Mitsubishi Electric PUHZ-ZRP35VKA2 Service Manual
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Mitsubishi Electric PUHZ-ZRP35VKA2 Service Manual

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
SERVICE MANUAL
Outdoor unit
[Model Name]
PUHZ-ZRP35VKA2
PUHZ-ZRP50VKA2
PUHZ-ZRP60VHA2
PUHZ-ZRP71VHA2
[Service Ref.]
PUHZ-ZRP35VKA2
PUHZ-ZRP35VKA2-ER
PUHZ-ZRP35VKA2-ET
PUHZ-ZRP50VKA2
PUHZ-ZRP50VKA2-ER
PUHZ-ZRP50VKA2-ET
PUHZ-ZRP60VHA2
PUHZ-ZRP60VHA2-ER
PUHZ-ZRP60VHA2-ET
PUHZ-ZRP71VHA2
PUHZ-ZRP71VHA2-ER
PUHZ-ZRP71VHA2-ET
PUHZ-ZRP35VKA2
PUHZ-ZRP50VKA2
R410A
CONTENTS
1. REFERENCE MANUAL ···························· 2
2. SAFETY PRECAUTION ···························· 2
3. FEATURES ············································ 6
4. SPECIFICATIONS ··································· 7
5. DATA ···················································· 8
6. OUTLINES AND DIMENSIONS ················ 11
7. WIRING DIAGRAM ································ 13
8. WIRING SPECIFICATIONS ····················· 15
9. REFRIGERANT SYSTEM DIAGRAM ·········· 20
10. TROUBLESHOOTING ···························· 22
11. FUNCTION SETTING ····························· 77
13. EASY MAINTENANCE FUNCTION ··········· 95
14. DISASSEMBLY PROCEDURE ················· 97
PARTS CATALOG (OCB635)
July 2020
No. OCH635
REVISED EDITION-A
Revision:
• Connectable indoor units
have been added in
REVISED EDITION-A.
OCH635 is void.
Note:
• This manual describes
service data of the out-
door units only.

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Summary of Contents for Mitsubishi Electric PUHZ-ZRP35VKA2

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS July 2020 No. OCH635 SERVICE MANUAL R410A REVISED EDITION-A Outdoor unit [Model Name] [Service Ref.] Revision: PUHZ-ZRP35VKA2 PUHZ-ZRP35VKA2 • Connectable indoor units have been added in PUHZ-ZRP35VKA2-ER REVISED EDITION-A. PUHZ-ZRP35VKA2-ET OCH635 is void. PUHZ-ZRP50VKA2 PUHZ-ZRP50VKA2...

  • Page 2: Reference Manual

    REFERENCE MANUAL INDOOR UNIT SERVICE MANUAL Service Model Name Service Ref. Manual No. OCH625 PLA-ZP35/50/60/71EA PLA-ZP35/50/60/71EA.UK OCB625 OCH626 PLA-RP35/50/60/71EA PLA-RP35/50/60/71EA.UK OCB626 PCA-RP35KAQR2 OCH491 PCA-RP35/50/60/71KAQ PCA-RP35KAQR2-ER OCB491 PCA-RP50/60/71KAQR1 PCA-RP71HAQ OCH492 PCA-RP71HAQ PCA-RP71HAQ-ER OCB492 PKA-RP35/50HALR1 OCH453 PKA-RP35/50HAL PKA-RP35/50HALR1-ER OCB453 PKA-RP60/71KALR1.TH OCH452 PKA-RP60/71KAL PKA-RP60/71KALR1.TH-ER OCB452 OCH528...
  • Page 3 Use the following tools specifically designed for Make sure that the inside and outside of refrige- use with R410A refrigerant. rant piping is clean and it has no contaminants The following tools are necessary to use R410A refrigerant. such as sulfur, oxides, dirt, shaving particles, etc, which are hazard to refrigerant cycle.
  • Page 4 [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 ·...
  • 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 times higher than that of R22, their sizes of flared sections and flare nuts are different.

  • Page 6: Features

    FEATURES PUHZ-ZRP35VKA2 PUHZ-ZRP60VHA2 PUHZ-ZRP35VKA2-ER PUHZ-ZRP60VHA2-ER PUHZ-ZRP35VKA2-ET PUHZ-ZRP60VHA2-ET PUHZ-ZRP50VKA2 PUHZ-ZRP71VHA2 PUHZ-ZRP50VKA2-ER PUHZ-ZRP71VHA2-ER PUHZ-ZRP50VKA2-ET PUHZ-ZRP71VHA2-ET CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT Maximum 30 m (PUHZ-ZRP35–71) The refrigerant circuit with LEV (Linear Expansion Valve) and power receiver always control the optimal refrigerant level regardless of the length (30 m maximum and 5 m minimum) of piping.

  • Page 7: Specifications

    SPECIFICATIONS PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2 Service Ref. PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET Cooling Heating Cooling Heating Mode Single, 50Hz, 230V Power supply (phase, cycle, voltage) Max. current External finish Munsell 3Y 7.8/1.1 Linear Expansion Valve Refrigerant control Hermetic Compressor SNB092FGCM SNB130FGCM2 Model Motor output...

  • Page 8: Data

    5-1. REFILLING REFRIGERANT CHARGE (R410A: kg) Piping length (one way) Initial Service Ref. 10 m 20 m 30 m 40 m 50 m 60 m 75 m charged PUHZ-ZRP35VKA2 PUHZ-ZRP35VKA2-ER — — PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2 PUHZ-ZRP50VKA2-ER — — PUHZ-ZRP50VKA2-ET PUHZ-ZRP60VHA2 PUHZ-ZRP60VHA2-ER —...
  • Page 9 5-3. NOISE CRITERION CURVES SPL(dB) SPL(dB) MODE LINE MODE LINE PUHZ-ZRP35VKA2(-ER/-ET) PUHZ-ZRP60VHA2(-ER/-ET) COOLING COOLING PUHZ-ZRP50VKA2(-ER/-ET) PUHZ-ZRP71VHA2(-ER/-ET) 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...
  • Page 10 1 , 50 1 , 50 Voltage Current 0.28 0.25 0.30 0.27 0.30 0.27 0.45 0.41 Outdoor unit PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2 PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2 Phase , Hz 1 , 50 1 , 50 1 , 50 1 , 50 Voltage Current 7.72 8.92 3.58...

  • Page 11: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2 Unit: mm (inch) PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET OCH635A...
  • Page 12 PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2 Unit: mm (inch) PUHZ-ZRP60VHA2-ER PUHZ-ZRP71VHA2-ER PUHZ-ZRP60VHA2-ET PUHZ-ZRP71VHA2-ET OCH635A...

  • Page 13: Wiring Diagram

    WIRING DIAGRAM PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2 PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET OCH635A...
  • Page 14 PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2 PUHZ-ZRP60VHA2-ER PUHZ-ZRP71VHA2-ER PUHZ-ZRP60VHA2-ET PUHZ-ZRP71VHA2-ET OCH635A...

  • Page 15: Wiring Specifications

    WIRING SPECIFICATIONS 8-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model ZRP35/50V ZRP60/71V Outdoor unit power supply ~/N (single), 50 Hz, 230 V ~/N (single), 50 Hz, 230 V Outdoor unit input capacity main switch (Breaker) *1 16 A 25 A Outdoor unit power supply 3 ×...
  • Page 16 8-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES The following illustration show available connection patterns. 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 cable...
  • Page 17 8-3. INDOOR – OUTDOOR CONNECTING CABLE The cable shall not be lighter than design 60245 IEC or 60227 IEC. Wire No. o Size (mm²) Outdoor power supply Max. 45 m Max. 50 m Max. 80 m 3 o 1.5 (polar) 3 o 2.5 (polar) 3 o 2.5 (polar) and S3 separated Indoor unit-Outdoor unit...
  • Page 18 8-4. 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 5 cm. Do not put them in the same conduit tube.
  • Page 19 M-NET wiring (1) Use 2-core × 1.25mm² shield wire for electric wires. M-NET (Excluding the case connecting to system controller.) terminal 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 20: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Unit: mm (inch) PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2 PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET Thermistor TH7 Heat exchanger (Outdoor) Stop valve Thermistor TH6 Charge plug (with service port) Solenoid valve (Outdoor 2-phase pipe) (Four-way valve) Refrigerant GAS pipe connection(1/2F) Strainer Thermistor TH3...
  • Page 21 9-1. REFRIGERANT COLLECTING (PUMP DOWN) When relocating or disposing of the indoor/outdoor unit, pump down the system following the procedure below so that no refriger- ant is released into the atmosphere. 1 Turn off the power supply (circuit breaker). 2 Connect the low-pressure valve on the gauge manifold to the charge plug (low pressure side) on the outdoor unit. 3 Close the liquid stop valve completely.

  • Page 22: Troubleshooting

    TROUBLESHOOTING 10-1. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the wired remote controller and control board of out- door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa- rized in the table below.
  • Page 23 10-2-2. Test run for wired remote controller <PAR-3xMAA ("x" represents 0 or later)> MENU RETURN SELECT ON/OFF Function buttons Select "Service" from the Main menu, and press the button. Test run Input maintenance info. Function setting Check Self check Select "Test run" with the F1 or F2 button, and press the button.
  • Page 24 <Error information> When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer. Check code, error unit, refrigerant address, unit model name, and serial Error information number will appear. Error code The model name and serial number will appear only if the information have Error unit Ref.
  • Page 25 <Checking the error information> While no errors are occurring, page 2/2 of the error information can be viewed by Main Main menu selecting "Error information" from the Main menu. Restriction Energy saving Errors cannot be reset from this screen. Night setback Filter information Error information Main display:...
  • Page 26 10-2-3. Test run for wireless remote controller (Type C) 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.
  • Page 27 10-3. HOW TO PROCEED "SELF-DIAGNOSIS" 10-3-1. Self-diagnosis <PAR-3xMAA ("x" represents 0 or later)> Select "Service" from the Main menu, and press the button. Test run Input maintenance info. Function setting Check Select "Self check" with the F1 or F2 button, and press the button.
  • Page 28 10-3-2. Remote controller check <PAR-3xMAA ("x" represents 0 or later)> If operations cannot be completed with the remote controller, diagnose the remote controller with this function. Select "Service" from the Main menu, and press the button. Maintenance password Remote controller check Select "Remote controller check"...
  • Page 29 10-3-3. Self-diagnosis for wireless remote controller (Type C) 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. Press the CHECK button twice. •...
  • Page 30 • 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 s 0.5 s 0.5 s 0.5 s Approx.
  • Page 31 10-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is put on> Note: Refer to indoor unit section for code P and code E. Check code Abnormal points and detection method Cause judgment and action 1 No voltage is supplied to termi- 1 Check following items.
  • Page 32 Check code Abnormal points and detection method Cause judgment and action Miswiring of indoor/outdoor unit 1 Contact failure or miswiring of 1 Check disconnection or looseness or polarity connecting wire indoor/outdoor unit connecting of indoor/outdoor unit connecting wire of 1. Outdoor controller circuit board can wire indoor and outdoor units.
  • Page 33 <Abnormalities detected while unit is operating> Check code Abnormal points and detection method Cause judgment and action High pressure (High pressure switch 1 Short cycle of indoor unit 1–6 Check indoor unit and repair defect. 2 Clogged filter of indoor unit 63H operated) 3 Decreased airflow caused by Abnormal if high pressure switch 63H...
  • Page 34 Check code Abnormal points and detection method Cause judgment and action Open/short of outdoor unit thermistors 1 Disconnection or contact fail- 1 Check connection of connector (TH3,TH6/TH7) on (TH3, TH6, TH7, and TH8) ure of connectors the outdoor controller circuit board. Abnormal if open or short is detected during Outdoor controller circuit Check connection of connector (CN3) on the...
  • Page 35 Check Code Abnormal points and detection method Cause Judgment and action To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2 and 2-6. Detailed codes Refer to "10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS". Overvoltage error 1 Abnormal increase in power source 1 Check the field facility for the power supply.
  • Page 36 Check Code Abnormal points and detection method Cause Judgment and action 1 Defective outdoor fan (fan motor) 1 Check outdoor unit air passage. Over heat protection Abnormal if outdoor pipe thermistor (TH3) or short cycle of outdoor unit during detects 70: or more during compressor cooling operation 2 Defective outdoor pipe thermistor 23 Turn the power off, and on again to...
  • Page 37 Check Code Abnormal points and detection method Cause Judgment and action Compressor overcurrent interruption 1 Stop valve of outdoor unit is closed. 1 Open stop valve. Abnormal if overcurrent DC bus or com- 2 Decrease of power supply voltage 2 Check facility of power supply. pressor is detected after compressor starts 3 Looseness, disconnection or con- 3 Correct the wiring (U...
  • Page 38 Check Code Abnormal points and detection method Cause Judgment and action Remote controller transmission error 1 2 remote controller are set as “main.” 1 Set a remote controller to main, and the (E3)/signal receiving error (E5) (In case of 2 remote controllers) other to sub.
  • Page 39 Check Code Abnormal points and detection method Cause Judgment and action 1 Noise has entered transmission wire 12 Turn the power off, and on again to Non defined check code This code is displayed when non-defined of remote controller. check. 2 Noise has entered indoor/ outdoor check code is received.
  • Page 40 <M-NET communication error> Note: “Indoor unit” in the text indicates M-NET board in outdoor unit. Check Code Abnormal points and detection method Cause Judgment and action 1 There are 2 or more same address of Address duplicate definition Search the unit with same address This error is displayed when transmission controller of outdoor unit, indoor unit, as abnormality occurred.
  • Page 41 Check Code Abnormal points and detection method Cause Judgment and action NO ACK signal Common factor that has no relation with Always try the following when the abnormality source 1. Transmitting side controller detects error 1 The unit of former address does not abnormal if a message was transmitted “A7”...
  • Page 42 From the previous page. Check Code Abnormal points and detection method Cause Judgment and action 1 During sequential operation of indoor 5. If displayed address or attribute is Same as mentioned in “A7” of the pre- unit and FRESH MASTER of other FRESH MASTER, indoor unit detects vious page.
  • Page 43 10-5. TROUBLESHOOTING OF PROBLEMS Phenomena Factor Countermeasure 1 12 V DC is not supplied to remote controller. 1 C heck LED2 on indoor controller board. 1. Remote controller display does not work. (1) When LED2 is lit. (Power supply display is not indicated on LCD.) Check the remote controller wiring for 2 12–15 V DC is supplied to remote controller, how-...
  • Page 44 Phenomena Factor Countermeasure 1 Linear expansion valve fault 1 • Discharging temperature and indoor 7. Remote controller display works Opening cannot be adjusted well due to linear heat exchanger temperature does not normally and the unit performs expansion valve fault. heating operation, however, the rise.
  • Page 45 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 46 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 47 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 48 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. •...
  • Page 49 • 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 50 Phone Calls From Customers How to Respond Note 1 Check the set temperature of remote controller. The room cannot be cooled or heated sufficiently. 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 51 Phone Calls From Customers How to Respond Note 3 Air blows out for a while after Something However, this control is also 3 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 52 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 53 10-6. HOW TO CHECK THE PARTS PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2 PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2 PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER PUHZ-ZRP60VHA2-ER PUHZ-ZRP71VHA2-ER PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET PUHZ-ZRP60VHA2-ET PUHZ-ZRP71VHA2-ET Parts name Check points Disconnect the connector then measure the resistance with a tester. Thermistor (TH3) (At the ambient temperature 10 to 30°C) <Outdoor pipe>...
  • Page 54 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. board and fan motor.) (It causes trouble of the outdoor controller circuit Self check...
  • Page 55 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 R0 = 15 k" ± 3% B constant = 3480 ± 2% =15exp{3480( –...
  • Page 56 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 57 (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 diagrams 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 58 10-8. EMERGENCY OPERATION (1) When the check 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) on indoor controller board to ON and short-circuiting the connector (CN31) on outdoor controller board.
  • Page 59 (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 Remarks Operation data COOL HEAT Intake temperature (TH1) 20.5: —...
  • Page 60 Measure the resistance in the following points (connectors, etc.). If they Outdoor controller circuit board are short-circuited, it means that they are broken. PUHZ-ZRP35VKA2 1. Check of Diode (DS1, DS2) PUHZ-ZRP35VKA2-ER P - R , P - S , N - R , N - S 2.
  • Page 61 Outdoor controller circuit board <CAUTION> TEST POINT1 is high voltage. PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2 PUHZ-ZRP60VHA2-ER PUHZ-ZRP71VHA2-ER PUHZ-ZRP60VHA2-ET PUHZ-ZRP71VHA2-ET CNDM Manual defrost, 1–2: Input of low-level sound priority mode detect history record reset, 1–3: Input of external contact point refrigerant address Demand control setting Model select 21S4 4-way valve...
  • Page 62 Outdoor power circuit board Brief Check of DIP-IPM and DIODE MODULE Usually, they are in a state of being short-circuited if they are broken. PUHZ-ZRP60VHA2 Measure the resistance in the following points (connectors, etc.). If they PUHZ-ZRP60VHA2-ER are short-circuited, it means that they are broken. PUHZ-ZRP60VHA2-ET 1.
  • Page 63 Outdoor M-NET board (optional) Switch for communication LED11 LED13 LED12 Outdoor unit display between Receiving CN2M Transmitting connecting display M-NET and outdoor board Connect to M-NET Serial communication with outdoor board LED2 Energizing display of M-NET board (5 V power supply) LED1 SW11 SW12...
  • Page 64 Action by the switch operation Type of Effective timing Switch No. Function Switch No function — — — Power failure Auto recovery No auto recovery When power supply ON automatic recovery *2 3,4,5,6 No function — — — Mode select *3 Demand function Low noise mode Always...
  • Page 65 (2) Function of connector Action by open/ short operation Types Function Effective timing Connector Short Open Connector CN31 Start Emergency operation Normal When power supply ON (3) Special function (a) Low-level sound priority mode (Local wiring) By performing the following modification, 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 66 <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 67 Indication Error Check Outdoor controller board Detailed Contents Inspection method reference code LED1 (Green) LED2 (Red) page 1Check if stop valves are open. 3 blinking 1 blinking Abnormality of shell thermistor(TH33) P.33 2Check if connectors (TH4, TH33, LEV-A, and LEV-B) on outdoor controller and discharging temperature (TH4) board are not disconnected.
  • Page 68 <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 check code by controlling DIP SW2 on ‘A-Control Service Tool’. Operation indicator SW2 : Indicator change of self diagnosis Explanation for display...
  • Page 69 The black square ( ) indicates a switch position. Explanation for display SW2 setting Display detail Unit −40 to 90 Pipe temperature/Liquid(TH3) −40 to 90 (When the coil thermistor detects 0: or below, “−” and temperature are displayed by turns.) (Example) When −10:;...
  • Page 70 The black square ( ) indicates a switch position. Explanation for display SW2 setting Display detail Unit −40 to 90 Pipe temperature / Liquid (TH3) on error occurring (When the coil thermistor detects 0: or below, “–” −40 to 90 and temperature are displayed by turns.) (Example) When −15:;...
  • Page 71 The black square ( ) indicates a switch position. Explanation for display SW2 setting Display detail Unit 0 to 4 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.
  • Page 72 The black square ( ) indicates a switch position. Explanation for display SW2 setting Display detail Unit Indoor setting temperature 17 to 30 17 to 30 °C 2 3 4 5 6 −39 to 88 Outdoor pipe temperature / 2-phase (TH6) (When the temperature is 0: or less, “–”...
  • Page 73 The black square ( ) indicates a switch position. Explanation for display SW2 setting Display detail Unit DC bus voltage 150 to 400 150 to 400 (When it is 100V or more, hundreds digit, tens digit and ones digit are displayed by turns.) 2 3 4 5 6 Capacity save 0 to 100...
  • Page 74 The black square ( ) indicates a switch position. Explanation for display SW2 setting Display detail Unit 0 to 480 LEV-C opening pulse 0 to 480 (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 130 pulse;...
  • Page 75 The black square ( ) indicates a switch position. Explanation for display Display detail Unit SW2 setting 0 to 255 Discharge superheat on error occurring (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by 0 to 255 turns.) (Example) When 150°C;...
  • Page 76 The black square ( ) indicates a switch position. Explanation for display SW2 setting Display detail Unit The following code will be a help to know the Controlling status of compressor operating status of unit. operating frequency • The tens digit Display Compressor operating frequency control Primary current control Secondary current control...

  • Page 77: Function Setting

    FUNCTION SETTING 11-1. 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 78 (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 Procedure.
  • Page 79 11-1-1. Selecting functions using the wired remote controller <PAR-3xMAA ("x" represents 0 or later)> <Service menu> Maintenance password is required Select "Service" from the Main menu, and press the button. Main Main menu Maintenance Initial setting *At the main display, the menu button and select "Service" to make the Service maintenance setting.
  • Page 80 <Function setting> Select "Service" from the Main menu, and press the button. Test run Input maintenance info. Function setting Check Self check Select "Function setting" with the F1 or F2 button, and press the button. Set the indoor unit refrigerant addresses and unit numbers with the F1 Function setting Ref.
  • Page 81 11-1-2. 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] Flow of function selection procedure The flow of the function selection procedure is shown below.
  • Page 82 11-1-3. Selecting functions using the wireless remote controller <PAR-SL100A-E> 1 Going to the function select mode Press the button between of 5 seconds. (Start this operation from the status of remote controller display turned off.) [CHECK] is lighted and "00" blinks. (Fig. 11-1) Press the button to set the "50".
  • Page 83 11-2. FUNCTION SELECTION OF REMOTE CONTROLLER 11-2-1. <PAR-32MAA> The functions of the function buttons change depending on the screen. Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen.
  • Page 84 <Menu structure> Press the button. MENU Main menu Move the cursor to the desired item with the buttons, and press the button. SELECT Vane · Louver · Vent. (Lossnay) High power Timer ON/OFF timer Auto-OFF timer Weekly timer Restriction Temp. range Operation lock Energy saving Auto return...
  • Page 85 <Main menu list> Setting and display items Setting details Vane · Louver · Vent. (Lossnay) Use to set the vane angle. • Select a desired vane setting from 5 different settings. Use to turn ON/OFF the louver. • Select a desired setting from "ON" and "OFF." Use to set the amount of ventilation.

  • Page 86: Monitoring The Operation Data By The Remote Controller

    MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 12-1. HOW TO "MONITOR THE OPERATION DATA" 12-1-1. <PAR-3xMAA ("x" represents 0 or later)> Details on the operation data including each thermistor temperature and error history can be confirmed with the remote controller. Select "Service"...
  • Page 87 12-2. 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 12-2-1. Detail Contents in Request Code. – Compressor-Operating current (rms) 0 to 50 Compressor-Accumulated operating time 0 to 9999...
  • Page 88 Description Request content Unit Remarks (Display range) Indoor unit-Control state – Refer to "12-2-1. Detail Contents in Request Code". Outdoor unit-Control state – Refer to "12-2-1. Detail Contents in Request Code". Refer to "12-2-1. Detail Contents in Request Code". Compressor-Frequency control state –...
  • Page 89 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 90 Description Request content Unit Remarks (Display range) Indoor-Fan operating time 0 to 9999 1 hour (After filter is reset) Indoor-Total operating time 10 hours 0 to 9999 (Fan motor ON time) Indoor fan output value (Sj value) 0 to 255 Fan control data –...
  • Page 91 12-2-1. Detail Contents in Request Code [Operation state] (Request code :" 0") Relay output state Power currently Data display Display Compressor Four-way valve Solenoid valve supplied to compressor – – – – Relay output state Operation mode Operation mode Display Operation mode STOP •...
  • Page 92 [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 93 [Contact demand capacity] (Request code : " 61") Setting content Data display Display Setting value Setting content 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 94 [Indoor unit – Capacity setting information] (Request code : "163") Data display Display Capacity setting state Display Capacity setting state See the table on the right. 35, 36 [Wireless pair No. (indoor control board side) setting] (Request code :" 165") Data display Display Pair No.

  • Page 95: Easy Maintenance Function

    EASY MAINTENANCE FUNCTION 13-1. SMOOTH MAINTENANCE 13-1-1. <PAR-3xMAA ("x" represents 0 or later)> Maintenance data, such as the indoor/outdoor unit’s heat exchanger temperature and compressor operation current can be displayed with “Smooth maintenance”. This cannot be executed during test operation. Depending on the combination with the outdoor unit, this may not be supported by some models.
  • Page 96 <Guide for opration 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 97: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUHZ-ZRP35VKA2 PUHZ-ZRP50VKA2 PUHZ-ZRP35VKA2-ER PUHZ-ZRP50VKA2-ER PUHZ-ZRP35VKA2-ET PUHZ-ZRP50VKA2-ET OPERATING PROCEDURE PHOTOS Top panel Top panel 1. Removing the top panel, service panel, front panel, back Photo 1 fixing screws fixing screw Top panel panel and grille (1) Remove the top panel fixing screws (4 × 10), one from the right and two from the left side, and detach the top panel.
  • Page 98 OPERATING PROCEDURE PHOTOS 3. Removing the electrical parts box Electrical parts box (1) Remove the service panel. (See Photo 2) Photo 5 fixing screw (2) Remove the top panel. (See Photo 1) (3) Remove the front panel. (See Photo 1) Controller circuit board (C.B) Electrical part box...
  • Page 99 OPERATING PROCEDURE PHOTOS 5. Removing the thermistor <Outdoor> (TH7) Photo 7 Electrical parts box Thermistor <Outdoor> (1) Remove the service panel. (See Photo 2) (TH7) (2) Remove the top panel. (See Photo 1) (3) Disconnect the connector TH7 (red) on the controller circuit board in the electrical parts box.
  • Page 100 OPERATING PROCEDURE PHOTOS 8. Removing the 4-way valve Photo 10 (1) Remove the service panel. (See Photo 2) (2) Remove the top panel. (See Photo 1) (3) Remove the front panel. (See Photo 1) (4) Remove the back panel. (See Photo 1) (5) Remove the electrical parts box.
  • Page 101 OPERATING PROCEDURE PHOTOS 12. Removing the compressor (MC) Photo 12 (1) Remove the service panel. (See Photo 2) (2) Remove the top panel. (See Photo 1) (3) Remove the front panel. (See Photo 1) (4) Remove the back panel. (See Photo 1) (5) Remove the electrical parts box.
  • Page 102 PUHZ-ZRP60VHA2 PUHZ-ZRP71VHA2 PUHZ-ZRP60VHA2-ER PUHZ-ZRP71VHA2-ER PUHZ-ZRP60VHA2-ET PUHZ-ZRP71VHA2-ET OPERATING PROCEDURE PHOTOS Top panel fixing screws 1. Removing the service panel and top panel Photo 1 (1) Remove 3 service panel fixing screws (5 × 12) and slide Top panel the hook on the right downward to remove the service Fan grille panel.
  • Page 103 OPERATING PROCEDURE PHOTOS 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) Photo 5 (1) Remove the service panel. (See Photo 1) Electrical parts box (2) Remove the top panel. (See Photo 1) Clamp (3) Disconnect the connector TH7/6 (red) on the controller circuit board in the electrical parts box.
  • Page 104 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 7. Removing the 4-way valve coil (21S4), LEV coil (LEV(A), Photo 8 LEV(B)) 4-way valve coil 4-way valve fixing screw (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Remove the electrical parts box.
  • Page 105 OPERATING PROCEDURE PHOTOS 10. Removing the high pressure switch (63H) Photo 9 (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Remove the electrical parts box. (See Photo 4) Lead wire of (4) Remove 3 right side panel fixing screws (5 ×...
  • Page 106 OPERATING PROCEDURE PHOTOS 12. Removing the compressor (MC) Photo 11 (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Remove 2 front cover panel fixing screws (5 × 12) and remove the front cover panel. (See Photo 1) (4) Remove 2 back cover panel fixing screws (5 ×...
  • Page 108 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2016 MITSUBISHI ELECTRIC CORPORATION Issued: Jul. 2020 No.OCH635 REVISED EDITION-A Published: Sep. 2016 No.OCH635 Specifications are subject to change without notice. Made in Japan...

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