Mitsubishi Electric Mr.Slim PUZ-HA42NKA Service Manual
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Mitsubishi Electric Mr.Slim PUZ-HA42NKA Service Manual

Split-type, heat pump air conditioners r410a
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Table of Contents

SERVICE MANUAL
[Model Name]
PUZ-HA42NKA
R410A
[Service Ref.]
PUZ-HA42NKA
Note:
CONTENTS
1. REFERENCE MANUAL ·································· 2
2. SAFETY PRECAUTION ·································· 2
3. FEATURES ······················································ 6
4. SPECIFICATIONS ··········································· 7
5. DATA ································································ 8
6. OUTLINES AND DIMENSIONS ···················· 10
7. WIRING DIAGRAM ·········································11
8. WIRING SPECIFICATIONS ··························· 12
9. REFRIGERANT SYSTEM DIAGRAM ·············· 16
10. TROUBLESHOOTING ··································· 18
11. EASY MAINTENANCE FUNCTION··············· 71
12. FUNCTION SETTING ···································· 74
14. DISASSEMBLY PROCEDURE ······················ 92
PARTS CATALOG (OCB567)
August 2014
No. OCH567
-

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Summary of Contents for Mitsubishi Electric Mr.Slim PUZ-HA42NKA

  • Page 1: Table Of Contents

    August 2014 No. OCH567 SERVICE MANUAL R410A [Model Name] [Service Ref.] Note: PUZ-HA42NKA PUZ-HA42NKA CONTENTS 1. REFERENCE MANUAL ·································· 2 2. SAFETY PRECAUTION ·································· 2 3. FEATURES ······················································ 6 4. SPECIFICATIONS ··········································· 7 5. DATA ································································ 8 6. OUTLINES AND DIMENSIONS ···················· 10 7.

  • Page 2: Reference Manual

    REFERENCE MANUAL INDOOR UNIT SERVICE MANUAL SAFETY PRECAUTION 2-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected. Preparation before the repair service. Precautions during the repair service. OCH567...
  • 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 2-3. CAUTIONS FOR REFRIGERANT PIPING WORK Diagram below: Piping diameter and thickness Thickness : in [mm] Nominal Outside dimensions (in) diameter (mm) R410A 6.35 1/32 [0.8] 1/32 [0.8] 9.52 1/32 [0.8] 1/32 [0.8] 12.70 1/32 [0.8] 1/32 [0.8] 15.88 5/128 [1.0] 5/128 [1.0] —...

  • Page 6: Features

    FEATURES PUZ-HA42NKA HIGH HEATING CAPACITY Performance (Btu/h) 60%UP about 50,000 HA36 48,000 BTU/h 40,000 28,800 BTU/h -13°F -4°F 5°F 14°F 23°F 32°F [-25°C] [-20°C] [-15°C] [-10°C] [-5°C] [0°C] Outdoor W.B. temp. HIGH SPEED HEATING START UP When stabled, hot air of It doesn’t become when outside air temp.

  • Page 7: Specifications

    SPECIFICATIONS Service Ref. PUZ-HA42NKA Power supply Phase Single Cycle 60Hz Voltage 208/230V MOCP Breaker size External finish Munsell 3Y 7.8/1.1 Heat exchanger Plate fin coil Defrost method Reverse cycle Crankcase heater Compressor Hermetic Model ANB42FJTMT Motor output R.L.A. L.R.A. Starter type Inverter Fan(drive) o No.

  • Page 8: Data

    DATA 5-1. REFILLING REFRIGERANT CHARGE (R410A: oz, kg) Piping Length ( one way ) Factory Service Ref. 100 ft 110 ft 120 ft 130 ft 140 ft 150 ft 160 ft 165 ft 180 ft 200 ft 210 ft 230 ft 245 ft Charged 30 m...
  • Page 9 5-4. STANDARD OPERATION DATA Representative matching PLA-A42BA4 HEATING COOLING Mode 42,000 48,000 Total Capacity BTU/h 4,340 4,660 Input Indoor unit model PLA-A42BA4 Phase Single Cycle 60Hz Voltage 230V Current 1.00 A 0.94 A Outdoor unit model PUZ-HA42NKA Phase Single Cycle 60Hz Voltage 230V...

  • Page 10: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit: mm<inch> PUZ-HA42NKA OCH567...

  • Page 11: Wiring Diagram

    WIRING DIAGRAM PUZ-HA42NKA [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply> LEV-A, LEV-B, LEV-C Linear Expansion Valve Switch<Function Switch, Model Select> Terminal Block<Indoor/Outdoor> Reactor Switch<Model Select> Motor for Compressor CY1, CY2 Capacitor Switch<Function Switch> MF1, MF2 Fan Motor P .

  • Page 12: Wiring Specifications

    WIRING SPECIFICATIONS 8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT The following illustrations show available connection patterns. The outdoor unit power supply patterns vary on each model. 1:1 System Simultaneous twin system A Outdoor unit power supply B Wiring circuit breaker or isolating switch C Outdoor unit D Indoor unit/outdoor unit connecting cords E Remote controller...
  • Page 13 8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES The following illustrations show available connection patterns. The outdoor unit power supply patterns vary on models. 1:1 System The optional indoor power supply terminal kit is required. Outdoor unit power supply Wiring circuit breaker or isolating switch Outdoor unit Indoor unit/outdoor unit connecting cords Remote controller...
  • Page 14 8-3. INDOOR – OUTDOOR CONNECTING CABLE Wire No. o Size Outdoor power supply Max. 164 ft [50 m] Max. 262 ft [80 m] Max. 147 ft [45 m] 3 o AWG13 (polar) 3 o AWG13 (polar) and S3 separated 3 o AWG15 (polar) Indoor unit-Outdoor unit Note: The maximum cable length may vary depending on the condition of installation, humidity or materials, etc.
  • Page 15 M-NET wiring M-NET terminal Ground block wire Transmission Shield wire part 8-4-1. M-NET address setting <Setting example> M-NET Address No. SW11 ones Switching digit setting SW12 tens digit 8-4-2. Refrigerant address setting 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6...

  • Page 16: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PUZ-HA42NKA Unit: inch [mm] Thermistor TH7 P-sensor (Ambient) Heat exchanger Thermistor REV/N Ball valve Refrigerant (2-phase pipe) GAS pipe connection [5/8 [15.88] Strainer Charge plug Thermistor TH3 (High pressure) (Liquid) Charge plug Muffler H/P SW Distributor (Low pressure) L/P SW Thermistor TH32...
  • Page 17 9-1. REFRIGERANT COLLECTING (PUMP DOWN) Warning: When pumping down the refrigerant, stop the compressor before disconnecting the refrigerant pipes. pressure in the refrigeration cycle could become extremely high if air is drawn in, causing the pipes to burst, personal injury, etc. 9-2.

  • Page 18: Troubleshooting

    TROUBLESHOOTING 10-1. TROUBLESHOOTING <Check code displayed by self-diagnosis and actions to be taken for service (summary)> Unit conditions at service Check code Actions to be taken for service (summary) Judge what is wrong and take a corrective action according Displayed to “10-4.
  • Page 19 10-2-1. Test run for wired remote controller <PAR21-MAA> 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.
  • Page 20 10-2-2. Test run for wireless remote controller Test run [for IR wireless remote controller] " TEST COOL TEST RUN TEMP ON/OFF TEST RUN MODE COOL AUTO STOP MODE HEAT MODE AUTO START VANE CHECK LOUVER VANE TEST RUN RESET CLOCK Note: while following steps 2 to 7.
  • Page 21 10-3. HOW TO PROCEED "SELF-DIAGNOSIS" 10-3-1. When a problem occurs during operation <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. 1 [CHECK] and the refrigerant address are displayed on the temperature display, and the check code and unit number are displayed alternately as shown below.
  • Page 22 When the error history is reset, the display will look like the one shown below. Press the ON/OFF button twice within 3 seconds. The self-diagnosis However, if you fail to reset the error history, the error content will be displayed again. address or refrigerant address will blink.
  • Page 23 10-3-4. Malfunction-diagnosis method by IR wireless remote controller <In case of trouble during operation> < Malfunction-diagnosis method at maintenance service> [Procedure] Refrigerant address display CHECK CHECK display Temperature button ON/OFF TEMP ON/OFF button AUTO STOP AUTO START MODE VANE HOUR button CHECK LOUVER CHECK...
  • Page 24 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. Approx.
  • Page 25 10-4. SELF-DIAGNOSIS ACTION TABLE <Abnormalities detected when the power is turned on> Check Code Abnormal point and detection method Case Judgment and action — 63L connector open OCH567...
  • Page 26 Abnormal point and detection method Case Judgment and action Check Code 63H connector open 2 connector open Miswiring of indoor/outdoor unit connecting wire 4–6 Miswiring of indoor/outdoor unit connecting wire (converse wiring or dis- connection) 1–8 Start-up time over OCH567...
  • Page 27 <Abnormalities detected while unit is operating> <Abnormalities detected while unit is operating> Abnormal point and detection method Judgment and action Check Code Case High pressure (High-pressure switch 1–6 63H worked) 9–2 4–6 High discharging temperature High comp. surface temperature OCH567...
  • Page 28 Check Code Abnormal point and detection method Case Judgment and action Open/short circuit of outdoor unit temperature thermistor (TH4, TH34) Open/short of outdoor unit thermistors (TH3, TH32, TH6, TH7, and TH8) Temperature of heatsink Power module OCH567...
  • Page 29 Check Code Abnormal point and detection method Case Judgment and action Too low superheat due to low discharge temperature Outdoor fan motor Overvoltage error Undervoltage error Input current sensor error/ L1-phase open error OCH567...
  • Page 30 Check Code Abnormal point and detection method Case Judgment and action Abnormal power synchronous signal PFC error (Overvoltage/ Undervoltage/Overcurrent) PFC/IGBT error (Undervoltage) Compressor overcurrent interruption (When compressor locked) Current sensor error Overheat protection Abnormal pressure of 63HS OCH567...
  • Page 31 Abnormal point and detection method Case Judgment and action Check Code Abnormal low pressure (63L worked) 2–4 Compressor overcurrent interruption Remote controller transmission error(E0)/signal receiving error(E4) 1–3 Remote controller control board OCH567...
  • Page 32 Check Code Abnormal point and detection method Case Judgment and action Remote controller transmission error(E3)/signal receiving error(E5) 4–6 Indoor/outdoor unit communication error (Signal receiving error) 2–4 Indoor/outdoor unit communication 1–3 error (Transmitting error) Indoor/outdoor unit communication error (Signal receiving error) (Outdoor unit) 2–4 Indoor/outdoor unit communication...
  • Page 33 Check Code Abnormal point and detection method Case Judgment and action Non defined check code Serial communication error Freezing/overheating protection is working stage-a stage-b Tcond stage-c stage-d stage-e stage-f stage-g [ 9] [ 6] [ 2] [ 18] [ 17] [ 15] [ 14] [ 12]...
  • Page 34 Check Code Abnormal point and detection method Case Judgment and action 1–4 Pipe temperature Temperature display of indoor condenser/ Temperature display of indoor liquid pipe evaporator pipe Indoor 1 Indoor 1 Temperature display of indoor condenser/ Temperature display of indoor liquid pipe evaporator pipe Indoor 2 Indoor 2 A-Control Service Tool...
  • Page 35 <M-NET communication error> Check Code Abnormal point and detection method Case Judgment and action Address duplicate definition Hardware error of transmission processor BUS BUSY Communication error with communica- tion processor OCH567...
  • Page 36 Abnormal point and detection method Case Judgment and action Check Code NO ACK signal Always try the followings when the error “A7” occurs. 1–5 1–5 1–5 1–6 OCH567...
  • Page 37 Abnormal point and detection method Case Judgment and action Check Code Same as mentioned in “A7” of the previous page. OCH567...
  • Page 38 Check Code Abnormal point and detection method Case Judgment and action M-NET NO RESPONSE 10-5. TROUBLESHOOTING BY INFERIOR PHENOMENA Phenomena Factor Countermeasure OCH567...
  • Page 39 Phenomena Factor Countermeasure OCH567...
  • Page 40 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” “PLEASE WAIT”...
  • Page 41 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.
  • Page 42 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.
  • Page 43 controller board Symptoms: Nothing is displayed on the remote controller 3 LED1 : LED2 : LED3 : — Diagnosis flow Cause troubleshooting Check the voltage of the terminal block (TB6) of the indoor unit. 10 to 16 V DC? remote controller remote controller.
  • Page 44 Frequent calling from customers Phone Calls From Customers How to Respond Note 1 The operating display of remote 1 Check if power is supplied to air conditioner. Unit does not operate controller does not come on. Nothing appears on the display unless power is at all.
  • Page 45 Phone Calls From Customers How to Respond Note 1 Check the set temperature of remote controller. The room cannot be cooled or heated sufficiently. The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes. COOL: When the set temperature is lower than the room temperature.
  • Page 46 Phone Calls From Customers How to Respond Note 3 Air blows out for a while after 3 This is not a malfunction. Something However, this control is also 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 47 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 48 10-6. HOW TO CHECK THE PARTS PUZ-HA42NKA Parts name Check points Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. (Ambient temperature 50 to 86°F [10 to 30:]) Liquid pipe> Thermistor (TH4) Normal Abnormal <Discharge> 160 to 410k" Thermistor (TH6) TH34 <2-phase pipe>...
  • Page 49 Check method of DC fan motor (fan motor / outdoor controller circuit board) Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. board and fan motor.) (It causes trouble of the outdoor controller circuit Self check...
  • Page 50 10-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors -4 -14 32 50 68 86 104122 °F -20 -10 0 10 20 30 40 50 Temperature High temperature thermistor ° Temperature OCH567...
  • Page 51 (1) Operation summary of the linear expansion valve Outdoor controller board DC12V Gray Drive circuit Orange Yellow Black Connector LEV-A LEV-B LEV-C <Output pulse signal and the valve operation> Output Output (Phase) (2) Linear expansion valve operation Close Open 500 pulse Opening a valve all the way Pulse number...
  • Page 52 (3) How to attach and detach the coil of linear expansion valve Main body Stopper Coil Lead wire <How to detach the coil> <How to attach the coil> Be sure to attach the stopper. OCH567...
  • Page 53 10-8. EMERGENCY OPERATION Inspected content Check code Open/short of thermistor (TH3/TH6/TH7/TH32/TH8) Open of pressure sensor (T 63HS – Communication error other than outdoor unit (2) Check the following items and cautions for emergency operation (3) Emergency operation procedure Shorting pins CN31 Heating Cooling...
  • Page 54 (5) Operation data during emergency operation Operation mode Remarks Operation data COOL HEAT 81°F [27:] 69°F [20.5:] Intake temperature (TH1) 41°F [5:] Indoor fluid pipe temperature (TH2) 113°F [45:] 41°F [5:] Indoor 2-phase pipe temperature (TH5) 122°F [50:] Set temperature 77°F [25:] 72°F [22:] Outdoor pipe temperature (TH3)
  • Page 55 10-9. TEST POINT DIAGRAM Outdoor controller circuit board PUZ-HA42NKA OCH567...
  • Page 56 Outdoor power circuit board Brief Check of POWER MODULE PUZ-HA42NKA – – – – – OCH567...
  • Page 57 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.* Abnormal history clear Clear Normal...
  • Page 58 Type of Action by the switch operation Switch Function Effective timing Switch No function — — — Power failure Auto recovery No auto recovery When power supply ON automatic recovery* No function — — — 3,4,5 Model select Following SW5-6 reference Power consumption SW7-1 SW7-2...
  • Page 59 Special function Note: When the DIP SW9-1 on the controller board of the outdoor unit is ON, set DIP SW 9-1 to OFF. <Low-level sound priority mode circuit> Insulate this point securely as Adapter for external this is not used. signal input Outdoor unit (PAC-SC36NA-E)
  • Page 60 <Display function of inspection for outdoor unit> [Display] (1)Normal condition Outdoor controller board A-Control Service Tool Unit condition LED1 (Green) LED2 (Red) Check code Indication of the display Lighted Lighted Alternately blinking display When the power is turned on Lighted Not lighted 00, etc.
  • Page 61 Indication Error Outdoor controller board Check Detailed Contents Inspection method reference code* LED1 (Green) LED2 (Red) page Abnormality of Discharge 1 Check if stop valves are open. 2 Check if connectors (TH4, TH34, LEV-A, and LEV-B) on outdoor 3 blinking 1 blinking temperature (TH4) and Comp.
  • Page 62 <Outdoor unit operation monitor function> [When optional part “A-Control Service Tool(PAC-SK52ST)” is connected to outdoor controller board(CNM)] 2 3 4 5 6 <Digital indicator LED1 working details> 1 second interval 2 3 4 5 6 The ones digit : Relay output The tens digit : Operation mode Warming-up Display...
  • Page 63 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6...
  • Page 64 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 OCH567...
  • Page 65 2 3 4 5 6 Capacity Code HA42N 2 3 4 5 6 Setting details H·P / 2 3 4 5 6 Setting details 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 OCH567...
  • Page 66 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 Description Display Normal...
  • Page 67 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 OCH567...
  • Page 68 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 OCH567...
  • Page 69 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 The tens digit Display Compressor operating frequency control Primary current control Secondary current control The ones digit (In this digit, the total number of activated control is displayed.) Display Compressor operating frequency control Preventive control for excessive temp-...
  • Page 70 2 3 4 5 6 2 3 4 5 6 2 3 4 5 6 Description Detection point Display Normal Overvoltage error Power circuit board Undervoltage error Controller circuit board Input current sensor error Controller circuit board L1 or L2-phase open error Abnormal power Power circuit board synchronous signal...

  • Page 71: 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 147 °F Conventional inspection work...
  • Page 72 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 73 11-2. GUIDE FOR OPERATION CONDITION Check Points Inspection item Result Breaker Good Retightened Enter the temperature differences between into Terminal block Outdoor Unit Good Retightened the graph given below. Indoor Unit Good Retightened Operation state is determined according to the plotted areas on (Insulation resistance) M"...

  • Page 74: Function Setting

    FUNCTION SETTING 12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Mode No. : Initial setting Function Settings Setting No. Remarks Wired remote controller (when sent from the factory) (RF thermostat) Power failure Not available (101) automatic recovery Available The setting is Indoor temperature Average data from each indoor unit applied to all the...
  • Page 75 : Initial setting ( Factory setting ) Mode No. - : Not available Cealing 4-Way Ceiling Function Settings Setting No. concealed cassette Suspended Wired remote controller (RF thermostat) PLA-BA PCA-KA PEAD-AA Filter sign 100h 2500h (107) "Clean the filter" indicator is not displayed Air flow Quiet Refer to...
  • Page 76 12-1-1. 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 77 [Operating Procedure] 1 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 2 to 7 , fill in the "Check" column in Table 1, then change them as necessary. For initial settings, refer to the indoor unit's installation manual. 2 Switch off the remote controller.
  • Page 78 12-1-2. Selecting functions using the IR wireless remote controller (Type C) [Flow of function selection procedure] The flow of the function selection procedure is shown below. This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation. The procedure is given after the flow chart.
  • Page 79 12-2. FUNCTION SELECTION OF REMOTE CONTROLLER The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed. Item 1 Item 2 Item 3 (Setting content) 1.Change language Language setting to display ("CHANGE LANGUAGE") 2.Function limit ("FUNCTION SELECTION")
  • Page 80 [Function selection flowchart] Normal display Hold down the button and press the button for 2 seconds. (Display when the air conditioner is not running) Setting language (English) Press the operation mode button. Hold down the button and press the button for 2 seconds. Press theTIMER MENU button.
  • Page 81 12-3. Function selection of the IR wireless remote controller TEMPERATURE DISPLAY -C/-F SETTING (Change of temp mode from -F to -C) AUTO START CHECK TEST COOL °F MODEL °C SELECT STOP AMPM AUTO SWING START AMPM HEAT NOT AVAILABLE ON/OFF TEMP AUTO STOP MODE...

  • Page 82: Monitoring The Operation Data By The Remote Controller

    MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 13-1. HOW TO "MONITOR THE OPERATION DATA" Turn on the [Monitoring the operation data] Example: Request code "004" Discharge temperature 156°F Refrigerant address "00" A: Mode display B: Refrigerant address C: Data display area D: Request code display area button for 3 seconds so that [Maintenance mode] appears on the screen (at A).
  • Page 83 13-2. REQUEST CODE LIST Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Description Request content Unit Remarks (Display range) Operation state Refer to 13-2-1. Detail Contents in Request Code. – Compressor-Operating current (rms) 0 –...
  • Page 84 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. Refer to 13-2-1.Detail Contents in Request Code. Compressor-Frequency control state – Outdoor unit-Fan control state Refer to 13-2-1.Detail Contents in Request Code.
  • Page 85 Description Request content Unit Remarks (Display range) Error history 1 (latest) Displays error history. (" - - " is displayed if no history is present.) Code Code Error history 2 (second to last) Displays error history. (" - - " is displayed if no history is present.) Error history 3 (third to last) Displays error history.
  • Page 86 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 87 13-2-1. Detail Contents in Request Code Example: Request code "004" Discharge temperature 156°F Refrigerant address "00" A: 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 88 [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 89 [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 90 [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 91 [Indoor unit – Model setting information] (Request code : 162) Data display Display Model setting state Display Model setting state See the table on the right. PKA-A·GA(L) PKA-A·FA(L) PCA-A·GA, PLA-A·BA PLA-A·AA PEA-A·AA PCA-A·KA PKA-A·HA(L)/KA(L) [Indoor unit – Capacity setting information] (Request code: 163 ) Data display Display Capacity setting state...

  • Page 92: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUZ-HA42NKA OPERATING PROCEDURE PHOTOS & ILLUSTRATION Photo 1 1. Removing the service panel and top panel 2. Removing the fan motor (MF1, MF2) Photo 2 Photo 3 3. Removing the electrical parts box Photo 4 OCH567...
  • Page 93 OPERATING PROCEDURE PHOTOS 4. Removing the thermistor <2-phase pipe> (TH6) and Photo 5 thermistor <Ambient>(TH7) Note: When replacing thermistor <2-phase pipe> (TH6) or thermistor <Ambient> (TH7), replace it together. Photo 6 5. Removing the thermistor <Discharge> (TH4) Photo 7 6. Removing the thermistor <Liquid> (TH3), thermistor Photo 8 <Suction>...
  • Page 94 OPERATING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), and linear expansion valve coil (LEV-A, LEV-B, LEV-C) Photo 10 [Removing the 4-way valve coil] [Removing the linear expansion valve coil] 8. Removing the 4-way valve 10. Removing the high pressure switch (63H), the low pressure switch (63L) and the pressure Note : When installing the 4-way valve, cover it with a wet sensor (63HS)
  • Page 95 OPERATING PROCEDURE PHOTOS 11. Removing the reactor (DCL) Photo 11 Photo 12 12. Removing the compressor (MC) Note: Recover refrigerant without spreading it in the air. 13. Removing the power receiver Note: Recover refrigerant without spreading it in the air. OCH567...
  • Page 97 August 2014 No. OCB567 PARTS CATALOG R410A Outdoor unit [Model Name] [Service Ref.] Note: PUZ-HA42NKA PUZ-HA42NKA CONTENTS 1. RoHS PARTS LIST .......... 2 SERVICE MANUAL (OCH567)
  • Page 98 RoHS PARTS LIST FUNCTIONAL AND ELECTRICAL PARTS PUZ-HA42NKA   10 11 12 OCB567...
  • Page 99 RoHS PARTS LIST Wiring Q'ty/unit Remarks Parts No. Parts Name Diagram (Drawing No.) PUZ-HA42NKA Symbol G T7W A00 221 FAN MOTOR MF1, 2 G R01 E14 115 PROPELLER FAN G R01 E09 097 NUT G T7W E73 408 HEAT EXCHANGER G R01 A57 602 COMP FELT (TOP) G R01 A70 602 COMP FELT (BODY) G T7W E69 242 SOLENOID COIL <4-WAY VALVE>...
  • Page 100 RoHS PARTS LIST STRUCTURAL PARTS PUZ-HA42NKA   OCB567...
  • Page 101 RoHS PARTS LIST Wiring Q'ty/unit Remarks Parts No. Parts Name Diagram (Drawing No.) PUZ-HA42NKA Symbol G R01 E30 662 SIDE PANEL (L) G R01 E05 655 HANDLE (FRONT) G R01 E73 691 FAN GRILLE G R01 E23 668 FRONT PANEL G R01 E45 686 BASE ASSY G R01 E35 658 COVER PANEL (FRONT) G R01 E36 658 COVER PANEL (REAR)

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