger Take the one-to-two mode exchanger as an example Step Diagram Operation Procedure ● Remove screws used for fixing the Remove the sealing plate, and then remove the sealing plate sealing plate 1 and the sealing plate 2.

  • Page 329: Unit Maintenance

    (5) Turn the power switch on 8 hours beforehand to pre-heat the outdoor compressor crankcase before the unit is restarted after being in idle status for a long time. (6) Check ODU installation. If an abnormality is found, contact GREE’s special maintenance center.

  • Page 330: Part 4 Appendixes

    GREE GMV5 HR HEAT RECOVERY UNITS PART 4 APPENDIXES 1 MINUTES ABOUT A DEBUG SOLUTION CONFIRMATION MEETING Confirming air conditioner debug solution to the *** project Theme: *** Time: *** Place: *** Participants: *** Contents: *** 2 VISUAL INSPECTION CHECKLIST OF...

  • Page 331: Common Parameter Lists

    GREE GMV5 HR HEAT RECOVERY UNITS Project name Unit model Debugged by Date ODU rated capacity General IDU rated Total length of refrigerant (kW) capacity (kW) pipes (m) Maximum fall of IDUs Fill amount of refrigerant (kg) Debug state: Refrigerating...
  • Page 332 GREE GMV5 HR HEAT RECOVERY UNITS Corresponding Corresponding Corresponding Temperature Temperature Temperature saturation pressure saturation pressure saturation pressure °F °F °F ° C ° C ° C -13.0 3.32 48.15 48.2 10.61 153.89 109.4 26.18 379.71 -11.2 3.45 50.04 50.0 10.93...
  • Page 333 GREE GMV5 HR HEAT RECOVERY UNITS Temperature Resistance Voltage Temperature Resistance Voltage °F °F kΩ kΩ ° C ° C 38.15 0.931 204.8 1.136 3.068 42.8 36.32 0.965 206.6 1.103 3.074 44.6 34.58 0.998 208.4 1.071 3.08 46.4 32.94 1.033 210.2...
  • Page 334 GREE GMV5 HR HEAT RECOVERY UNITS Temperature Resistance Voltage Temperature Resistance Voltage °F °F kΩ kΩ ° C ° C 127.4 4.802 289.4 0.322 3.231 129.2 4.625 2.522 291.2 0.314 3.232 4.456 2.544 0.307 3.234 132.8 4.294 2.566 294.8 0.299 3.235...
  • Page 335 GREE GMV5 HR HEAT RECOVERY UNITS Temperature Resistance Voltage Temperature Resistance Voltage °F °F kΩ kΩ ° C ° C 21.2 89.17 0.605 1.818 3.025 84.61 0.631 195.8 1.763 3.033 24.8 80.31 0.658 197.6 1.71 3.04 26.6 76.24 0.686 199.4 1.658...
  • Page 336 GREE GMV5 HR HEAT RECOVERY UNITS Temperature Resistance Voltage Temperature Resistance Voltage °F °F kΩ kΩ ° C ° C 105.8 10.2 2.185 278.6 0.4966 3.22 107.6 9.803 2.215 280.4 0.4845 3.222 109.4 9.42 2.243 282.2 0.4727 3.224 111.2 9.054 2.272...
  • Page 337 GREE GMV5 HR HEAT RECOVERY UNITS Temperature Resistance Voltage Temperature Resistance Voltage °F °F kΩ kΩ ° C ° C 323.94 0.099 172.4 6.542 1.995 10.4 306.23 0.104 174.2 6.3315 2.021 12.2 289.61 0.11 6.1288 2.046 274.02 0.116 177.8 5.9336 2.071...
  • Page 338 GREE GMV5 HR HEAT RECOVERY UNITS Temperature Resistance Voltage Temperature Resistance Voltage °F °F kΩ kΩ ° C ° C 93.2 33.453 0.759 1.6821 2.825 32.088 0.784 258.8 1.6402 2.835 96.8 30.787 0.809 260.6 1.5996 2.845 98.6 29.544 0.835 262.4 1.5602...
  • Page 339 GREE GMV5 HR HEAT RECOVERY UNITS Temperature Absolute pressure Voltage Temperature Absolute pressure Voltage °F °F ° C ° C -14.8 46.3 0.255 1897 275.1 1.937 48.1 0.268 87.8 1946 282.2 1.989 -11.2 0.282 89.6 1996 289.4 2.042 -9.4 52.1 0.297...
  • Page 340 GREE GMV5 HR HEAT RECOVERY UNITS 4.3.2 Low-pressure sensor (R410a) Temperature Absolute pressure Voltage Temperature Absolute pressure Voltage °F °F ° C ° C 0.369 72.8 1.301 -92.2 0.373 75.4 1.337 -90.4 0.377 10.4 1.373 -88.6 0.383 12.2 80.9 1.413 -86.8...

  • Page 341: Exploded Views And Spare Part List

    GREE GMV5 HR HEAT RECOVERY UNITS Temperature Absolute pressure Voltage Temperature Absolute pressure Voltage °F °F ° C ° C 48.1 0.961 87.8 1946 282.2 4.189 -11.2 0.987 89.6 1996 289.4 4.289 -9.4 52.1 1.015 91.4 2048 4.393 -7.6 54.1 1.043...
  • Page 342 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) Name of part Product Code CN851W1590 Product Code CN851W1600 Part code Quantity Part code Quantity Rear Grill '01574100002 '01574100002 Coping '01264100006P '01264100006P Diversion Circle '10474100002 '10474100002 Axial Flow Fan '10434100002 '10434100002 Fan Motor...
  • Page 343 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q72WM/B-F(U) GMV-Q96WM/B-F(U) Name of part Product Code CN851W1590 Product Code CN851W1600 Part code Quantity Part code Quantity Magnet Coil (electromagnetic valve) '4304000461 '4304000461 Magnet Coil (electromagnetic valve) '4304000459 '4304000459 Magnet Coil (electromagnetic valve) '4304000460...
  • Page 344 GREE GMV5 HR HEAT RECOVERY UNITS 5.2 GMV-Q120WM/B-F(U)/ GMV-Q144WM/B1-F(U) GMV-Q144WM/B1-F(U) GMV-Q120WM/B-F(U) Name of part Product Code CN851W1670 Product Code CN851W2500 Part code Quantity Part code Quantity '01574100002 '01574100002 Rear Grill '01264100006P '01264100006P Coping 10474100002 10474100002 Diversion Circle '10434100002 '10434100002 Axial Flow Fan...
  • Page 345 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q144WM/B1-F(U) GMV-Q120WM/B-F(U) Name of part Product Code CN851W1670 Product Code CN851W2500 Part code Quantity Part code Quantity '072190511 '072190511 One way Valve '07334390 '07334390 Electromagnetic Valve 07334447 07334447 Electronic Expansion Valve '43000072 '43000072 Gas Tube Filter...
  • Page 346 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q144WM/B1-F(U) GMV-Q120WM/B-F(U) Name of part Product Code CN851W1670 Product Code CN851W2500 Part code Quantity Part code Quantity '300027000545 '300027000545 One Way Valve '46010604 '46010604 Pressure Protect Switch 30228000010 30228000010 Pressure Protect Switch '30229009 '30229009...
  • Page 347 GREE GMV5 HR HEAT RECOVERY UNITS 5.3 GMV-Q168WM/B1-F(U) GMV-Q168WM/B1-F(U) Name of part Product Code CN851W2510 Part code Quantity Rear Grill 01574100002 Coping 01264100006P Diversion Circle 10474100002 Axial Flow Fan 02204102 Fan Motor 15704119 '43000339 4-way Valve '06120012 Nozzle for Adding Freon...
  • Page 348 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q168WM/B1-F(U) Name of part Product Code CN851W2510 Part code Quantity Pressure Protect Switch '4602000911 Pressure Protect Switch 4602000912 One Way Valve '07333700032 Right Side Plate 012056500021P Electromagnetic Valve '43000072 Electromagnetic Valve '43000055 Electromagnetic Valve...
  • Page 349 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q168WM/B1-F(U) Name of part Product Code CN851W2510 Part code Quantity Pressure Sensor 32218000008 Electric Heater(Compressor) 7651540714 Electric Heater(Compressor) 7651540714 Sensor Sub-assy 39008000119G Electric Box Assy 100002002650 Filter Board 30228000032 Main Board 30223000046 Radiator 49018000001...
  • Page 350 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) Name of part Product Code CN851W2060 Product Code CN851W2030 Part code Quantity Part code Quantity Rear Grill '01574100002 '01574100002 Coping '01264100006P '01264100006P Diversion Circle 10474100002 '10474100002 Axial Flow Fan '10434100002 '10434100002 Fan Motor...
  • Page 351 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q72WM/B-U(U) GMV-Q96WM/B-U(U) Name of part Product Code CN851W2060 Product Code CN851W2030 Part code Quantity Part code Quantity Magnet Coil 4304000440 '4304000440 Magnet Coil 4304000425 '4304000430 Magnet Coil 4300040062 '4300040030 Magnet Coil 4300040030 '4300040064 Magnet Coil...
  • Page 352 GREE GMV5 HR HEAT RECOVERY UNITS 5.5 GMV-Q120WM/B-U(U) GMV-Q120WM/B-U(U) Name of part Product Code CN851W2010 Part code Quantity Rear Grill '01574100002 Coping '01264100006P Diversion Circle '10474100002 Axial Flow Fan '10434100002 Brushless DC Motor '15704124 Nozzle for Adding Freon '06120012 4-way Valve...
  • Page 353 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q120WM/B-U(U) Name of part Product Code CN851W2010 Part code Quantity Bidirection Strainer '07210044 Electronic Expansion Valve '07331139 One way Valve '04324001 Electromagnetic Valve '43000072 Electronic Expansion Valve '07334412 Gas Tube Filter '072190511 Dry Filter...
  • Page 354 GREE GMV5 HR HEAT RECOVERY UNITS GMV-Q120WM/B-U(U) Name of part Product Code CN851W2010 Part code Quantity Compressor and Fittings '00204100016 Compressor and Fittings '00204116 One Way Valve '07333700032 Pressure Protect Switch '4602000912 Pressure Protect Switch '4602000911 Electric Box Sub-Assy '017007000394P...
  • Page 355 GREE GMV5 HR HEAT RECOVERY UNITS 5.6 NCHS1B(U) NCHS1B(U) Name of part Product Code EN04001120 Part code Quantity Coping '01264100055P Terminal Board '420111451 Pinboard '30270000002 Terminal Board '42018000026 Electromagnetic Valve '43000073 Chassis '01284100129P Seal plate '01494100015P Side Plate '01314100096P Hook...
  • Page 356 GREE GMV5 HR HEAT RECOVERY UNITS NCHS1B(U) Name of part Product Code EN04001120 Part code Quantity Magnet Coil 4304000447 Magnet Coil 4304000448 Tube sensor '3900012128G Temperature Sensor '390000372G 5.7 NCHS2B(U) NCHS2B(U) Name of part Product Code EN01600010 Part code Quantity...
  • Page 357 GREE GMV5 HR HEAT RECOVERY UNITS NCHS2B(U) Name of part Product Code EN01600010 Part code Quantity Choke plug of Drain Pipe 76712455 Seal Plate 012034000091 Hook 02112446 Side Plate 017110000026 Cover Plate 012035000094 Strainer 0741410000601 Electronic Expansion Valve 07334463 Seal Plate...
  • Page 358 GREE GMV5 HR HEAT RECOVERY UNITS 5.8 NCHS4B(U) NCHS4B(U) Name of part Product Code EN04001130 Part code Quantity Coping '01264100058P Terminal Board '420111451 Terminal Board '42018000026 Pinboard '30270000002 Chassis '01284100135P Water Tray Sub-Assy '01284100147P Electromagnetic Valve '43000073 Strainer '07415200002 Electromagnetic Valve...
  • Page 359 GREE GMV5 HR HEAT RECOVERY UNITS NCHS4B(U) Name of part Product Code EN04001130 Part code Quantity Hook '02112446 Side Plate '01314100100P Strainer '0741410000601 Electronic Expansion Valve '07334463 Seal plate '01494100017P Magnet Coil '4304000428 Magnet Coil 4304000448 Magnet Coil 4304000447 Magnet Coil...
  • Page 360 GREE GMV5 HR HEAT RECOVERY UNITS 5.9 NCHS8B(U) NCHS8B(U) Name of part Product Code EN04001140 Part code Quantity Coping 012020060142P Terminal Board 422000000014 Terminal Board 42018000026 Pinboard 300023000009 Chassis '01284100142P Water Tray Sub-Assy '01284100153P Electromagnetic Valve '43000073 Strainer '07415200002 Electromagnetic Valve...
  • Page 361 GREE GMV5 HR HEAT RECOVERY UNITS NCHS8B(U) Name of part Product Code EN04001140 Part code Quantity Side Plate '01314100102P Top Cover 01264100059P Strainer '0741410000601 Electronic Expansion Valve '07334463 Seal plate '01494100017P Magnet Coil '4304000428 Magnet Coil '4304000448 Magnet Coil '4304000447...
  • Page 362 JF00302879...

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