Mitsubishi PUHZ-SP100VHA Service Manual
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Mitsubishi PUHZ-SP100VHA Service Manual

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

Outdoor unit
[Model Name]
PUHZ-SP100VHA
PUHZ-SP125VHA
PUHZ-SP140VHA
PUHZ-SP100YHA
PUHZ-SP125YHA
PUHZ-SP140YHA
PUHZ-SP100VHA.UK
PUHZ-SP100YHA.UK
R410A
[Service Ref.]
PUHZ-SP100VHA.UK
PUHZ-SP125VHA.UK
PUHZ-SP140VHA.UK
PUHZ-SP100YHA.UK
PUHZ-SP125YHA.UK
PUHZ-SP140YHA.UK
CONTENTS
10. TROUBLESHOOTING .................................. 24
11. FUNCTION SETTING ................................... 81
14. DISASSEMBLY PROCEDURE ................... 102
REVISED EDITION-A
Revision:
Modified some descriptions
•
in "8-1. FIELD ELECTRICAL
WIRING" and "8-2. SEPARATE
INDOOR UNIT/OUTDOOR
UNIT POWER SUPPLIES" in
REVISED EDITION-A.
• Some other descriptions have
been also modified.
• Please void OCH566.
Notes:
• This manual describes service
data of the indoor units only.
• RoHS compliant products have
<G> mark on the spec name
plate.
1. REFERENCE MANUAL ................................. 2
2. SAFETY PRECAUTION ................................. 2
3. FEATURES ..................................................... 6
4. SPECIFICATIONS .......................................... 7
5. DATA ............................................................... 9
6. OUTLINES AND DIMENSIONS ................... 12
7. WIRING DIAGRAM ...................................... 14
8. WIRING SPECIFICATIONS .......................... 17
PARTS CATALOG (OCB566)
January 2015
No. OCH566

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Summary of Contents for Mitsubishi PUHZ-SP100VHA

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS January 2015 No. OCH566 SERVICE MANUAL REVISED EDITION-A R410A Outdoor unit [Service Ref.] [Model Name] Revision: PUHZ-SP100VHA.UK PUHZ-SP100VHA Modified some descriptions • in "8-1. FIELD ELECTRICAL WIRING" and "8-2. SEPARATE PUHZ-SP125VHA.UK PUHZ-SP125VHA INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES" in REVISED EDITION-A.

  • Page 2: Reference Manual

    REFERENCE MANUAL INDOOR UNIT’S SERVICE MANUAL Model Name Service Ref. Service Manual No. OCH565 PLA-SP71/100/125/140BA PLA-SP71/100/125/140BA.UK OCB565 ― PEAD-SP100/125/140JA(L) PEAD-SP100/125/140JA(L).UK BWE01408 SAFETY PRECAUTION 2-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. Preparation before the repair service. •...
  • Page 3 2-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use a vacuum pump with a reverse flow check Use new refrigerant pipes. valve. In case of using the existing pipes for R22, be careful with Vacuum pump oil may flow back into refrigerant cycle and the following: that can cause deterioration of refrigerant oil, etc.
  • 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 Cautions for refrigerant piping work New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore, as the working pressure of R410A is 1.6 times higher than that of R22, their sizes of flared sections and flare nuts are different.

  • Page 6: Features

    FEATURES PUHZ-SP100VHA.UK PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK PUHZ-SP100YHA.UK PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT. (20 m (PUHZ-SP100), 30 m (PUHZ-SP125/140)) The refrigerant circuit with LEV (Linear Expansion Valve) and Accumulator always control the optimal refrigerant level regardless of the length (20 or 30 m maximum and 5 m minimum) of piping.

  • Page 7: Specifications

    SPECIFICATIONS Service Ref. PUHZ-SP100VHA.UK Cooling Heating Mode Power supply (phase, cycle, voltage) Single, 50Hz, 230V Running current 13.36 15.02 Max. current External finish Munsell 3Y 7.8/1.1 Linear Expansion Valve Refrigerant control Compressor Hermetic TNB220FLHMT Model Motor output Inverter Starter type...
  • Page 8 Service Ref. PUHZ-SP100YHA.UK Heating Mode Cooling Power supply (phase, cycle, voltage) 3phase, 50Hz, 400V Running current 4.78 5.37 Max. current Munsell 3Y 7.8/1.1 External finish Refrigerant control Linear Expansion Valve Compressor Hermetic Model TNB220FLCMT Motor output Inverter Starter type Protection devices HP switch Comp.

  • Page 9: Data

    5-1. REFILLING REFRIGERANT CHARGE (R410A : kg) Piping length (one way) Initial Service Ref. charged 20 m 30 m 40 m 10 m PUHZ-SP100VHA.UK — PUHZ-SP100YHA.UK PUHZ-SP125VHA.UK PUHZ-SP125YHA.UK PUHZ-SP140VHA.UK PUHZ-SP140YHA.UK Additional charge is required for pipes longer than 20 or 30m.

  • Page 10: Noise Criterion Curves

    5-3. NOISE CRITERION CURVES PUHZ-SP100VHA.UK MODE SPL(dB) LINE PUHZ-SP100YHA.UK COOLING MICROPHONE HEATING UNIT 1.5m NC-70 NC-60 GROUND NC-50 NC-40 NC-30 APPROXIMATE THRESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK SPL(dB) MODE...
  • Page 11 0.13 0.15 0.14 0.16 0.15 0.94 0.87 1.00 0.94 1.07 1.00 Amperes PUHZ-SP100VHA PUHZ-SP125VHA PUHZ-SP140VHA Outdoor unit PUHZ-SP100YHA PUHZ-SP125YHA PUHZ-SP140YHA Phase , Hz 1 / 3, 50 1 / 3, 50 1 / 3 , 50 230 / 400 Volts...

  • Page 12: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUHZ-SP100VHA.UK PUHZ-SP100YHA.UK Unit : mm OCH566A...
  • Page 13 PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK Unit : mm PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK OCH566A...

  • Page 14: Wiring Diagram

    WIRING DIAGRAM PUHZ-SP100VHA.UK PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block <Power Supply, Indoor/Outdoor> P.B. Switch <Function Switch> Power Circuit Board Motor for Compressor U/V/W Connection Terminal <U/V/W-Phase> Switch <Pump Down> MF1, MF2 Fan Motor Connection Terminal <L-Phase>...
  • Page 15 PUHZ-SP100YHA.UK SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block <Power Supply> Rush Current Protect Resistor Switch <Test Operation> Terminal Block <Indoor/Outdoor> CY1, CY2 Capacitor Switch <Function Switch, Model Select> Motor for Compressor P.B. Power Circuit Board Switch <Model Select> Fan Motor TB-U/V/W Connection Terminal <U/V/W-Phase>...
  • Page 16 PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply > CY1,CY2 Capacitor Switch<Function Switch, Model Select> Terminal Block<Indoor/Outdoor > P.B. Power Circuit Board Switch<Model Select> Motor for Compressor TB-U/V/W Connection Terminal<U/V/W-Phase> Switch<Function Switch> MF1, MF2 Fan Motor TB-L1/L2/L3 Connection Terminal<L1/L2/L3-Power Supply>...

  • Page 17: Wiring Specifications

    WIRING SPECIFICATIONS 8-1. FIELD ELECTRICAL WIRING (power wiring specifications) Outdoor unit model SP100, 125V SP140V SP100/125/140Y Outdoor unit power supply ~/N (single), 50 Hz, ~/N (single), 50 Hz, 3N~ (3ph,4-wires), 230 V 230 V 50Hz, 400 V Outdoor unit input capacity 32 A 40 A 16 A...
  • Page 18 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> The optional indoor power supply terminal kit is required. A Outdoor unit power supply B Earth leakage breaker C Wiring circuit breaker or isolating switch D Outdoor unit...
  • Page 19 8-3. INDOOR – OUTDOOR CONNECTING CABLE The cable shall not be lighter than design 60245 IEC or 60227 IEC. The cable length may vary depending on the condition of installation, humidity or materials, etc. Wire size Cross section Number Polarity L(m) *5 of cable of wires...
  • Page 20 8-4. M-NET WIRING METHOD (Points to note) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication. Place them at intervals of more than 5 cm. Do not put them in the same conduit tube.
  • Page 21 M-NET wiring M-NET (1) Use 2-core × 1.25 mm² shield wire for electric wires. terminal Earth (Excluding the case connecting to system controller.) block wire (2) Connect the wire to the M-NET terminal block. Connect one core of the trans- mission wire (no-polarity) to A terminal and the other to B.

  • Page 22: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Unit : mm (inch) PUHZ-SP100VHA.UK PUHZ-SP100YHA.UK Refrigerant flow in cooling Refrigerant flow in heating Service High pressure port protect switch (check) Stop valve Outdoor heat exchanger 4-way valve (#50) Thermistor Refrigerant GAS pipe Strainer (TH6) 15.88mm([5/8) Thermistor...
  • Page 23 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 (lowpressure side) on the outdoor unit. 3 Close the liquid stop valve completely.

  • Page 24: Troubleshooting

    TROUBLESHOOTING 10-1. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Present and past check codes are logged, and they can be displayed on the wired remote controller and control board of out- door unit. Actions to be taken for service, which depends on whether or not the trouble is reoccurring in the field, are summa- rized in the table below.
  • Page 25 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 26: Error Information

    <Error information> When an error occurs, the following screen will appear. Check the error status, stop the operation, and consult your dealer. Check code, error unit, refrigerant address, unit model name, and serial Error information number will appear. Error code The model name and serial number will appear only if the information have Error unit Ref.
  • Page 27 <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 28 10-2-3. Test run for wired remote controller <PAC-YT52CRA> Before making a test run, refer to the “Test Run” section of the   indoor unit installation manual. When the A button and B button are pressed   simultaneously for 2 seconds or longer, test run is performed. Stop the test run by pressing the A button.
  • Page 29 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 30 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 31 10-3-3. Self-diagnosis <PAC-YT52CRA> Retrieve the error history of each unit using the Simple MA controller. Switch to the self-diagnosis mode. button are pressed for 5 seconds or longer, the figure shown below is When the A button and the displayed. Set the address or refrigerant address No.
  • Page 32 10-3-4. Remote Controller Check <PAC-YT52CRA> When the air conditioner cannot be controlled from the Simple MA controller, use this function to check the remote controller. 1 First, check the power mark. When normal voltage (DC12V) is not applied to the remote controller, the power mark goes off. When the power mark is off, check the remote controller wiring and the indoor unit.
  • Page 33 10-3-5. 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 34 • 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 s 0.5 s 0.5 s 0.5 s Approx.
  • Page 35 10-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is turned on> Note: Refer to indoor unit section for code P and code E. Judgment and action Check code Abnormal points and detection method Case 1 No voltage is supplied to terminal 1 Check following items.
  • Page 36 Abnormal points and detection method Case Judgment and action Check code 1 Contact failure or miswiring of 1 Check disconnection or looseness or polarity Indoor/outdoor unit connector of indoor/outdoor unit connecting wire of indoor/outdoor unit connecting miswiring, excessive number of units (4 indoor and outdoor units.
  • Page 37 <Abnormalities detected while unit is operating> Check code Abnormal points and detection method Judgment and action 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) Abnormal if high-pressure switch 63H 3 Decreased airflow caused by...
  • Page 38 Check code Abnormal points and detection method Judgment and action Case 1 Check connection of connector (TH32) on 1 Disconnection or contact failure Open/short circuit of discharge the outdoor controller circuit board. Check of connector (TH32) on the temperature thermistor (TH32) breaking of the lead wire for thermistor (TH32).
  • Page 39 Check code Abnormal point and detection method Case Judgment and action To find out the details about U9 error, turn ON SW2-1, 2-2, 2-3, 2-4, 2-5, 2-6 when U9 error occurs. Detailed To find out the detail history (latest) about U9 error, turn ON SW2-1, 2-2, 2-6. For more detail, refer to "10-10. codes FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS".
  • Page 40 From the previous page. Check code Abnormal points and detection method Judgment and action Case Detailed Not applicable for SP100, 125, Check for the switch settings for Model Select PFC error (Overvoltage/ codes 140VHA and SP100, 125, on the outdoor controller circuit board. Undervoltage/Overcurrent) •...
  • Page 41 Abnormal points and detection method Judgment and action Check code Case 1 Stop valve of outdoor unit is 1 Open stop valve. Compressor overcurrent interruption Abnormal if overcurrent DC bus or closed. compressor is detected after compressor 2 Decrease of power supply voltage 2 Check facility of power supply.
  • Page 42 Check code Abnormal points and detection method Judgment and action Case 1 Contact failure of indoor/ 1 Check disconnection or looseness of indoor/ Indoor/outdoor unit communication outdoor unit connecting wire outdoor unit connecting wire of indoor or error (Signal receiving error) 2 Defective communication circuit outdoor units.
  • Page 43 Abnormal points and detection method Judgment and action Check code Case 1 Abnormal operation of 4-way 1 When this error occurs, be sure to Abnormal refrigerant circuit During Cooling, Dry, or Auto Cooling valve replace the 4-way valve. operation, when the following are 2 Check refrigerant pipes for disconnection or 2 Disconnection of or leakage in regarded as failures when detected for...
  • Page 44 Check code Abnormal points and detection method Case Judgment and action Turn off the power supply of outdoor unit, 1 Data of transmission processor Communication error with or unit processor is not indoor unit and FRESH MASTER or LOSSNAY communication processor Defective communication between unit transmitted normally because at the same time for 2 minutes or more, and...
  • Page 45 From the previous page. Check code Abnormal points 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 system, if indoor unit transmit...
  • Page 46 Check code Abnormal points and detection method Case Judgment and action 1 Transmitting condition repeats 1 Check transmission wave form or noise on M-NET NO RESPONSE fault because of noise and the Abnormal if a message was transmitted transmission wire. like.
  • Page 47 Factor Phenomena 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 48 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 49 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller. 1 LED1 : LED2 : LED3 : Inspection method and Diagnosis flow Cause troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.
  • Page 50 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller. 2 LED1 : LED2 : LED3 : Inspection method and Diagnosis flow Cause troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit which is used to connect the indoor unit and the outdoor unit.
  • Page 51 LED display of the indoor controller board Symptoms: Nothing is displayed on the remote controller. 3 LED1 : LED2 : LED3 : — Inspection method and Diagnosis flow Cause troubleshooting Check the voltage of the terminal block (TB6) of the remote controller. •...
  • Page 52 • Before repair Frequent calling from customers Phone Calls From Customers How to Respond Note Unit does 1 The operating display of remote 1 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 53 Phone Calls From Customers How to Respond Note The room cannot be cooled or heated sufficiently. 1 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 54 Phone Calls From Customers How to Respond Note Something 3 Air blows out for a while after However, this control is also 3 This is not a malfunction. is wrong HEAT operation is stopped. The blower is operating just for cooling down the applied to the models which with the heated-up air conditioner.
  • Page 55 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 COOL: when pipes or piping joints are cooled, they unit.
  • Page 56 10-6. HOW TO CHECK THE PARTS PUHZ-SP100VHA.UK PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK PUHZ-SP100YHA.UK PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK Parts name Check points Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. (At the ambient temperature 10 to 30 :) <Liquid> Thermistor (TH6) Normal Abnormal <2-Phase Pipe>...
  • Page 57 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 58 10-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Liquid> (TH3) • Thermistor <2-Phase Pipe> (TH6) • Thermistor <Ambient> (TH7) Thermistor R0 = 15 k" ± 3% B constant = 3480 ± 2% =15exp{3480( 273+t – 273 )} 15 k"...
  • Page 59 Linear expansion valve (1) Operation summary of the linear expansion valve • Linear expansion valve open/close 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 60 (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 61: Emergency Operation

    10-8. EMERGENCY OPERATION (1) When the check codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency opera- tion switch (SWE) on indoor controller board to ON and short-circuiting the connector (CN31) on outdoor controller board.
  • Page 62 (5) Operation data during emergency operation During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation are set to the following values: Operation mode Operation data Remarks COOL HEAT Intake temperature (TH1) 20.5: Indoor liquid pipe temperature (TH2) Indoor 2-phase pipe temperature (TH5)
  • Page 63 <CAUTION> TEST POINT 1 is high voltage. 10-9. TEST POINT DIAGRAM Outdoor controller circuit board PUHZ-SP100VHA.UK PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK PUHZ-SP100YHA.UK PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK CN51 CNDM External signal output Forced defrost, 1 to 2: Input of low-level sound priority mode • Compressor operating signal...
  • Page 64 Outdoor noise filter circuit board PUHZ-SP100YHA.UK LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI-LI3/LI3-LI1 : 400 V AC input LI1-NI/LI2-NI/LI3-NI : 230 V AC input (Connect to the terminal block (TB1)) Connect to the earth Connect to the earth CNAC2 230 V AC (Connect to the outdoor controller circuit board (CNAC))
  • Page 65 Outdoor noise filter circuit board PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK LI1, LI2, LI3, NI POWER SUPPLY LI1-LI2/LI-LI3/LI3-LI1: 400 V AC input LI1-NI/LI2-NI/LI3-NI: 230 V AC input (Connect to the terminal block (TB1)) Connect to the earth CNAC1, CNAC2 230 V AC (Connect to the outdoor controller circuit board (CNAC)) Connect to the earth...
  • 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-SP100VHA.UK Measure the resistance in the following points (connectors, etc.). PUHZ-SP125VHA.UK If they are short-circuited, it means that they are broken.
  • Page 67 Outdoor power circuit board Brief Check of POWER MODULE Usually, they are in a state of being short-circuited if they are broken. PUHZ-SP100YHA.UK Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken. 1.
  • Page 68 Outdoor power circuit board Brief Check of POWER MODULE Usually, they are in a state of being short-circuited if they are broken. PUHZ-SP125YHA.UK Measure the resistance in the following points (connectors, etc.). If they PUHZ-SP140YHA.UK are short-circuited, it means that they are broken. 1.
  • Page 69 10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches Type Action by the switch operation Function Effective timing Switch switch When compressor is working Compulsory defrosting *1 Start Normal in heating operation. *2 Abnormal history clear Clear Normal off or operating 1 2 3 4 5 6 1 2 3 4 5 6...
  • Page 70 (2) Function of connectors and switches Connector Action by open/short operation Types Function Effective timing Switch Short Open Connector CN31 Start Emergency operation When power supply ON Normal ■ The black square ( ) indicates a switch position. SW6-1 MODEL SW5-6 SW6-2 SP100VHA...
  • 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 Check Detailed Contents Inspection method code reference LED1 (Green) LED2 (Red) page P.37 3 blinking 1 blinking 1 Check if stop valves are open. Abnormality of shell thermostat 2 Check if connectors (TH32, LEV-A) on outdoor controller board are not and discharging temperature (TH32) disconnected.
  • Page 73 <Outdoor unit operation monitor function> [When option part ‘A-Control Service Tool (PAC-SK52ST)’ is connected to outdoor controller board (CNM)] Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of check code by control- ling DIP SW2 on ‘A-Control Service Tool’.
  • Page 74 The black square (■) indicates a switch position. SW2 setting Display detail Explanation for display Unit Liquid temperature (TH3) −40 to 90 −40 to 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 Operation mode on error occurring Operation mode of when operation stops due to error is displayed by setting SW2 like below. Code (SW2) display 2 3 4 5 6 2 3 4 5 6 Liquid temperature (TH3) on error occur-...
  • Page 76 The black square (■) indicates a switch position. SW2 setting Display detail Explanation for display Unit 0 to 1 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 −39 to 88 Outdoor air temperature (TH7) (When the temperature is 0: or less, “-” and −39 to 88 temperature are displayed by turns.) 2 3 4 5 6 Outdoor heatsink temperature (TH8) −40 to 200...
  • Page 78 The black square (■) indicates a switch position. SW2 setting Display detail Explanation for display Unit 0 to 100 Capacity save (When the capacity is 100% hundreds digit, tens digit 0 to 100 and ones digit are displayed by turns.) When air conditioner is connected to (Example) When 100%;...
  • Page 79 The black square (■) indicates a switch position. SW2 setting Display detail Explanation for display Unit 0 to 480 LEV-A opening pulse on error occurring (When it is 100 pulse or more, hundreds digit, tens 0 to 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 to 255 Discharge super heat on error occurring (When the temperature is 100°C or more, hundreds digit, tens digit and ones digit are displayed by 0 to 255 turns.) (Example) When 150°C;...

  • Page 81: Function Setting

    FUNCTION SETTING 11-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set as necessary using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1. <Table 1>...
  • Page 82 (2) Functions available when setting the unit number to 01-03 or AL (07 in the case of wireless remote controller) • When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the indoor unit number of Operating Procedure.

  • Page 83: 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 84 <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 85: Function Selection

    11-1-2. Selecting functions using the wired remote controller <PAC-YT52CRA> <Function Selection> Make the following settings for Mr. SLIM if necessary. Set the functions of each indoor unit from the remote controller, as required. The functions of each indoor unit can be selected only from the remote controller.
  • Page 86 Refrigerant address and unit address No. registration Press the A A button. The refrigerant address and unit address No. are registered. After a while, the mode No. display “– –” flashes. Mode No. display When “ ” flashes at the room temperature display, the selected refrigerant address is not in the system. When “F”...
  • Page 87 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 88 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 89 <Menu structure of 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 Restriction Temp.
  • Page 90 <Main menu list of PAR-31MAA> Setting and display items Setting details Vane · Louver · Vent. (Lossnay) Use to set the vane angle. • Select a desired vane setting from five different settings. Use to turn ON / OFF the louver. •...

  • Page 91: Easy Maintenance Function

    EASY MAINTENANCE FUNCTION 12-1. SMOOTH MAINTENANCE 12-1-1. 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 function cannot be executed during test operation. Depending on the combination with the outdoor unit, this function may not be supported by some models. Select "Service"...

  • Page 92: 13 Monitoring The Operation Data By The Remote Controller

    13 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 13-1. HOW TO "MONITOR THE OPERATION DATA" Details on the operation data including each thermistor temperature and error history can be confirmed with PAR-31MAA. This function is not available for PAC-YT52CRA. Select "Service"...
  • 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) 0–50 Compressor-Accumulated operating time 0–9999...
  • 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 1 hour 0–9999 (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 – For indoor fan phase control Indoor fan output value "...
  • Page 97 13-2-1. Detail Contents in Request Code [Operation state] (Request code :"0") Relay output state Power currently Data display Display Compressor Four-way valve Solenoid valve supplied to compressor – – – – Relay output state Operation mode Operation mode Display Operation mode STOP •...
  • Page 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 1 Actuator output state 2...
  • 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-P•GAH 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, PLA-RP71/100/125BA2 SEZ-KA•VA SLZ-KA•VA(L) PCA-RP•HA PCA-RP•KA PKA-RP•GAL, PKH-P•GALH PLA-RP•...

  • Page 102: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUHZ-SP100VHA.UK PUHZ-SP100YHA.UK 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 × 12) and slide the hook on the right downward to remove the service panel.
  • Page 103 From the previous page. OPERATING PROCEDURE PHOTOS Photo 4 (PUHZ-SP100Y) Wire clip Electrical parts box fixing screws Terminal block (TB1) Terminal block (TB2) 4. Removing the thermistor <2-phase pipe> (TH6) Photo 5 (1) Remove the service panel. (See Figure 1) Thermistor <2-phase pipe>...
  • Page 104 OPERATING PROCEDURE PHOTOS Figure 2 (PUHZ-SP100VHA) 6. Removing the thermistor <Liquid> (TH3) and thermistor <Comp.surface> (TH32) (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Disconnect the connectors, TH3 (white) and TH32 (black) on the controller circuit board in the electrical parts box.
  • Page 105 11. Removing the reactor (DCL) Photo 10 (PUHZ-SP100VHA) (1) Remove the service panel. (See Figure 1) Reactor fixing screw (2) Remove the top panel. (See Figure 1) (3) Remove the electrical parts box.
  • Page 106 OPERATING PROCEDURE PHOTOS 12. Removing the compressor (MC) Photo 11 Electrical parts box (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the cover panel (front). (See Figure 2) (4) Remove the cover panel (rear).(See Figure 2) Controller circuit (5) Remove the electrical parts box.
  • Page 107 PUHZ-SP125VHA.UK PUHZ-SP140VHA.UK PUHZ-SP125YHA.UK PUHZ-SP140YHA.UK 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 × 12) and slide the hook on the right downward to remove the service Service panel panel.
  • Page 108 From the previous page. OPERATING PROCEDURE PHOTOS Photo 4 (PUHZ-SP125,140Y) Wire clip Electrical parts box fixing screws Terminal block (TB1) Terminal block (TB2) 4. Removing the thermistor <2-Phase Pipe> (TH6) Thermistor Photo 5 (1) Remove the service panel. (See Figure 1) <2-phase pipe>...
  • Page 109 OPERATING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), and LEV coil (LEV(A)) Photo 7 (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) LEV coil (LEV A) (3) Remove the electrical parts box. (Refer to procedure 3) [Removing the 4-way valve coil] Lead wire of high (4) Remove 4-way valve solenoid coil fixing screw (M5 ×...
  • Page 110 OPERATING PROCEDURE PHOTOS 10. Removing bypass valve coil (SV) and bypass valve Photo 8 (1) Remove the service panel. (See Figure 1) (2) Remove the valve bed. (Refer to procedure 8) (3) Remove the bypass valve coil fixing screw (M5 × 6). (4) Remove the bypass valve by sliding the coil upward.
  • Page 111 OPERATING PROCEDURE PHOTOS Controller circuit board 13. Removing the motor for compressor (MC) Photo 10 (C.B.) (1) Remove the service panel. (See Figure 1) (2) Remove the top panel. (See Figure 1) (3) Remove the cover panel (front).(See Figure 2) Electrical parts box (4) Remove the cover panel (rear).(See Figure 2)
  • Page 112 HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2014 MITSUBISHI ELECTRIC CORPORATION New publication, effective Jan. 2015 Distributed in Jan. 2015 No.OCH566 REVISED EDITION-A Specifications are subject to change without notice. Distributed in Jun. 2014 No.OCH566...

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