Mitsubishi Electric PUZ-HA30NHA4 Service Manual
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Mitsubishi Electric PUZ-HA30NHA4 Service Manual

Mitsubishi Electric PUZ-HA30NHA4 Service Manual

Mitsubishi electric split-type, heat pump air conditioners service manual
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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS

Outdoor unit

SERVICE MANUAL

Outdoor unit
[model name]
PUZ-HA30NHA4
PUZ-HA36NHA4
R410A
[Service Ref.]
PUZ-HA30NHA4
PUZ-HA36NHA4
PUZ-HA30NHA4
PUZ-HA36NHA4
NOTE:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
CONTENTS
1. REFERENCE MANUAL ·································· 2
2. SAFETY PRECAUTION ·································· 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 ··································· 17
11. EASY MAINTENANCE FUNCTION··············· 70
12. FUNCTION SETTING ···································· 73
14. DISASSEMBLY PROCEDURE ······················ 91
PARTS CATALOG (OCB504)
July 2011
No. OCH504

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Summary of Contents for Mitsubishi Electric PUZ-HA30NHA4

  • Page 1: Table Of Contents

    R410A Outdoor unit NOTE: • This manual describes only [Service Ref.] [model name] service data of the outdoor units. PUZ-HA30NHA4 PUZ-HA30NHA4 • RoHS compliant products have <G> mark on the spec name PUZ-HA36NHA4 PUZ-HA36NHA4 plate. CONTENTS 1. REFERENCE MANUAL ·································· 2 2.

  • Page 2: Reference Manual

    REFERENCE MANUAL 1-1. INDOOR UNIT Service Model name Service Ref. Manual No. PLA-A18/30/36BA4 PLA-A18/30/36BA4 OCH482/OCB482 PKA-A18HA4 PKA-A18HA4 OCH483/OCB483 PKA-A30/36KA4 PKA-A30/36KA4.TH OCH488/OCB488 PEA-A18AA4 PEA-A18AA4.TH HWE08070 PEAD-A30/36AA4 PEAD-A30/36AA4 HWE09050 PCA-A30/36KA4 PCA-A30/36KA4 OCH484/OCB484 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 followings.
  • 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 New refrigerant R10A is adopted for replacement inverter series. Although the refrigerant piping work for R10A is same as for R, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R10A is 1.6 time higher than that of R, their sizes of flared sections and flare nuts are different.

  • Page 6: Features

    FEATURES PUZ-HA30NHA4 PUZ-HA36NHA4 HIGH HEATING CAPACITY Performance Industry-first flash injection circuit is equipped, which enables to (Btu/h) 60%UP about keep the equal capacity to the rating even when outside tem- 40,000 HA36 perature is °F[-1°C]. 38,000BTU/h 30,000 23,500BTU/h -13°F -4°F 5°F...

  • Page 7: Specifications

    SPECIFICATIONS Service Ref. PUZ-HA30NHA4 PUZ-HA36NHA4 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 ANB33FJEMT Motor output R.L.A. L.R.A.

  • Page 8: Data

    218 oz 224 oz 230 oz 237 oz 242 oz 254 oz 260 oz 272 oz 280 oz 195 oz PUZ-HA30NHA4 PUZ-HA36NHA4 5.5 kg 5.7 kg 5.9 kg 6.0 kg 6.2 kg 6.4 kg 6.6 kg 6.7 kg 6.9 kg 7.2 kg...
  • Page 9 5-4. STANDARD OPERATION DATA PKA-A30KA4 Representative matching PKA-A36KA4 COOLING HEATING Mode COOLING HEATING Total Capacity BTU/h 33,500 38,000 30,000 32,000 2,500 2,930 2,790 3,410 Input Indoor unit model PKA-A36KA PKA-A30KA Phase Single Cycle 60Hz Voltage 230V Current 0.36A 0.57A Outdoor unit model PUZ-HA36NHA2 PUZ-HA30NHA2 Phase...

  • Page 10: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUZ-HA30NHA4 Unit : mm<inch> PUZ-HA36NHA4...

  • Page 11: Wiring Diagram

    WIRING DIAGRAM PUZ-HA30NHA4 PUZ-HA36NHA4 [LEGEND] SYMBOL NAME SYMBOL NAME SYMBOL NAME Terminal Block<Power Supply, Indoor/Outdoor > P.B. Power Circuit Board Switch<Model Select> Motor for Compressor TABU/V/W Connection Terminal<U/V/W-Phase> Switch<Function Setup> MF1, MF2 Fan Motor TABS/T Connection Terminal <L/N-Phase> Switch<Function Setup>...

  • Page 12: Wiring Specifications

    WIRING SPECIFICATIONS 8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT The following connection patterns are available. The outdoor unit power supply patterns vary on models. 1:1 System Simultaneous twin system Outdoor unit power supply Wiring circuit breaker or isolating switch Outdoor unit Indoor unit/outdoor unit connecting cords Remote controller...

  • Page 13: Separate Indoor Unit/Outdoor Unit Power Supplies

    8-2. SEPARATE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES The following connection patterns are available. The outdoor unit power supply patterns vary on models. 1:1 System * 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: M-Net Wiring Method

    8-3. INDOOR – OUTDOOR CONNECTING CABLE Wire No. Size Outdoor power supply Max. 50m, 164ft Max. 80m, 262ft Max. 45m, 147ft Indoor unit-Outdoor unit AWG13(polar) AWG13(polar) and S3 separated AWG15(polar) The Max. cable length may vary depending on the condition of installation, humidity or materials, etc. Wire No.
  • Page 15 ● M-NET wiring M-NET (1) Use -core x 1.mm [AWG16] shield wire for electric wires. terminal (Excluding the case connecting to system controller.) Ground block wire () Connect the wire to the M-NET terminal block. Connect one core of the transmission wire (non-polar) to A terminal and the other to B.

  • Page 16: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PUZ-HA30NHA4 PUZ-HA36NHA4 unit : mm (inch) Thermistor TH7 (Outdoor) Heat exchanger Thermistor Solenoid valve Ball valve Refrigerant (Outdoor (Four-way valve) GAS pipe 2-phase pipe) connection 15.88(5/8) Strainer Charge plug Thermistor TH3 (High pressure) (Outdoor pipe) Charge plug...

  • Page 17: 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 18 Operating procedures While the room temperature display on the remote "TEST RUN" and the currently selected controller is “PLEASE WAIT”, the remote controller is disabled. operation mode are displayed altemately. Wait until “PLEASE WAIT” disappears before using remote controller. 1. Turn on the main power supply. “PLEASE WAIT”...
  • Page 19 Test run [for IR wireless remote controller] Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 00V Megger and check that it is equal to or greater than 1.0M". TEST COOL 1 Turn on the main power to the unit. TEST RUN 2 Press the button twice continuously.

  • Page 20: How To Proceed "Self-Diagnosis

    10-3. HOW TO PROCEED "SELF-DIAGNOSIS" 10-3-1. When a Problem Occurs During Operation If a problem occurs in the air conditioner, the indoor and outdoor units will stop, and the problem is shown in the remote controller display. [CHECK] and the refrigerant address are displayed on the temperature display, and the error code and unit number are displayed alternately as shown below.

  • Page 21: Remote Controller Diagnosis

    When the error history is reset, the display will look like the one shown below. Press the button twice within 3 seconds. The self-diagnosis ON/OFF However, if you fail to reset the error history, the error content will be displayed again. address or refrigerant address will blink.
  • Page 22 10-3-4. Malfunction-diagnosis method by IR 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 23 • Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds Beep Beep Beep Beep Beep Beep Beep OPERATION · · · Repeated INDICATOR lamp blink pattern Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.

  • Page 24: 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. Error Code Abnormal point and detection method Case Judgment and action 1 No voltage is supplied to termi- 1 Check following items.
  • Page 25 Error Code Abnormal point and detection method Case Judgment and action 63H connector open 1 Disconnection or contact failure 1 Check connection of 6H connector on Abnormal if 6H connector circuit is open of 6H connector on outdoor outdoor controller circuit board. for  minutes continuously after power sup- controller circuit board Refer to 10-9.
  • Page 26 <Abnormalities detected while unit is operating> <Abnormalities detected while unit is operating> Abnormal point and detection method Judgment and action Error Code Case High pressure (High-pressure switch 1 Short cycle of indoor unit 1~6 Check indoor unit and repair defect. 63H worked) 2 Clogged filter of indoor unit Abnormal if high-pressure switch 6H...
  • Page 27 Error Code Abnormal point and detection method Case Judgment and action Open/short circuit of discharge 1 Disconnection or contact failure 1 Check connection of connector (TH) on the outdoor controller circuit board. temperature thermistor (TH4) of connector (TH) on the out- Abnormal if open (: [37˚F] or less) or Check breaking of the lead wire for thermis- door controller circuit board...
  • Page 28 Error Code Abnormal point and detection method Case Judgment and action Outdoor fan motor 1 Failure in the operation of the 1 Check or replace the DC fan motor. The outdoor fan motor is considered to be DC fan motor abnormal if the rotational frequency of fan 2 Failure in the outdoor circuit 2 Check the voltage of the outdoor circuit con-...
  • Page 29 Error Code Abnormal point and detection method Case Judgment and action Abnormal low pressure (63L worked) 1 Stop valve of outdoor unit is 1 Check stop valve. Abnormal if 6L is worked (under closed during operation. -0.0MPa[-PSIG]) during compressor 2 Disconnection or loose con- 2~4 Turn the power off and on again to check operation.
  • Page 30 Error Code Abnormal point and detection method Case Judgment and action Remote controller transmission error(E3)/signal receiving error(E5) 1  remote controllers are set as 1 Set a remote controller to main, and the 1 Abnormal if remote controller could not “main.”...
  • Page 31 Error Code Abnormal point and detection method Case Judgment and action Serial communication error 1 Breaking of wire or contact 12 Check connection of each connector CN 1. Abnormal if serial communication failure of connector CN and CN between the outdoor controller between outdoor controller circuit board between the outdoor controller circuit board and the outdoor power circuit...
  • Page 32 <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  or more same Search the unit with same address as abnormali- This error is displayed when transmission address of controller of out- ty occurred.
  • Page 33 Error Code Abnormal point and detection method Case Judgment and action NO ACK signal Common factor that has no rela- Always try the followings when the error 1. Transmitting side controller detects tion with abnormality source. “A7” occurs. 1 The unit of former address abnormal if a message was transmitted 1 Turn off the power supply of outdoor unit but there is no reply (ACK) that a mes-...
  • Page 34 From the previous page. Error Code Abnormal point and detection method Case Judgment and action . 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, page.

  • Page 35: Troubleshooting By Inferior Phenomena

    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 Abnormal if a message was transmitted repeated fault because of transmission wire. noise and the like. and there were reply (ACK) that message 2 Turn off the power supply of outdoor unit 2 Extension of transmission wire...
  • Page 36 Phenomena Factor Countermeasure . Even controlling by the IR wireless 1 The pair number settings of the IR wireless remote 1 Check the pair number settings. remote controller no beep is heard controller and indoor controller board are mismatched. and the unit does not start operat- ing.
  • Page 37 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 38: 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. AC 187V to AC 253V? Check the voltage among L1 and L2 on the terminal block (TB1) of the...
  • Page 39 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.
  • Page 40 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 indoor unit. DC 10V to DC 16V? •...
  • Page 41 • 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 42 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 43 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. applied to the models which The blower is operating just for cooling down the with the heated-up air conditioner.
  • Page 44 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 45 10-6. HOW TO CHECK THE PARTS PUZ-HA30NHA4 PUZ-HA36NHA4 Check points Parts name Thermistor (TH3) Disconnect the connector then measure the resistance with a tester. <Outdoor pipe> (Ambient temperature 10 ~30 , 50°F~86°F) Thermistor (TH4) <Discharge> Normal Abnormal Thermistor (TH6) 160k ~410k <Outdoor 2-phase pipe>...
  • Page 46 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 47 10-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH) • Thermistor <Outdoor -phase pipe> (TH6) • Thermistor <Outdoor> (TH7) • Thermistor <Outdoor pipe> (TH) • Thermistor <Outdoor pipe> (TH) Thermistor R0 = 1k' ± % B constant = 80 ±...

  • Page 48: Linear Expansion Valve

    Linear expansion valve (1) Operation summary of the linear expansion valve • Linear expansion valve opens/closes through stepping motor after receiving the pulse signal from the outdoor controller board. • Valve position can be changed in proportion to the number of pulse signal. <Connection between the indoor controller board and the linear expansion valve>...
  • Page 49 (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 50: Emergency Operation

    10-8. EMERGENCY OPERATION (1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency opera- tion switch (SWE) to ON and short-circuiting the connector (CN1) on outdoor controller board.
  • Page 51 (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 , 81°F 20.5 , 69°F Intake temperature (TH1) 5 , 41°F...
  • Page 52 10-9. TEST POINT DIAGRAM <CAUTION> TEST POINT1 is high voltage. Outdoor controller circuit board PUZ-HA30NHA4 PUZ-HA36NHA4 Forced defrost, detect history record reset, Demand control setting CN1 refrigerant address External signal output • Compressor operat- ing signal • Abnormal signal Model select...
  • Page 53 Outdoor noise filter circuit board PUZ-HA30NHA4 PUZ-HA36NHA4 CNC C driving signal (Connect to the outdoor controller circuit board (CNC).) LO, NO Voltage of 08/0V AC is output (Connect to the outdoor CNAC1, CNAC power circuit board 08/0V AC (TABS, TABT))
  • Page 54 Outdoor power circuit board Brief check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. PUZ-HA30NHA4 Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken.
  • Page 55 Active filter module PUZ-HA30NHA4 PUZ-HA36NHA4 Connect to the outdoor power circuit board(TABP) L1, L Connect to the DCL(Reactor) Non-connect Lower side Upper side Non-connect Connect to the outdoor power circuit board (TABP1) Connect to the outdoor power circuit board(CNAF) –...

  • Page 56: Function Of Switches, Connectors And Jumpers

    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 Forced defrost 1 Start Normal in heating operation. 1 Abnormal history clear Clear Normal off or operating 1 2 3 4 5 6...
  • Page 57 Action by the switch operation Type of Switch Function Effective timing Switch No function — — — Power failure Auto recovery No auto recovery When power supply ON automatic recovery 2 No function — — — 3,4,5 Model select Following SW5-6 reference Power consumption SW7-1 SW7-2...
  • Page 58 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  to  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 59 <Display function of inspection for outdoor unit> The blinking patterns of both LED1(green) and LED(red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part “A-Control Service Tool (PAC-SKST)” to connector CNM on outdoor controller board.
  • Page 60 Indication Error Outdoor controller board Error Detailed Contents Inspection method code reference LED1 (Green) LED2 (Red) page Check if stop valves are open. 3 blinking 1 blinking Abnormality of shell thermostat P.26 Check if connectors (TH4, LEV-A, and LEV-B) on outdoor controller and discharging temperature (TH4) board are not disconnected.
  • Page 61 <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  digit number or code to inform operation condition and the meaning of error code by controlling DIP SW on “A-Control Service Tool”. Operation indicator SW : Indicator change of self diagnosis Explanation for display...
  • Page 62 SW setting Display detail Explanation for display Unit Pipe temperature / Liquid(TH) – 0~19 (– 0~90:) (When the coil thermistor detects 0˚F or below, “–” – 0~19 and temperature are displayed by turns.) ˚F (Example) When -10˚F; 2 3 4 5 6 0. secs.
  • Page 63 Explanation for display Unit SW setting Display detail Pipe temperature / Liquid(TH) on error – 0~19 (– 0~90:) (When the coil thermistor detects 0˚F or below, “–” occurring – 0~19 and temperature are displayed by turns.) ˚F (Example) When –15˚F; 0. secs.
  • Page 64 Explanation for display SW setting Display detail Unit The number of connected indoor units (The number of connected indoor units are dis- played.) Unit 2 3 4 5 6 Capacity setting display Displayed as an outdoor capacity code Capacity Code Code HA30N display...
  • Page 65 Explanation for display Unit SW setting Display detail Indoor setting temperature 6~86 (17~0:) 6~86 ˚F 2 3 4 5 6 Outdoor pipe temperature / -phase -8~190 (-9~88:) (When the temperature is 0˚F or less, “–” and (TH6) -8~190 temperature are displayed by turns.) ˚F 2 3 4 5 6 Outdoor outside temperature (TH7)
  • Page 66 Explanation for display Unit SW setting Display detail 0~100 Capacity save (When the capacity is 100%, hundreds digit, tens 0~100 digit and ones digit are displayed by turns.) When air conditioner is connected to (Example) When 100%; M-NET and capacity save mode is 0. secs.
  • Page 67 Explanation for display Unit SW setting Display detail 0~80 LEV-A opening pulse on error occurring (When it is 100 pulse or more, hundreds digit, tens 0~80 digit and ones digit are displayed by turns.) (Example) When 10 pulse; Pulse 0. secs. 0.secs.
  • Page 68 SW setting Display detail Explanation for display Unit 0~7 (0~18degC) Discharge superheat on error occurring (When the temperature is 100degF or more, hundreds digit, tens digit and ones digit are 0~7 displayed by turns.) degF (Example) When 10degF; Cooling = TH-TH6 2 3 4 5 6 0. secs.
  • Page 69 Explanation for display Unit SW setting Display detail Controlling status of compressor The following code will be a help to know the operating frequency operating status of unit. • The tens digit Display Compressor operating frequency control Primary current control Secondary current control •...

  • Page 70: 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.
  • Page 71 ● 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 72 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) the graph.

  • Page 73: Function Setting

    FUNCTION SETTING 12-1. UNIT FUNCTION SETTING BY THE REMOTE CONTROLLER Each function can be set according to necessity using the remote controller. The setting of function for each unit can only be done by the remote controller. Select function available from the table 1. (1) Functions available when setting the unit number to 00 (Select 00 referring to 4 setting the indoor unit number.) <Table 1>...
  • Page 74 () Functions available when setting the unit number to 01-0 or AL (07 in the case of the IR 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.
  • Page 75 12-1-1. Selecting functions using the wired remote controller First, try to familiarize yourself with the flow of the function selection procedure. In this section, an example of setting the room temperature detection position is given. For actual operations, refer to steps Setting number Refrigerant address Unit number...
  • Page 76 [Operating Procedure] Check the setting items provided by function selection. If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps , fill in the "Check" column in Table 1, then change them as necessary. For initial settings, refer to the indoor unit's installation manual. Switch off the remote controller.
  • Page 77 12-1-2. Selecting functions using the IR wireless remote controller (Type C) Functions can be selected with the IR wireless remote controller. Function selection using the IR wireless remote controller is available only for refrigerant system with wireless function. Refrigerant address cannot be specified by the IR wireless remote controller. [Flow of function selection procedure] Flow of function selection procedure The flow of the function selection procedure is shown below.
  • Page 78 12-2. FUNCTION SELECTION OF REMOTE CONTROLLER The setting of the following remote controller functions can be changed using the remote controller function selection mode. Change the setting when needed. Item 1 Item 2 Item 3 (Setting content) 1.Change language Language setting to display •...
  • Page 79 [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 80 12-3. Function selection of the IR wireless remote controller TEMPERATURE DISPLAY -C/-F SETTING (Change of temp mode from -F to -C) 1 Press the set button with something sharp at the end. MODEL SELECT blinks. AUTO START 2 Press the button.

  • Page 81: 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 (1) Press the button for 3 seconds so that [Maintenance mode] appears on the screen (at...
  • Page 82 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 14-2-1. Detail Contents in Request Code. – Compressor-Operating current (rms) 0 –...
  • Page 83 Description Request content Unit Remarks (Display range) Indoor unit-Control state – Refer to 14-2-1.Detail Contents in Request Code. Outdoor unit-Control state – Refer to 14-2-1.Detail Contents in Request Code. Compressor-Frequency control state Refer to 14-2-1.Detail Contents in Request Code. – Outdoor unit-Fan control state –...
  • Page 84 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 85 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 86 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 87 [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 88 [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 89 [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 90 [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 91: Disassembly Procedure

    DISASSEMBLY PROCEDURE PUZ-HA30NHA4 PUZ-HA36NHA4 OPERATING PROCEDURE PHOTOS & ILLUSTRATION Figure 1 1. Removing the service panel and top panel Top panel fixing screws Top panel (1) Remove  service panel fixing screws ( × 10) and slide the hook on the right downward to remove the service Service panel panel.
  • Page 92 OPERATING PROCEDURE PHOTOS 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) Photo 4 and thermistor <Outdoor>(TH7) (1) Remove the service panel. (See Figure 1.) () Remove the top panel. (See Figure 1.) Heat () Disconnect the connectors TH7/6 (red) on the controller exchanger circuit board in the electrical parts box.
  • Page 93 OPERATING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), and linear expansion valve coil (LEV-A, LEV-B, LEV-C) (1) Remove the service panel. (See Figure 1.) () Remove the top panel. (See Figure 1.) [Removing the 4-way valve coil] () Remove -way valve coil fixing screw (M × 6). () Remove the -way valve coil by sliding the coil toward you.
  • Page 94 OPERATING PROCEDURE PHOTOS 11. Removing the reactor (DCL) and capacitor (CE) Photo 10 (1) Remove the service panel. (See Figure 1.) Reactor Electrical parts box (DCL) () Remove the top panel. (See Figure 1.) () Remove the electrical parts box. (See Photo .) <Removing the reactor>...
  • Page 96 HEAD OFFICE : TOKYO BLDG., -7-, MARUNOUCHI, CHIYODA-KU, TOKYO 100-810, JAPAN New publication, effective Jul. 011 CCopyright 011 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Specifications subject to change without notice Distributed in Jul. 011 No. OCH0 Made in Japan...

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