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Mitsubishi Electric PUHZ-HRP71VHA Service Manual
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Mitsubishi Electric 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
[Service Ref.]
PUHZ-HRP71VHA
PUHZ-HRP100VHA
PUHZ-HRP100YHA
PUHZ-HRP125YHA
PUHZ-HRP71VHA
PUHZ-HRP100VHA
PUHZ-HRP100YHA
PUHZ-HRP125YHA
NOTE:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
CONTENTS
1. REFERENCE MANUAL·································· 2
2. SAFETY PRECAUTION ································· 3
3. FEATURES ····················································· 7
4. SPECIFICATIONS··········································· 8
5. DATA ······························································· 9
6. OUTLINES AND DIMENSIONS···················· 12
7. WIRING DIAGRAM······································· 13
8. WIRING SPECIFICATIONS ·························· 15
9. REFRIGERANT SYSTEM DIAGRAM ·········· 20
10. TROUBLESHOOTING································ 22
11. FUNCTION SETTING ································· 77
13. EASY MAINTENANCE FUNCTION ··········· 94
14. DISASSEMBLY PROCEDURE··················· 99
PARTS CATALOG (OCB425)
October 2007
No.OCH425

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Summary of Contents for Mitsubishi Electric PUHZ-HRP71VHA

  • Page 1: Table Of Contents

    SERVICE MANUAL R410A Outdoor unit NOTE: • This manual describes only [Service Ref.] [model names] service data of the outdoor units. PUHZ-HRP71VHA PUHZ-HRP71VHA • RoHS compliant products have <G> mark on the spec name PUHZ-HRP100VHA PUHZ-HRP100VHA plate. PUHZ-HRP100YHA PUHZ-HRP100YHA PUHZ-HRP125YHA...

  • Page 2: Reference Manual

    REFERENCE MANUAL 1-1. INDOOR UNIT SERVICE MANUAL Service Model name Service Ref. Manual No. PLA-RP35/50/60/100/125BA PLA-RP35/50/60/100/125BA OCH412 OCB412 PKA-RP60/100FAL PKA-RP60/100FAL OC331 PKA-RP50FAL2 PKA-RP50FAL2 PEAD-RP50/60/71/125EA PEAD-RP50/60/71/125EA.UK HWE05210 PEAD-RP100EA2 PEAD-RP100EA2.UK PEAD-RP60/71/100GA PEAD-RP60/71/100GA.UK HWE05060 1-2. TECHNICAL DATABOOK Manual No. OCS11...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION 2-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. 2-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. In case of using the existing pipes for R22, be careful with If other refrigerant (R22 etc.) is used, chlorine in refrige- the followings.
  • Page 4 Unit Gravimeter [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. Tool name Specifications Gauge manifold ·Only for R410A ·Use the existing fitting specifications . (UNF1/2) ·Use high-tension side pressure of 5.3MPa·G or over. Charge hose ·Only for R410A ·Use pressure performance of 5.09MPa·G or over.

  • Page 5: Precautions When Reusing Existing R22 Refrigerant Pipes

    2-3. 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-HRP71/100VHA PUHZ-HRP100/125YHA HIGH HEATING CAPACITY Performance (kW) Industry-first flash injection circuit is equipped, which enables to 30%UP about keep the equal capacity with the rating even when outside tem- HRP125 perature is -15 . HRP100 HRP71 Outdoor W.B. temp. HIGH SPEED HEATING START UP When stabled, The performance of heating start up is improved.

  • Page 8: Specifications

    SPECIFICATIONS PUHZ-HRP71VHA PUHZ-HRP100VHA Service Ref. Cooling Heating Cooling Heating Mode Power supply (phase, cycle, voltage) Single 50Hz, 230V Max. current Munsell 3Y 7.8/1.1 External finish Refrigerant control Linear Expansion Valve Hermetic Compressor Model ANB33FJCMT Motor output Inverter Starter type Protection devices...

  • Page 9: Data

    DATA 5-1. REFILLING REFRIGERANT CHARGE (R410A : kg) Piping length (one way) Factory Service Ref. charged PUHZ-HRP71VHA PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA For pipe longer than 30m, additional charge is required. 5-2. COMPRESSOR TECHNICAL DATA (at 20 ) PUHZ-HRP71VHA PUHZ-HRP100YHA Serice Ref.

  • Page 10: Noise Criterion Curves

    5-3. NOISE CRITERION CURVES PUHZ-HRP71VHA SPL(dB) MODE LINE COOLING PUHZ-HRP100VHA HEATING PUHZ-HRP100YHA PUHZ-HRP125YHA NC-70 NC-60 NC-50 NC-40 NC-30 APPROXIMATE THRESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz MICROPHONE UNIT 1.5m GROUND...

  • Page 11: Standard Operation Data

    1 , 50 1 , 50 Voltage Current 1.55 1.55 2.62 2.62 2.62 2.62 PUHZ-HRP100VHA Outdoor unit PUHZ-HRP125YHA PUHZ-HRP71VHA PUHZ-HRP100YHA Phase , Hz 1 , 50 1/3 , 50 3 , 50 Voltage 230/400 Current 8.09 8.94 11.10/3.69 11.28/3.74 4.92 4.91...

  • Page 12: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUHZ-HRP71VHA Unit : mm PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA...

  • Page 13: Wiring Diagram

    WIRING DIAGRAM PUHZ-HRP71VHA PUHZ-HRP100VHA [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor> P.B. Power Circuit Board Switch<Model Select> 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...
  • Page 14 PUHZ-HRP100YHA PUHZ-HRP125YHA [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 Adress> MF1, MF2 Fan Motor TB-P2...

  • Page 15: Wiring Specifications

    WIRING SPECIFICATIONS 8-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model HRP71, 100V HRP100, 125Y Outdoor unit power supply ~/N (single), 50 Hz, 3N ~ (3phase), 50 Hz, 230 V 400 V Outdoor unit input capacity 32 A 16 A Main switch (Breaker) Outdoor unit power supply Min.

  • Page 16: Separate Indoor Unit/ Outdoor Unit Power Supplies

    8-2. SEPARATE INDOOR UNIT/ OUTDOOR UNIT POWER SUPPLIES The following connection patterns are available. The outdoor unit power supply patterns vary on models. 1:1 System <For models without heater> Outdoor unit power supply 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 17 8-3. 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 18: M-Net Wiring Method

    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 19 M-NET wiring (1) Use 2-core x 1.25mm shield wire for electric wires. M-NET terminal (Excluding the case connecting to system controller.) Ground block wire (2) Connect the wire to the M-NET terminal block. Connect one core of the 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 20: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PUHZ-HRP71VHA PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA Thermistor TH7 (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) (Outdoor pipe) Charge plug Muffler...
  • Page 21 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 22: 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 23 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 24 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 Turn on the main power to the unit. TEST RUN Press the button twice continuously.

  • Page 25: 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 26: 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 27 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 28 • 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 29: Self-Diagnosis Action Table

    10-4. 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 Case Judgment and action Error Code No voltage is supplied to termi- Check following items.
  • Page 30 Error Code Abnormal point and detection method Case Judgment and action 2 connector open Disconnection or contact failure Check connection of connector(63H,63L) on 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 31 <Abnormalities detected while unit is operating> <Abnormalities detected while unit is operating> Abnormal point and detection method Judgment and action Error Code Case High pressure (High-pressure switch Short cycle of indoor unit ~ Check indoor unit and repair defectives. 63H worked) Clogged filter of indoor unit Abnormal if high-pressure switch 63H Decreased airflow caused by...
  • Page 32 Abnormal point and detection method Judgment and action Error Code Case Open/short of outdoor unit thermistors Disconnection or contact failure Check connection of connector (TH3, TH32, (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 33 Abnormal point and detection method Judgment and action Error Code Case Outdoor fan motor Failure in the operation of Check or replace the DC fan motor. The outdoor fan motor is considered to be the DC fan motor abnormal if the rotational frequency of fan Failure in the outdoor circuit Check the voltage of the outdoor circuit motor is abnormal when detected during...
  • Page 34 Abnormal point and detection method Judgment and action Error Code Case Low pressure (63L worked) Stop valve of outdoor unit is Check stop valve. Abnormal if 63L is worked (under closed during operation. -0.03MPa) during compressor operation. Disconnection or loose con- Turn the power off and on again to check 63L: Low-pressure switch nection of connector (63L) on...
  • Page 35 Error Code Abnormal point and detection method Judgment and action Case Remote controller control board Defective remote controller Replace remote controller. Abnormal if data cannot be read nor- mally from the nonvolatile memory of the remote controller control board. (Error code: E1) Abnormal if the clock function of remote controller cannot be operated normally.
  • Page 36 Abnormal point and detection method Judgment and action Error Code Case Pipe temperature Slight temperature difference Check pipe <liquid or condenser / evapo- <Cooling mode> between indoor room rator> temperature with room temperature Detected as abnormal when the pipe tem- temperature and pipe <liquid display on remote controller and outdoor perature is not in the cooling range 3 min-...
  • Page 37 Error Code Abnormal point and detection method Case Judgment and action Communication error with communica- Data of transmission proces- Turn off the power supply of outdoor unit, tion processor sor or unit processor is not indoor unit and FRESH MASTER or LOSSNAY Defective communication between unit transmitted normally because at the same time for 2 minutes or more, and...
  • Page 38 From the previous page. Error Code Abnormal point and detection method Case Judgment and action 4. If displayed address or attribute is During group operation with Same as mentioned in “A7” of the previous indoor unit of multi-refrigerant page. remote controller, indoor unit detects system, if indoor unit transmit abnormality when indoor unit transmits signal to remote controller...

  • Page 39: Troubleshooting By Inferior Phenomena

    Error Code Abnormal point and detection method Case Judgment and action M-NET NO RESPONSE Transmitting condition is Check transmission waveform or noise on Abnormal if a message was transmitted repeated fault because of transmission wire. noise and the like. and there were reply (ACK) that message Turn off the power supply of outdoor unit Extension of transmission wire was received, but response command...
  • Page 40 Phenomena Factor Countermeasure 4. Even controlling by the wireless The pair number settings of the wireless remote 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 41 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 42: 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 43 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 44 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 45 • 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 46 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 47 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 48 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 49 10-6. HOW TO CHECK THE PARTS PUHZ-HRP71VHA PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA Check points Parts name Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. <Outdoor pipe> (At the ambient temperature 10 ~30 ) Thermistor (TH4) Normal Abnormal <Discharge>...
  • Page 50 Check method of DC fan motor (fan motor / outdoor controller circuit board) Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Give attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit board and fan motor.) Self check...
  • Page 51 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> (TH32) • Thermistor <Outdoor pipe> (TH33) Thermistor R0 = 15k ± 3% B constant = 3480 ±...

  • Page 52: 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 indoor controller board and the linear expansion valve>...
  • Page 53 (4) How to attach and detach the coil of linear expansion valve <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Main body Stopper Coil Lead wire <How to detach the coil> Hold the lower part of the main body (shown as A) firmly so that the main body does not move and detach the coil by pulling it upward.

  • Page 54: Emergency Operation

    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 55 (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 56 10-9. TEST POINT DIAGRAM <CAUTION> TEST POINT is high voltage. Outdoor controller circuit board PUHZ-HRP71VHA PUHZ-HRP100VHA PUHZ-HRP100YHA PUHZ-HRP125YHA Forced defrost, detect history record reset, Demand control setting CN51 refrigerant address External signal output • Compressor operat- ing signal • Abnormal signal...
  • Page 57 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))

  • Page 58: Puhz-Hrp125Yha

    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 59 Outdoor power circuit board Brief Check of POWER MODULE 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.). If they are short-circuited, it means that they are broken.
  • Page 60 Brief Check of POWER MODULE 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 61 Outdoor converter circuit board PUHZ-HRP100YHA PUHZ-HRP125YHA 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 (TB-L1, L2, L3)
  • Page 62 Active filter module PUHZ-HRP71VHA PUHZ-HRP100VHA Connect to the outdoor power circuit board(TABP2) L1, L2 Connect to the DCL(Reactor) Non-connect Lower side Upper side Non-connect Connect to the outdoor power circuit board (TABP1) – Connect to the outdoor power Connect to the outdoor power...

  • Page 63: Function Of Switches, Connectors And Jumpers

    10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches Type Action by the switch operation Switch Function Effective timing 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 64 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 65 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 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 Error Outdoor controller board Detailed Contents Inspection method reference code LED1 (Green) LED2 (Red) page Check if stop valves are open. 3 blinking 1 blinking Abnormality of shell thermostat P.31 Check if connectors (TH4, 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 error code by controlling DIP SW2 on “A-Control Service Tool”. Operation indicator SW2 : Indicator change of self diagnosis SW2 setting...
  • Page 69 Explanation for display Unit SW2 setting Display detail 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 70 Explanation for display Unit SW2 setting Display detail 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 71 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 72 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) (When the temperature is 0 or less, “–” and -39~88 temperature are displayed by turns.) 2 3 4 5 6 Outdoor outside temperature (TH7) -39~88...
  • Page 73 Explanation for display Unit SW2 setting Display detail 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 74 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 75 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.) (Example) When 150°C; Cooling = TH4-TH6 Heating = TH4-TH5 0.5 secs.
  • Page 76 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 77: Function Setting

    FUNCTION SETTING 11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1. (1) Functions available when setting the unit number to 00 (Select 00 referring to setting the indoor unit number.) 1 The functions below are available only when the wired remote controller is used.
  • 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 Set the indoor unit number of Operating Procedure.
  • Page 79 11-1-1. 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 80 [Operating Procedure] Check the setting items provided by function selection. If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps , fill in the "Check" column in Table 1, then change them as necessary. For initial settings, refer to the indoor unit's installation manual. Switch off the remote controller.
  • 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 11-2. 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 83 [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 84: Monitoring The Operation Data By The Remote Controller

    MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 12-1. 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 85 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 –...
  • Page 86 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. Compressor-Frequency control state Refer to 12-2-1.Detail Contents in Request Code. – Outdoor unit-Fan control state Refer to 12-2-1.Detail Contents in Request Code.
  • Page 87 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 88 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 89 12-2-1. 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 90 [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 91 [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 92 [Outdoor unit switch setting display (SW1 to SW10, except SW3)] Request codes: 73 to 82 0: Swich OFF 1: Swich ON 0: Swich OFF 1: Swich ON SW1, SW2, SW6, SW7 Data display Data display 00 00 00 00 00 01 00 01 00 02 00 02...
  • Page 93 [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-RP•BA SEZ-KA•VA SLZ-KA•VA(L) PCA-RP•HA PKA-RP•GAL, PKH-P•GALH PLA-RP•...

  • Page 94: 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 95 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 96 13-2. GUIDE FOR OPERATION CONDITION Inspection item Result Check Points Breaker Good Retightened Enter the temperature differences between into Terminal block Outdoor Unit Good Retightened the graph given below. Indoor Unit Good Retightened Operation state is determined according to the plotted areas on (Insulation resistance) the graph.

  • Page 97: Initial Settings For Refrigerant Leakage Detection Function

    13-3. 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 98 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 99: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUHZ-HRP71VHA PUHZ-HRP100VHA OPERATING PROCEDURE PHOTOS & ILLUSTRATION Figure 1 1. Removing the service panel and top panel Top panel fixing screws Top panel (1) Remove 3 service panel fixing screws (5 10) and slide the hook on the right downward to remove the service Service panel panel.
  • Page 100 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.) Heat (2) Remove the top panel. (See figure 1.) exchanger (3) Disconnect the connectors TH7/6 (red) on the controller circuit board in the electrical parts box.
  • Page 101 OPERATING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), and linear expansion valve coil (LEV-A, LEV-B, LEV-C) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) [Removing the 4-way valve coil] (3) Remove 4-way valve coil fixing screw (M4 (4) Remove the 4-way valve coil by sliding the coil toward you.
  • Page 102 OPERATING PROCEDURE PHOTOS 11. Removing bypass valve coil (SV) and bypass valve Photo 10 Thermistor Bypass valve (1) Remove the service panel. (See figure 1.) <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 10) in the rear of the unit and remove the right side panel.
  • Page 103 OPERATING PROCEDURE PHOTOS 13. 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 104 PUHZ-HRP100YHA PUHZ-HRP125YHA OPERATING PROCEDURE PHOTOS & ILLUSTRATION 1. Removing the service panel and top panel Figure 1 Top panel fixing screws Top panel (1) Remove 3 service panel fixing screws (5 10) and slide the hook on the right downward to remove the service Service panel panel.
  • Page 105 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 4. Disassembling the electrical parts box (1) Disconnect all the connectors on the controller circuit Electrical board. Photo 4 parts box (2) Remove the 3 screws, screw , that fix the plate equipped with the outdoor controller circuit board, and the electrical parts box, screw from the front and the screw...
  • Page 106 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 107 OPERATING PROCEDURE PHOTOS 8. Removing the 4-way valve coil (21S4), and linear expan- sion valve coil (LEV-A, LEV-B, LEV-C) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) [Removing the 4-way valve coil] (3) Remove 4-way valve solenoid coil fixing screw (M4 (4) Remove the 4-way valve coil by sliding the coil toward you.
  • Page 108 OPERATING PROCEDURE PHOTOS Photo 15 12. Removing bypass valve coil (SV) and bypass valve (1) Remove the service panel. (See figure 1.) Thermistor (2) Remove the top panel. (See figure 1.) Bypass valve <Outdoor pipe> coil fixing screw (3) Remove 3 right side panel fixing screws (5 10) in the Replace filter (TH33)
  • Page 109 OPERATING PROCEDURE PHOTOS 13. 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 110 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN New publication, effective Oct. 2007 Copyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Specifications subject to change without notice Distributed in Oct. 2007 No.OCH425 PDF 8 Made in Japan...

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