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Mitsubishi Electric Mr.Slim PUZ-HA30NHA2 Service Manual
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Mitsubishi Electric Mr.Slim PUZ-HA30NHA2 Service Manual

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SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS
Outdoor unit
SERVICE MANUAL
Outdoor unit
[model name]
PUZ-HA30NHA
PUZ-HA36NHA
PUZ-HA30NHA2
PUZ-HA36NHA2
R410A
[Service Ref.]
PUZ-HA30NHA
PUZ-HA36NHA
PUZ-HA30NHA2
PUZ-HA36NHA2
PUZ-HA30NHA
PUZ-HA36NHA
PUZ-HA30NHA2
PUZ-HA36NHA2
Revision:
• PUZ-HA30/36NHA2 are added
in REVISED EDITION-B.
• Some descriptions have been
modified.
• Please void OCH426
REVISED EDITION-A.
NOTE:
• This manual describes only
service data of the outdoor
units.
• RoHS compliant products have
<G> mark on the spec name
plate.
CONTENTS
1. TECHNICAL CHANGES ································· 2
2. REFERENCE MANUAL ·································· 2
3. SAFETY PRECAUTION ·································· 3
4. FEATURES ······················································ 6
5. SPECIFICATIONS ··········································· 7
6. DATA ································································ 8
7. OUTLINES AND DIMENSIONS ·····················11
8. WIRING DIAGRAM ········································ 12
9. WIRING SPECIFICATIONS ··························· 13
10. REFRIGERANT SYSTEM DIAGRAM ·············· 17
11. TROUBLESHOOTING ··································· 18
12. EASY MAINTENANCE FUNCTION ·············· 71
13. FUNCTION SETTING ···································· 74
15. DISASSEMBLY PROCEDURE ······················ 92
PARTS CATALOG (OCB426)
March 2009
No.OCH426
REVISED EDITION-B

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Summary of Contents for Mitsubishi Electric Mr.Slim PUZ-HA30NHA2

  • Page 1: Table Of Contents

    SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS Outdoor unit March 2009 No.OCH426 REVISED EDITION-B SERVICE MANUAL R410A Outdoor unit Revision: • PUZ-HA30/36NHA2 are added [Service Ref.] [model name] in REVISED EDITION-B. • Some descriptions have been PUZ-HA30NHA PUZ-HA30NHA modified. PUZ-HA36NHA PUZ-HA36NHA • Please void OCH426 PUZ-HA30NHA2 PUZ-HA30NHA2 REVISED EDITION-A.

  • Page 2: Technical Changes

    TECHNICAL CHANGES PUZ-HA30NHA PUZ-HA30NHA2 • OUTDOOR CONTROLLER BOARD (C.B.) has been changed. (S/W version up: Corresponding to the additional combination between PKA-A HA(L)/KA(L)) • PUZ-HA36NHA PUZ-HA36NHA2 • OUTDOOR CONTROLLER BOARD (C.B.) has been changed. (S/W version up: Corresponding to the additional combination between PKA-A HA(L)/KA(L)) •...

  • Page 3: Safety Precaution

    SAFETY PRECAUTION 3-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminals, all supply circuits must be disconnected. 3-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. Do not use refrigerant other than R410A. In case of using the existing pipes for R22, be careful with If other refrigerant (R22 etc.) is used, chlorine in refrige- the followings.
  • Page 4 [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 3-3. CAUTIONS FOR REFRIGERANT PIPING WORK New refrigerant R410A is adopted for replacement inverter series. Although the refrigerant piping work for R410A is same as for R22, exclusive tools are necessary so as not to mix with different kind of refrigerant. Furthermore as the working pressure of R410A is 1.6 time higher than that of R22, their sizes of flared sections and flare nuts are different.

  • Page 6: Features

    FEATURES PUZ-HA30NHA PUZ-HA36NHA PUZ-HA30NHA2 PUZ-HA36NHA2 HIGH HEATING CAPACITY Industry-first flash injection circuit is equipped, which enables to Performance (Btu/h) 60%UP about keep the equal capacity to the rating even when outside tem- 40,000 HA36 perature is 5°F[-15°C]. 38,000BTU/h 30,000 23,500BTU/h -13°F -4°F 5°F...

  • Page 7: Specifications

    SPECIFICATIONS Service Ref. PUZ-HA30NHA2 PUZ-HA30NHA PUZ-HA36NHA PUZ-HA36NHA2 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 ANB33FJEMT Model ANB33FJCMT ANB33FJEMT Motor output R.L.A.

  • Page 8: Data

    DATA 6-1. REFILLING REFRIGERANT CHARGE (R410A : oz, kg) Piping Length ( one way ) Factory Service Ref. 100ft 110ft 120ft 130ft 140ft 150ft 160ft 165ft 180ft 200ft 210ft 230ft 245ft Charged PUZ-HA30NHA 194 oz 200 oz 206 oz 212 oz 218 oz 224 oz 230 oz...
  • Page 9 6-4. STANDARD OPERATION DATA Representative matching PKA-A30FA PKA-A36FA COOLING HEATING Mode COOLING HEATING 30,000 32,000 Total Capacity BTU/h 34,200 38,000 Input 2,730 3,460 2,950 3,100 Indoor unit model PKA-A30FA PKA-A36FA Phase Single Cycle 60Hz Voltage 230V Current 0.52A Outdoor unit model PUZ-HA36NHA PUZ-HA30NHA Phase...
  • Page 10 PKA-A30KA Representative matching PKA-A36KA Mode COOLING HEATING COOLING HEATING Total Capacity BTU/h 30,000 32,000 33,500 38,000 Input 2,500 2,930 2,790 3,410 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 Single Cycle...

  • Page 11: Outlines And Dimensions

    OUTLINES AND DIMENSIONS PUZ-HA30NHA Unit : mm<inch> PUZ-HA36NHA PUZ-HA30NHA2 PUZ-HA36NHA2...

  • Page 12: Wiring Diagram

    WIRING DIAGRAM PUZ-HA30NHA PUZ-HA36NHA PUZ-HA30NHA2 PUZ-HA36NHA2 [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 13: Wiring Specifications

    WIRING SPECIFICATIONS 9-1. 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 14 9-2. 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 15 9-3. 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) and S3 separated AWG15(polar) AWG13(polar) The Max. cable length may vary depending on the condition of installation, humidity or materials, etc. Wire No.
  • Page 16 M-NET wiring (1) Use 2-core x 1.25mm [AWG16] shield wire for electric wires. M-NET terminal (Excluding the case connecting to system controller.) Ground block (2) Connect the wire to the M-NET terminal block. Connect one core of the wire transmission wire (non-polar) to A terminal and the other to B. Peel the shield wire, twist the shield part to a string and connect it to S terminal.

  • Page 17: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM PUZ-HA30NHA PUZ-HA36NHA unit : mm(inch) PUZ-HA30NHA2 PUZ-HA36NHA2 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 Muffler High pressure Distributor...

  • Page 18: Troubleshooting

    TROUBLESHOOTING 11-1. 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 19 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 20 Test run [for wireless remote controller] Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500V Megger and check that it is equal to or greater than 1.0M". TEST COOL 1 Turn on the main power to the unit. 2 Press the TEST RUN button twice continuously.
  • Page 21 11-3. HOW TO PROCEED "SELF-DIAGNOSIS" 11-3-1. 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 22 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 23 11-3-4. Malfunction-diagnosis method by wireless remote controller <In case of trouble during operation> When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. < Malfunction-diagnosis method at maintenance service> [Procedure] 1.
  • Page 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.
  • Page 25 11-4. SELF-DIAGNOSIS ACTION TABLE (Note 1) Refer to indoor unit section for code P and code E. <Abnormalities detected when the power is turned on> Error Code Abnormal point and detection method Case Judgment and action 1 No voltage is supplied to termi- 1 Check following items.
  • Page 26 Error Code Abnormal point and detection method Case Judgment and action 1 Disconnection or contact failure 1 Check connection of 63H connector on 63H connector open Abnormal if 63H connector circuit is open of 63H connector on outdoor outdoor controller circuit board. for 3 minutes continuously after power sup- controller circuit board Refer to 11-9.
  • Page 27 <Abnormalities detected while unit is operating> <Abnormalities detected while unit is operating> Abnormal point and detection method Judgment and action Error Code 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 worked) Abnormal if high-pressure switch 63H...
  • Page 28 Error Code Abnormal point and detection method Case Judgment and action 1 Disconnection or contact failure 1 Check connection of connector (TH4) on the Open/short circuit of discharge outdoor controller circuit board. of connector (TH4) on the out- temperature thermistor (TH4) Check breaking of the lead wire for thermis- Abnormal if open (3: [37˚F] or less) or door controller circuit board...
  • Page 29 Error Code Abnormal point and detection method Case Judgment and action 1 Failure in the operation of the 1 Check or replace the DC fan motor. Outdoor 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 30 Error Code Abnormal point and detection method Case Judgment and action 1 Stop valve of outdoor unit is 1 Check stop valve. Abnormal low pressure (63L worked) Abnormal if 63L is worked (under closed during operation. -0.03MPa[-4PSIG]) during compressor 2 Disconnection or loose con- 2~4 Turn the power off and on again to check operation.
  • Page 31 Error Code Abnormal point and detection method Case Judgment and action Remote controller transmission 1 2 remote controllers are set as 1 Set a remote controller to main, and the error(E3)/signal receiving error(E5) 1 Abnormal if remote controller could not “main.”...
  • Page 32 Error Code Abnormal point and detection method Case Judgment and action 1 Breaking of wire or contact 12 Check connection of each connector CN2 Serial communication error 1. Abnormal if serial communication failure of connector CN2 and CN4 between the outdoor controller between outdoor controller circuit board between the outdoor controller circuit board and the outdoor power circuit...
  • Page 33 (Note) “Indoor unit” in the text indicates M-NET board in outdoor unit. <M-NET communication error> Error Code Abnormal point and detection method Case Judgment and action 1 There are 2 or more same Search the unit with same address as abnormali- Address duplicate definition This error is displayed when transmission ty occurred.
  • Page 34 Error Code Abnormal point and detection method Case Judgment and action Common factor that has no rela- NO ACK signal Always try the followings when the error 1. Transmitting side controller detects tion with abnormality source. “A7” occurs. abnormal if a message was transmitted 1 The unit of former address but there is no reply (ACK) that a mes- does not exist as address...
  • Page 35 From the previous page. Error Code Abnormal point and detection method Case Judgment and action 4. If displayed address or attribute is 1 During group operation with Same as mentioned in “A7” of the previous remote controller, indoor unit of multi- refrigerant page.
  • Page 36 Error Code Abnormal point and detection method Case Judgment and action 1 Transmitting condition is 1 Check transmission waveform or noise on M-NET NO RESPONSE repeated fault because of Abnormal if a message was transmitted 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 37 Phenomena Factor Countermeasure 4. Even controlling by the wireless 1 The pair number settings of the wireless remote 1 Check the pair number settings. remote controller no beep is heard controller and indoor controller board are mismatched. and the unit does not start operat- ing.
  • Page 38 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 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. AC 187V to AC 253V? Check the voltage among L1 and L2 on the terminal block (TB1) of the...
  • Page 40 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 41 LED display of the indoor controller board LED1 : Symptoms: Nothing is displayed on the remote controller LED2 : LED3 : — Inspection method and Diagnosis flow Cause troubleshooting Check the voltage of the terminal block (TB6) of the remote controller. DC 10V to DC 16V? •...
  • Page 42 • 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 43 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 44 Phone Calls From Customers How to Respond Note However, this control is also Something Air blows out for a while after 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 45 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 46 11-6. HOW TO CHECK THE PARTS PUZ-HA30NHA PUZ-HA36NHA PUZ-HA30NHA2 PUZ-HA36NHA2 Parts name Check points 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 47 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 48 11-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3) • Thermistor <Outdoor 2-phase pipe> (TH6) • Thermistor <Outdoor> (TH7) • Thermistor <Outdoor pipe> (TH32) • Thermistor <Outdoor pipe> (TH33) Thermistor R0 = 15k' ± 3% B constant = 3480 ±...
  • Page 49 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 50 (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 51 11-8. EMERGENCY OPERATION (1) When the error codes shown below are displayed on outdoor unit or microcomputer for wired remote controller or indoor unit has a failure, but no other problems are found, emergency operation will be available by setting the emergency opera- tion switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller board.
  • Page 52 (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 53 11-9. TEST POINT DIAGRAM <CAUTION> TEST POINT1 is high voltage. Outdoor controller circuit board PUZ-HA30NHA PUZ-HA36NHA PUZ-HA30NHA2 PUZ-HA36NHA2 Forced defrost, detect history record reset, Demand control setting CN51 refrigerant address External signal output • Compressor operat- ing signal • Abnormal signal Model select CNDM 1 to 2:...
  • Page 54 Outdoor noise filter circuit board PUZ-HA30NHA PUZ-HA36NHA PUZ-HA30NHA2 PUZ-HA36NHA2 CN52C 52C driving signal (Connect to the outdoor controller circuit board (CN52C).) LO, NO Voltage of 208/230V AC is output (Connect to the outdoor CNAC1, CNAC2 power circuit board 208/230V AC (TABS, TABT)) (Connect to the outdoor control-...
  • Page 55 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-HA30NHA Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken. PUZ-HA36NHA 1.
  • Page 56 Active filter module PUZ-HA30NHA PUZ-HA36NHA PUZ-HA30NHA2 PUZ-HA36NHA2 Connect to the outdoor power circuit board(TABP2) L1, L2 Connect to the DCL(Reactor) Non-connect Lower side Upper side Non-connect Connect to the outdoor power circuit board (TABP1) Connect to the outdoor power circuit board(CNAF) –...
  • Page 57 11-10. 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 58 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 59 Special function (a) Low-level sound priority mode (Local wiring) Unit enters into Low-level sound priority mode by external signal input setting. Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual. Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional...
  • Page 60 <Display function of inspection for outdoor unit> The blinking patterns of both LED1(green) and LED2(red) indicate the types of abnormality when it occurs. Types of abnormality can be indicated in details by connecting an optional part “A-Control Service Tool (PAC-SK52ST)” to connector CNM on outdoor controller board.
  • Page 61 Indication Error Error Outdoor controller board 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.28 Check if connectors (TH4, LEV-A, and LEV-B) on outdoor controller and discharging temperature (TH4) board are not disconnected.
  • Page 62 <Outdoor unit operation monitor function> [When optional part “A-Control Service Tool(PAC-SK52ST)” is connected to outdoor controller board(CNM)] Digital indicator LED1 displays 2 digit number or code to inform operation condition and the meaning of error code by controlling DIP SW2 on “A-Control Service Tool”. Operation indicator SW2 : Indicator change of self diagnosis SW2 setting...
  • Page 63 SW2 setting Display detail Explanation for display Unit Pipe temperature / Liquid(TH3) – 40~194 (– 40~90:) – 40~194 (When the coil thermistor detects 0˚F or below, “–” and temperature are displayed by turns.) ˚F (Example) When -10˚F; 2 3 4 5 6 0.5 secs.
  • Page 64 Display detail Explanation for display Unit SW2 setting Pipe temperature / Liquid(TH3) on error – 40~194 (– 40~90:) occurring (When the coil thermistor detects 0˚F or below, “–” – 40~194 and temperature are displayed by turns.) ˚F (Example) When –15˚F; 0.5 secs.
  • Page 65 Display detail Explanation for display SW2 setting 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 66 Display detail Explanation for display Unit SW2 setting Indoor setting temperature 62~86 (17~30:) 62~86 ˚F 2 3 4 5 6 Outdoor pipe temperature / 2-phase -38~190 (-39~88:) (TH6) (When the temperature is 0˚F or less, “–” and -38~190 temperature are displayed by turns.) ˚F 2 3 4 5 6 Outdoor outside temperature (TH7)
  • Page 67 Display detail Explanation for display Unit SW2 setting 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 0.5 secs.
  • Page 68 Display detail Explanation for display Unit SW2 setting 0~480 LEV-A opening pulse on error occurring (When it is 100 pulse or more, hundreds digit, tens 0~480 digit and ones digit are displayed by turns.) (Example) When 130 pulse; Pulse 0.5 secs. 0.5secs.
  • Page 69 SW2 setting Display detail Explanation for display Unit 0~327 (0~182degC) Discharge superheat on error occurring (When the temperature is 100degF or more, hundreds digit, tens digit and ones digit are 0~327 displayed by turns.) degF (Example) When 150degF; Cooling = TH4-TH6 0.5 secs.
  • Page 70 Display detail Explanation for display Unit SW2 setting 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 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.
  • 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 12-2. 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 74: Function Setting

    FUNCTION SETTING 13-1. 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 75 (2) Functions available when setting the unit number to 01-03 or AL (07 in case of wireless remote controller) • When setting functions for an indoor unit in an independent system, set the unit number to 01 referring to 4 setting the indoor unit number.
  • Page 76 13-1-1. 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 77 [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 78 13-1-2. Selecting functions using the wireless remote controller (Type C) Functions can be selected with the wireless remote controller. Function selection using wireless remote controller is available only for refriger- ant system with wireless function. Refrigerant address cannot be specified by the wireless remote controller. [Flow of function selection procedure] The flow of the function selection procedure is shown below.
  • Page 79 13-2. 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 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 13-3. Function selection of 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. “F:” blinks. 3 Press the button.

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

    MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 14-1. 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 83 14-2. 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 84 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 85 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 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 14-2-1. 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-HA30NHA PUZ-HA36NHA PUZ-HA30NHA2 PUZ-HA36NHA2 OPERATING PROCEDURE PHOTOS & ILLUSTRATION Top panel fixing screws Figure 1 1. Removing the service panel and top panel Top panel (1) Remove 3 service panel fixing screws (5 × 10) and slide the hook on the right downward to remove the service Service panel panel.
  • Page 93 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.) (2) Remove the top panel. (See Figure 1.) Heat (3) Disconnect the connectors TH7/6 (red) on the controller exchanger circuit board in the electrical parts box.
  • Page 94 OPERATING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), and linear expansion valve coil (LEV-A, LEV-B, LEV-C) (1) Remove the service panel. (See Figure 1.) (2) Remove the top panel. (See Figure 1.) [Removing the 4-way valve coil] (3) Remove 4-way valve coil fixing screw (M4 × 6). (4) Remove the 4-way valve coil by sliding the coil toward you.
  • Page 95 OPERATING PROCEDURE PHOTOS 11. Removing bypass valve coil (SV) and bypass valve Photo 10 Thermistor (1) Remove the service panel. (See Figure 1.) Bypass valve <Outdoor pipe> coil fixing screw (2) Remove the top panel. (See Figure 1.) (TH33) Replace filter (3) Remove 3 right side panel fixing screws (5 ×...
  • Page 96 Receiver leg fixing screws HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2007 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Mar. 2009 No.OCH426 REVISED EDITION-B PDF 7 New publication, effective Mar. 2009 Distributed in Oct. 2008 No.OCH426 REVISED EDITION-A PDF 7 Specifications subject to change without notice Distributed in Oct.

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