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Mitsubishi Electric Mr.SLIM PU-P71VHA Service Manual

Split-type, heat pump air conditioners.
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SPLIT-TYPE, AIR CONDITIONERS

SERVICE MANUAL

Outdoor unit
[Model names]
PU-P71VHA
PU-P71YHA
PU-P100VHA
PU-P100YHA
PU-P125YHA
PU-P140YHA
[Service Ref.]
Service Ref. is on page 2.
PU(H)-P71VHA
.UK
(1)
PU(H)-P71YHA
.UK
(1)
PU(H)-P100VHA
.UK
(1)
PU(H)-P100YHA
.UK
(1)
R410A
PUH-P71VHA
PUH-P71YHA
PUH-P100VHA
PUH-P100YHA
PUH-P125YHA
PUH-P140YHA
PU(H)-P71VHA#2.UK
PU(H)-P71YHA#2.UK
PU(H)-P100VHA#2.UK
PU(H)-P100YHA#2.UK
REVISED EDITION-F
Revision:
• PU(H)-P125/140YHAR4.UK
have been added in
REVISED EDITION-F.
• Some descriptions have
been modified.
• Please void OC379
REVISED EDITION-E.
Note:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products
have <G> mark on the spec
nameplate.
• For servicing of RoHS com-
pliant products, refer to the
RoHS Parts List.
CONTENTS
1. TECHNICAL CHANGES ................................. 3
2. REFERENCE MANUAL .................................. 4
3. SAFETY PRECAUTION .................................. 5
4. FEATURES ...................................................... 8
5. SPECIFICATIONS ........................................... 9
6. DATA ............................................................. 11
7. OUTLINES AND DIMENSIONS .................... 15
8. WIRING DIAGRAM ....................................... 19
9. WIRING SPECIFICATIONS .......................... 23
10. REFRIGERANT SYSTEM DIAGRAM ............... 28
11. TROUBLESHOOTING ................................... 30
12. FUNCTION SETTING .................................... 66
13. DISASSEMBLY PROCEDURE ..................... 73
14. PARTS LIST .................................................. 82
15. RoHS PARTS LIST ....................................... 88
April 2012
No.OC379

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   Summary of Contents for Mitsubishi Electric Mr.SLIM PU-P71VHA

  • Page 1: Service Manual

    SPLIT-TYPE, AIR CONDITIONERS April 2012 No.OC379 REVISED EDITION-F SERVICE MANUAL R410A Outdoor unit Revision: [Model names] • PU(H)-P125/140YHAR4.UK have been added in PU-P71VHA PUH-P71VHA REVISED EDITION-F. • Some descriptions have PU-P71YHA PUH-P71YHA been modified. PU-P100VHA PUH-P100VHA • Please void OC379 REVISED EDITION-E.
  • Page 2 Service Ref.] PU-P71VHA.UK PU-P100VHA.UK PU-P125YHA.UK PU-P140YHA.UK PU-P71VHA PU-P100VHA PU-P125YHA PU-P140YHA PU-P71VHA#2.UK PU-P100VHA#2.UK PU-P125YHA#2.UK PU-P140YHA#2.UK PU-P71VHAR3.UK PU-P100VHAR3.UK PU-P125YHAR3.UK PU-P140YHAR3.UK PU-P71YHA.UK PU-P100YHA.UK PU-P125YHAR4.UK PU-P140YHAR4.UK PU-P71YHA PU-P100YHA PU-P71YHA#2.UK PU-P100YHA#2.UK PU-P71YHAR3.UK PU-P100YHAR3.UK PUH-P71VHA.UK PUH-P100VHA.UK PUH-P125YHA.UK PUH-P140YHA.UK PUH-P71VHA PUH-P100VHA PUH-P125YHA PUH-P140YHA PUH-P71VHA#2.UK PUH-P100VHA#2.UK PUH-P125YHA#2.UK PUH-P140YHA#2.UK PUH-P71VHAR3.UK...
  • Page 3: Technical Changes

    TECHNICAL CHANGES PU-P125YHAR3.UK PU-P125YHAR4.UK PU-P140YHAR3.UK PU-P140YHAR4.UK PUH-P125YHAR3.UK PUH-P125YHAR4.UK PUH-P140YHAR3.UK PUH-P140YHAR4.UK • Thermistor has been changed. (Discharge temp. thermistor → Compressor surface temp. thermistor (Protector of compressor)) PU-P71VHA#2.UK PU-P71VHAR3.UK PU-P71YHA#2.UK PU-P71YHAR3.UK PU-P100VHA#2.UK PU-P100VHAR3.UK PU-P100YHA#2.UK PU-P100YHAR3.UK PU-P125YHA#2.UK PU-P125YHAR3.UK PU-P140YHA#2.UK PU-P140YHAR3.UK PUH-P71VHA#2.UK PUH-P71VHAR3.UK PUH-P71YHA#2.UK...
  • Page 4: Reference Manual

    REFERENCE MANUAL 2-1. INDOOR UNIT’S SERVICE MANUAL Service Model name Service Ref. Manual No. PLA-RP35/50/60/71AA PLA-RP35/50/60/71AA.UK OC335 PLA-RP35/50/60/71/100/125/140BA PLA-RP35/50/60/71/100/125/140BA(#2).UK OCH412 PLA-RP35/50/60/71BA OCB412 PLA-RP71/100/125/140BA2.UK PLA-RP100/125/140AA2 PLA-RP100/125/140AA2.UK OC357 PCA-RP50/60/71/100/125/140GA PCA-RP50/60/71/100/125/140GA(#1) OC328 PCA-RP50GA2(#1) PCA-RP50GA2 PEAD-RP50/60/71/125/140EA PEAD-RP50/60/71/125/140EA(#1).UK HWE0521 PEAD-RP35/100EA2 PEAD-RP35/100EA2(#1).UK PEAD-RP60/71/100GA PEAD-RP60/71/100GA(#1).UK HWE0506 PKA-RP35/50HAL PKA-RP35/50HAL OCH453 OCB453...
  • Page 5: Safety Precaution

    SAFETY PRECAUTION 3-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must disconnected. 3-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use a vacuum pump with a reverse flow check Use new refrigerant pipes. valve.
  • Page 6 [1] Cautions for service (1) Perform service after collecting the refrigerant left in unit completely. (2) Do not release refrigerant in the air. (3) After completing service, charge the cycle with specified amount of refrigerant. (4) When performing service, install a filter drier simultaneously. Be sure to use a filter drier for new refrigerant.
  • Page 7 2Dimensions of flare cutting and flare nut The component molecules in HFC refrigerant are smaller compared to conventional refrigerants. In addition to that, R410A is a refrigerant, which has higher risk of leakage because of its working pressure higher than that of other refriger- ants.
  • Page 8: Features

    FEATURES PU(H)-P125YHA PU(H)-P71VHA PU(H)-P71VHA#2.UK PU(H)-P140YHA PU(H)-P71YHA PU(H)-P71YHA#2.UK PU(H)-P125YHA#2.UK PU(H)-P100VHA PU(H)-P100VHA#2.UK PU(H)-P140YHA#2.UK PU(H)-P100YHA PU(H)-P100YHA#2.UK PU(H)-P71VHAR3.UK PU(H)-P125YHAR3.UK PU(H)-P71YHAR3.UK PU(H)-P140YHAR3.UK PU(H)-P100VHAR3.UK PU(H)-P125YHAR4.UK PU(H)-P100YHAR3.UK PU(H)-P140YHAR4.UK CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (Max.30m) The refrigerant circuit with LEV (Linear Expansion Valve) and accumulator always control the optimal refrigerant level regardless of the length (30m max.
  • Page 9: Specifications

    SPECIFICATIONS PUH-P71VHA/YHA.UK PUH-P100VHA/YHA.UK PUH-P71VHA/YHA PUH-P100VHA/YHA Service Ref. PUH-P71VHA/YHA#2.UK PUH-P100VHA/YHA#2.UK PUH-P71VHA/YHAR3.UK PUH-P100VHA/YHAR3.UK Cooling Heating Cooling Heating Mode Power supply (phase, cycle, voltage) Single, 50Hz, 230V/ 3Phase, 50Hz, 400V(4wires) Running current 12.03/4.29 11.98/4.28 15.07/5.39 14.48/5.18 Max. current 23.5/7.8 28.5/9.4 Protection current 25.5/9.4 30.5/11.3 Munsell 5Y 7/1 / Munsell 3Y 7.8/1.1 (V/YHAR3) External finish...
  • Page 10 PU-P71VHA/YHA.UK PU-P100VHA/YHA.UK PU-P71VHA/YHA PU-P100VHA/YHA Service Ref. PU-P71VHA/YHA#2.UK PU-P100VHA/YHA#2.UK PU-P71VHA/YHAR3.UK PU-P100VHA/YHAR3.UK Mode Cooling Cooling Power supply (phase, cycle, voltage) Single, 50Hz, 230V / 3Phase, 50Hz, 400V(4wires) Running current 12.03/4.29 15.07/5.18 Max. current 23.5/7.8 28.5/9.4 Protection curent 25.5/9.4 30.5/11.3 External finish Munsell 5Y 7/1 / Munsell 3Y 7.8/1.1(V/YHAR3)
  • Page 11: Data.

    DATA 6-1. REFILLING REFRIGERANT CHARGE (R410A : kg) Piping length (one way) Factory Service Ref. charged PU(H)-P71VHA/YHA.UK PU(H)-P71VHA/YHA PU(H)-P71VHA/YHA#2.UK PU(H)-P71VHA/YHAR3.UK PU(H)-P100VHA/YHA.UK PU(H)-P100VHA/YHA PU(H)-P100VHA/YHA#2.UK PU(H)-P100VHA/YHAR3.UK PU(H)-P125/140YHA.UK PU(H)-P125/140YHA PU(H)-P125/140YHA#2.UK PU(H)-P125/140YHAR3.UK PU(H)-P125/140YHAR4.UK Additional charge is required for using pipes longer than 30 m. 6-2.
  • Page 12: Noise Criterion Curves

    6-3. NOISE CRITERION CURVES PU(H)-P71VHA.UK PU(H)-P71YHA.UK PU(H)-P100VHA.UK PU(H)-P100YHA.UK PU(H)-P71VHA PU(H)-P71YHA PU(H)-P100VHA PU(H)-P100YHA PU(H)-P71VHA#2.UK PU(H)-P71YHA#2.UK PU(H)-P100VHA#2.UK PU(H)-P100YHA#2.UK PU(H)-P71VHAR3.UK PU(H)-P71YHAR3.UK PU(H)-P100VHAR3.UK PU(H)-P100YHAR3.UK SPL(dB) MODE LINE SPL(dB) MODE LINE COOLING COOLING HEATING HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE THRESHOLD OF...
  • Page 13 6-4. STANDARD OPERATION DATA Representative matching PLA-RP71AA PLA-RP100AA2 PLA-RP125AA2 PLA-RP140AA2 Mode Cooling Heating Cooling Heating Cooling Heating Cooling Heating Capacity 8,000 9,000 10,000 11,500 12,300 14,300 14,200 17,000 Input 2.83 2.82 3.53 3.40 4.36 4.23 5.41 5.35 Indoor unit PLA-RP71AA PLA-RP100AA2 PLA-RP125AA2 PLA-RP140AA2...
  • Page 14 1 , 50 1 , 50 1 , 50 1 , 50 Phase , Hz Volts 0.92 0.92 0.92 0.79 Amperes PU-P71VHA PU-P100VHA PU-P125YHA PU-P140YHA Outdoor unit PU-P71YHA PU-P100YHA 1/3 , 50 3 , 50 3 , 50 1/3 , 50...
  • Page 15: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PU(H)-P71VHA.UK PU(H)-P71VHA#2.UK Unit : mm PU(H)-P71YHA.UK PU(H)-P71YHA#2.UK PU(H)-P100VHA.UK PU(H)-P100VHA#2.UK PU(H)-P100YHA.UK PU(H)-P100YHA#2.UK PU(H)-P71VHA PU(H)-P71YHA PU(H)-P100VHA PU(H)-P100YHA OC379F...
  • Page 16 PU-P125YHA.UK PUH-P125YHA.UK Unit : mm PU-P140YHA.UK PUH-P140YHA.UK PU-P125YHA .UK PUH-P125YHA PU-P140YHA .UK PUH-P140YHA PU-P125YHA#2.UK PUH-P125YHA#2.UK PU-P140YHA#2.UK PUH-P140YHA#2.UK OC379F...
  • Page 17 Unit : mm PU-P71VHAR3.UK PUH-P71VHAR3.UK PU-P71YHAR3.UK PUH-P71YHAR3.UK PU-P100VHAR3.UK PUH-P100VHAR3.UK PU-P100YHAR3.UK PUH-P100YHAR3.UK OC379F...
  • Page 18 Unit : mm PU-P125YHAR3.UK PUH-P125YHAR3.UK PU-P140YHAR3.UK PUH-P140YHAR3.UK PU-P125YHAR4.UK PUH-P125YHAR4.UK PU-P140YHAR4.UK PUH-P140YHAR4.UK OC379F...
  • Page 19: Wiring Diagram

    WIRING DIAGRAM PU-P71VHA.UK PUH-P71VHA.UK PU-P100VHA.UK PUH-P100VHA.UK PU-P71VHA PUH-P71VHA PU-P100VHA PUH-P100VHA SYMBOL SYMBOL NAME NAME FUSE1(O.B) COMPRESSOR(INNER THERMOSTAT) FUSE (6.3A 250V) FAN MOTOR(INNER THERMOSTAT) FUSE2(O.B) FUSE (6.3A 250V) THERMISTOR LIQUID TEMP FUSE3(O.B) FUSE (6.3A 250V) DISCHARGE TEMP FUSE4(O.B) FUSE (6.3A 250V) COND./EVA.TEMP...
  • Page 20 PU-P71VHA#2.UK PUH-P71VHA#2.UK PU-P100VHA#2.UK PUH-P100VHA#2.UK PU-P71VHAR3.UK PUH-P71VHAR3.UK PU-P100VHAR3.UK PUH-P100VHAR3.UK SYMBOL NAME SYMBOL NAME COMPRESSOR (INNER THERMOSTAT) OUTDOOR CONTROLLER BOARD FUSE1 (O.B) FUSE (6.3A 250V) FAN MOTOR (INNER THERMOSTAT) LIQUID TEMP FUSE2 (O.B) FUSE (6.3A 250V) THERMISTOR DISCHARGE TEMP FUSE3 (O.B) FUSE (6.3A 250V) 2-PHASE PIPE TEMP FUSE4 (O.B)
  • Page 21 PU-P71YHA PU-P100YHA PU-P125YHA PU-P140YHA PUH-P71YHA PUH-P100YHA PUH-P125YHA PUH-P140YHA SYMBOL NAME SYMBOL NAME COMPRESSOR FUSE1(O.B) FUSE (6.3A 250V) FAN MOTOR(INNER THERMOSTAT) FUSE2(O.B) FUSE (6.3A 250V) THERMISTOR LIQUID TEMP FUSE3(O.B) FUSE (6.3A 250V) FUSE4(O.B) DISCHARGE TEMP FUSE (6.3A 250V) COND./EVA.TEMP (O.B) MC/CH RELAY MF CAPACITOR (O.B) 21S4 RELAY...
  • Page 22 PU-P71YHA#2.UK PU-P100YHA#2.UK PU-P125YHA#2.UK PU-P140YHA#2.UK PUH-P71YHA#2.UK PUH-P100YHA#2.UK PUH-P125YHA#2.UK PUH-P140YHA#2.UK PU-P71YHAR3.UK PU-P100YHAR3.UK PU-P125YHAR3.UK PU-P140YHAR3.UK PUH-P71YHAR3.UK PUH-P100YHAR3.UK PUH-P125YHAR3.UK PUH-P140YHAR3.UK PU-P125YHAR4.UK PU-P140YHAR4.UK PUH-P125YHAR4.UK PUH-P140YHAR4.UK SYMBOL NAME SYMBOL NAME MOTOR FOR COMPRESSOR OUTDOOR CONTROLLER BOARD MF3,MF4 FAN MOTOR (INNER THERMOSTAT) FUSE1 – 4 (O.B) FUSE (6.3A/250V) C3,C4 CAPACITOR (MF3, MF4) X51 (O.B)
  • Page 23: Wiring Specifications

    WIRING SPECIFICATIONS 9-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model P71V P100V P71Y P100Y P125Y P140Y ~/N (single), 50 Hz, 230 V 3N~(3phase), 50 Hz, 400 V Outdoor unit Power supply Outdoor unit input capacity 32 A 16 A 25 A Main switch (Breaker) Max.
  • Page 24: Separate Indoor Unit/ Outdoor Unit Power Supplies

    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 <For models without heater> Outdoor unit power supply * The optional indoor power supply terminal kit is required. Earth leakage breaker Wiring circuit breaker or isolating switch Outdoor unit...
  • Page 25 9-3. INDOOR – OUTDOOR CONNECTING CABLE The cable shall not be lighter than design 60245 IEC or 227 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 26 9-4. M-NET WIRING METHOD (Points to note) (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 27 M-NET wiring M-NET terminal (1) Use 2-core × 1.25mm² shield wire for electric wires. Earth block wire (Excluding the case connecting to system controller.) (2) Connect the wire to the M-NET terminal block.Connect one core of the transmission wire (non-polar) to A terminal and the other to B. Peel the Transmission Shield shield wire, twist the shield part to a string and connect it to S terminal.
  • Page 28: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PUH-P71VHA PU-P71VHA PUH-P71YHA PU-P71YHA PUH-P71VHA#2.UK PU-P71VHA#2.UK PUH-P71YHA#2.UK PU-P71YHA#2.UK PUH-P71VHAR3.UK PU-P71VHAR3.UK PUH-P71YHAR3.UK PU-P71YHAR3.UK PUH-P100VHA PU-P100VHA PUH-P100YHA PU-P100YHA PUH-P100VHA#2.UK PU-P100VHA#2.UK PUH-P100YHA#2.UK PU-P100YHA#2.UK PUH-P100VHAR3.UK PU-P100VHAR3.UK PUH-P100YHAR3.UK PU-P100YHAR3.UK Unit : mm Service port (check) High pressure Ball valve protect switch Outdoor heat exchanger...
  • Page 29 PUH-P125YHAR4.UK PU-P125YHAR4.UK PUH-P140YHAR4.UK PU-P140YHAR4.UK Unit : mm Bypass valve High pressure protect switch Ball valve Thermistor (TH6) Service port (check) 4-way valve (#50) Strainer Refrigerant GAS pipe 15.88 ( 5/8") Distributor Muffler Service port Strainer Thermistor (TH3) (check) (#100) Capillary tube Thermistor (TH4) ( 4.0...
  • Page 30: 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 inferior phenomenon is reoccurring at service, are sum- marized in the table below.
  • Page 31: Operating Procedures

    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 altemately. Wait until “PLEASE WAIT” disappears before using remote controller. 1. Turn on the main power supply. “PLEASE WAIT”...
  • Page 32: Initial Setting

    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 33: How To Proceed "self-diagnosis

    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 34: Remote Controller Diagnosis

    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 35 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 36 • 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 37: Self-diagnosis Action Table

    11-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is turned on> (Note 1) The number in ( ) is the error cord of upper remote controller (M-NET) Error Code Meaning of error code and detection method Case Judgment and action 1 Check following items.
  • Page 38 Case Error Code Meaning of error code and detection method Judgment and action Indoor/outdoor unit connector mis- 1 Contact failure or mis-wiring of 1 Check disconnection or looseness or polarity wiring, excessive number of units (5 of indoor/outdoor unit connecting wire of indoor/outdoor unit connecting wire.
  • Page 39 Case Error Code Meaning of error code and detection method Judgment and action 1 Short cycle of indoor unit 1-6 Check indoor unit and repair defectives. Abnormal high pressure (High-pressure 2 Clogged filter of indoor unit 7 Check full open stop valve. switch 63H operated) 3 Decreased airflow caused by 8 Check piping and repair defectives.
  • Page 40 Case Error Code Meaning of error code and detection method Judgment and action 1 Disconnection or contact fail- 1 Check contact of connector (TH4) on the Open/short circuit of discharging (compressor surface) thermistor (TH4) ure of connector (TH4) on the indoor controller board.
  • Page 41 Note: E1, E2 and E4 to E7, refer to indoor unit service manual. Case Error Code Meaning of error code and detection method Judgment and action Compressor over current (start-up 1 Abnormal compressor 1 Check compressor. 2 Clogged indoor filter locked) breaking Refer to 6-2.
  • Page 42 Case Error Code Meaning of error code and detection method Judgment and action 12 Turn the power off, and on again to check. 1 Noise has entered transmis- Not defined error code Replace indoor controller board or outdoor This code is displayed when not defined sion wire of remote controller.
  • Page 43 Error Code Meaning of error code and detection method Case Judgment and action NO ACK Common factor that has no rela- Always try the followings when the error tion with abnormality source. 1. Transmitting side controller detects “A7” occurs. 1 The unit of former address abnormal if a message was transmitted does not exist as address 1 Turn off the power supply of outdoor unit,...
  • Page 44 From the previous page. Error Code Meaning of error code and detection method Case Judgment and action 5. If displayed address or attribute is 1 During sequential operation Same as mentioned in “A7” of the previous of indoor unit and FRESH page FRESH MASTER, MASTER of other refrigerant...
  • Page 45: Troubleshooting Of Problems

    11-5. TROUBLESHOOTING OF PROBLEMS Phenomena Factor Countermeasure (1) Remote controller display does not Reference (Meaning of the indoor control board LED) work. (Electric current marker “ ” is not LED1 : Microprocessor power supply displayed on the remote controller.) ..Display of DC14V is supply or not from indoor power. LED2 : Power output supplied to remote controller ..Displays the power condition supplied to wired remote controller.
  • Page 46 Phenomena Factor Countermeasure 1 When the unit is as follows in the HEAT mode, the 1 Normal operation (6) Upward/downward vane perform- 2 Normal operation vane is not downward. ance fault (Working of COOL protection function) 3 A) Vane motor resistance value check •...
  • Page 47 [for wired remote controller] Check the following table to see whether there is a simple solution to your problem. Problem Solution Problem Solution The room neither gets cool nor Clean the filter. (Dust and debris A ticking noise is heard from This sound is made when internal warm very much.
  • Page 48 Problem Solution Problem Solution The unit started even though Is this timer on? "DEFROST" is displayed (no Frost adheres to the outdoor unit the start/stop button was not Press the start/stop button to stop air comes out the unit). when the outside air temperature pushed.
  • Page 49 [for wireless remote controller] Check the following table to see whether there is a simple solution to your problem. Problem Display reading Cause Solution Unit does not operate at all. When POWER ON/OFF button Main power switch is turned off. Turn main power on.
  • Page 50: Table Of Contents

    11-6. HOW TO CHECK THE PARTS PU(H)-P71VHA PU(H)-P100VHA PU(H)-P71YHA PU(H)-P100YHA PU(H)-P125YHA PU(H)-P140YHA PU(H)-P71VHA#2.UK PU(H)-P100VHA#2.UK PU(H)-P71YHA#2.UK PU(H)-P100YHA#2.UK PU(H)-P125YHA#2.UK PU(H)-P140YHA#2.UK PU(H)-P71VHAR3.UK PU(H)-P100VHAR3.UK PU(H)-P71YHAR3.UK PU(H)-P100YHAR3.UK PU(H)-P125YHAR3.UK PU(H)-P140YHAR3.UK PU(H)-P125YHAR4.UK PU(H)-P140YHAR4.UK Parts name Check points Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. (Surrounding temperature 10 ~30 ) <Outdoor pipe>...
  • Page 51 11-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3) • Thermistor <Outdoor 2-phase pipe> (TH6) Thermistor R0 = 15k' ± 3% B constant = 3480 ± 2% =15exp{3480( 273+t – 273 )} 15k' 4.3k' 9.6k'...
  • Page 52: Open:135

    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 53 (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 54 11-8. TEST POINT DIAGRAM Outdoor controller board PU(H)-P71VHA PU(H)-P100VHA PU(H)-P71YHA PU(H)-P100YHA PUH-P125YHA PUH-P140YHA PU-P125YHA PU-P140YHA PU(H)-P71VHA#2.UK PU(H)-P100VHA#2.UK PU(H)-P71YHA#2.UK PU(H)-P100YHA#2.UK PUH-P125YHA#2.UK PUH-P140YHA#2.UK PU-P125YHA#2.UK PU-P140YHA#2.UK PU(H)-P71VHAR3.UK PU(H)-P100VHAR3.UK PU(H)-P71YHAR3.UK PU(H)-P100YHAR3.UK PUH-P125YHAR3.UK PUH-P140YHAR3.UK PU-P125YHAR3.UK PU-P140YHAR3.UK PUH-P125YHAR4.UK PUH-P140YHAR4.UK PU-P125YHAR4.UK PU-P140YHAR4.UK When connecting A-control MF4, MF3 Service Tool [ PAC-SK52ST ], Connect to fan motor Between 1 and 3...
  • Page 55: Emergency Operation

    11-9. EMERGENCY OPERATION 1. When the outdoor unit becomes under mentioned inspection display. Also when the wired remote controller or microproces- sor in the indoor unit is broken. If there is not any wrong section, short-circuited connector (CN31) in the outdoor controller board is possible to emergency operation.
  • Page 56: Normal

    11-10. FUNCTION OF SWITCHS, CONNECTORS AND JUMPERS Function of switches Switch Action by the switch operation Function Effective timing Signal Compulsory defrosting Start Normal Heat compressor operating Abnormal history clear Clear Normal off or operating 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6...
  • Page 57: Normal

    Jumper connector function table Switch Action by the switch operation Effective timing Function Signal (With jumper wire) (Without jumper wire) Switch of single phase and 3 phase Single phase When power supply ON 3 phase power supply Switch of cooling only/ When power supply ON Cooling only Heat pump...
  • Page 58 Outdoor unit operation monitor function Operation indicator SW2 : Indicator change of self diagnosis Explanation for display Unit SW2 setting Display detail Code indication 2 3 4 5 6 <Digital indicator LED1 working details> · Lighting (Normal operation) : Indicating the operation mode. (Be sure the 1 to 6 in the SW2 are set to OFF) (Initial setting) (1) Display when the power supply ON.
  • Page 59 SW2 setting Display detail Explanation for display Unit Piping temperature (TH3) – 40~90 – 40~90 (When the coil thermistor is 0:or below, “–” and temperature displays by turns.) (Example) When -10: One second interval 2 3 4 5 6 – Discharge/Compressor surface 0~216 temperature (TH4)
  • Page 60 SW2 setting Display detail Explanation for display Unit Piping temperature (TH3) on error – 40~90 occurring (When the coil thermistor is 0:and less, “–” and – 40~90 temperature are displayed by turns) (Example) When –15: One second interval 2 3 4 5 6 –...
  • Page 61 SW2 setting Display detail Explanation for display Unit Display as an outdoor Capacity setting display capacity code Capacity Code P100 Code P125 display P140 2 3 4 5 6 ● Outdoor unit setting advice The tens digit (Total display for applied setting) Setting details Display details H·P / Cooling only...
  • Page 62 SW2 setting Display detail Explanation for display Unit Indoor setting temperature 17~30 17~30 2 3 4 5 6 Outdoor piping temperature/Cond./Eva. – 39~88 (TH6) (When the temperature is 0: or less, “–” and – 39~88 temperature are displayed by turns) 2 3 4 5 6 Discharge/Comprssor surface 0~255...
  • Page 63 SW2 setting Display detail Explanation for display Unit 0~999 Thermo-ON time to error stop (When the time is 100 or more, the hundreds 0~999 digit and tens, unit digits are displayed by turns.) Minute (Example) When 415 minutes 2 3 4 5 6 One second interval –39~88 Indoor unit piping temperature / cond.
  • Page 64 <Display function of inspection for outdoor unit> • The blinking patterns of two LEDs—LED1(Green) and LED2(Red)—show the diagnoses of troubles in case of malfunction. • By 7SEG indicator board indicates the operation mode and inspection types. LED1 (Green) LED2 (Red) Indication (O.B) Error Name Inspection method...
  • Page 65 From the preceding page. Indication (O.B) Error Name Inspection method LED1 LED2 (Green) (Red) •Abnormal high discharge/compressor surface Check if ball valves are open. 3 blinks 1 blink temperature(TH4) Check the continuity of connector (TH4) on outdoor controller board by using a tester. Check if the unit fills the refrigerant at the same amount as specified.
  • Page 66: Function Setting

    FUNCTION SETTING 12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set as necessary 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. <Table 1>...
  • Page 67 (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.
  • Page 68 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 Setting number Refrigerant address Unit number...
  • Page 69 [Operating Procedure] 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 , fill in the "Check" column in Table 1, and then change them as necessary. For factory settings, refer to the indoor unit's installation manual. Switch off the remote controller.
  • Page 70 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 71 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 72 [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 73: Disassembly Procedure

    DISASSEMBLY PROCEDURE PU(H)-P71VHA.UK PU(H)-P100VHA.UK PU(H)-P71YHA.UK PU(H)-P100YHA.UK PU(H)-P71VHA PU(H)-P100VHA PU(H)-P71YHA PU(H)-P100YHA PU(H)-P71VHA#2.UK PU(H)-P100VHA#2.UK PU(H)-P71YHA#2.UK PU(H)-P100YHA#2.UK PU(H)-P71VHAR3.UK PU(H)-P100VHAR3.UK PU(H)-P71YHAR3.UK PU(H)-P100YHAR3.UK OPERATING PROCEDURE PHOTOS & ILLUSTRATION 1. Removing the service panel and top panel Figure 1 (1) Remove 3 service panel fixing screws (5 × 10) and slide Top panel fixing screws the hook on the right downward to remove the service Top panel...
  • Page 74 OPERATING PROCEDURE PHOTOS 3. Removing the electrical parts box Electrical parts box Photo 3 (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the indoor/outdoor connecting wire from termi- nal block. Controller circuit (4) Remove all the following connectors from controller circuit board;...
  • Page 75 OPERATING PROCEDURE PHOTOS Photo 6 6. Removing the solenoid valve coil <Four-way valve> (21S4), linear expansion valve coil (LEV) (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) Solenoid valve coil (3) Remove the electrical parts box. (See Photo 3) <Four-way valve>...
  • Page 76 OPERATING PROCEDURE PHOTOS 9. Removing the high pressure switch (63H) Photo 8 Lead wire of (1) Remove the service panel. (See Figure 1) high pressure switch (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box. (See Photo 3) (4) Remove 3 right side panel fixing screws (5 ×...
  • Page 77 PU(H)-P125YHA.UK PU(H)-P140YHA.UK PU(H)-P125YHA PU(H)-P140YHA PU(H)-P125YHA#2.UK PU(H)-P140YHA#2.UK PU(H)-P125YHAR3.UK PU(H)-P140YHAR3.UK PU(H)-P125YHAR4.UK PU(H)-P140YHAR4.UK 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 78 OPERATING PROCEDURE PHOTOS 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) Photo 4 (1) Remove the service panel. (See Figure 1) Thermistor <Outdoor 2-phase pipe> (2) Remove the top panel. (See Figure 1) (TH6) (3) Disconnect the connector TH3/TH6 (red) on the controller circuit board in the electrical parts box.
  • Page 79 PHOTOS OPERATING PROCEDURE 6. Removing the solenoid valve coil <Four-way valve> (21S4), Photo 6 Solenoid valve coil linear expansion valve coil (LEV) and solenoid valve coil <Four-way valve> <Bypass valve> (SV) fixing screw (1) Remove the service panel. (See Figure 1) (2) Remove the top panel.
  • Page 80 OPERATING PROCEDURE PHOTOS Solenoid valve coil 9. Removing the bypass valve Photo 7 <Four-way valve> (1) Remove the service panel. (See Figure 1) fixing screw (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box. (See Photo 3) (4) Remove 3 right side panel fixing screws (5 ×...
  • Page 81 OPERATING PROCEDURE PHOTOS 12. Removing the motor for compressor (MC) Photo 10 (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 remove the front cover panel.
  • Page 82: Parts List

    PARTS LIST ( non-RoHS compliant ) STRUCTURAL PARTS PUH-P71VHA/YHA.UK PUH-P100VHA/YHA.UK PU-P71VHA/YHA.UK PU-P100VHA/YHA.UK ty/set Recom- Wiring Remarks PUH-P/PU-P mended Part No. Part Name Specification Diagram (Drawing No.) 71/100 Symbol VHA/YHA.UK (DG12F536H10) — (5×10) F.ST SCREW S70 E10 662 SIDE PANEL (L)
  • Page 83 PARTS LIST ( non-RoHS compliant ) STRUCTURAL PARTS PUH-P125YHA.UK PUH-P140YHA.UK PU-P125YHA.UK PU-P140YHA.UK ty/set Wiring Recom- PUH-P/PU-P Remarks Diagram mended Part No. Part Name Specification 125/140 (Drawing No.) Symbol YHA.UK (5×10) — F.ST SCREW (DG12F536H10) S70 E20 662 SIDE PANEL (L) S70 E20 675 FAN GRILLE S70 E20 668...
  • Page 84 PARTS LIST ( non-RoHS compliant ) FUNCTIONAL PARTS PUH-P71VHA/YHA.UK PUH-P100VHA/YHA.UK (TH6) (TH3) PU-P71VHA/YHA.UK PU-P100VHA/YHA.UK P71/P100VHA P71/P100YHA OC379F...
  • Page 85 PARTS LIST ( non-RoHS compliant ) ty/set Wiring Recom- PUH-P71 PUH-P100 PU-P71 PU-P100 Remarks Part No. Part Name Specification Diagram mended VHA YHA (Drawing No.) Symbol S70 K04 115 PROPELLER FAN S70 K01 097 S70 E40 763 FAN MOTOR S70 E50 763 FAN MOTOR S70 E41 202 THERMISTOR (DISCHARGE)
  • Page 86 PARTS LIST ( non-RoHS compliant ) FUNCTIONAL PARTS PUH-P125YHA.UK PUH-P140YHA.UK PU-P125YHA.UK PU-P140YHA.UK (TH6) (TH3) (TH4) 27 28 OC379F...
  • Page 87 PARTS LIST ( non-RoHS compliant ) ty/set Recom- Wiring Remarks PUH-P PU-P mended Part No. Part Name Specification Diagram (Drawing No.) 125 140 125 140 Symbol YHA.UK FAN MOTOR S70 E40 763 S70 E81 408 HEAT EXCHANGER (TOP) S70 K04 115 PROPELLER FAN S70 K01 097 S70 E82 408...
  • Page 88: Rohs Parts List

    RoHS PARTS LIST STRUCTURAL PARTS PUH-P71VHA/YHA.UK PU-P71VHA/YHA.UK PUH-P100VHA/YHA.UK PU-P100VHA/YHA.UK PUH-P71VHA/YHA PU-P71VHA/YHA PUH-P100VHA/YHA PU-P100VHA/YHA PUH-P71VHA/YHA#2.UK PU-P71VHA/YHA#2.UK PUH-P100VHA/YHA#2.UK PU-P100VHA/YHA#2.UK Q,ty/set Recom- PUH-P/PU-P Wiring Remarks Part No. Part Name Specification Diagram mended 71/100 (Drawing No.) Symbol VHA/YHA.UK VHA/YHA#2.UK VHA/YHA F.ST SCREW (DG12F536H10) (5×10) —...
  • Page 89 RoHS PARTS LIST STRUCTURAL PARTS PUH-P125YHA.UK PUH-P140YHA.UK PU-P125YHA.UK PU-P140YHA.UK PUH-P125YHA PUH-P140YHA PU-P125YHA PU-P140YHA PUH-P125YHA#2.UK PUH-P140YHA#2.UK PU-P125YHA#2.UK PU-P140YHA#2.UK ty/set PUH-P/PU-P Wiring Recom- Remarks Part No. Part Name Specification 125/140 Diagram mended (Drawing No.) Symbol YHA.UK YHA#2.UK (5×10) — (DG12F536H10) F.ST SCREW S70 E20 662 SIDE PANEL (L) S70 E20 675...
  • Page 90 RoHS PARTS LIST STRUCTURAL PARTS PUH-P71VHA/YHAR3.UK PU-P71VHA/YHAR3.UK PUH-P100VHA/YHAR3.UK PU-P100VHA/YHAR3.UK ty/set Wiring Recom- Remarks PUH-P/PU-P Part No. Part Name Specification Diagram mended (Drawing No.) 71/100 Symbol VHA/YHAR3.UK (5×10) (DG12F536H10) — F.ST SCREW S70 E11 662 SIDE PANEL (L) S70 E30 675...
  • Page 91 RoHS PARTS LIST STRUCTURAL PARTS PUH-P125YHAR3.UK PU-P125YHAR3.UK PUH-P125YHAR4.UK PU-P125YHAR4.UK PUH-P140YHAR3.UK PU-P140YHAR3.UK PUH-P140YHAR4.UK PU-P140YHAR4.UK ty/set PUH-P/PU-P Wiring Recom- Remarks 125/140 Diagram Part No. Part Name Specification mended (Drawing No.) Symbol YHAR3.UK YHAR4.UK (5×10) — (DG12F536H12) F.ST SCREW S70 E21 662 SIDE PANEL (L) S70 E30 675 FAN GRILLE S70 E40 668...
  • Page 92 RoHS PARTS LIST FUNCTIONAL PARTS PUH-P71VHA/YHA.UK PUH-P100VHA/YHA.UK (TH6) (TH3) PU-P71VHA/YHA.UK PU-P100VHA/YHA.UK P71/P100VHA P71/P100YHA OC379F...
  • Page 93 RoHS PARTS LIST ty/set Wiring Recom- PUH-P71 PUH-P100 PU-P71 PU-P100 Remarks Specification Part No. Part Name Diagram mended VHA YHA (Drawing No.) Symbol S70 K04 115 PROPELLER FAN S70 K01 097 S70 E40 763 FAN MOTOR S70 E50 763 FAN MOTOR S70 E41 202 THERMISTOR (DISCHARGE) S70 E72 400...
  • Page 94 RoHS PARTS LIST FUNCTIONAL PARTS PUH-P71VHA/YHA PUH-P100VHA/YHA (TH6) (TH3) PU-P71VHA/YHA PU-P100VHA/YHA P71/P100VHA P71/P100YHA OC379F...
  • Page 95 RoHS PARTS LIST ty/set Wiring Recom- PUH-P71 PUH-P100 PU-P71 PU-P100 Remarks Part No. Part Name Specification Diagram mended (Drawing No.) Symbol S70 K04 115 PROPELLER FAN S70 K01 097 S70 E40 763 FAN MOTOR S70 E50 763 FAN MOTOR S70 E41 202 THERMISTOR (DISCHARGE) S70 E72 400 COMPRESSOR...
  • Page 96 RoHS PARTS LIST FUNCTIONAL PARTS PUH-P71VHA/YHA#2.UK PUH-P100VHA/YHA#2.UK PU-P71VHA/YHA#2.UK (TH6) (TH3) PU-P100VHA/YHA#2.UK P71/P100VHA P71/P100YHA OC379F...
  • Page 97 RoHS PARTS LIST ty/set Wiring Recom- PUH-P71PUH-P100 PU-P71 PU-P100 Remarks Part No. Part Name Specification Diagram mended (Drawing No.) Symbol HA#2.UK S70 K04 115 PROPELLER FAN S70 K01 097 S70 E40 763 FAN MOTOR S70 E50 763 FAN MOTOR S70 E41 202 THERMISTOR (DISCHARGE) S70 E72 400 COMPRESSOR...
  • Page 98 RoHS PARTS LIST FUNCTIONAL PARTS PUH-P125YHA.UK PUH-P140YHA.UK PU-P125YHA.UK PU-P140YHA.UK PUH-P125YHA PUH-P140YHA PU-P125YHA PU-P140YHA PUH-P125YHA#2.UK PUH-P140YHA#2.UK PU-P125YHA#2.UK (TH6) PU-P140YHA#2.UK (TH3) (TH4) 27 28 OC379F...
  • Page 99 RoHS PARTS LIST ty/set Wiring Recom- Remarks PUH-P PU-P PUH-P PU-P PUH-P PU-P mended Part No. Part Name Specification Diagram (Drawing No.) 125 140 125 140 125 140 125 140 125 140 125 140 Symbol YHA.UK YHA#2.UK S70 E40 763 FAN MOTOR S70 E81 408 HEAT EXCHANGER (TOP)
  • Page 100 RoHS PARTS LIST FUNCTIONAL PARTS PUH-P71VHA/YHAR3.UK PUH-P100VHA/YHAR3.UK (TH6) (TH3) PU-P71VHA/YHAR3.UK PU-P100VHA/YHAR3.UK P71/P100VHA P71/P100YHA OC379F...
  • Page 101 RoHS PARTS LIST ty/set Wiring Recom- PUH-P71PUH-P100 PU-P71 PU-P100 Remarks Part No. Part Name Specification Diagram mended (Drawing No.) Symbol HAR3.UK S70 K04 115 PROPELLER FAN S70 K01 097 S70 E40 763 FAN MOTOR S70 E50 763 FAN MOTOR S70 E41 202 THERMISTOR (DISCHARGE) S70 E72 400 COMPRESSOR...
  • Page 102 RoHS PARTS LIST FUNCTIONAL PARTS PUH-P125YHAR3.UK PUH-P125YHAR4.UK PUH-P140YHAR3.UK PUH-P140YHAR4.UK PU-P125YHAR3.UK PU-P125YHAR4.UK PU-P140YHAR3.UK PU-P140YHAR4.UK (TH6) (TH3) (TH4) R4 model (TH4) R3 model 27 28 OC379F...
  • Page 103 RoHS PARTS LIST Q'ty/set PUH-P PU-P PUH-P PU-P Wiring Recom- Remarks 125 140 125 140 125 140 125 140 Part No. Part Name Specifi cation Diagram mended (Drawing No.) Symbol Q'ty YHAR3.UK YHAR4.UK 1 G S70 E40 763 FAN MOTOR 2 G S70 E81 408 HEAT EXCHANGER (TOP) 3 G S70 K04 115 PROPELLER FAN 4 G S70 K01 097 NUT...
  • Page 104 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2006 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Apr. 2012 No.OC379 REVISED EDITION-F Distributed in Jul. 2009 No.OC379 REVISED EDITION-E PDF 6 Distributed in Sep. 2008 No.OC379 REVISED EDITION-D PDF 6 Distributed in Apr.

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