Mitsubishi Electric Mr.SERVICE PUHZ-HRP71VHA Service Manual
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Mitsubishi Electric Mr.SERVICE PUHZ-HRP71VHA Service Manual

Split-type, heat pump air conditioners
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See also: Service Manual , Technical Data Book
SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

R410A
Outdoor unit
[model names]
PUHZ-HRP71VHA
PUHZ-HRP100VHA
PUHZ-HRP100YHA
PUHZ-HRP125YHA
PUHZ-HRP71VHA2
PUHZ-HRP100VHA2
PUHZ-HRP100YHA2
PUHZ-HRP125YHA2
[Service Ref.]
PUHZ-HRP71VHA
PUHZ-HRP100VHA
PUHZ-HRP100YHA
PUHZ-HRP125YHA
PUHZ-HRP71VHA2
PUHZ-HRP71VHA2R1
PUHZ-HRP100VHA2
PUHZ-HRP100VHA2R1
PUHZ-HRP100YHA2
PUHZ-HRP100YHA2R1
PUHZ-HRP125YHA2
PUHZ-HRP125YHA2R1
PUHZ-HRP71VHA
PUHZ-HRP100VHA
PUHZ-HRP100YHA
PUHZ-HRP125YHA
REVISED EDITION-B
Revision:
• PUHZ-HRP71/100VHA2R1 and
PUHZ-HRP100/125YHA2R1
are added in REVISED
EDITION-B.
• Some descriptions have been
modified.
• Please void OCH425
REVISED EDITION-A.
NOTE:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products
have <G> mark on the spec
name plate.
CONTENTS
1. TECHNICAL CHANGES ······························· 2
2. REFERENCE MANUAL ································ 2
3. SAFETY PRECAUTION ······························· 3
4. FEATURES ··················································· 7
5. SPECIFICATIONS ········································ 8
6. DATA ····························································· 9
7. OUTLINES AND DIMENSIONS·················· 12
8. WIRING DIAGRAM ····································· 14
9. WIRING SPECIFICATIONS ························ 20
10. REFRIGERANT SYSTEM DIAGRAM ········ 25
11. TROUBLESHOOTING ································ 27
12. FUNCTION SETTING ································· 85
14. EASY MAINTENANCE FUNCTION ········· 102
15. DISASSEMBLY PROCEDURE ················· 107
PARTS CATALOG (OCB425)
December 2009
No.OCH425

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Summary of Contents for Mitsubishi Electric Mr.SERVICE PUHZ-HRP71VHA

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS December 2009 No.OCH425 REVISED EDITION-B SERVICE MANUAL R410A Outdoor unit [model names] [Service Ref.] Revision: PUHZ-HRP71VHA PUHZ-HRP71VHA • PUHZ-HRP71/100VHA2R1 and PUHZ-HRP100/125YHA2R1 PUHZ-HRP100VHA PUHZ-HRP100VHA are added in REVISED EDITION-B. PUHZ-HRP100YHA PUHZ-HRP100YHA • Some descriptions have been modified.

  • Page 2: Technical Changes

    TECHNICAL CHANGES PUHZ-HRP 71VHA2 PUHZ-HRP 71VHA2R1 PUHZ-HRP100VHA2 PUHZ-HRP100VHA2R1 PUHZ-HRP100YHA2 PUHZ-HRP100YHA2R1 PUHZ-HRP125YHA2 PUHZ-HRP125YHA2R1 • Replace fi lter has been deleted. • Outdoor controller board (C.B.) has been changed. (S/W version up) 1. DRAIN HOSE HEATER (option: PAC-SE60RA-E) is connectable. 2. The starting temperature of FLASH INJECTION is settable. PUHZ-HRP 71VHA PUHZ-HRP 71VHA2 PUHZ-HRP100VHA...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION 3-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. Preparation before the repair service. • Prepare the proper tools. • Prepare the proper protectors. • Provide adequate ventilation. • After stopping the operation of the air conditioner, turn off the power-supply breaker. •...
  • Page 4 [1] Cautions for service (1) Perform service after recovering 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 5: Precautions When Reusing Existing R22 Refrigerant Pipes

    3-3. PRECAUTIONS WHEN REUSING EXISTING R22 REFRIGERANT PIPES (1) Flowchart Measure the existing pipe thickness and check for damage. The existing pipe thickness meets speci- The existing pipe thickness does not meet fications and the pipes are not damaged. specifications or the pipes are damaged. Check if existing air conditioner can operate.
  • Page 6 (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 7: Features

    FEATURES PUHZ-HRP71/100VHA2 PUHZ-HRP100/125YHA2 PUHZ-HRP71/100VHA PUHZ-HRP71/100VHA2R1 PUHZ-HRP100/125YHA PUHZ-HRP100/125YHA2R1 HIGH HEATING CAPACITY Performance (kW) Industry-first flash injection circuit is equipped, which enables to 30%UP about HRP125 keep the equal capacity with the rating even when outside tem- perature is -15 HRP100 HRP71 Outdoor W.B.

  • Page 8: Specifications

    SPECIFICATIONS PUHZ-HRP71/100VHA2 Service Ref. PUHZ-HRP71/100VHA PUHZ-HRP71/100VHA2R1 Cooling Heating Cooling Heating Mode Single 50Hz, 230V Power supply (phase, cycle, voltage) Max. current Munsell 3Y 7.8/1.1 External finish Linear Expansion Valve Refrigerant control Hermetic Compressor Model ANB33FJCMT ANB33FJEMT Motor output Starter type Inverter Protection devices HP switch...

  • Page 9: Data

    DATA 6-1. REFILLING REFRIGERANT CHARGE (R410A : kg) Piping length (one way) Factory Service Ref. charged PUHZ-HRP71VHA PUHZ-HRP71VHA2 PUHZ-HRP71VHA2R1 PUHZ-HRP100VHA(2) PUHZ-HRP100YHA(2) PUHZ-HRP100VHA2R1 PUHZ-HRP100YHA2R1 PUHZ-HRP125YHA PUHZ-HRP125YHA2 PUHZ-HRP125YHA2R1 For pipe longer than 30m, additional charge is required. 6-2. COMPRESSOR TECHNICAL DATA (at 20 ) PUHZ-HRP71VHA PUHZ-HRP100YHA Service Ref.

  • Page 10: Noise Criterion Curves

    6-3. NOISE CRITERION CURVES PUHZ-HRP71VHA PUHZ-HRP71VHA2(R1) SPL(dB) SPL(dB) MODE LINE MODE LINE COOLING COOLING PUHZ-HRP100VHA PUHZ-HRP100VHA2(R1) HEATING HEATING PUHZ-HRP100YHA2(R1) PUHZ-HRP100YHA PUHZ-HRP125YHA PUHZ-HRP125YHA2(R1) 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...

  • Page 11: Standard Operation Data

    6-4. STANDARD OPERATION DATA PEAD-RP71JA PEAD-RP100JA PEAD-RP125JA Representative matching Cooling Heating Cooling Heating Cooling Heating Mode 7,100 8,000 10,000 11,200 12,500 14,000 Capacity 2.15 2.34 3.10 3.89 3.88 Input 3.06 Indoor unit PEAD-RP71JA PEAD-RP100JA PEAD-RP125JA Phase , Hz 1 , 50 1 , 50 1 , 50 Voltage...

  • Page 12: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUHZ-HRP71VHA Unit : mm PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA...
  • Page 13 PUHZ-HRP71VHA2 Unit : mm PUHZ-HRP100VHA2 PUHZ-HRP100YHA2 PUHZ-HRP125YHA2 PUHZ-HRP71VHA2R1 PUHZ-HRP100VHA2R1 PUHZ-HRP100YHA2R1 PUHZ-HRP125YHA2R1...

  • Page 14: Wiring Diagram

    WIRING DIAGRAM PUHZ-HRP71VHA PUHZ-HRP100VHA [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor> P.B. Switch<Model Select> Power Circuit Board Motor for Compressor TABU/V/W Connection Terminal<U/V/W-Phase> Switch<Function Setup> MF1, MF2 Fan Motor TABS/T Connection Terminal <L/N-Phase> Switch<Function Setup> 21S4 Solenoid Valve (Four-Way Valve) Switch TABP1/P2/P...
  • Page 15 PUHZ-HRP100YHA PUHZ-HRP125YHA [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> P.B. Power Circuit Board Controller Circuit Board C.B. Terminal Block<Indoor/Outdoor > TB-U/V/W Connection Terminal<U/V/W-Phase> Switch<Forced Defrost, Defect History Record Motor for Compressor TB-L1/L2/L3 Reset, Refrigerant Address> Connection Terminal<L1/L2/L3-Power Supply> MF1, MF2 Fan Motor TB-P2...
  • Page 16 PUHZ-HRP71VHA2 PUHZ-HRP100VHA2 [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor> P.B. Connector<Connection for Option> Power Circuit Board Motor for Compressor U/V/W Connection Terminal<U/V/W-Phase> Connector<A-Control Service Inspection Kit> MF1, MF2 Fan Motor Connection Terminal <L-Phase> Connector CNDM 21S4 Solenoid Valve (Four-Way Valve) <...
  • Page 17 PUHZ-HRP100YHA2 PUHZ-HRP125YHA2 [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> P.B. Power Circuit Board C.B. Controller Circuit Board Terminal Block<Indoor/Outdoor > TB-U/V/W Connection Terminal<U/V/W-Phase> Switch<Forced Defrost, Defect History Record Motor for Compressor TB-L1/L2/L3 Connection Terminal<L1/L2/L3-Power Supply> Reset, Refrigerant Address> MF1, MF2 Fan Motor TB-P2...
  • Page 18 PUHZ-HRP71VHA2R1 PUHZ-HRP100VHA2R1 [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor> Connector<Emergency Operation> P.B. CN31 Power Circuit Board Motor for Compressor < > U/V/W Connection Terminal<U/V/W-Phase> Connector Connection for Option MF1, MF2 Fan Motor Connector<Connection for Option> Connection Terminal <L-Phase> 21S4 Solenoid Valve (Four-Way Valve) Connector<A-Control Service Inspection Kit>...
  • Page 19 PUHZ-HRP100YHA2R1 PUHZ-HRP125YHA2R1 [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> P.B. Power Circuit Board C.B. Controller Circuit Board Terminal Block<Indoor/Outdoor > TB-U/V/W Connection Terminal<U/V/W-Phase> Switch<Manual Defrost, Defect History Record Motor for Compressor TB-L1/L2/L3 Connection Terminal<L1/L2/L3-Power Supply> Reset, Refrigerant Address> MF1, MF2 Fan Motor TB-P2...

  • Page 20: Wiring Specifications

    WIRING SPECIFICATIONS 9-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model HRP71V, HRP100VHA HRP100VHA2(R1) HRP100, 125Y Outdoor unit power supply ~/N (single), 50 Hz, ~/N (single), 50 Hz, 3N ~ (3phase), 50 Hz, 230 V 230 V 400 V Outdoor unit input capacity 32 A 40 A...

  • Page 21: 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 Outdoor unit power supply <For models without heater> Earth leakage breaker * The optional indoor power supply terminal kit is required. Wiring circuit breaker or isolating switch Outdoor unit Indoor unit/outdoor unit connecting cords...
  • Page 22 9-3. INDOOR – OUTDOOR CONNECTING CABLE The cable shall not be lighter than design 60245 IEC or 60227 IEC. Wire No. Size ( Outdoor power supply Max. 45m Max. 50m Max. 80m Indoor unit-Outdoor unit 1.5 (polar) 2.5 (polar) 2.5 (polar) and S3 separated Indoor unit-Outdoor unit earth Min.
  • Page 23 9-4. M-NET WIRING METHOD (Points to notice) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication. Place them at intervals of more than 5 cm. Do not put them in the same conduit tube.
  • Page 24 M-NET wiring M-NET (1) Use 2-core × 1.25mm shield wire for electric wires. terminal Ground (Excluding the case connecting to system controller.) block wire (2) Connect the wire to the M-NET terminal block. Connect one core of the transmission wire (non-polar) to A(M1) terminal and the other to B(M2). Peel the shield wire, twist the shield part to a string and connect it to S terminal.

  • Page 25: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PUHZ-HRP71VHA PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA PUHZ-HRP71VHA2 PUHZ-HRP100VHA2 PUHZ-HRP100YHA2 PUHZ-HRP125YHA2 High pressure sensor (63HS) Thermistor TH7 (only for HRP·HA2) (Outdoor) Heat exchanger Thermistor Solenoid valve Ball valve (Outdoor (Four-way valve) 2-phase pipe) Refrigerant GAS pipe Strainer connection Charge plug (5/8 inch) Thermistor TH3 (High pressure)
  • Page 26 10-1. Refrigerant recovering (pump down) Perform the following procedures to recover the refrigerant when moving the indoor unit or the outdoor unit. 1 Turn on the power supply (circuit breaker). w When power is supplied, make sure that “CENTRALLY CONTROLLED” is not displayed on the remote controller. If “CENTRALLY CONTROLLED”...

  • Page 27: Troubleshooting

    TROUBLESHOOTING 11-1. TROUBLESHOOTING <Error code display by self-diagnosis and actions to be taken for service (summary)> Present and past error codes are logged and displayed on the wired remote controller and control board of outdoor unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring at service, are summarized in the table below.
  • Page 28 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 29 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 30: 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 31: 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 address or refrigerant address will blink.
  • Page 32 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 33 • 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 34: Self-Diagnosis Action Table

    11-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is turned on> (Note 1) Refer to indoor unit section for code P and code E. Abnormal point and detection method Judgment and action Error Code Case 1 No voltage is supplied to termi- 1 Check following items.
  • Page 35 Error Code Abnormal point and detection method Case Judgment and action 1 Disconnection or contact failure 1 Check connection of connector (63H,63L) on 2 connector open Abnormal if both 63H and 63L connector of connector (63H,63L) on outdoor controller circuit board. circuits are open for three minutes continu- outdoor controller circuit board.
  • Page 36 <Abnormalities detected while unit is operating> <Abnormalities detected while unit is operating> Abnormal point 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 operated) 3 Decreased airflow caused by...
  • Page 37 Abnormal point and detection method Case Judgment and action Error Code 1 Disconnection or contact failure 1 Check connection of connector (TH3, TH32, Open/short of outdoor unit thermistors (TH3, TH32, TH33, TH6, TH7, and TH8) of connectors TH33, TH7/6) on the outdoor controller circuit Abnormal if open or short is detected Outdoor controller circuit board: board.
  • Page 38 Abnormal point 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 39 Abnormal point and detection method Judgment and action Error Code Case Current sensor error or input current error 1 Disconnection of compressor 1 Correct the wiring (U W phase) to • • • Abnormal if current sensor detects –1.0A wiring compressor.
  • Page 40 Error Code Abnormal point and detection method Judgment and action Case Remote controller control board 1 Defective remote controller 1 Replace remote controller. 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 41 Error Code Abnormal point and detection method Judgment and action Case Freezing/overheating protection is working 1 Overcharge of refrigerant 12 Check operating condition of refrigerant Overheating protection <Heating mode> 2 Defective refrigerant circuit circuit. Abnormal if condensing temperature of (clogs) pressure sensor (63HS) detects 3 Malfunction of linear expansion valve 3 Check linear expansion valve.
  • Page 42 <M-NET communication error> (Note) “Indoor unit” in the text indicates M-NET board in outdoor unit. Error Code Abnormal point and detection method Case Judgment and action 1 There are 2 or more same Address duplicate definition Search the unit with same address as abnor- This error is displayed when transmission address of controller of out- mality occurred.
  • Page 43 Error Code Abnormal point 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 44 From the previous page. Error Code Abnormal point and detection method Case Judgment and action 4. If displayed address or attribute is 1 During group operation with Same as mentioned in “A7” of the previous indoor unit of multi-refrigerant remote controller, indoor unit detects page.

  • Page 45: Troubleshooting By Inferior Phenomena

    Error Code Abnormal point and detection method Case Judgment and action 1 Transmitting condition is 1 Check transmission waveform or noise on M-NET NO RESPONSE repeated fault because of Abnormal if a message was transmitted transmission wire. noise and the like. and there were reply (ACK) that message 2 Extinction of transmission wire 2 Turn off the power supply of outdoor unit...
  • Page 46 Phenomena Factor Countermeasure 1 The pair number settings of the wireless remote 4. Even controlling by the wireless 1 Check 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 47 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 48: 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 49 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 50 LED display of the indoor controller board LED1 : Symptoms: Nothing is displayed on the remote controller 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 51 • 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 52 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 53 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 54 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: when pipes or piping joints are cooled, they unit.
  • Page 55 11-6. HOW TO CHECK THE PARTS PUHZ-HRP71VHA PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA PUHZ-HRP71VHA2 PUHZ-HRP100VHA2 PUHZ-HRP100YHA2 PUHZ-HRP125YHA2 PUHZ-HRP71VHA2R1 PUHZ-HRP100VHA2R1 PUHZ-HRP100YHA2R1 PUHZ-HRP125YHA2R1 Parts name Check points Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. <Outdoor pipe> (At the ambient temperature 10 ~30 ) Thermistor (TH4) Normal Abnormal...
  • Page 56 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 57 <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3) • Thermistor <Outdoor 2-phase pipe> (TH6) • Thermistor <Outdoor> (TH7) • Thermistor <Outdoor pipe> (TH32) • Thermistor <Outdoor pipe> (TH33) Thermistor R0 = 15k' ± 3% B constant = 3480 ± 2% =15exp{3480( 273+t –...

  • Page 58: Linear Expansion Valve

    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 59 (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 60: Emergency Operation

    11-8. EMERGENCY OPERATION (1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency opera- tion switch (SWE) on indoor controller board to ON and short-circuiting the connector (CN31) on outdoor controller board.
  • Page 61 (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 62: Test Point Diagram Outdoor Controller Circuit Board

    11-9. TEST POINT DIAGRAM <CAUTION> TEST POINT1 is high voltage. Outdoor controller circuit board PUHZ-HRP71VHA PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA CN51 Forced defrost, detect history record reset, External signal output Demand control setting refrigerant address • Compressor operat- ing signal • Abnormal signal CNDM Model select 1 to 2:...
  • Page 63 Outdoor controller circuit board PUHZ-HRP71VHA2 PUHZ-HRP100VHA2 PUHZ-HRP100YHA2 PUHZ-HRP125YHA2 PUHZ-HRP71VHA2R1 PUHZ-HRP100VHA2R1 PUHZ-HRP100YHA2R1 PUHZ-HRP125YHA2R1 CN51 Manual defrost, detect history record reset, External signal output Function switch Demand control setting refrigerant address • Compressor operat- ing signal • Abnormal signal CNDM Model select 1 to 2: Input of low-level sound priority mode...
  • Page 64 Outdoor noise filter circuit board PUHZ-HRP71VHA PUHZ-HRP100VHA CN52C 52C driving signal (Connect to the outdoor controller circuit board (CN52C).) LO, NO Voltage of 220-240V AC is output (Connect to the outdoor CNAC1, CNAC2 power circuit board 220-240V AC (TABS, TABT)) (Connect to the outdoor control- ler circuit board...
  • Page 65 Outdoor noise filter circuit board PUHZ-HRP100YHA PUHZ-HRP125YHA LI1, LI2, LI3, NI POWER SUPPLY 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 CNAC1, CNAC2 AC220/230/240V (Connect to the outdoor controller Connect to the earth circuit board (CNAC)) CNCT Primary current...
  • Page 66 Brief Check of POWER MODULE Outdoor power circuit board W Usually, they are in a state of being short-circuited if they are broken. PUHZ-HRP71VHA Measure the resistance in the following points (connectors, etc.). PUHZ-HRP100VHA If they are short-circuited, it means that they are broken. 1.
  • Page 67 Outdoor power circuit board PUHZ-HRP71VHA2 PUHZ-HRP100VHA2 PUHZ-HRP71VHA2R1 PUHZ-HRP100VHA2R1 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 68 Brief Check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. Outdoor power circuit board Measure the resistance in the following points (connectors, etc.). PUHZ-HRP100YHA If they are short-circuited, it means that they are broken. 1.
  • Page 69 Outdoor converter circuit board PUHZ-HRP100YHA PUHZ-HRP125YHA PUHZ-HRP100YHA2 PUHZ-HRP125YHA2 PUHZ-HRP100YHA2R1 PUHZ-HRP125YHA2R1 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...
  • Page 70 Connect to the outdoor power Active filter module circuit board (TABP2) PUHZ-HRP71VHA PUHZ-HRP100VHA L1, L2 Connect to the Non-connect DCL (Reactor) Upper Lower side side Non-connect Connect to the outdoor power circuit board (TABP1) Connect to the outdoor power circuit board (CNAF) –...

  • Page 71: Function Of Switches, Connectors And Jumpers

    11-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches Type Action by the switch operation Function Effective timing Switch switch When compressor is working Forced defrost 1 Start Normal in heating operation. 1 Abnormal history clear Clear Normal off or operating 1 2 3 4 5 6...
  • Page 72 Action by the switch operation Type of Switch Function Effective timing Switch No function — — — Power failure Auto recovery No auto recovery When power supply ON automatic recovery 2 No function — — — 3,4,5 Model select Following SW5-6 reference Power consumption SW7-1 SW7-2...
  • Page 73 Special function (a) Low-level sound priority mode (Local wiring) Unit enters into Low-level sound priority mode by external signal input setting. Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual. Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for demand input located on the outdoor controller board enables to control compressor operation frequency.
  • Page 74 <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 abnor- mality can be indicated in details by connecting an optional part “A-Control Service Tool (PAC-SK52ST)” to connector CNM on outdoor controller board.
  • Page 75 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 thermostat P.36 Check if connectors (TH4, LEV-A, and LEV-B) on outdoor controller and discharging temperature (TH4) board are not disconnected.
  • Page 76 <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”.
  • Page 77 Display detail Explanation for display Unit SW2 setting Pipe temperature / Liquid (TH3) – 40~90 – 40~90 (When the coil thermistor detects 0: or below, “–” and temperature are displayed by turns.) (Example) When -10:; 2 3 4 5 6 0.5 secs.
  • Page 78 SW2 setting Display detail Explanation for display Unit Pipe temperature / Liquid (TH3) on error – 40~90 occurring (When the coil thermistor detects 0: or below, “–” – 40~90 and temperature are displayed by turns.) (Example) When –15:; 0.5 secs. 0.5secs.
  • Page 79 SW2 setting Display detail Explanation for display Unit The number of connected indoor units (The number of connected indoor units are dis- played.) Unit 2 3 4 5 6 Capacity setting display Displayed as an outdoor capacity code. Capacity Code HRP71V Code HRP100V, 100Y...
  • Page 80 SW2 setting Display detail Explanation for display Unit Indoor setting temperature 17~30 17~30 2 3 4 5 6 Outdoor pipe temperature / Cond./ Eva. -39~88 (TH6) (V/YHA) (When the temperature is 0: or less, “–” and -39~88 temperature are displayed by turns.) Pressure saturation temperature (T 63HS 2 3 4 5 6...
  • Page 81 SW2 setting Display detail Explanation for display Unit 0~255 Capacity save (When the capacity is 100% hundreds digit, tens digit 0~255 and ones digit are displayed by turns.) When air conditioner is connected to (Example) When 100%; M-NET and capacity save mode is 0.5 secs.
  • Page 82 SW2 setting Display detail Explanation for display Unit 0~480 LEV-A opening pulse on error occurring (When it is 100 pulse or more, hundreds digit, tens 0~480 digit and ones digit are displayed by turns.) (Example) When 130 pulse; Pulse 0.5 secs. 0.5secs.
  • Page 83 SW2 setting Display detail Explanation for display Unit 0~255 Discharge superheat on error occurring (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by 0~255 turns.) Cooling = TH4-TH6 (V/YHA) Heating = TH4-TH5 (Example) When 150°C;...
  • Page 84 SW2 setting Display detail Explanation for display Unit Controlling status of compressor The following code will be a help to know the operating frequency operating status of unit. • The tens digit Display Compressor operating frequency control Primary current control Secondary current control •...

  • Page 85: Function Setting

    FUNCTION SETTING 12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1. <Table 1>...
  • Page 86 (2) Functions are 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 Set the indoor unit number of Operating Procedure.
  • Page 87 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 88 [Operating Procedure] Check the function selection settings. Changing the function selection settings for each mode will change its relevant mode function. Perform steps through to check all the function selection settings, and then change the settings as necessary. For the initial settings, refer to the <Table 1> in the chapter 12-1. The following is the procedure to operate the remote controller internal sensor. Turn off the remote controller.
  • Page 89 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] Flow of function selection procedure The flow of the function selection procedure is shown below.
  • Page 90 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 91 [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 92: Monitoring The Operation Data By The Remote Controller

    MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 13-1. HOW TO "MONITOR THE OPERATION DATA" • Turn on the [Monitoring the operation data] Example) Request code "004" Discharge temperature 69 Refrigerant address "00" A: Maintenance mode B: Refrigerant address C: Data display area D: Request code display area (1) Press the button for 3 seconds so that [ Maintenance mode] appears on the screen (at...
  • Page 93 13-2. 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 13-2-1. Detail Contents in Request Code. – Compressor-Operating current (rms) 0 –...
  • Page 94 Description Request content Unit Remarks (Display range) Indoor unit-Control state – Refer to 13-2-1.Detail Contents in Request Code. Outdoor unit-Control state – Refer to 13-2-1.Detail Contents in Request Code. Compressor-Frequency control state Refer to 13-2-1.Detail Contents in Request Code. – Outdoor unit-Fan control state –...
  • Page 95 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 96 Description Request content Unit Remarks (Display range) Indoor-Fan operating time 0 – 9999 1 hour (After filter is reset) Indoor-Total operating time 0 – 9999 10 hours (Fan motor ON time) Indoor fan output value (Sj value) 0 – 255 Fan control data –...
  • Page 97 13-2-1. Detail Contents in Request Code Example) Request code "004" Discharge temperature 69 Refrigerant address "00" A: Maintenance mode display B: Refrigerant address C: Data display area D: Request code display area [Operation state] (Request code ": 0 ") Relay output state Power currently Data display Display...
  • Page 98 [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 Actuator output state...
  • Page 99 [Contact demand capacity] (Request code "61") Setting content Data display Setting Display Setting value Setting content SW7-1 SW7-2 100% [External input state] (Request code "62") Input state : Input present Data display Contact demand Silent mode Spare 1 Spare 2 Display Input state input...
  • Page 100 [Outdoor unit switch setting display (SW1 to SW10, except SW3)] Request codes: 73 to 82 0: Switch OFF 1: Switch ON 0: Switch OFF 1: Switch ON SW1, SW2, SW6, SW7 Data display Data display 00 00 00 00 00 01 00 01 00 02 00 02...
  • Page 101 [Indoor unit – Model setting information] (Request code : 162) Data display Display Model setting state Display Model setting state PSA-RP•GA, PSH-PGAH PKA-RP•FAL(2), PKH-P•FALH See the table on the right. PEAD-RP•EA(2)/GA, PEHD-P•EAH PCA-RP•GA(2), PCH-P•GAH, PLA-RP71-100BA2 SEZ-KA•VA SLZ-KA•VA(L) PCA-RP•HA PKA-RP•GAL, PKH-P•GALH PLA-RP•...

  • Page 102: Easy Maintenance Function

    EASY MAINTENANCE FUNCTION Reduces maintenance work drastically. Enables you to check operation data of the indoor and outdoor units by remote controller. Furthermore, use of maintenance stable-operation control that fixes the operating frequency, allows smooth inspection, even for inverter models. Smooth Mainte- Discharge temperature 64 Conventional inspection work...
  • Page 103 Data measurement When the operation is stabilized, measure operation data as explained below. (4) Press the [TEMP] buttons ( ) to select the desired refrigerant address. [Screen (5) Select the type of data to be displayed. After selecting, go to step (6). Compressor information button MENU...
  • Page 104 14-2. GUIDE FOR OPERATION CONDITION Check Points Inspection item Result 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) the graph.

  • Page 105: Initial Settings For Refrigerant Leakage Detection Function

    14-3. INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION Remote controller button position This air conditioner (Outdoor unit) can detect refrigerant leakage which may happen during a long period of use. In order to enable the leakage detection, the following settings are required to let the unit memorize the initial condition (initial refregerant amount).
  • Page 106 3. How to start "Judgment of refrigerant leakage " mode. To know the current condition of refrigerant amount, same operation must be performed. Please repeat the same procedure as when "Initial learning operation" for "Checking operation". Press CLOCK button and select the [GAS LEAK JUDGE] Refrigerant leakage Refrigerant leakage detection...

  • Page 107: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUHZ-HRP71VHA PUHZ-HRP100VHA PUHZ-HRP71VHA2(R1) PUHZ-HRP100VHA2(R1) OPERATING PROCEDURE PHOTOS & ILLUSTRATION Figure 1 (PUHZ-HRP71/100VHA) 1. Removing the service panel and top panel (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 panel.
  • Page 108 OPERATING PROCEDURE PHOTOS 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) Photo 4 and thermistor <Outdoor>(TH7) (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the connectors TH7/6 (red) on the controller Heat circuit board in the electrical parts box.
  • Page 109 OPERATING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), and linear expansion valve coil (LEV-A, LEV-B, LEV-C) Photo 9 (PUHZ-HRP71/100VHA) (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) Linear Linear expansion [Removing the 4-way valve coil] expansion Linear expansion...
  • Page 110 OPERATING PROCEDURE PHOTOS 11. Removing bypass valve coil (SV) and bypass valve Photo 10 Thermistor Bypass valve (only PUHZ-HRP·V/YHA, PUHZ-HRP·V/YHA2) <Outdoor pipe> coil fixing screw (1) Remove the service panel. (See Figure 1) Replace filter (TH33) (2) Remove the top panel. (See Figure 1) (3) Remove 3 right side panel fixing screws (5 ×...
  • Page 111 OPERATING PROCEDURE PHOTOS 14. Removing the compressor (MC) Photo 12 (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 Compressor (MC) Valve bed Separator remove the front cover panel.
  • Page 112 PUHZ-HRP100YHA PUHZ-HRP125YHA PUHZ-HRP100YHA2(R1) PUHZ-HRP125YHA2(R1) OPERATING PROCEDURE PHOTOS & ILLUSTRATION 1. Removing the service panel and top panel Figure 1 (PUHZ-HRP100/125YHA) (1) Remove 3 service panel fixing screws (5 × 10) and slide Top panel fixing screws Top panel the hook on the right downward to remove the service panel.
  • Page 113 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 4. Disassembling the electrical parts box (1) Disconnect all the connectors on the controller circuit Electrical board. parts box Photo 4 (2) Remove the 3 screws, screw 1, 2 and 3, that fix the plate equipped with the outdoor controller circuit board, and the electrical parts box, screw 1 from the front and the screw 2 and 3 from the bottom of the electrical parts box.
  • Page 114 PHOTOS OPERATING PROCEDURE Photo 9 5. Removing the thermistor <Outdoor 2-phase pipe> (TH6) Thermistor and thermistor <Outdoor> (TH7) Electrical parts box <Outdoor 2-phase pipe> (TH6) (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the connectors, TH7/6 (red) on the controller circuit board in the electrical parts box.
  • Page 115 OPERATING PROCEDURE PHOTOS 8. Removing the 4-way valve coil (21S4), and linear expan- Photo 14 (PUHZ-HRP100/125YHA) sion valve coil (LEV-A, LEV-B, LEV-C) (1) Remove the service panel. (See Figure 1) Linear (2) Remove the top panel. (See Figure 1) Linear expansion expansion Linear expansion...
  • Page 116 OPERATING PROCEDURE PHOTOS Photo 15 12. Removing bypass valve coil (SV) and bypass valve (only PUHZ-HRP·V/YHA, PUHZ-HRP·V/YHA2) Thermistor (1) Remove the service panel. (See Figure 1) Bypass valve <Outdoor pipe> coil fixing screw (2) Remove the top panel. (See Figure 1) (TH33) Replace filter (3) Remove 3 right side panel fixing screws (5 ×...
  • Page 117 OPERATING PROCEDURE PHOTOS 14. Removing the reactors (ACL1, ACL2, ACL3) Photo 16 Electrical parts box (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the 6 screws, that fix the front panel and remove the front panel.
  • Page 118 Receiver leg fixing screws HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Dec. 2009 No.OCH425 REVISED EDITION-B PDF 7 Distributed in Sep. 2008 No.OCH425 REVISED EDITION-A PDF 7 Distributed in Oct.

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