Mitsubishi Electric PUHZ-RP35VHA4 Service Manual
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Mitsubishi Electric PUHZ-RP35VHA4 Service Manual

Mitsubishi electric split-type, heat pump air conditioners service manual
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See also: Technical Data Book
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

R410A
Outdoor unit
[model name]
PUHZ-RP35VHA4
PUHZ-RP50VHA4
PUHZ-RP60VHA4
PUHZ-RP71VHA4
PUHZ-RP100VKA
PUHZ-RP125VKA
PUHZ-RP140VKA
PUHZ-RP100YKA
PUHZ-RP140YKA
PUHZ-RP200YKA
PUHZ-RP250YKA
PUHZ-RP60VHA4
PUHZ-RP71VHA4
[Service Ref.]
PUHZ-RP35VHA4
PUHZ-RP50VHA4
PUHZ-RP60VHA4
PUHZ-RP71VHA4
PUHZ-RP100VKA
PUHZ-RP125VKA
PUHZ-RP140VKA
PUHZ-RP100YKA
PUHZ-RP125YKA
PUHZ-RP140YKA
PUHZ-RP200YKA
PUHZ-RP250YKA
Note:
• This manual describes only
• RoHS compliant products
CONTENTS
1 REFERENCE MANUAL ·································· 2
2 SAFETY PRECAUTION ·································· 2
3 FEATURES ······················································ 6
4 SPECIFICATIONS ··········································· 7
5 DATA ······························································ 10
6 OUTLINES AND DIMENSIONS ···················· 16
7 WIRING DIAGRAM ······································· 20
8 WIRING SPECIFICATIONS ··························· 25
9 REFRIGERANT SYSTEM DIAGRAM ·············· 30
10 TROUBLESHOOTING ··································· 34
11 FUNCTION SETTING ···································· 94
12 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···101
13 EASY MAINTENANCE FUNCTION ·············111
14 DISASSEMBLY PROCEDURE ···················· 116
PARTS CATALOG (OCB451)
May 2009
No.OCH451
service data of the outdoor
units.
have <G> mark on the
spec name plate.

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Summary of Contents for Mitsubishi Electric PUHZ-RP35VHA4

  • Page 1: Table Of Contents

    No.OCH451 SERVICE MANUAL R410A Outdoor unit Note: [model name] [Service Ref.] • This manual describes only service data of the outdoor PUHZ-RP35VHA4 PUHZ-RP35VHA4 units. • RoHS compliant products PUHZ-RP50VHA4 PUHZ-RP50VHA4 have <G> mark on the PUHZ-RP60VHA4 spec name plate. PUHZ-RP60VHA4...

  • Page 2: Reference Manual

    REFERENCE MANUAL 1-1. INDOOR UNIT SERVICE MANUAL Service Model name Service Ref. Manual No. PLA-RP35/50/60/71/100/125BA PLA-RP35/50/60/71/100/125BA#2.UK OCH412 PLA-RP71/125/140BA2 PLA-RP71/125/140BA2.UK OCB412 OCH459 PLA-RP100BA3 PLA-RP100BA3 OCB459 OCH454 PCA-RP50/60/71/100/125/140KA PCA-RP50/60/71/100/125/140KA OCB454 PCA-RP71/125HA PCA-RP71/125HA#1 OC329 OCH453 PKA-RP35/50HAL PKA-RP35/50HAL OCB453 OCH452 PKA-RP60/71/100KAL PKA-RP60/71/100KAL OCB452 PSA-RP71/100/125/140GA PSA-RP71/100/125/140GA#1 OC332 SAFETY PRECAUTION...
  • Page 3 Use ester oil, ether oil or alkylbenzene oil (small Handle tools with care. amount) as the refrigerant oil applied to flares and flange connections. If dirt, dust or moisture enters into refrigerant cycle, that can cause deterioration of refrigerant oil or malfunction of com- If large amount of mineral oil enters, that can cause deterio- pressor.

  • Page 4: Precautions When Reusing Existing R22 Refrigerant Pipes

    [4] Refrigerant leakage detection function This air conditioner (outdoor unit PUHZ-RP35~140, except PUHZ-RP200/250) can detect refrigerant leakage which may happen during a long period of use. In order to enable the leakage detection, settings are required to let the unit memo- rize the initial conditions (initial learning).
  • Page 5 (2) 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-RP35VHA4 PUHZ-RP60VAH4 PUHZ-RP50VHA4 PUHZ-RP71VHA4 PUHZ-RP100VKA PUHZ-RP125VKA PUHZ-RP140VKA PUHZ-RP100YKA PUHZ-RP125YKA PUHZ-RP140YKA PUHZ-RP200YKA PUHZ-RP250YKA CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. Max. 30m (PUHZ-RP35-250) The refrigerant circuit with LEV (Linear Expansion Valve) and power receiver always control the optimal refrigerant level regardless of the length (30m max.

  • Page 7: Specifications

    SPECIFICATIONS Service Ref. PUHZ-RP35VHA4 PUHZ-RP50VHA4 Cooling Heating Cooling Heating Mode Single, 50Hz, 230V Power supply (phase, cycle, voltage) Max. current Munsell 3Y 7.8/1.1 External finish Refrigerant control Linear Expansion Valve Compressor Hermetic SNB130FGCH Model Motor output Inverter Starter type Protection devices HP switch Comp.shell thermo...
  • Page 8 PUHZ-RP100VKA PUHZ-RP125VKA PUHZ-RP140VKA Service Ref. Mode Cooling Heating Cooling Heating Cooling Heating Power supply (phase, cycle, voltage) Single 50Hz, 230V Max. current 26.5 External finish Munsell 3Y 7.8/1.1 Refrigerant control Linear Expansion Valve Compressor Hermetic Model ANB33FDUMT ANB42FDWMT Motor output Inverter Starter type HP switch...
  • Page 9 Service Ref. PUHZ-RP200YKA PUHZ-RP250YKA Mode Cooling Heating Cooling Heating Power supply (phase, cycle, voltage) 3 phase 50Hz, 400V Max. current External finish Munsell 3Y 7.8/1.1 Refrigerant control Linear Expansion Valve Hermetic Compressor ANB66FFRMT Model ANB52FFQMT Motor output Inverter Starter type HP switch Protection devices Comp.shell ther mo...

  • Page 10: Data

    DATA 5-1. REFILLING REFRIGERANT CHARGE (R410A : kg) PUHZ-RP35~140 Piping length (one way) Initial Service Ref. charged PUHZ-RP35VHA4 — — PUHZ-RP50VHA4 — — PUHZ-RP60VHA4 — — PUHZ-RP71VHA4 — — PUHZ-RP100VKA PUHZ-RP100YKA PUHZ-RP125VKA PUHZ-RP125YKA PUHZ-RP140VKA PUHZ-RP140YKA Longer pipe than 30m, additional charge is required.

  • Page 11: Puhz-Rp60Vha4

    5-4. NOISE CRITERION CURVES MICROPHONE UNIT 1.5m GROUND PUHZ-RP35/50VHA4 PUHZ-RP60VHA4 SPL(dB) MODE LINE MODE SPL(dB) LINE COOLING COOLING PUHZ-RP71VHA4 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 THRESHOLD OF HEARING FOR HEARING FOR NC-20 NC-20 CONTINUOUS...

  • Page 12: Puhz-Rp140Vka

    PUHZ-RP140VKA PUHZ-RP200YKA MODE SPL(dB) LINE SPL(dB) MODE LINE COOLING PUHZ-RP140YKA COOLING HEATING HEATING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE THRESHOLD OF APPROXIMATE HEARING FOR NC-20 THRESHOLD OF CONTINUOUS HEARING FOR NC-20 NOISE CONTINUOUS NOISE 1000 2000 4000 8000...
  • Page 13 1 , 50 Voltage Current 0.22 0.14 0.36 0.29 0.36 0.29 0.51 0.43 Outdoor unit PUHZ-RP71VHA4 PUHZ-RP35VHA4 PUHZ-RP50VHA4 PUHZ-RP60VHA4 Phase , Hz 1 , 50 1 , 50 1 , 50 1 , 50 Voltage Current 4.66 4.93 6.72 7.08 6.95...
  • Page 14 PLA-RP100BA3 PLA-RP140BA2 PLA-RP125BA2 Representative matching Mode Cooling Heating Cooling Heating Cooling Heating Capacity 10,000 11,200 12,500 14,000 14,000 16,000 Input 2.39 2.43 3.67 3.50 4.36 4.32 Indoor unit PLA-RP100BA3 PLA-RP125BA2 PLA-RP140BA2 Phase , Hz 1 , 50 1 , 50 1 , 50 Voltage Current...
  • Page 15 PLA-RP100BA3 ×2 PLA-RP125BA2 ×2 Representative matching Cooling Heating Mode Cooling Heating Capacty 19,000 22,400 22,000 27,000 Input 5.50 5.70 6.83 7.48 PLA-RP100BA3 PLA-RP125BA2 Indoor unit Phase , Hz 1, 50 1, 50 Voltage Current 1.00 × 2 0.94 × 2 1.07 x 2 1.00 ×...

  • Page 16: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUHZ-RP35VHA4 Unit : mm PUHZ-RP50VHA4 33 drain hole 347.5 Air intake Air intake 33 drain hole 45.4 Service panel 4-10 21 oval hole (M10 foundation bolt) Service panel for charge plug Air discharge Handle for Connection for...
  • Page 17 PUHZ-RP60VHA4 Unit : mm PUHZ-RP71VHA4...
  • Page 18 PUHZ-RP100VKA Unit : mm PUHZ-RP125VKA PUHZ-RP140VKA PUHZ-RP100YKA PUHZ-RP125YKA PUHZ-RP140YKA...
  • Page 19 PUHZ-RP200YKA Unit : mm PUHZ-RP250YKA...

  • Page 20: Wiring Diagram

    WIRING DIAGRAM PUHZ-RP35VHA4 PUHZ-RP50VHA4 SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor > Power Module LED1,LED2 Motor for Compressor Converter <Operation Inspection Indicators> Fan Motor CB1~CB3 Main Smoothing Capacitor F1~4 Fuse<T6.3AL250V> N.F. Noise Filter Circuit Board 21S4 Solenoid Valve (Four-Way Valve) Switch<Pump Down>...
  • Page 21 PUHZ-RP60VHA4 PUHZ-RP71VHA4 SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor> Converter F1~4 Fuse<T6.3AL250V> Motor for Compressor CB1~CB3 Main Smoothing Capacitor Switch<Pump Down> Noise Filter Circuit Board Fan Motor N.F. CN31 Connector<Emergency Operation> 21S4 Solenoid Valve (Four-Way Valve) Connection Terminal<L-Phase> CN51 LI/LO Connector<Connection for Option>...
  • Page 22 PUHZ-RP100VKA PUHZ-RP125VKA PUHZ-RP140VKA SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor > Connection Terminal<L-Phase> Switch<Pump Down> Motor for Compressor Connection Terminal<N-Phase> CN31 Connector<Emergency Operation> MF1, MF2 Fan Motor Connection Terminal CN51 Connector<Connection for Option> 21S4 Solenoid Valve (Four-Way Valve) Connection Terminal Connector<Connection for Option>...
  • Page 23 PUHZ-RP100YKA PUHZ-RP125YKA PUHZ-RP140YKA SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply > TB-P2 Connection Terminal Switch<Function Switch> Terminal Block<Indoor/Outdoor > TB-C1 Switch<Model Select> Connection Terminal Motor for Compressor Switch<Function Setup> TB-N1 Connection Terminal Switch<Function Setup> MF1, MF2 Fan Motor X52A 52C Relay N.F.
  • Page 24 PUHZ-RP200YKA PUHZ-RP250YKA SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> P.B. Switch<Function Setup> Power Circuit Board Terminal Block<Indoor/Outdoor> Switch<Function Setup> SC-U/V/W Connection Terminal<U/V/W-Phase> Motor for Compressor TB-L1/L2/L3 Connection Terminal<L1/L2/L3-Power supply> Switch MF1,MF2 Fan Motor TB-P1 Connection Terminal Switch<Pump Down> 21S4 Solenoid Valve (Four-Way Valve) TB-P2...

  • Page 25: Wiring Specifications

    WIRING SPECIFICATIONS 8-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model RP35, 50V RP60, 70V RP100,125V RP140V RP100, 125, 140Y RP200, 250 ~/N (single), 50 Hz, ~/N (single), 50 Hz, ~/N (single), 50 Hz, ~/N (single), 50 Hz, 3N~ (3 ph 4-wires), 3N~ (3 ph 4-wires), Outdoor unit power supply 230 V...
  • Page 26 1:1 System (Indoor : PEA-200, 250) 1:2 System (Indoor : PEA-400, 500) Outdoor Indoor Outdoor Indoor unit unit unit No.1 unit Unit Unit Unit Unit power power power power supply supply supply supply Indoor/outdoor Indoor/outdoor unit connection unit connection cable cable Earth leakage breaker Earth leakage breaker...
  • Page 27 Indoor unit model RP35~140 Indoor unit power supply ~/N (single), 50 Hz, 230 V Indoor unit input capacity 16 A Main switch (Breaker) Indoor unit power supply 2 Min. 1.5 Indoor unit power supply earth 1 Min. 1.5 Indoor unit-Outdoor unit 2 Min.
  • Page 28 8-4. 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 29 M-NET wiring M-NET (1) Use 2-core x 1.25mm shield wire for electric wires. terminal (Excluding the case connecting to system controller.) Earth block wire (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 shield wire, twist the shield part to a string and connect it to S terminal.

  • Page 30: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PUHZ-RP35VHA4 unit : mm(inch) PUHZ-RP50VHA4 Thermistor TH7 Heat exchanger (Outdoor) Stop valve Charge plug Thermistor TH6 (with service port) Solenoid valve (Outdoor 2-phase pipe) (Four-way valve) Refrigerant GAS pipe connection(1/2F) Strainer Thermistor TH3 (Outdoor pipe) Muffler Distributor...
  • Page 31 unit : mm(inch) PUHZ-RP100VKA PUHZ-RP125VKA PUHZ-RP100YKA PUHZ-RP125YKA Thermistor TH7 (Outdoor) Heat exchanger Thermistor TH6 (Outdoor 2-phase pipe) Ball valve 4-way valve Strainer Refrigerant GAS pipe connection(5/8) Charge plug Thermistor TH3 (Higt pressure) Muffler (Outdoor pipe) Charge plug (Low pressure) Distributor High pressure switch 63H Strainer...
  • Page 32 unit : mm(inch) PUHZ-RP200YKA Thermistor TH7 (Outdoor) Heat exchanger Thermistor TH6 Ball valve 4-way valve Strainer (Outdoor 2-phase pipe) Refrigerant GAS pipe connection 25.4(1) Charge plug Thermistor TH3 (Higt pressure) Muffler (Outdoor pipe) Charge plug (Low pressure) High pressure Distributor switch 63H Strainer #100...
  • Page 33 9-1. Refrigerant recovering (pump down) Perform the following procedures to recover the refrigerant when moving the indoor unit or the outdoor unit. Turn on the power supply (circuit breaker). When power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CENTRALLY CONTROLLED”...

  • Page 34: Troubleshooting

    TROUBLESHOOTING 10-1. 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 35: 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 36 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 37: How To Proceed "Self-Diagnosis

    10-3. HOW TO PROCEED "SELF-DIAGNOSIS" 10-3-1. 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 38: 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 blink.
  • Page 39 10-3-4. 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 40 • 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 flash pattern Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.

  • Page 41: Self-Diagnosis Action Table

    10-4. SELF-DIAGNOSIS ACTION TABLE (Note 1) Refer to indoor unit section for code P and code E. <Abnormalities detected when the power is put on> Abnormal points and detection method Case Judgment and action Error Code 1 No voltage is supplied to termi- 1 Check following items.
  • Page 42 Abnormal points and detection method Case Judgment and action Error Code 1 Contact failure or miswiring of 1 Check disconnection or looseness or polar- Miswiring of indoor/outdoor unit con- indoor/outdoor unit connecting ity of indoor/outdoor unit connecting wire of necting wire wire indoor and outdoor units.

  • Page 43: Cooling

    <Abnormalities detected while unit is operating> Abnormal points and detection method Judgment and action Error Code Case 1 Short cycle of indoor unit 1~6 Check indoor unit and repair defect. High pressure (High-pressure switch 2 Clogged filter of indoor unit 63H worked) 3 Decreased airflow caused by Abnormal if high-pressure switch 63H...
  • Page 44 Abnormal points and detection method Judgment and action Error Code Case 1 Disconnection or contact 1 Check connection of connector (TH4/TH32) Open/short circuit of discharge temperature thermistor (TH4) / comp. failure of connector (TH4/TH32) on the outdoor controller circuit board. shell thermistor (TH32) on the outdoor controller circuit Check breaking of the lead wire for...
  • Page 45 Abnormal points and detection method Case Judgment and action Error Code 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 46 Abnormal points and detection method Case Judgment and action Error Code 1 Disconnection of compressor 1 Correct the wiring (U Current sensor error W phase) to compres- • • Abnormal if current sensor detects –1.0A wiring sor. Refer to 10-9 (Outdoor power circuit 2 Defective circuit of current sensor to 1.0A during compressor operation.
  • Page 47 Error Code Abnormal points and detection method Judgment and action Case 1 Defective remote controller 1 Replace remote controller. Remote controller control board 1 Abnormal if data cannot be normally read from the nonvolatile memory of the remote controller control board. (Error code: E1) 2 Abnormal if the clock function of remote controller cannot be normally operated.

  • Page 48: Noise

    Error Code Abnormal points and detection method Judgment and action Case 1 Noise has entered transmission 12 Turn the power off, and on again to check. Non defined error code This code is displayed when non defined wire of remote controller. Replace indoor controller board or outdoor error code is received.

  • Page 49: Noise

    <M-NET communication error> (Note) “Indoor unit” in the text indicates M-NET board in outdoor unit. Error Code Abnormal points and detection method Case Judgment and action 1 There are 2 or more same Address duplicate definition Search the unit with same address as abnormality occurred.

  • Page 50: Noise

    Error Code Abnormal points and detection method Case Judgment and action NO ACK signal 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...
  • Page 51 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 indoor unit of multi- refrigerant remote controller, indoor unit detects page.

  • Page 52: Noise

    Error Code Abnormal points and detection method Case Judgment and action 1 Transmitting condition is 1 Check transmission waveform or noise on M-NET NO RESPONSE Abnormal if a message was transmitted repeated fault because of transmission wire. 2 Turn off the power supply of outdoor unit and there were reply (ACK) that message noise and the like.

  • Page 53: Cooling

    Phenomena Factor Countermeasure 1The pair number settings of the wireless remote 4. Even controlling by the wireless 1Check the pair number settings. remote controller, no beep is heard controller and indoor controller board are mismatched. and the unit does not start operat- ing.
  • Page 54 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 55: Symptoms: Nothing Is Displayed On The Remote Controller

    LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller 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 56: Noise

    LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller 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 57 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller 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 58 • Before repair Frequent calling from customers Phone Calls From Customers How to Respond Note Unit does The operating display of remote Check if power is supplied to air conditioner. not operate controller does not come on. Nothing appears on the display unless power is at all.

  • Page 59: Cooling

    Phone Calls From Customers How to Respond Note The room cannot be cooled or heated sufficiently. 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 60 Phone Calls From Customers How to Respond Note Something Air blows out for a while after However, this control is also This is not a malfunction. 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 61 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 62 10-6. HOW TO CHECK THE PARTS PUHZ-RP35/50/60/71VHA4 PUHZ-RP100/125/140VKA PUHZ-RP100/125/140/200/250YKA Parts name Check points Thermistor (TH3) <Outdoor pipe> Disconnect the connector then measure the resistance with a tester. Thermistor (TH4) (At the ambient temperature 10 ~30 ) <Discharge> Thermistor (TH6) Normal Abnormal <Outdoor 2-phase pipe>...
  • Page 63 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. Pay 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 64 10-7. 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 <Outdoor pipe> (TH33) Thermistor R0 = 15k' ± 3% B constant = 3480 ± 2% =15exp{3480( –...

  • Page 65: Linear Expansion Valve

    Linear expansion valve (RP35-RP71) (1) Operation summary of the linear expansion valve • Linear expansion valve opens/closes 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 66 (RP100-RP250) Linear expansion valve (1) Operation summary of the linear expansion valve • Linear expansion valve opens/closes 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 67 (3) How to attach and detach the coil of linear expansion valve (RP35-RP71 ) <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Main body Coil Lead wire Stopper <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 68 (4) How to attach and detach the coil of linear expansion valve (RP100-RP250) <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 69: Heating

    10-8. 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 70: Heating

    (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 —...

  • Page 71: Noise

    10-9. TEST POINT DIAGRAM Outdoor controller circuit board <CAUTION> TEST POINT1 is high voltage. PUHZ-RP35/50/60/71VHA4 PUHZ-RP100/125/140VKA PUHZ-RP100/125/140/200/250YKA CN51 CNDM External signal output 1 to 2: Input of low-level sound priority mode Forced defrost, • Compressor operating signal 1 to 3: Input of external contact point detect history Demand control setting •...

  • Page 72: Noise

    Outdoor noise filter circuit board PUHZ-RP35VHA4 PUHZ-RP50VHA4 LI, NI Voltage of 220-240V AC is input. Connect to the earth (Connect to the terminal block (TB1)) Connect to the earth Connect to the earth CNAC1, CNAC2 220-240V AC (Connect to the...

  • Page 73: Noise

    Outdoor noise filter circuit board PUHZ-RP60VHA4 PUHZ-RP71VHA4 EI, E2 Connect to the earth Connect to the earth CNAC1, CNAC2 220-240V AC (Connect to the outdoor control- ler circuit board (CNAC)) Primary current (Connect to the outdoor power circuit board (CN5)) CN52C 52C relay signal (Connect to the...

  • Page 74: Puhz-Rp125Yka

    Outdoor noise filter circuit board PUHZ-RP100YKA PUHZ-RP125YKA PUHZ-RP140YKA LI1, LI2, LI3, NI PUHZ-RP200YKA POWER SUPPLY PUHZ-RP250YKA LI1-LI2/LI-LI3/LI3-LI1 : AC380/400/415V input LI1-NI/LI2-NI/LI3-NI : AC220/230/240V input (Connect to the terminal block (TB1)) Connect to the earth Connect to the earth CNAC1, CNAC2 AC220/230/240V (Connect to the outdoor controller...

  • Page 75: Noise

    Outdoor power circuit board Brief Check of DIP-IPM and DIP-PFC W Usually, they are in a state of being short-circuited if they are broken. PUHZ-RP35VHA4 Measure the resistance in the following points (connectors, etc.). If they PUHZ-RP50VHA4 are short-circuited, it means that they are broken.

  • Page 76: Puhz-Rp125Vka

    Outdoor power circuit board PUHZ-RP100VKA PUHZ-RP125VKA PUHZ-RP140VKA Connect to the outdoor controller circuit board (CN2) 1-5: Transmitting signal to outdoor controller circuit board (0-5 V DC) Connect to the outdoor 2-5: Zero cross signal (0-5 V DC) controller circuit board (CN4) 3-4: 18 V DC 6-5: 16 V DC 7-5: 16 V DC...

  • Page 77: Noise

    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-RP100YKA Measure the resistance in the following points (connectors, etc.). PUHZ-RP125YKA If they are short-circuited, it means that they are broken. 1.

  • Page 78: Noise

    Outdoor converter circuit board PUHZ-RP100YKA PUHZ-RP125YKA PUHZ-RP140YKA L1-A1 L1-IN, N-IN CK-OU Connect to the ACL1 Connect to the noise filter Connect to the CK capacitor circuit board (LO1, No) Connect to the outdoor power circuit board (CN7) L1-A2, L2-A2, L3-A2 L1-OU, L2-OU, L3-OU Connect to the ACL1, ACL2, ACL3 Connect to the outdoor power circuit board...
  • Page 79 LED3 Outdoor M-NET board (optional) LED4 LED3 Outdoor unit Receiving Transmitting CN2M connecting display LED5 Connect to M-NET Energizing display of Serial M-NET board communication (12V power with outdoor board supply) LED1 Switch for Energizing communication display of display between M-NET board M-NET and board (5V power...

  • Page 80: Function Of Switches, Connectors And Jumpers

    10-10. 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 Forced defrost 1 Start Normal in heating operation. 1 Abnormal history clear Clear Normal off or operating 1 2 3 4 5 6...

  • Page 81: Noise

    Action by the switch operation Type of Swich No. Function Effective timing Switch No function — — — Power failure Auto recovery No auto recovery When power supply ON automatic recovery w2 3,4,5 No function — — — Model select Following SW5-6 reference Mode select w3 Demand function...

  • Page 82: Noise

    (2) Function of connector Action by open/ short operation Types Function Effective timing Connector Short Open Connector CN31 Start When power supply ON Emergency operation Normal Special function (a) Low-level sound priority mode (Local wiring) By performing the following modifi cation, operation noise of the outdoor unit can be reduced by about 3-4 dB. The low noise mode will be activated when a commercially available timer or the contact input of an ON/OFF switch is added to the CNDM connector (option) on the control board of the outdoor unit.

  • Page 83: Noise

    <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 84 Indication Error Error Outdoor controller board Detailed Contents Inspection method code reference LED1 (Green) LED2 (Red) page Check if stop valves are open. 3 blinking 1 blinking Abnormality of shell thermistor(TH32) P.43 Check if connectors (TH4, TH32, LEV-A, and LEV-B) on outdoor controller and discharging temperature (TH4) board are not disconnected.
  • Page 85 <Outdoor unit operation monitor function> [When optional 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...

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Puhz-rp50vha4Puhz-rp71vha4Puhz-rp100vkaPuhz-rp60vha4Puhz-rp125vkaPuhz-rp140vka ... Show all

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