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Mitsubishi Mr.Slim PUHZ-SHW80VHA Service Manual
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Mitsubishi Mr.Slim PUHZ-SHW80VHA Service Manual

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

SERVICE MANUAL

R410A
Outdoor unit
[Model Name]
PUHZ-SHW80VHA
PUHZ-SHW112VHA
PUHZ-SHW112YHA
PUHZ-SHW140YHA
Salt proof model
PUHZ-SHW80VHA-BS
PUHZ-SHW112VHA-BS
PUHZ-SHW112YHA-BS
PUHZ-SHW140YHA-BS
[Service Ref.]
PUHZ-SHW80VHA
PUHZ-SHW80VHAR2.UK
PUHZ-SHW112VHA
PUHZ-SHW112VHAR2.UK
PUHZ-SHW112YHA
PUHZ-SHW112YHAR1
PUHZ-SHW112YHAR2.UK
PUHZ-SHW140YHA
PUHZ-SHW140YHAR1
PUHZ-SHW140YHAR2.UK
PUHZ-SHW80VHAR2-BS.UK
PUHZ-SHW112VHAR2-BS.UK
PUHZ-SHW112YHAR2-BS.UK
PUHZ-SHW140YHAR2-BS.UK
REVISED EDITION-B
Revision:
• Added
PUHZ-SHW80/112VHAR2(-BS).UK
and
PUHZ-SHW112/140YHAR2(-BS).UK
in REVISED EDITION-B.
• Some descriptions have been
modified.
• Please void OCH526 REVISED
EDITION-A.
Note:
• This manual describes service data
of the outdoor units only.
• 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. SPECIFICATIONS ········································ 7
5. DATA ····························································· 9
6. OUTLINES AND DIMENSIONS·················· 10
7. WIRING DIAGRAM ····································· 12
8. WIRING SPECIFICATIONS ························ 17
9. REFRIGERANT SYSTEM DIAGRAM ········ 18
10. TROUBLESHOOTING ································ 20
11. FUNCTION SETTING ································· 82
12. MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER ···· 95
13. EASY MAINTENANCE FUNCTION ········· 106
14. DISASSEMBLY PROCEDURE ················· 113
PARTS CATALOG (OCB526B)
December 2013
No.OCH526

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Summary of Contents for Mitsubishi Mr.Slim PUHZ-SHW80VHA

  • Page 1: Service Manual

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS December 2013 No.OCH526 REVISED EDITION-B SERVICE MANUAL R410A Outdoor unit Revision: [Model Name] [Service Ref.] • Added PUHZ-SHW80VHA PUHZ-SHW80VHA PUHZ-SHW80/112VHAR2(-BS).UK PUHZ-SHW80VHAR2.UK PUHZ-SHW112VHA PUHZ-SHW112/140YHAR2(-BS).UK PUHZ-SHW112VHA in REVISED EDITION-B. PUHZ-SHW112VHAR2.UK • Some descriptions have been PUHZ-SHW112YHA PUHZ-SHW112YHA modified.

  • Page 2: Technical Changes

    TECHNICAL CHANGES PUHZ-SHW80VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHA PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).UK • Controller circuit board (C.B.) has been changed. PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHA PUHZ-SHW140YHAR1 • Power circuit board (P.B.) has been changed. REFERENCE MANUAL INDOOR UNIT SERVICE MANUAL 2-1. FOR AIR TO WATER SYSTEM Model name Service ref.

  • 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 times higher than that of R22, their sizes of flared sections and flare nuts are different.

  • Page 7: Specifications

    SPECIFICATIONS Service Ref. PUHZ-SHW80VHA PUHZ-SHW112VHA Power supply (phase, cycle, voltage) Single 50 Hz, 230V Max. current 29.5 Munsell 3Y 7.8/1.1 External finish Linear Expansion Valve Refrigerant control Hermetic Compressor Model ANB33FJMMT Motor output Starter type Inverter Protection devices HP switch, LP switch Discharge thermo, Comp.
  • Page 8 Service Ref. PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK Single 50 Hz, 230V Power supply (phase, cycle, voltage) Max. current 29.5 External finish Munsell 3Y 7.8/1.1 Refrigerant control Linear Expansion Valve Compressor Hermetic ANB33FJRMT Model Motor output Starter type Inverter Protection devices HP switch, LP switch Discharge thermo, Comp.

  • Page 9: Noise Criterion Curves

    DATA 5-1. REFILLING REFRIGERANT CHARGE (R410A: kg) Piping length (one way) Factory Service Ref. charged 10 m 20 m 30 m 40 m 50 m 60 m 75 m PUHZ-SHW80VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHA PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHA PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).UK Additional charge is required for pipes longer than 10 m.

  • Page 10: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUHZ-SHW80VHA Unit: mm PUHZ-SHW112VHA PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 OCH526B...
  • Page 11 PUHZ-SHW80VHAR2(-BS).UK Unit: mm PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK OCH526B...

  • Page 12: Wiring Diagram

    WIRING DIAGRAM PUHZ-SHW80VHA PUHZ-SHW112VHA SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor> Reactor Switch<Test Operation> Motor for Compressor Main Smoothing Capacitor Switch<Function Switch, Model Select> MF1, MF2 Fan Motor CY1, CY2 Capacitor Switch<Model Select> 21S4 Solenoid Valve (Four-Way Valve) P .
  • Page 13 PUHZ-SHW112YHA PUHZ-SHW140YHA SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> Capacitor C. B. Controller Circuit Board Terminal Block<Indoor/Outdoor> Rush Current Protect Resistor Switch<Manual Defrost, Defect History, Motor for Compressor P. B. Power Circuit Board Record Reset, Refrigerant Address > MF1, MF2 Fan Motor TB-U/V/W...
  • Page 14 PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block <Power Supply> Capacitor Controller Circuit Board C. B. Terminal Block <Indoor/Outdoor> Rush Current Protect Resistor Switch < Manual Defrost, Defect History, Motor for Compressor P. B. Power Circuit Board < L1/L2/L3-Power Supply > Record Reset, Refrigerant Address >...
  • Page 15 PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block <Power Supply, Indoor/Outdoor> Reactor Switch <Test Operation> Motor for Compressor Main Smoothing Capacitor Switch <Function Switch, Model Select> MF1, MF2 Fan Motor CY1, CY2 Capacitor Switch <Model Select> Solenoid Valve (Four-Way Valve) 21S4 P .
  • Page 16 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block Power Supply Capacitor C. B. Controller Circuit Board Terminal Block Indoor/Outdoor Rush Current Protect Resistor Switch Manual Defrost, Defect History, Motor for Compressor P. B. Power Circuit Board L1/L2/L3-Power Supply Record Reset, Refrigerant Address MF1, MF2 Fan Motor...

  • Page 17: Wiring Specifications

    WIRING SPECIFICATIONS FIELD ELECTRICAL WIRING (power wiring specifications) SHW80V SHW112V SHW112, 140Y Outdoor unit model ~/N (single), ~/N (single), 3N~ (3 ph 4-wires), Outdoor unit power supply 50 Hz, 230 V 50 Hz, 230 V 50 Hz, 400 V Outdoor unit input capacity Main switch (Breaker) 32 A 40 A 16 A...

  • Page 18: Refrigerant System Diagram

    (with service port) Refrigerant flow in heating Symbol Parts name Detail COMP Compressor DC inverter scroll compressor (Mitsubishi Electric Corporation) H/P SW High pressure switch (63H) For protection (OFF: 4.15MPa) L/P SW Low pressure switch (63L) For protection (OFF: -0.03MPa)
  • Page 19 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 20: 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 21 10-2-2. Test run for wired remote controller <PAR-31MAA> 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 22: Error Information

    <Error information> When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer. Error 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 23 <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 24 10-2-3. Test run for wired remote controller <PAR-21MAA> 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 alternately. Wait until “PLEASE WAIT” disappears before using remote controller. 1.
  • Page 25 10-2-4. 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 26: How To Proceed "Self-Diagnosis

    10-3. HOW TO PROCEED "SELF-DIAGNOSIS" 10-3-1. Self-diagnosis <PAR-31MAA> 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. Self check With the F1 or F2 button, enter the refrigerant address, and press the button.
  • Page 27 10-3-2. Remote controller check <PAR-31MAA> 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" with the F1 or F2 button, and press button.
  • Page 28 10-3-3. Self-diagnosis <PAR-21MAA> 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 29 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 30 10-3-6. Self-diagnosis <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 31 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. 0.5 sec.

  • Page 32: 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 1 No voltage is supplied to terminal 1 Check following items.
  • Page 33 Error Code Abnormal point and detection method Case Judgment and action 2 connector open 1 Disconnection or contact failure 1 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 Refer to 10-9.
  • Page 34 <Abnormalities detected while unit is operating> Abnormal point and detection method Judgment and action Error Code Case 1 Short cycle of indoor unit High pressure (High pressure switch 1~6 Check indoor unit and repair defect. 63H operated) 2 Clogged filter of indoor unit 3 Decreased airflow caused by Abnormal if high pressure switch 63H dirt of indoor fan...
  • Page 35 Abnormal point and detection method Judgment and action Error Code Case Open/short of outdoor unit thermistors 1 Disconnection or contact failure 1 Check connection of connector (TH3, TH32, TH33, (TH3, TH32, TH33, TH6, TH7, and TH8) of connectors TH7/6) on the outdoor controller circuit board. Abnormal if open or short is detected Outdoor controller circuit board: Check connection of connector (CN3) on the...
  • Page 36 Abnormal point and detection method Judgment and action Error Code Case To find out the details about U9 error, turn ON SW2-1, 2-2, 2-3, 2-4, 2-5 and 2-6 when U9 error occurs. Detailed To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2 and 2-6. codes Refer to 10-10.
  • Page 37 From the previous page. Abnormal point and detection method Judgment and action Error Code Case PFC error (Overvoltage/ Not applicable for SHW80, Check for the switch settings for Model Select Detailed codes Undervoltage/Overcurrent) 112VHA and SHW112, 140YHA on the outdoor controller circuit board. •...
  • Page 38 Abnormal point and detection method Judgment and action Error Code Case 1 Stop valve of outdoor unit is 1 Open stop valve. Compressor overcurrent interruption closed. Abnormal if overcurrent DC bus or 2 Check facility of power supply. 2 Decrease of power supply compressor is detected after compressor voltage starts operating for 30 seconds.
  • Page 39 Error Code Abnormal point and detection method Judgment and action Case Remote controller transmission error (E3)/ signal receiving error (E5) 1 2 remote controller are set as 1 Set a remote controller to main, and the 1 Abnormal if remote controller could not “main.”...
  • Page 40 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) 63HS detects Tcond.
  • Page 41 <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 Address duplicate definition 1 There are 2 or more same Search the unit with same address as This error is displayed when transmission abnormality occurred.
  • Page 42 Error Code Abnormal point and detection method Case Judgment and action NO ACK signal Common factor that has no Always try the followings when the error 1. Transmitting side controller detects relation with abnormality source “A7” occurs. 1 The unit of former address abnormal if a message was transmitted but there is no reply (ACK) that a mes- does not exist as address...
  • Page 43 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 remote controller, indoor unit detects indoor unit of multi-refrigerant page.

  • Page 44: Troubleshooting Of Problems

    Error Code Abnormal point and detection method Case Judgment and action M-NET NO RESPONSE 1 Transmitting condition is 1 Check transmission waveform or noise on 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 45 Phenomena Factor Countermeasure 4. Even controlling by the wireless 1 The pair number settings of the wireless remote 1 Check the pair number settings. remote controller, no beep is heard controller and indoor controller board are and the unit does not start operating. mismatched.
  • Page 46 Phenomena Countermeasure ■ These sounds can be heard when refrigerant and/or water is (are) fl owing A fl owing water sound or occasional hissing sound is heard. in the indoor unit or refrigerant pipe, or when the refrigerant and/or water is (are) chugging.
  • 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 10-6. HOW TO CHECK THE PARTS PUHZ-SHW80VHA PUHZ-SHW112VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK Parts name Check points Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10 :-30 :) <Liquid> 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. (It causes trouble of the outdoor controller circuit board and fan motor.) Self check...
  • Page 57 <Thermistor feature chart> Low temperature thermistors • Thermistor <Liquid> (TH3) • Thermistor <2-phase pipe> (TH6) • Thermistor <Ambient> (TH7) • Thermistor <Suction> (TH32) • Thermistor <Ref. check> (TH33) Thermistor R0 = 15 k" ± 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

    10-8. EMERGENCY OPERATION (1) When the error codes shown below are displayed on outdoor unit or microprocessor 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 27 : 20.5 : Intake temperature (TH1) —...
  • Page 62 10-9. TEST POINT DIAGRAM <CAUTION> TEST POINT1 is high voltage. Outdoor controller circuit board PUHZ-SHW80VHA PUHZ-SHW112VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHAR2(-BS).UK PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK CNDM 1 to 2: Input of low-level sound priority mode Manual defrost, detect history record reset, 1 to 3: CN51 Function switch...
  • Page 63 Outdoor noise filter circuit board PUHZ-SHW112YHA PUHZ-SHW140YHA PUHZ-SHW112YHAR1 PUHZ-SHW140YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHAR2(-BS).UK LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI-LI3/LI3-LI1 : AC400V input LI1-NI/LI2-NI/LI3-NI : AC230V input (Connect to the terminal block (TB1)) Connect to the earth Connect to the earth CNAC2 AC230V (Connect to the outdoor controller...
  • Page 64 Outdoor power circuit board Brief Check of POWER MODULE • Usually, they are in a state of being short-circuited if they are bro- PUHZ-SHW80VHA ken.Measure the resistance in the following points (connectors, etc.). PUHZ-SHW112VHA If they are short-circuited, it means that they are broken. 1.
  • Page 65 Outdoor power circuit board Brief Check of POWER MODULE * Usually, they are in a state of being short-circuited if they are broken. PUHZ-SHW112YHA Measure the resistance in the following points (connectors, etc.). PUHZ-SHW140YHA If they are short-circuited, it means that they are broken. 1.
  • Page 66 Outdoor power circuit board Brief Check of POWER MODULE * Usually, they are in a state of being short-circuited if they are broken. PUHZ-SHW112YHAR1 Measure the resistance in the following points (connectors, etc.). PUHZ-SHW112YHAR2(-BS).UK If they are short-circuited, it means that they are broken. 1.
  • Page 67 Outdoor converter circuit board PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHA PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).UK 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-OU, L2-OU, L3-OU L1-A2, L2-A2, L3-A2 Connect to the outdoor power circuit board...

  • Page 68: Function Of Switches, Connectors And Jumpers

    10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches ■ The black square ( ) indicates a switch position. Type Action by the switch operation Switch Function Effective timing switch When compressor is working Forced defrost * Start Normal in heating operation.
  • Page 69 ■ The black square ( ) indicates a switch position. 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 * No function —...
  • Page 70 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 71 <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 72 Indication Error Outdoor controller board Detailed Error Contents Inspection method reference code* LED1 (Green) LED2 (Red) page 1Check if stop valves are open. 3 blinking 1 blinking Abnormality of discharging P.34 2Check if connectors (TH4, LEV-A, and LEV-B) on outdoor controller temperature (TH4) and Comp.
  • Page 73 <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 74 ■ The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit 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:;...
  • Page 75 ■ The black square ( ) indicates a switch position. 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:;...
  • Page 76 ■ The black square ( ) indicates a switch position. 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.
  • Page 77 ■ The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit Indoor setting temperature 17~30 17~30 2 3 4 5 6 Pressure saturation temperature (T -39~88 63HS -39~88 (When the temperature is 0: or less, “–” and temperature are displayed by turns.) 2 3 4 5 6 Outdoor outside temperature (TH7)
  • Page 78 ■ The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit 180~370 DC bus voltage 180~370 (When it is 100V or more, hundreds digit, tens digit and ones digit are displayed by turns.) 2 3 4 5 6 0~255 Capacity save...
  • Page 79 ■ The black square ( ) indicates a switch position. 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;...
  • Page 80 ■ The black square ( ) indicates a switch position. Explanation for display Unit SW2 setting Display detail 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-T...
  • Page 81 ■ The black square ( ) indicates a switch position. SW2 setting Display detail Explanation for display Unit -39~88 Outdoor suction pipe temperature (TH32) -39~88 (When the temperature is 0°C or less, “–” and temperature are displayed by turns.) (Example) When –15°C; 0.5 secs.

  • Page 82: 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. <Table 1>...
  • Page 83 (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 84: Service Menu

    11-1-1. Selecting functions using the wired remote controller <PAR-31MAA> <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 buttom and select "Service" to make the Service maintenance setting.
  • Page 85 <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 86 11-1-2. Selecting functions using the wired remote controller <PAR-21MAA> 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 1 to 0 . Setting number Refrigerant address Unit number...
  • Page 87 [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 88 11-1-3. 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 89 11-2. FUNCTION SELECTION OF REMOTE CONTROLLER 11-2-1. PAR-31MAA 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 90 <Menu structure of PAR-30MAA/PAR-31MAA> 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 OU silent mode Restriction...
  • Page 91 <Main menu list of PAR-30MAA/PAR-31MAA> Setting and display items Setting details Vane · Louver · Vent. Use to set the vane angle. (Lossnay) • Select a desired vane setting from fi ve different settings. Use to turn ON / OFF the louver. •...
  • Page 92 Setting and display items Setting details Initial setting Display Make the settings for the remote controller related items as necessary. details Clock: The factory settings are "Yes" and "24h" format. Temperature: Set either Celsius (°C) or Fahrenheit (°F). Room temp. : Set Show or Hide. Auto mode: Set the Auto mode display or Only Auto display.
  • Page 93 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 94 [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 95: 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-31MAA Details on the operation data including each thermistor temperature and error history can be confi rmed with the remote controller. Select "Service" from the Main menu, and press the button.
  • Page 96 12-1-2. PAR-21MAA • 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 TEST (2) Press the button for 3 seconds to switch to [Maintenance monitor].
  • Page 97 12-2. REQUEST CODE LIST Note: 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 98 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 99 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 100 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 101 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...
  • Page 102 [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 103 [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 104 [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...
  • Page 105 [Indoor unit – Model setting information] (Request code "162 ") Data display Display Model setting state Display Model setting state See the table on the right. [Indoor unit – Capacity setting information] (Request code "163" ) Data display Display Capacity setting state Display Capacity setting state See the table on the right.

  • Page 106: Easy Maintenance Function

    EASY MAINTENANCE FUNCTION 13-1. SMOOTH MAINTENANCE 13-1-1. PAR-31MAA 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. Select "Service"...
  • Page 107 13-1-2. PAR-21MAA ● 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: ●...
  • Page 108 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 109 13-3. 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) M"...

  • Page 110: Initial Settings For Refrigerant Leakage Detection Function

    INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION 13-4. 13-4-1. PAR-31MAA Refrigerant leakage is detected after a long time. To enable this function, the refrigerant volume must be saved (initial learning) after installation. Always operate this function in the following manner after installation. •...
  • Page 111 13-4-2. PAR-21MAA 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). Caution : Make sure to perform the "test run"...
  • Page 112 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 1~3 as when "Initial learning operation" for "Checking operation". 4Press CLOCK button and select the [GAS LEAK JUDGE] Refrigerant leakage Refrigerant leakage detection...

  • Page 113: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUHZ-SHW80VHA PUHZ-SHW80VHAR2(-BS).UK PUHZ-SHW112VHA PUHZ-SHW112VHAR2(-BS).UK OPERATING PROCEDURE PHOTOS & ILLUSTRATION Photo 1 Top panel fixing screws 1. Removing the service panel and top panel Top panel (1) Remove 3 service panel fixing screws (5 × 12) and slide the hook on the right downward to remove the service Service panel fixing screw panel.
  • Page 114 OPERATING PROCEDURE PHOTOS 4. Removing the thermistor <2-phase pipe> (TH6) and Photo 4-1 Thermistor <2-phase pipe> (TH6) thermistor <Ambient>(TH7) Control box Cable strap (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Disconnect the connectors TH7/6 (red) on the controller circuit board in the electrical parts box.
  • Page 115 PHOTOS OPERATING PROCEDURE 7. Removing the 4-way valve coil (21S4), and linear expansion Photo 7-1 valve coil (LEV-A, LEV-B, LEV-C) High pressure Linear expansion Linear expansion (1) Remove the service panel. (See Photo 1) switch (63H) valve coil (LEV-C) valve coil (LEV-A) (2) Remove the top panel.
  • Page 116 OPERATING PROCEDURE PHOTOS 11. Removing the reactor (DCL) and capacitor (CB) Photo 8 (1) Remove the service panel. (See Photo 1) Reactor Electrical parts box (2) Remove the top panel. (See Photo 1) (DCL) (3) Remove the electrical parts box. (See Photo 3) [Removing the reactor] (4) Remove 4 reactor fixing screws (4 ×...
  • Page 117 OPERATING PROCEDURE PHOTOS 13. Removing the power receiver Photo 10 Pipes of power receiver (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Remove the cover panel (front). (Refer to procedure 12) (4) Remove the cover panel (rear).
  • Page 118 PUHZ-SHW112YHA PUHZ-SHW112YHAR1 PUHZ-SHW112YHAR2(-BS).UK PUHZ-SHW140YHA PUHZ-SHW140YHAR1 PUHZ-SHW140YHAR2(-BS).UK OPERATING PROCEDURE PHOTOS & ILLUSTRATION Top panel fixing screws Photo 1 1. Removing the service panel and top panel Top panel (1) Remove 3 service panel fixing screws (5 × 12) and slide Service panel the hook on the right downward to remove the service fixing screw panel.
  • Page 119 OPERATING PROCEDURE PHOTOS & ILLUSTRATION 4. Disassembling the electrical parts box (1) Disconnect all the connectors on the controller circuit Electrical board. Photo 4-1 parts box (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 120 OPERATING PROCEDURE PHOTOS 5. Removing the thermistor <2-phase pipe> (TH6) and Photo 5-1 Thermistor <2-phase pipe> (TH6) thermistor <Ambient>(TH7) Control box Cable strap (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Disconnect the connectors TH7/6 (red) on the controller circuit board in the electrical parts box.
  • Page 121 PHOTOS OPERATING PROCEDURE 8. Removing the 4-way valve coil (21S4), and linear expansion Photo 8-1 valve coil (LEV-A, LEV-B, LEV-C) High pressure Linear expansion Linear expansion (1) Remove the service panel. (See Photo 1) switch (63H) valve coil (LEV-C) valve coil (LEV-A) (2) Remove the top panel.
  • Page 122 OPERATING PROCEDURE PHOTOS 12. Removing the reactors (ACL1, ACL2, ACL3) Photo 12-1 Electrical parts box (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) (3) Remove the 6 screws, that fix the front panel and remove the front panel.
  • Page 123 OPERATING PROCEDURE PHOTOS 13. Removing the compressor (MC) Photo 13 (1) Remove the service panel. (See Photo 1) (2) Remove the top panel. (See Photo 1) Separator Valve bed (3) Remove 2 cover panel (front) fixing screws (5 × 12) and remove the cover panel (front).
  • Page 124 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2012 MITSUBISHI ELECTRIC CORPORATION Distributed in Dec. 2013 No.OCH526 REVISED EDITION-B Distributed in Jul. 2013 No.OCH526 REVISED EDITION-A Distributed in Sep. 2012 No.OCH526 New publication, effective Dec. 2013 Made in Japan Specifications are subject to change without notice.

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