1. Manuals
  2. Brands
  3. Mitsubishi Electric Manuals
  4. Air Conditioner
  5. PUHZ-P100VHA2
  6. Service manual

Mitsubishi Electric PUHZ-P100VHA2 Service Manual

Split-type, heat pump air conditioners
Hide thumbs
Table of Contents

Advertisement

Quick Links

SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
R410A
Outdoor unit
[model names]
PUHZ-P100VHA2
PUHZ-P125VHA2
PUHZ-P140VHA2
PUHZ-P100VHA2.UK
[Service Ref.]
PUHZ-P100VHA2.UK
PUHZ-P125VHA2.UK
PUHZ-P125VHA2
PUHZ-P140VHA2.UK
PUHZ-P140VHA2
REVISED EDITION-A
Revision:
• PUHZ-P125/140VHA2
• Some descriptions have
•
.UK
1
Note:
• This manual describes only
.UK
1
• RoHS compliant products
CONTENTS
1. TECHNICAL CHANGES·································2
2. REFERENCE MANUAL··································2
3. SAFETY PRECAUTION··································3
4. FEATURES ·····················································6
5. SPECIFICATIONS···········································7
6. DATA ·······························································8
7. OUTLINES AND DIMENSIONS ····················11
8. WIRING DIAGRAM ·······································13
9. WIRING SPECIFICATIONS ··························14
10. REFRIGERANT SYSTEM DIAGRAM··············19
11. TROUBLESHOOTING···································21
12. FUNCTION SETTING····································70
13. EASY MAINTENANCE FUNCTION ··············77
15. DISASSEMBLY PROCEDURE ·····················90
PARTS CATALOG (OCB415)
February 2008
No.OCH415
.UK
1
are added in REVISED
EDITION-A.
been modified.
Please void OCH415.
service data of the outdoor
units.
have <G> mark on the
spec name plate.

Advertisement

Table of Contents
loading

Related Manuals for Mitsubishi Electric PUHZ-P100VHA2

Summary of Contents for Mitsubishi Electric PUHZ-P100VHA2

  • Page 1: Table Of Contents

    February 2008 No.OCH415 REVISED EDITION-A SERVICE MANUAL R410A Outdoor unit Revision: [Service Ref.] [model names] • PUHZ-P125/140VHA2 are added in REVISED EDITION-A. PUHZ-P100VHA2.UK PUHZ-P100VHA2 • Some descriptions have been modified. PUHZ-P125VHA2.UK PUHZ-P125VHA2 Please void OCH415. • PUHZ-P125VHA2 PUHZ-P140VHA2.UK PUHZ-P140VHA2 Note: •...

  • Page 2: Technical Changes

    TECHNICAL CHANGES PUHZ-P125VHA2 PUHZ-P125VHA2 PUHZ-P140VHA2 PUHZ-P140VHA2 4-WAY VALVE and COIL(21S4) have been changed. REFERENCE MANUAL INDOOR UNIT’S SERVICE MANUAL Service Model name Service Ref. Manual No. PLA-RP50/60/71/100/125/140BA PLA-RP50/60/71/100/125/140BA.UK OCH412 OCB412 PCA-RP50/60/71/100/125/140GA PCA-RP50/60/71/100/125/140GA OC328 PCA-RP50GA2 PCA-RP50GA2 PCA-RP71/125HA PCA-RP71/125HA OC329 PKA-RP50GAL PKA-RP50GAL OC330 PKA-RP60/71/100FAL PKA-RP60/71/100FAL...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION 3-1. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. In case of using the existing pipes for R22, be careful with If other refrigerant (R22 etc.) is used, chlorine in refrige- the followings.
  • Page 4 Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. Tool name Specifications Gauge manifold ·Only for R410A ·Use the existing fitting specifications . (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·Only for R410A ·Use pressure performance of 5.09MPa·G or over.
  • Page 5 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.

  • Page 6: Features

    FEATURES PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA2 PUHZ-P100VHA2.UK CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m(PUHZ-P125/P140)) The refrigerant circuit with LEV(Linear Expansion Valve) and Accumulator always control the optimal refrigerant level regardless of the length (30m max. and 5m min.) of piping. The additional refrigerant charging work during installation often causes problems.

  • Page 7: Specifications

    SPECIFICATIONS Service Ref. PUHZ-P100VHA2.UK Cooling Heating Mode Power supply (phase, cycle, voltage) Single, 50Hz, 230V Running current 12.26 12.62 Max. current External finish Munsell 5Y 7/1 Refrigerant control Linear Expansion Valve Hermetic Compressor TNB220FLHMT Model Motor output Starter type Line start...

  • Page 8: Data

    DATA 6-1. REFILLING REFRIGERANT CHARGE (R410A : kg) Piping length (one way) Initial Service Ref. charged PUHZ-P100VHA2.UK PUHZ-P125VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA2.UK PUHZ-P140VHA2 Longer pipe than 20 or 30m, additional charge is required. 6-2. COMPRESSOR TECHNICAL DATA (at 20°C) PUHZ-P125,140VHA2.UK Unit PUHZ-P100VHA2.UK...
  • Page 9 6-3. NOISE CRITERION CURVES PUHZ-P100VHA2.UK SPL(dB) MODE LINE MICROPHONE COOLING HEATING UNIT 1.5m NC-70 NC-60 GROUND NC-50 NC-40 NC-30 APPROXIMATE THRESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK SPL(dB) MODE LINE...
  • Page 10 Volts 0.14 0.13 0.15 0.14 0.16 0.15 Input 0.94 0.87 1.00 0.94 1.07 1.00 Amperes PUHZ-P100VHA2 PUHZ-P125VHA2 PUHZ-P140VHA2 Outdoor unit 1 , 50 1 , 50 Phase , Hz 1 , 50 Volts Current 12.26 12.62 17.37 16.74 22.48 21.31 2.90...

  • Page 11: Outlines And Dimensions

    OUTLINES AND DIMENSIONS OUTDOOR UNIT Unit : mm(inch) PUHZ-P100VHA2.UK...
  • Page 12 PUHZ-P125VHA2.UK Unit : mm(inch) PUHZ-P140VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA2...

  • Page 13: Wiring Diagram

    WIRING DIAGRAM PUHZ-P100VHA2.UK PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA2 SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor > P.B. Power Circuit Board Switch Motor Compressor TABU/V/W Connection Terminal<U/V/W-Phase> Switch MF1,MF2 Fan Motors TABS/T Switch<Pump Down> Connection Terminal<L/N- Phase> 21S4 Solenoid Valve (Four-Way Valve) CN31 Connector<Emergency Operation>...

  • Page 14: Wiring Specifications

    WIRING SPECIFICATIONS 9-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model P100, 125V P140V Outdoor unit power supply ~/N (single), 50 Hz, ~/N (single), 50 Hz, 230 V 230 V Outdoor unit input capacity 32 A 40 A Main switch (Breaker) 2 o Min.
  • Page 15 9-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES The following connection patterns are available. The outdoor unit power supply patterns vary on models. 1:1 System A Outdoor unit power supply <For models without heater> B Earth leakage breaker * The optional indoor power supply terminal kit is required. C Wiring circuit breaker or isolating switch D Outdoor unit E Indoor unit/outdoor unit connecting cords...
  • Page 16 9-3. INDOOR – OUTDOOR CONNECTING CABLE The cable shall not be lighter than design 60245 IEC or 60227 IEC. The cable length may vary depending on the condition of installation, humidity or materials, etc. Wire size Cross section Number Polarity L(m) 5 of cable of wires...
  • Page 17 9-4. M-NET WIRING METHOD (Points to notice) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same conduit tube.
  • Page 18 M-NET wiring (1) Use 2-core x 1.25mm shield wire for electric wires. M-NET terminal (Excluding the case connecting to system controller.) Ground block wire (2) Connect the wire to the M-NET terminal block. Connect one core of the trans- mission wire (non-polar) to A terminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.

  • Page 19: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Unit : mm(inch) PUHZ-P100VHA2.UK Refrigerant flow in cooling Refrigerant flow in heating Service High pressure port protect switch (check) Stop valve Outdoor heat exchanger 4-way valve (#50) Thermistor Refrigerant GAS pipe Strainer (TH6) 15.88mm([5/8) Thermistor Service (TH3)
  • Page 20 1. Refrigerant recovery (pump down) Perform the following procedures to recover the refrigerant when moving the indoor unit or the outdoor unit. 1Turn on the power supply (circuit breaker). wWhen power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CEN- TRALLY CONTROLLED”...

  • Page 21: Troubleshooting

    TROUBLESHOOTING 11-1. TROUBLESHOOTING <Error code display by self-diagnosis and actions to be taken for service (summary)> Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring at service, are summarized in the table below.
  • Page 22 Operating procedures While the room temperature display on the remote "TEST RUN" and the currently selected controller is “PLEASE WAIT”, the remote controller is disabled. operation mode are displayed alternately. Wait until “PLEASE WAIT” disappears before using remote controller. 1. Turn on the main power supply. “PLEASE WAIT”...
  • Page 23 Test run [for wireless remote controller] Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M". TEST RUN 1 Turn on the main power to the unit. TEST RUN 2 Press the button twice continuously.
  • Page 24 11-3. HOW TO PROCEED "SELF-DIAGNOSIS" 11-3-1. When a Problem Occurs During Operation If a problem occurs in the air conditioner, the indoor and outdoor units will stop, and the problem is shown in the remote controller display. [CHECK] and the refrigerant address are displayed on the temperature display, and the error code and unit number are displayed alternately as shown below.
  • Page 25 When the error history is reset, the display will look like the one shown below. Press the button twice within 3 seconds. The self-diagnosis ON/OFF However, if you fail to reset the error history, the error content will be displayed again. address or refrigerant address will flash.
  • Page 26 11-3-4. Malfunction-diagnosis method by wireless remote controller <In case of trouble during operation> When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. < Malfunction-diagnosis method at maintenance service> [Procedure] 1.
  • Page 27 • Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep OPERATION · · · Repeated INDICATOR lamp blink pattern Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
  • Page 28 11-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is turned on> (Note 1) Refer to indoor unit section for code P and code E. Error Code Abnormal points and detection method Judgment and action Case 1 No voltage is supplied to terminal 1 Check following items.
  • Page 29 Error Code Abnormal points and detection method Case Judgment and action 1 Contact failure or miswiring of 1 Check disconnection or looseness or polarity Indoor/outdoor unit connector indoor/outdoor unit connecting of indoor/outdoor unit connecting wire of miswiring, excessive number of units (4 indoor and outdoor units.
  • Page 30 <Abnormalities detected while unit is operating> Error Code Abnormal points and detection method Judgment and action Case High pressure (High-pressure switch 1 Short cycle of indoor unit 1~6Check indoor unit and repair defect. 2 Clogged filter of indoor unit 63H worked) Abnormal if high-pressure switch 63H 3 Decreased airflow caused by worked ( w ) during compressor operation.
  • Page 31 Abnormal points and detection method Judgment and action Error Code Case Open/short circuit of discharge 1 Disconnection or contact 1 Check connection of connector (TH4) on the temperature thermistor (TH4) failure of connector (TH4) on outdoor controller circuit board. Check breaking of the lead wire for the outdoor controller circuit Abnormal if open (3: or less) or short thermistor (TH4).
  • Page 32 Abnormal points and detection method Judgment and action Error Code Case 1 Failure in the operation of 1 Check or replace the DC fan motor. Outdoor fan motor Abnormal if rotational frequency of the fan the DC fan motor 2 Failure in the outdoor circuit 2 Check the voltage of the outdoor circuit motor is not detected during DC fan motor operation.
  • Page 33 Abnormal points and detection method Judgment and action Error Code Case 1 Stop valve of outdoor unit is 1 Open stop valve. Compressor overcurrent interruption Abnormal if overcurrent DC bus or com- closed. 2 Decrease of power supply volt- 2 Check facility of power supply. pressor is detected after compressor starts operating for 30 seconds.
  • Page 34 Abnormal points and detection method Judgment and action Error Code Case Remote controller transmission error(E3)/signal receiving error(E5) 1 2 remote controllers are set as 1 Set a remote controller to main, and the 1 Abnormal if remote controller could not “main.”...
  • Page 35 Abnormal points and detection method Judgment and action Error Code Case 1 Slight temperature difference Pipe temperature Check pipe <liquid or condenser / <Cooling mode> between indoor room evaporator> temperature with room Detected as abnormal when the pipe tem- temperature and pipe <liquid temperature display on remote perature is not in the cooling range 3 min- or condenser / evaporator>...
  • Page 36 Error Code Abnormal points and detection method Case Judgment and action 1 Data of transmission proces- Communication error with communica- Turn off the power supply of outdoor unit, tion processor sor or unit processor is not indoor unit and FRESH MASTER or LOSS- Defective communication between unit transmitted normally because NAY at the same time for 2 minutes or more,...
  • Page 37 From the previous page. Error Code Abnormal points and detection method Case Judgment and action 1 During group operation with Same as mentioned in “A7” of the previous 4. If displayed address or attribute is remote controller, indoor unit detects indoor unit of multi- refrigerant page system, if indoor unit transmit...
  • Page 38 Error Code Abnormal points and detection method Case Judgment and action 1 Transmitting condition repeats 1 Check transmission wave form or noise on M-NET NO RESPONSE Abnormal if a message was transmitted fault because of noise and the transmission wire. like.
  • Page 39 Phenomena Factor Countermeasure 4. Even controlling by the wireless 1The pair number settings of the wireless remote 1Check the pair number settings. remote controller, no beep is heard controller and indoor controller board are mis- and the unit does not start operat- matched.
  • Page 40 Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller. Inspection method and Diagnosis flow Cause troubleshooting Check the display time of “PLEASE WAIT” after turning on the main power. 6 minutes 2 minutes or more or less How long is “PLEASE WAIT” •...
  • Page 41 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller 1 LED1 : LED2 : LED3 : Inspection method and Diagnosis flow Cause troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.
  • Page 42 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller 2 LED1 : LED2 : LED3 : Inspection method and Diagnosis flow Cause troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.
  • Page 43 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller 3 LED1 : LED2 : LED3 : — Inspection method and Diagnosis flow Cause troubleshooting Check the voltage of the terminal block (TB6) of the remote controller. DC 10V to DC 16V? •...
  • Page 44 • Before repair Frequent calling from customers Phone Calls From Customers How to Respond Note 1 The operating display of remote 1 Check if power is supplied to air conditioner. Unit does not operate controller does not come on. Nothing appears on the display unless power is at all.
  • Page 45 Phone Calls From Customers How to Respondm Note The room cannot be cooled or heated sufficiently. 1 Check the set temperature of remote controller. The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes. COOL: When the set temperature is lower than the room temperature.
  • Page 46 Phone Calls From Customers How to Respond Note 3 Air blows out for a while after Something 3 This is not a malfunction. However, this control is also is wrong HEAT operation is stopped. The blower is operating just for cooling down the applied to the models which with the heated-up air conditioner.
  • Page 47 Phone Calls From Customers How to Respond Note A white mist is expelled from the indoor unit. This is not a malfunction. This may occur when the operation gets started in the room of high humidity. Water or moisture is expelled from the outdoor Cooling;...
  • Page 48 11-6. HOW TO CHECK THE PARTS PUHZ-P100VHA2.UK PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA2 Parts name Check points Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. <Outdoor pipe> (At the ambient temperature 10:~30:) Thermistor (TH4) Normal Abnormal <Discharge> 160k"~410k"...
  • Page 49 Check method of DC fan motor (fan motor / outdoor controller circuit board) Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Give attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit board and fan motor.) Self check...
  • Page 50 11-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3) • Thermistor <Outdoor 2-phase pipe> (TH6) • Thermistor <Outdoor> (TH7) Thermistor R0 = 15k' ± 3% B constant = 3480 ± 2% =15exp{3480( 273+t – 273 )} 15k' 4.3k' 9.6k'...
  • Page 51 Linear expansion valve (1) Operation summary of the linear expansion valve • Linear expansion valve open/close through stepping motor after receiving the pulse signal from the outdoor controller board. • Valve position can be changed in proportion to the number of pulse signal. <Connection between the outdoor controller board and the linear expansion valve>...
  • Page 52 (3) How to attach and detach the coil of linear expansion valve <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Main body Stopper Coil Lead wire <How to detach the coil> Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward.
  • Page 53 11-8. EMERGENCY OPERATION (1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency opera- tion switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller board.
  • Page 54 (5) Operation data during emergency operation During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation are set to the following values: Operation mode Operation data Remarks COOL HEAT Intake temperature (TH1) 20.5: Indoor liquid pipe temperature (TH2) Indoor 2-phase pipe temperature (TH5)
  • Page 55 11-9. TEST POINT DIAGRAM <CAUTION> TEST POINT1 is high voltage. Outdoor controller circuit board PUHZ-P100VHA2.UK PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA2 CN51 CNDM 1 to 2: Input of low-level sound priority mode External signal output Forced defrost, • Compressor operating signal detect history...
  • Page 56 Outdoor noise filter circuit board PUHZ-P100VHA2.UK PUHZ-P125VHA2.UK PUHZ-P125VHA2 PUHZ-P140VHA2.UK PUHZ-P140VHA2 CN52C 52C driving signal (Connect to the outdoor controller circuit board (CN52C).) LO, NO Voltage of 220-240V AC is output (Connect to the outdoor CNAC1, CNAC2 power circuit board 220-240V AC...
  • Page 57 Outdoor power circuit board Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. PUHZ-P100VHA2.UK Measure the resistance in the following points (connectors, etc.). PUHZ-P125VHA2.UK If they are short-circuited, it means that they are broken.
  • Page 58 11-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches Type Action by the switch operation Function Effective timing Switch switch When compressor is working Compulsory defrosting w1 Start Normal in heating operation. w Abnormal history clear Clear Normal off or operating 1 2 3 4 5 6...
  • Page 59 (2) Function of connectors and switches Action by open/ short operation Connector Types Function Effective timing Switch Short Open Connector CN31 Emergency operation Start Normal When power supply ON SW6-1 MODEL SW5-6 SW6-2 SW6-3 100V 1 2 3 4 5 6 1 2 3 4 5 6 SW6-4 Model select...
  • Page 60 <Display function of inspection for outdoor unit> The blinking patterns of both LED1(green) and LED2(red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part ‘A-Control Service Tool (PAC-SK52ST)’ to connector CNM on outdoor controller board.
  • Page 61 Indication Error Outdoor controller board Error Detailed Contents Inspection method reference code LED1 (Green) LED2 (Red) page 1Check if stop valves are open. 3 blinking 1 blinking Abnormality of shell thermostat P.30 2Check if connectors (TH4, LEV-A) on outdoor controller board are not and discharging temperature (TH4) disconnected.
  • Page 62 <Outdoor unit operation monitor function> [When option part ‘A-Control Service Tool(PAC-SK52ST)’ is connected to outdoor controller board(CNM)] Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on ‘A-Control Service Tool’. Operation indicator SW2 : Indicator change of self diagnosis SW2 setting...
  • Page 63 SW2 setting Display detail Explanation for display Unit Pipe temperature / Liquid(TH3) – 40~90 – 40~90 (When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.) (Example) When -10:; 2 3 4 5 6 0.5 secs. 0.5secs.
  • Page 64 SW2 setting Display detail Explanation for display Unit Pipe temperature / Liquid(TH3) on error – 40~90 occurring (When the coil thermistor detects 0: or below, “–” – 40~90 and temperature are displayed by turns.) (Example) When –15:; 0.5 secs. 0.5secs. 2 secs.
  • Page 65 SW2 setting Display detail Explanation for display Unit The number of connected indoor units (The number of connected indoor units are dis- played.) Unit 2 3 4 5 6 Capacity setting display Displayed as an outdoor capacity code. Capacity Code Code P100V display...
  • Page 66 SW2 setting Display detail Explanation for display Unit Indoor setting temperature 17~30 17~30 2 3 4 5 6 Outdoor pipe temperature / Cond./ -39~88 Eva. (TH6) (When the temperature is 0: or less, “–” and -39~88 temperature are displayed by turns.) 2 3 4 5 6 Outdoor outside temperature (TH7) -39~88...
  • Page 67 SW2 setting Display detail Explanation for display Unit 0~100 Capacity save (When the capacity is 100% hundreds digit, tens digit 0~100 and ones digit are displayed by turns.) When air conditioner is connected to (Example) When 100%; M-NET and capacity save mode is 0.5 secs.
  • Page 68 SW2 setting Display detail Explanation for display Unit 0~480 LEV-A opening pulse on error occurring (When it is 100 pulse or more, hundreds digit, tens 0~480 digit and ones digit are displayed by turns.) (Example) When 130 pulse; Pulse 0.5 secs. 0.5secs.
  • Page 69 SW2 setting Display detail Explanation for display Unit 0~255 Discharge super heat on error occurring (When the temperature is 100°C or more, hundreds 0~255 digit, tens digit and ones digit are displayed by turns.) (Example) When 150°C; Cooling = TH4-TH6 Heating = TH4-TH5 0.5 secs.

  • Page 70: Function Setting

    FUNCTION SETTING 12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1. (1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number.) W1 The functions below are available only when the wired remote controller is used.
  • Page 71 (2) Functions available when setting the unit number to 01-03 or AL (07 in case of wireless remote controller) • When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the indoor unit number of Operating Prodedure.
  • Page 72 12-1-1. Selecting functions using the wired remote controller First, try to familiarize yourself with the flow of the function selection procedure. In this section, an example of setting the room temperature detection position is given. For actual operations, refer to steps 1 to 0 . Setting number Refrigerant address Unit number...
  • Page 73 [Operating Procedure] 1 Check the setting items provided by function selection. If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps 2 to 7 , fill in the "Check" column in Table 1, and then change them as necessary. For initial settings, refer to the indoor unit's installation manual. 2 Switch off the remote controller.
  • Page 74 12-1-2. Selecting functions using the wireless remote controller (Type C) Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refriger- ant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller. [Flow of function selection procedure] The flow of the function selection procedure is shown below.
  • Page 75 12-2. FUNCTION SELECTION OF REMOTE CONTROLLER The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed. Item 1 Item 2 Item 3 (Setting content) 1.Change Language Language setting to display •...
  • Page 76 [Function selection flowchart] Normal display (Display when the air conditioner is not running) Setting language (English) Hold down the button and press the button for 2 seconds. Hold down the button and press the button for 2 seconds. Press the operation mode button. Press theTIMER MENU button.

  • Page 77: Easy Maintenance Function

    EASY MAINTENANCE FUNCTION Reduces maintenance work drastically. Enables you to check operation data of the indoor and outdoor units by remote controller. Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even for inverter models. Smooth Mainte- Discharge temperature 64: Conventional inspection work...
  • Page 78 Data measurement When the operation is stabilized, measure operation data as explained below. (4) Press the [TEMP] buttons ( ) to select the desired refrigerant address. [Screen (5) Select the type of data to be displayed. After selecting, go to step (6). Compressor information button MENU...
  • Page 79 12-2.GUIDE FOR OPERATION CONDITION Inspection item Result Check Points Breaker Good Retightened Enter the temperature differences between into Terminal block Outdoor Unit Good Retightened the graph given below. Indoor Unit Good Retightened Operation state is determined according to the plotted areas on (Insulation resistance) M"...

  • Page 80: Monitoring The Operation Databythe Remote Controller

    MONITORING THE OPERATION DATABYTHE REMOTE CONTROLLER 14-1. HOW TO "MONITOR THE OPERATION DATA" • Turn on the [Monitoring the operation data] Example) Request code "004" Discharge temperature 69 ; Refrigerant address "00" B: Refrigerant address C: Data display area D: Request code display area (1) Press the button for 3 seconds so that [ Maintenance mode] appears on the screen (at TEST...
  • Page 81 14-2. REQUEST CODE LIST * Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Description Request content Unit Remarks (Display range) Operation state Refer to 14-2-1. Detail Contents in Request Code. – Compressor-Operating current (rms) 0 –...
  • Page 82 Description Request content Unit Remarks (Display range) Indoor unit-Control state – Refer to 14-2-1.Detail Contents in Request Code. Outdoor unit-Control state – Refer to 14-2-1.Detail Contents in Request Code. Refer to 14-2-1.Detail Contents in Request Code. Compressor-Frequency control state – Outdoor unit-Fan control state Refer to 14-2-1.Detail Contents in Request Code.
  • Page 83 Description Request content Unit Remarks (Display range) Error history 1 (latest) Displays error history. (" - - " is displayed if no history is present.) Code Error history 2 (second to last) Displays error history. (" - - " is displayed if no history is present.) Code Error history 3 (third to last) Displays error history.
  • Page 84 Description Request content Unit Remarks (Display range) Indoor-Fan operating time 0 – 9999 1 hour (After filter is reset) Indoor-Total operating time 0 – 9999 10 hours (Fan motor ON time) Indoor fan output value (Sj value) 0 – 255 Fan control data –...
  • Page 85 14-2-1. Detail Contents in Request Code Example) Request code "004" Discharge temperature 69 : Refrigerant address "00" B: Refrigerant address C: Data display area D: Request code display area [Operation state] (Request code ": 0 ") Relay output state Power currently Data display Display Compressor...
  • Page 86 [Fan control state] (Request code :" 53 ") Data display Fan step correction value by heatsink temperature overheat prevention control Fan step correction value by cool condensation temperature overheat prevention control Display Correction value - (minus) – 1 [Actuator output state] (Request code :"54") Data display Actuator output state 1 Actuator output state 2...
  • Page 87 [Contact demand capacity] (Request code "61") Setting content Data display Setting Display Setting value Setting content SW7-1 SW7-2 100% [External input state] (Request code "62") Input state : Input present Data display Contact demand Silent mode Spare 1 Spare 2 Display Input state input...
  • Page 88 [Outdoor unit switch setting display (SW1 to SW10, except SW3)] Request codes: 73 to 82 0: Swich OFF 1: Swich ON 0: Swich OFF 1: Swich ON SW1, SW2, SW6, SW7 Data display Data display 00 00 00 00 00 01 00 01 00 02 00 02...
  • Page 89 [Indoor unit – Model setting information] (Request code : 162) Data display Display Model setting state Display Model setting state PSA-RP•GA, PSH-PGAH PKA-RP•FAL, PKH-P•FALH See the table on the right. PEAD-RP•EA(2)/GA, PEHD-P•EAH PCA-RP•GA, PCH-P•GAH, PLA-RP•BA SEZ-KA•VA SLZ-KA•VA(L) PCA-RP•HA PKA-RP•GAL, PKH-P•GALH PLA-RP•...

  • Page 90: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUHZ-P100VHA2.UK OPERATING PROCEDURE PHOTOS & ILLUSTRATION Top panel fixing screws 1. Removing the service panel and top panel Figure 1 Top panel (1) Remove 3 service panel fixing screws (5 10) and slide the hook on the right downward to remove the service panel.
  • Page 91 OPERATING PROCEDURE PHOTOS Thermistor 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) Photo 4 <Outdoor 2-phase pipe> (1) Remove the service panel. (See figure 1.) (TH6) (2) Remove the top panel. (See figure 1.) (3) Disconnect the connectors, TH6 and TH7 (red), on the controller circuit board in the electrical parts box.
  • Page 92 OPERATING PROCEDURE PHOTOS Photo 7 7. Removing the 4-way valve (21S4), LEV coil (LEV(A)) 4-way valve (1) Remove the service panel. (See figure 1.) LEV coil (LEV A) fixing screw (2) Remove the top panel. (See figure 1.) (3) Remove the electrical parts box. (See photo 3.) [Removing the 4-way valve] (4) Remove the 4-way valve fixing screw (M4 (5) Remove the 4-way valve by sliding the coil toward you.
  • Page 93 OPERATING PROCEDURE PHOTOS 10. Removing the high pressure switch (63H) Photo 9 (1) Remove the service panel. (See figure 1.) Lead wire of (2) Remove the top panel. (See figure 1.) high pressure switch (3) Remove the electrical parts box. (See photo 3.) (4) Remove 3 right side panel fixing screws (5 10) in the rear of the unit and remove the right side panel.
  • Page 94 OPERATING PROCEDURE PHOTOS 12. Removing the compressor (MC) Photo 11 (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 2 front cover panel fixing screws (5 10) and Terminal cover Inlet remove the front cover panel.
  • Page 95 PUHZ-P125VHA2.UK PUHZ-P140VHA2.UK PUHZ-P125VHA2 .UK PUHZ-P140VHA2 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 1. Removing the service panel and top panel Top panel fixing screws Top panel Figure 1 (1) Remove 3 service panel fixing screws (5 10) and slide the hook on the right downward to remove the service Service panel panel.
  • Page 96 OPERATING PROCEDURE PHOTOS Thermistor 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) Photo 4 <Outdoor 2-phase pipe> (1) Remove the service panel. (See figure 1.) (TH6) (2) Remove the top panel. (See figure 1.) (3) Disconnect the connectors, TH6 and TH7 (red), on the controller circuit board in the electrical parts box.
  • Page 97 OPERATING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), and LEV coil Photo 7 (LEV(A)) (1) Remove the service panel. (See figure 1.) LEV coil (LEV A) (2) Remove the top panel. (See figure 1.) [Removing the 4-way valve coil] Lead wire of high Thermistor (3) Remove 4-way valve solenoid coil fixing screw...
  • Page 98 OPERATING PROCEDURE PHOTOS 10. Removing bypass valve coil (SV) and bypass valve Photo 8 (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 3 right side panel fixing screws (5 10) in the rear of the unit and remove the right side panel.
  • Page 99 OPERATING PROCEDURE PHOTOS 13. Removing the motor for compressor (MC) Photo 10 (1) Remove the service panel. (See figure 1.) Accumulator (2) Remove the top panel. (See figure 1.) (3) Remove 2 front cover panel fixing screws (5 10) and remove the front cover panel.
  • Page 100 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Feb. 2008 No.OCH415 REVISED EDITION-A PDF 7 New publication, effective Feb. 2008 Distributed in Apr. 2007 No.OCH415 PDF 7 Specifications subject to change without notice...

This manual is also suitable for:

Puhz-p100vha2.ukPuhz-p125vha2Puhz-p125vha2.ukPuhz-p125vha21.ukPuhz-p140vha2Puhz-p140vha2.uk ... Show all

Table of Contents