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Mitsubishi Electric CITY MULTI PEFY-W20VMA-A Technical & Service Manual

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Summary of Contents for Mitsubishi Electric CITY MULTI PEFY-W20VMA-A

  • Page 2 - Forced operation of the pressure switch or the temperature switch by defeat- ing the safety features for these devices, or the use of accessories other than Indicates important instructions. the ones that are recommended by Mitsubishi Electric may result in smoke, fire, or explosion. Consult your dealer for proper disposal method.
  • Page 3 HWE18200...

  • Page 4: Table Of Contents

    CONTENTS I Features [1] Features............................ 1 II Components and Functions [1] Components and Functions...................... 2 III Specifications [1] Specifications..........................5 1.Specifications.......................... 5 2.Electrical component specifications..................12 IV Outlines and Dimensions [1] Outlines and Dimensions......................15 V Wiring Diagram [1] Wiring Diagram ........................21 VI Refrigerant System Diagram [1] Refrigerant system diagram....................
  • Page 5 HWE18200...

  • Page 6: Features

    [ I Features ] I Features [1] Features Model Cooling capacity/Heating capacity PEFY-W20VMA(L)(2)-A 2.2/2.5 PEFY-W25VMA(L)(2)-A 2.8/3.2 PEFY-W32VMA(L)(2)-A 3.6/4.0 PEFY-W40VMA(L)(2)-A 4.5/5.0 PEFY-W50VMA(L)(2)-A 5.6/6.3 PEFY-W63VMA(L)(2)-A 7.1/8.0 PEFY-W71VMA(L)(2)-A 8.0/9.0 PEFY-W80VMA(L)(2)-A 9.0/10.0 PEFY-W100VMA(L)(2)-A 11.2/12.5 PEFY-W125VMA(L)(2)-A 14.0/16.0 - 1 - HWE18200...

  • Page 7: Components And Functions

    [ II Components and Functions ] II Components and Functions [1] Components and Functions 1. Indoor (Main) Unit (1) In case of rear inlet (2) In case of bottom inlet Air inlet Air inlet Air outlet Air outlet 2. Remote Controller [PAR-32MAA] Once the operation mode is selected, the unit will remain in the selected mode until changed.
  • Page 8 [ II Components and Functions ] (1) Remote Controller Buttons Ⓔ Ⓕ Ⓓ Ⓒ Ⓑ Ⓐ Function buttons Ⓖ Ⓗ Ⓘ Ⓙ ▌Ⓐ [ON/OFF] button The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for Press to turn ON/OFF the indoor unit.
  • Page 9 [ II Components and Functions ] (2) Remote Controller Display The main display can be displayed in two different modes: "Full" and "Basic." The factory setting is "Full." To switch to the "Basic" mode, change the setting on the "Main display" setting screen (Main menu > Initial setting > Main display).

  • Page 10: Specifications

    [ III Specifications ] III Specifications [1] Specifications 1. Specifications Model PEFY- PEFY- PEFY- PEFY- W20VMA(L)- W25VMA(L)- W32VMA(L)- W40VMA(L)- Power supply Voltage 1-phase 220-230-240 Frequency Cooling capacity Heating capacity Power consumption Cooling 0.032(0.030) 0.044(0.042) 0.047(0.045) Heating 0.030 0.042 0.045 Current consumption Cooling 0.26 0.36...
  • Page 11 [ III Specifications ] Model PEFY- PEFY- PEFY- PEFY- W50VMA(L)- W63VMA(L)- W71VMA(L)- W80VMA(L)- Power supply Voltage 1-phase 220-230-240 Frequency Cooling capacity Heating capacity 10.0 Power consumption Cooling 0.093(0.091) Heating 0.091 Current consumption Cooling 0.68 Heating 0.68 External finish Galvanized Dimensions Height Width 1100...
  • Page 12 [ III Specifications ] Model PEFY-W100VMA(L)-A PEFY-W125VMA(L)-A Power supply Voltage 1-phase 220-230-240 Frequency Cooling capacity 11.2 14.0 Heating capacity 12.5 16.0 Power consumption Cooling 0.142(0.140) 0.199(0.197) Heating 0.140 0.197 Current consumption Cooling 1.01 1.29 Heating 1.01 1.29 External finish Galvanized Dimensions Height Width...
  • Page 13 [ III Specifications ] Model PEFY-W20VMA2-A PEFY-W25VMA2-A Power supply Voltage 1-phase 220-230-240 Frequency Cooling capacity Heating capacity Power consumption Cooling 0.093 Heating 0.091 Current consumption Cooling 0.68 Heating 0.68 External finish Galvanized Dimensions Height Width 1100 Depth Net weight Heat exchanger Cross fin (Aluminium fin and copper tube) Type Sirocco fan x 2...
  • Page 14 [ III Specifications ] Model PEFY- PEFY- PEFY- W32VMA2-A W40VMA2-A W50VMA2-A Power supply Voltage 1-phase 220-230-240 Frequency Cooling capacity Heating capacity Power consumption Cooling 0.208 Heating 0.206 Current consumption Cooling 1.40 Heating 1.40 External finish Galvanized Dimensions Height Width 1100 1600 Depth Net weight...
  • Page 15 [ III Specifications ] Model PEFY- PEFY- PEFY- W63VMA2-A W71VMA2-A W80VMA2-A Power supply Voltage 1-phase 220-230-240 Frequency Cooling capacity Heating capacity 10.0 Power consumption Cooling 0.208 Heating 0.206 Current consumption Cooling 1.40 Heating 1.40 External finish Galvanized Dimensions Height Width 1600 Depth Net weight...
  • Page 16 [ III Specifications ] Model PEFY- PEFY- W100VMA2-A W125VMA2-A Power supply Voltage 1-phase 220-230-240 Frequency Cooling capacity 11.2 14.0 Heating capacity 12.5 16.0 Power consumption Cooling 0.208 Heating 0.206 Current consumption Cooling 1.40 Heating 1.40 External finish Galvanized Dimensions Height Width 1600 Depth...

  • Page 17: Electrical Component Specifications

    [ III Specifications ] 2. Electrical component specifications Component Sym- PEFY-W20/25/32VMA(L)-A Room temperature TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Water inlet pipe TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Water outlet pipe TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Fuse AC250V 6.3A...
  • Page 18 [ III Specifications ] Component Sym- PEFY-W40/50/63/71/80VMA(L)-A PEFY-W20/25/32/40VMA2-A Room temperature TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Water inlet pipe TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Water outlet pipe TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Fuse AC250V 6.3A...
  • Page 19 [ III Specifications ] Component Sym- PEFY-W100/125VMA(L)-A PEFY-W50/63/71/80/100/125VMA2-A Room temperature TH21 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Water inlet pipe TH22 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Water outlet pipe TH23 Resistance 0°C/15kΩ, 10°C/9.6kΩ, 20°C/6.3kΩ, 25°C/5.4kΩ, 30°C/4.3kΩ, 40°C/3.0kΩ thermistor Fuse AC250V 6.3A...

  • Page 20: Outlines And Dimensions

    [ IV Outlines and Dimensions ] IV Outlines and Dimensions [1] Outlines and Dimensions 1. PEFY-W20, 25, 32, 40, 50, 63, 71, 80, 100, 125VMA-A Unit: mm - 15 - HWE18200...
  • Page 21 [ IV Outlines and Dimensions ] Unit: mm - 16 - HWE18200...
  • Page 22 [ IV Outlines and Dimensions ] 2. PEFY-W20, 25, 32, 40, 50, 63, 71, 80, 100, 125VMAL-A Unit: mm - 17 - HWE18200...
  • Page 23 [ IV Outlines and Dimensions ] Unit: mm - 18 - HWE18200...
  • Page 24 [ IV Outlines and Dimensions ] 3. PEFY-W20, 25, 32, 40, 50, 63, 71, 80, 100, 125VMA2-A Unit: mm - 19 - HWE18200...
  • Page 25 [ IV Outlines and Dimensions ] Unit: mm - 20 - HWE18200...

  • Page 26: Wiring Diagram

    [ V Wiring Diagram ] V Wiring Diagram [1] Wiring Diagram 1. PEFY-W20, 25, 32, 40, 50, 63, 71, 80, 100, 125VMA(L)-A - 21 - HWE18200...
  • Page 27 [ V Wiring Diagram ] 2. PEFY-W20, 25, 32, 40, 50, 63, 71, 80, 100, 125VMA2-A - 22 - HWE18200...

  • Page 28: Refrigerant System Diagram

    [ VI Refrigerant System Diagram ] VI Refrigerant System Diagram [1] Refrigerant system diagram Water outlet thermistor TH23 Water outlet Water inlet Connections Water inlet thermistor TH22 Pressure sensor (inner water) PS1 (G) Pressure sensor (outlet water) PS2 Flow control valve FCV Heat exchanger Manual air purge valve Room temperature thermistor TH21...

  • Page 29: Troubleshooting

    [ VII Troubleshooting ] VII Troubleshooting [1] Troubleshooting 1. Check methods 1. Component and check points (1) Thermistor Room temperature thermistor (TH21) Water inlet thermistor (TH22) Water outlet thermistor (TH23) Disconnect the connector and measure the resistance between terminals with a volt meter. (Ambient temperature 10°C - 30°C) Normal Abnormal...
  • Page 30 [ VII Troubleshooting ] 1) Summary of flow control valve (FCV) operation The FCV is operated by a stepping motor, which operates by receiving a pulse signal from the indoor control board. The FCV position changes in response to the pulse signal. Indoor control board and FCV connection Limit signal (Opening...
  • Page 31 [ VII Troubleshooting ] 2) FCV operation Close Open Fully open valve (85 pulses) Fully close valve (770 pulses) No. of pulses Valve opening degree (4) Pressure sensor Pressure sensor (inner water) PS1 Pressure sensor (outlet water) PS2 1) Check that the pressure sensor is connected. 2) Check the pressure sensor wiring for breakage.

  • Page 32: Dc Fan Motor (Fan Motor/Indoor Control Board)

    [ VII Troubleshooting ] 2. DC fan motor (fan motor/indoor control board) 1. CAUTION A high voltage is applied to the connector for connection to the fan motor (CNMF). Do not unplug the connector CNMF with the unit energized to avoid damage to the indoor control board and fan motor. 2.

  • Page 33: Address Switch Setting

    [ VII Troubleshooting ] 3. Address switch setting Make sure that power source is turning off. Indoor unit control board Incase using network remote controller, address is set by rotary switches.(SW11,SW12) * It is not necessary setting address in case of using unit remote controller. Indoor unit do not run without address setting in field.

  • Page 34: Voltage Test Points On The Control Board

    [ VII Troubleshooting ] 4. Voltage test points on the control board 1. PEFY-W20, 25, 32, 40, 50, 63, 71, 80, 100, 125VMA(L)(2)-A Fuse (AC 250V 6.3A) Power supply voltage (220 - 240VAC) CN2M CN2M For M-NET transmission cable connection (24 - 30VDC) Emergency operation CN32 Remote start/stop adapter...

  • Page 35: Dipswitch Setting (Factory Setting)

    [ VII Troubleshooting ] 5. Dipswitch setting (Factory setting) 1. Function setting (1) SW1 Switch position Function Switch setting Active Thermistor (Intake air Built-in thermistor on the remote Indoor unit thermistor) controller Filter clogging detection Available Unavailable Filter life 2500 hr 100 hr Outdoor air intake Enabled...
  • Page 36 [ VII Troubleshooting ] 2. Capacity code setting (1) SW2 1) Indoor control board Dipswitch settings must be made while the unit is stopped. Factory setting The switches are set to correspond to the unit capacity. PEFY-W20VMA(L)(2)-A PEFY-W25VMA(L)(2)-A PEFY-W32VMA(L)(2)-A PEFY-W40VMA(L)(2)-A PEFY-W63VMA(L)(2)-A PEFY-W71VMA(L)(2)-A PEFY-W80VMA(L)(2)-A...
  • Page 37 [ VII Troubleshooting ] 5. External static pressure Five levels of external static pressure are available for selection. Set the setting either by using the switches on the control board (SW21-1, SW21-2, and SW21-5) or from the function selection screen on the remote controller. Note: When the static pressure setting was set from the remote controller, the actual setting and the switch setting on the control board may not match because the latest setting from the remote controller overrides the previous setting.
  • Page 38 [ VII Troubleshooting ] 6. 1s and 10ths digits (1) SW11, SW12 (Rotary switch) The use of a network remote controller (PAR-F27MEA) requires address setting. Address settings must be made while the unit is stopped. Factory setting 7. Connection No. setting (1) SW14 (Rotary switch) This switch is used when the unit connected to an R2 series of outdoor unit.

  • Page 39: Disassembly Procedure

    [ VIII Disassembly Procedure ] VIII Disassembly Procedure [1] Disassembly Procedure 1. Control box Exercise caution when removing heavy parts. 1. Removing the control box cover (1) Remove the three fixing screws on the cover (A) to re- move it. Fig.1 Fig.2 - 34 -...

  • Page 40: Thermistor (Intake Air)

    [ VIII Disassembly Procedure ] 2. Thermistor (Intake air) Exercise caution when removing heavy parts. 1. Remove the control box cover according to the procedure in section 1. 2. Remove the thermistor. (1) Pull out the thermistor holder (B) and thermistor (C) on the control box.

  • Page 41: Drainpan

    [ VIII Disassembly Procedure ] 4. Drainpan Exercise caution when removing heavy parts. 1. Removing the filter and the bottom plate (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow 1. (2) Remove the fixing screws on the bottom plate (D), (E) to remove it.

  • Page 42: Thermistor (Water Outlet) (Water Inlet)

    [ VIII Disassembly Procedure ] 5. Thermistor (Water outlet) (Water inlet) Exercise caution when removing heavy parts. 1. Remove the drain pan according to the procedure in section 4. 2. Removing the Heat exchanger cover (1) Remove the three fixing screws on the heat exchanger cover (F) to remove it.

  • Page 43: Fan And Fan Motor

    [ VIII Disassembly Procedure ] 6. Fan and fan motor Exercise caution when removing heavy parts. 1. Removing the filter and the bottom plate (1) Push down the tab on the filter, and pull out the filter in the direction of the arrow 1. (2) Remove the fixing screws on the bottom plate (J) to re- move it.

  • Page 44: Heat Exchanger (Pressure Sensor And Fcv)

    [ VIII Disassembly Procedure ] 7. Heat exchanger (Pressure sensor and FCV) Exercise caution when removing heavy parts. 1. Remove the drain pan according to the procedure in section 4. 2. Remove the heat exchanger cover according to the proce- dure in section 5.
  • Page 45 [ VIII Disassembly Procedure ] 6. Removing the FCV (1) Remove the clips (P) on the inlet/outlet of the FCV. (Fig. 17) (2) Remove the inlet/outlet piping connecting the FCV. (Fig. 17) Fig.17 (3) Remove the nipple (Q) (and O-ring (R)) from the FCV. (Fig.18) (4) After removing the nipple (and O-ring), check the O-ring on the sleeve for damage.

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