SPLIT-TYPE, HEAT PUMP AIR CONDITIONERS Outdoor unit July 2011 No. OCH504 SERVICE MANUAL R410A Outdoor unit [model name] [Service Ref.] PUZ-HA30NHA4 PUZ-HA30NHA4 PUZ-HA36NHA4 PUZ-HA36NHA4 NOTE: • This manual describes only service data of the outdoor units. • RoHS compliant products have mark on the spec name plate. CONTENTS 1. REFERENCE MANUAL··································· 2 2. SAFETY PRECAUTION··································· 2 3.
1 REFERENCE MANUAL 1-1. INDOOR UNIT Model name Service Ref. PLA-A18/30/36BA4 PLA-A18/30/36BA4 Service Manual No. 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 2 SAFETY PRECAUTION 2-1. ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal, all supply circuits must be disconnected.
2-2. CAUTIONS RELATED TO NEW REFRIGERANT Cautions for units utilizing refrigerant R410A Use new refrigerant pipes. In case of using the existing pipes for R22, be careful with the followings. · Be sure to clean the pipes and make sure that the insides of the pipes are clean. · Change flare nut to the one provided with this product. Use a newly flared pipe. · Avoid using thin pipes.
[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. [2] Additional refrigerant charge When charging directly from cylinder · Check that cylinder for R410A on the market is syphon type.
2-3. 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.
3 FEATURES PUZ-HA30NHA4 PUZ-HA36NHA4 HIGH HEATING CAPACITY Performance about 60%UP (Btu/h) 40,000 Heating capacity Industry-first flash injection circuit is equipped, which enables to keep the equal capacity to the rating even when outside temperature is 5°F[-15°C]. HA36 38,000BTU/h A36 30,000 23,500BTU/h 0 -13°F [-25°C] -4°F [-20°C] 5°F [-15°C] 14°F [-10°C] 23°F [-5°C] 32°F [0°C] Outdoor W.B. temp.
4 SPECIFICATIONS Service Ref. Power supply MCA MOCP Breaker size External finish Heat exchanger Defrost method Crankcase heater Compressor Fan Sound level Protection devices Dimension Weight Refrigerant Phase Cycle Voltage A A A kW Model Motor output R.L.A. L.R.A. Starter type Fan(drive) % No. Fan motor output Fan motor Airflow Cooling Heating kW kW F.L.A. m3/min CFM dB dB W D H W D H mm mm mm in. in. in.
DATA 5 5-1. REFILLING REFRIGERANT CHARGE (R410A : oz, kg) Service Ref. PUZ-HA30NHA4 PUZ-HA36NHA4 Piping Length (one way) 150ft 160ft 165ft 46m 49m 50m 100ft 30m 110ft 33m 120ft 37m 130ft 40m 140ft 43m 194 oz 200 oz 206 oz 212 oz 218 oz 224 oz 230 oz 5.5 kg 5.7 kg 5.9 kg 6.0 kg 6.2 kg 6.4 kg 6.6 kg Factory Charged 180ft 55m 200ft 61m 210ft 64m 230ft 70m 245ft 75m 237 oz 242 oz 254 oz 260 oz 272 oz 280 oz 195 oz 6.7 kg 6.9 kg 7.2 kg 7.4 kg 7.7 kg 7.9 kg 5.
5-4. STANDARD OPERATION DATA PKA-A30KA4 Representative matching Mode Total Capacity Input BTU/h W HEATING COOLING HEATING 30,000 2,500 32,000 2,930 33,500 2,790 38,000 3,410 Electrical circuit Indoor unit model PKA-A36KA PKA-A30KA Phase Cycle Single Voltage 230V 60Hz Current 0.36A Outdoor unit model 0.57A PUZ-HA36NHA2 PUZ-HA30NHA2 Phase Cycle Single Voltage 230V 60Hz 11.1 A 13.0 A 12.2 A 15.4 A Discharge pressure MPa 2.51 2.92 2.58 2.94 Suction pressure MPa 0.88 0.
Min. 150mm <5-29/32> Min. 10mm <3/8> Service space Min. 10mm<3/8> :92 8> <3-5/ 92<3-5/8> 65<2-9/16> Front piping hole (Knockout) Front trunking hole 40<1-9/16> (Knockout) 45<1-25/32> Min. 500mm <19-11/16> 73<2-7/8> 23<29/32> 19<3/4> :92 <3-5/8 > 40<1-9/16> 92<3-5/8> 45<1-25/32> 2-:22.2<7/8> Rear piping hole (Knockout) 74<2-19/32> 40<1-9/16> Rear trunking hole (Knockout) Handle 1/2 Conduit attachment When installing the conduit. Set the attachment to the inner side of each panel.
WIRING DIAGRAM [LEGEND] SYMBOL TB1 MC MF1, MF2 21S4 63H 63L TH3,TH32,TH33 TH4 TH6 TH7 TH8 LEV-A, LEV-B,LEV-C DCL ACTM CB CY1, CY2 PUZ-HA36NHA4 NAME Terminal Block Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch Low Pressure Switch Thermistor Thermistor Thermistor Thermistor Thermistor Electronic Expansion Valve Reactor Active Filter Module Main Smoothing Capacitor Capacitor
WIRING SPECIFICATIONS 8 8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT The following connection patterns are available. The outdoor unit power supply patterns vary on models.
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.
8-3. INDOOR – OUTDOOR CONNECTING CABLE Wire No. % Size Max. 80m, 262ft Max. 50m, 164ft Max. 45m, 147ft Indoor unit-Outdoor unit 3 % AWG13(polar) and S3 separated 3 % AWG15(polar) 3 % AWG13(polar) + The Max. cable length may vary depending on the condition of installation, humidity or materials, etc. Outdoor power supply Wire No. % Size Max. 120m, 393ft 2 % Min. AWG22 Indoor/Outdoor separate power supply Indoor unit-Outdoor unit + The optional indoor power supply terminal kit is necessary.
● M-NET wiring (1) Use 2-core x 1.25mm2 [AWG16] shield wire for electric wires. (Excluding the case connecting to system controller.) (2) 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. Peel the shield wire, twist the shield part to a string and connect it to S terminal.
9 REFRIGERANT SYSTEM DIAGRAM PUZ-HA30NHA4 PUZ-HA36NHA4 unit : mm (inch) Heat exchanger Refrigerant GAS pipe connection :15.88(5/8) Solenoid valve (Four-way valve) Ball valve Strainer #50 Charge plug (High pressure) Charge plug (Low pressure) Muffler Thermistor TH32 (Outdoor pipe) Strainer #100 Strainer #100 Linear expansion valve B Refrigerant LIQUID pipe connection :9.
10 TROUBLESHOOTING 10-1. TROUBLESHOOTING 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. Check the contents below before investigating details.
Operating procedures "TEST RUN" and the currently selected operation mode are displayed altemately. 1. Turn on the main power supply. Displays the remaining test run time. F 2. Press TEST button twice. The TEST RUN appears on the screen. 3. Press OPERATION SWITCH button. Cooling mode: Check if cool air blows and water is drained. Heating mode: Check if warm air blows. (It takes a little while until warm air blows.) 4. Press AIR DIRECTION button. Check for correct motion of auto-vanes. 5.
Test run [for IR wireless remote controller] COOL 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". 1 Turn on the main power to the unit. TEST RUN 2 Press the TEST RUN button twice continuously. (Start this operation from the turned off status of remote controller display.) TEMP ON/OFF TEST RUN and current operation mode are displayed.
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. (If the outdoor unit is malfunctioning, the unit number will be "00".
Press the ON/OFF button twice within 3 seconds. The self-diagnosis address or refrigerant address will blink. When the error history is reset, the display will look like the one shown below. However, if you fail to reset the error history, the error content will be displayed again. Cancel self-diagnosis. Self-diagnosis can be cancelled by the following 2 methods. Press the CHECK Press the button twice within 3 seconds. ON/OFF button.
10-3-4. Malfunction-diagnosis method by IR wireless remote controller When a malfunction occurs to air conditioner, both indoor unit and outdoor unit will stop and operation lamp blinks to inform unusual stop. [Procedure] Refrigerant address display CHECK CHECK display Temperature button TEMP ON/OFF 1. Press the CHECK button twice. • "CHECK" lights, and refrigerant address "00" blinks.
• Refer to the following tables for details on the check codes. [Output pattern A] Beeper sounds OPERATION INDICATOR lamp blink pattern Beep Beep Beep Beep Off Beep 1st 2 nd 3 rd nth On On On On Beep Beep 1st Off On 2 nd · · · Repeated On 0.5 sec. Approx. 2.5 sec. 0.5 sec. 0.5 sec. Self-check Approx. 2.5 sec. 0.5 sec. 0.5 sec. 0.5 sec.
10-4. SELF-DIAGNOSIS ACTION TABLE Error Code Abnormal point and detection method (Note 1) Refer to indoor unit section for code P and code E. Case Judgment and action 1 No voltage is supplied to termi- 1 Check following items. nal block(TB1) of outdoor unit. a) Power supply breaker a) Power supply breaker is b) Connection of power supply terminal turned off.
Error Code F5 (5201) F9 (4119) EA (6844) Eb (6845) EC (6846) Abnormal point and detection method Case Judgment and action 63H connector open 1 Disconnection or contact failure Abnormal if 63H connector circuit is open of 63H connector on outdoor for 3 minutes continuously after power supcontroller circuit board ply. 2 Disconnection or contact failure 63H: High-pressure switch of 63H 3 63H is working due to defective parts.
Error Code Abnormal point and detection method High pressure (High-pressure switch 63H worked) Abnormal if high-pressure switch 63H worked ( w ) during compressor operation. w 4.15 MPa [602PSIG] 63H: High-pressure switch U1 (1302) High discharging temperature (1) Abnormal if discharge temperature thermistor (TH4) exceeds 125: [257˚F] or 110: [230˚F] continuously for 5 minutes.
Error Code U3 (5104) Abnormal point and detection method Open/short circuit of discharge temperature thermistor (TH4) Abnormal if open (3: [37˚F] or less) or short (217: [422˚F] or more) is detected during compressor operation. (Detection is inoperative for 10 minutes of compressor starting process and for 10 minutes after and during defrosting.) Case Judgment and action 1 Disconnection or contact failure 1 Check connection of connector (TH4) on the outdoor controller circuit board.
Error Code U8 (4400) Abnormal point and detection method Overvoltage or voltage shortage and synchronous signal to main circuit U9 (4220) UF (4100) Case Outdoor fan motor 1 Failure in the operation of the The outdoor fan motor is considered to be DC fan motor abnormal if the rotational frequency of fan 2 Failure in the outdoor circuit motor is abnormal when detected during controller board operation.
Error Code Abnormal point and detection method Abnormal low pressure (63L worked) Abnormal if 63L is worked (under -0.03MPa[-4PSIG]) during compressor operation. 63L: Low-pressure switch UL (1300) UP (4210) 1 Stop valve of outdoor unit is closed during operation.
Error Code E3 or E5 E6 (6840) Abnormal point and detection method Case Remote controller transmission error(E3)/signal receiving error(E5) 1 Abnormal if remote controller could not find blank of transmission path for 6 seconds and could not transmit. (Error code: E3) 2 Remote controller receives transmitted data at the same time, compares the data, and when detecting it, judges different data to be abnormal 30 continuous times.
Error Code Ed (0403) Abnormal point and detection method Case Judgment and action Serial communication error 1 Breaking of wire or contact 12 Check connection of each connector CN2 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 and outdoor power circuit board is defeccircuit board and the outdoor board. tive.
Error Code A0 (6600) A2 (6602) A3 (6603) A6 (6606) Abnormal point and detection method (Note) “Indoor unit” in the text indicates M-NET board in outdoor unit. Case Address duplicate definition 1 There are 2 or more same This error is displayed when transmission address of controller of outfrom the units of same address is detected. door unit, indoor unit, FRESH Note) The address and attribute displayed MASTER, or LOSSNAY.
Error Code A7 (6607) Abnormal point and detection method Case NO ACK signal 1. Transmitting side controller detects abnormal if a message was transmitted but there is no reply (ACK) that a message was received. Transmitting side detects abnormality every 30 seconds, 6 times continuously. Note) The address and attribute displayed at remote controller is indicate the controller that did not reply (ACK). Common factor that has no relation with abnormality source.
From the previous page. Error Code Abnormal point and detection method Case Judgment and action 4. If displayed address or attribute is Same as mentioned in “A7” of the previous 1 During group operation with indoor unit of multi- refrigerant page. remote controller, system, if indoor unit transmit Indoor unit detects abnormality when to remote controller while outindoor unit transmitted to remote controldoor unit power supply of one ler and there was no reply (ACK).
Error Code A8 (6608) Abnormal point and detection method Case M-NET NO RESPONSE 1 Transmitting condition is repeated fault because of Abnormal if a message was transmitted noise and the like. and there were reply (ACK) that message 2 Extension of transmission wire was received, but response command voltage and signal is caused does not return. Transmitting side detects by over-range transmission abnormality every 30 seconds, 6 times wire. continuously.
Factor Phenomena Countermeasure 4. 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 operating. Operation display is indicated on the IR wireless remote controller. 5. When operating by the IR wireless remote controller, beep sound is heard, however, unit does not start operating.
Symptoms: “PLEASE WAIT” is kept being displayed on the remote controller. Diagnosis flow Cause Inspection method and troubleshooting Check the display time of “PLEASE WAIT” after turning on the main power. 6 minutes or more How long is “PLEASE WAIT” kept being displayed on the remote controller? 2 minutes or less 2 to 6 minutes Are any error codes displayed on the remote controller? Check the LED display of the outdoor controller circuit board.
Symptoms: Nothing is displayed on the remote controller Diagnosis flow Cause LED display of the indoor controller board LED1 : LED2 : LED3 : Inspection method and troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit. AC 187V to AC 253V? YES NO Check the voltage among L1 and L2 on the terminal block (TB1) of the outdoor power circuit board. AC 187V to AC 253V? NO • Troubles concerning power supply • Check the power wiring to the outdoor unit.
Symptoms: Nothing is displayed on the remote controller Diagnosis flow Cause LED display of the indoor controller board LED1 : LED2 : LED3 : or Inspection method and troubleshooting Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit. NO AC 187V to AC 253V? YES Not lighting. Check the status of the indoor controller board LED3 display. Check the looseness or disconnection of the indoor/outdoor connecting wire.
Symptoms: Nothing is displayed on the remote controller Diagnosis flow Cause LED display of the indoor controller board LED1 : LED2 : or LED3 : — Inspection method and troubleshooting Check the voltage of the terminal block (TB6) of the indoor unit. DC 10V to DC 16V? YES • Defective remote controller • Replace the remote controller. NO Check the status of the LED2.
• Before repair Frequent calling from customers Phone Calls From Customers Unit does not operate at all. The operating display of remote controller does not come on. Unit cannot be restarted for a while after it’s stopped. Remote controller How to Respond Note Check if power is supplied to air conditioner. Nothing appears on the display unless power is supplied. Wait around 3 minutes to restart unit. The air conditioner is in a state of being protected by the microcomputer’s directive.
Phone Calls From Customers How to Respond 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. HEAT: When the set temperature is higher than the room temperature. Note Check if filters are not dirty and clogged.
Phone Calls From Customers How to Respond Something is wrong with the blower….. Air blows out for a while after HEAT operation is stopped. This is not a malfunction. The blower is operating just for cooling down the heated-up air conditioner. This will be done within 1 minute. This control is conducted only when the HEAT operation is stopped with the electric heater ON. Something is wrong with the airflow direction…. The airflow direction is changed during COOL operation.
Phone Calls From Customers How to Respond 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 unit. Cooling; when pipes or piping joints are cooled, they get sweated and water drips down. Heating; water drips down from the heat exchanger. * Use optional parts “Drain Socket” and “Drain pan” if these water needs to be collected and drained out for once.
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. (Ambient temperature 10 ~30 , 50°F~86°F) Thermistor (TH4) Normal Abnormal Thermistor (TH6) TH4 160k ~410k TH3 Thermistor (TH7) TH6 TH7 Thermistor (TH8) Thermistor (TH32) Thermistor (TH33) 4.3k ~9.
Check method of DC fan motor (fan motor / outdoor controller circuit board) Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor. Pay attention to the service. · Do not pull out the connector (CNF1, 2) for the motor with the power supply on. (It causes trouble of the outdoor controller circuit board and fan motor.) Self check Symptom : The outdoor fan cannot turn around. Fuse check Check the fuse (F5) on outdoor controller board.
10-7. HOW TO CHECK THE COMPONENTS 50 Low temperature thermistors (TH3) (TH6) (TH7) (TH32) (TH33) 40 Resistance (k ) • Thermistor • Thermistor • Thermistor • Thermistor • Thermistor Thermistor R0 = 15k' ± 3% B constant = 3480 ± 2% 1 1 t (:): Rt =15exp{3480( 273+t – 273 )} 1 1 T (˚F): RT =15exp{3480( 273+(T– 32)/1.8 – 273 )} 0:[32˚F] 10:[50˚F] 20:[68˚F] 25:[77˚F] 15k' 9.6k' 6.3k' 5.
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.
(3) How to attach and detach the coil of linear expansion valve Linear expansion valve is separable into the main body and the coil as shown in the diagram below. Stopper Main body Coil Lead wire 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. Be sure to detach the coil holding main body firmly. Otherwise pipes can bend due to pressure.
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 operation switch (SWE) to ON and short-circuiting the connector (CN31) on outdoor controller board. ●When following abnormalities occur, emergency operation will be available.
(5) Operation data during emergency operation During emergency operation, no communication is performed with the indoor unit, so the data items needed for operation are set to the following values: Operation mode Operation data Remarks COOL HEAT Intake temperature (TH1) 27 , 81°F 20.
10-9. TEST POINT DIAGRAM Outdoor controller circuit board PUZ-HA30NHA4 PUZ-HA36NHA4 TEST POINT1 is high voltage.
Outdoor noise filter circuit board PUZ-HA30NHA4 PUZ-HA36NHA4 CN52C 52C driving signal (Connect to the outdoor controller circuit board (CN52C).
Outdoor power circuit board PUZ-HA30NHA4 PUZ-HA36NHA4 CN2 Connect to the outdoor controller circuit board (CN2) 1-5:Transmitting signal to the outdoor controller circuit board (0~5V DC) 2-5:Zero cross signal (0~5V DC) 3-4:18V DC 6-5:16V DC 7-5:16V DC Brief check of POWER MODULE W Usually, they are in a state of being short-circuited if they are broken. Measure the resistance in the following points (connectors, etc.). If they are short-circuited, it means that they are broken. 1.
Active filter module PUZ-HA30NHA4 PUZ-HA36NHA4 P Connect to the outdoor power circuit board(TABP2) L1, L2 Connect to the DCL(Reactor) N1 Non-connect Lower side Upper side + N2 Non-connect Connect to the outdoor power circuit board (TABP1) Connect to the outdoor power circuit board(CNAF) 1 : GND 2-1 : 18V DC 3-1 : Control signal 4, 5 : Not used 6-1 : Control signal Connect to the outdoor power circuit board(TABN1) Connection and internal circuit diagram DCL L1 L2 (+) ACTM P N1 N2 (- ) (–) an
10-10. FUNCTION OF SWITCHES, CONNECTORS AND JUMPERS (1) Function of switches Type of Switch No. switch Action by the switch operation Function ON OFF 1 Forced defrost +1 Start Normal When compressor is working in heating operation.
Type of Switch No.
Special function (a) Low-level sound priority mode (Local wiring) Unit enters into Low-level sound priority mode by external signal input setting. Inputting external signals to the outdoor unit decreases the outdoor unit operation sound 3 to 4 dB lower than that of usual. Adding a commercial timer or on-off switch contactor setting to the CNDM connector which is optional contactor for demand input located on the outdoor controller board enables to control compressor operation frequency.
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.
Indication Outdoor controller board LED1 (Green) LED2 (Red) Error Contents 3 blinking 1 blinking Abnormality of shell thermostat and discharging temperature (TH4) Abnormality of superheat due to low discharge temperature Abnormal high pressure (High 2 blinking pressure switch 63H worked.) Abnormal low pressure (Low pressure switch 63L worked.
[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”.
SW2 setting ON Explanation for display Display detail Pipe temperature / Liquid(TH3) – 40~194 1 2 3 4 5 6 – 40~194 (– 40~90:) (When the coil thermistor detects 0˚F or below, “–” and temperature are displayed by turns.) (Example) When -10˚F; 0.5 secs. 0.5secs. 2 secs. Unit ˚F 10 Discharge temperature (TH4) 37~327 ON 1 2 3 4 5 6 ON 37~327 (3~164:) (When the discharge thermistor detects 100˚F or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 105˚F; 0.
SW2 setting ON Display detail Explanation for display Unit Pipe temperature / Liquid(TH3) on error occurring – 40~194 – 40~194 (– 40~90:) (When the coil thermistor detects 0˚F or below, “–” and temperature are displayed by turns.) (Example) When –15˚F; 0.5 secs. 0.5secs. 2 secs. 15 ˚F Compressor temperature (TH4) or discharge temperature (TH4) on error occurring 37~327 37~327 (3~164:) (When the temperature is 100˚F or more, the hundreds digit, tens digit and ones digit are displayed by turns.
SW2 setting Explanation for display Display detail The number of connected indoor units ON 0~3 (The number of connected indoor units are displayed.
SW2 setting ON Explanation for display Display detail Indoor setting temperature 62~86 62~86 (17~30:) Outdoor pipe temperature / 2-phase (TH6) -38~190 -38~190 (-39~88:) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.) Outdoor outside temperature (TH7) -38~190 -38~190 (-39~88:) (When the temperature is 0˚F or less, “–” and temperature are displayed by turns.
SW2 setting ON 1 2 3 4 5 6 ON Explanation for display Display detail Capacity save 0~100 When air conditioner is connected to M-NET and capacity save mode is demanded, “0”~”100” is displayed. When there is no setting of capacity save “100” is displayed. Error postponement code history (2) of outdoor unit 0~100 (When the capacity is 100%, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 100%; 0.5 secs. 0.5secs. 2 secs.
SW2 setting Explanation for display Display detail LEV-A opening pulse on error occurring 0~480 ON 1 2 3 4 5 6 ON Indoor room temperature (TH1) on error occurring 46~102 0~480 (When it is 100 pulse or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 130 pulse; 0.5 secs. 0.5secs. 2 secs. 1 30 Unit Pulse 46~102 (8~39°C) ˚F 1 2 3 4 5 6 ON Indoor pipe temperature / Liquid (TH2) on error occurring -38~190 1 2 3 4 5 6 ON Indoor pipe temperature / Cond./ Eva.
SW2 setting ON 1 2 3 4 5 6 Display detail Discharge superheat on error occurring SHd 0~327 Cooling = TH4-TH6 Heating = TH4-TH5 Sub cool on error occurring. SC 0~234 ON Cooling = TH6-TH3 Heating = TH5-TH2 1 2 3 4 5 6 Thermo-on time until error stops 0~999 ON 1 2 3 4 5 6 U9 Error status during the Error postponement period ON 1 2 3 4 5 6 Explanation for display Unit 0~327 (0~182degC) (When the temperature is 100degF or more, hundreds digit, tens digit and ones digit are displayed by turns.
SW2 setting Explanation for display Display detail Controlling status of compressor operating frequency Unit The following code will be a help to know the operating status of unit. •The tens digit Display Compressor operating frequency control 1 Primary current control 2 Secondary current control ON •The ones digit (In this digit, the total number of 1 2 3 4 5 6 activated control is displayed.
11 ● ● 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.
● Data measurement When the operation is stabilized, measure operation data as explained below. (4) Press the [TEMP] buttons ( and ) to select the desired refrigerant address. [Screen ] (5) Select the type of data to be displayed. After selecting, go to step (6).
11-2. GUIDE FOR OPERATION CONDITION Outdoor Unit Good Retightened Indoor Unit Good Retightened V Accumulated operating time CleanliTemperature ness Temperature Cleanliness Enter the temperature differences between , , and into the graph given below. Operation state is determined according to the plotted areas on the graph. For data measurements, set the fan speed to "Hi" before activating maintenance mode.
12 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.)
Function selections Mode No. : Initial setting Wired remote controller Setting No.(2) Functions available when setting the unit number to 01-03 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. • When setting functions for a simultaneous twin indoor unit system, set the unit number to 01 to 03 for each indoor unit in case of selecting different functions for each unit referring to 4 setting the indoor unit number.
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 to . Setting number Refrigerant address Unit number Mode number Modes 01 to 14 can be activated by pressing buttons and simultaneously, and modes 15 to 28 by pressing buttons and .
[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 to , 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.
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] Check the function selection setting.
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 2 Item 1 Language setting to display 1.Change language ("CHANGE LANGUAGE") (1) Operation function limit setting (operation lock) ("LOCKING FUNCTION") 2.
[Function selection flowchart] Setting language (English) Normal display (Display when the air conditioner is not running) Hold down the button and press the button for 2 seconds. Hold down the button and press the button for 2 seconds. Remote controller function selection mode Item 1 Change Language Item 2 English Press the operation mode button. Press theTIMER MENU button. Press theTIMER ON/OFF button. Dot display German Spanish TEMP.
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. 2 Press the 3 Press the AUTO START button. “F:” blinks. button. “C:” blinks. 4 Press the set button with something sharp at the end. MODEL SELECT is lighted for 3 seconds, then turned off.
13 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" (7) (3) (5) (1) (2) (6) (4) (1) Press the TEST 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 ).
13-2. REQUEST CODE LIST Request code * Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Description Request content (Display range) Unit 0 Operation state Refer to 14-2-1. Detail Contents in Request Code.
Request code Description Request content (Display range) Unit 50 Indoor unit-Control state Refer to 14-2-1.Detail Contents in Request Code. – 51 Outdoor unit-Control state Refer to 14-2-1.Detail Contents in Request Code. – 52 Compressor-Frequency control state Refer to 14-2-1.Detail Contents in Request Code. – 53 Outdoor unit-Fan control state Refer to 14-2-1.Detail Contents in Request Code. – 54 Actuator output state Refer to 14-2-1.Detail Contents in Request Code.
Request code Description Request content (Display range) Unit 103 Error history 1 (latest) Displays error history. (" - - " is displayed if no history is present.) Code 104 Error history 2 (second to last) Displays error history. (" - - " is displayed if no history is present.) Code 105 Error history 3 (third to last) Displays error history. (" - - " is displayed if no history is present.
Request code Description Request content (Display range) Unit Remarks 153 154 155 Indoor-Fan operating time (After filter is reset) Indoor-Total operating time (Fan motor ON time) 0 – 9999 1 hour 0 – 9999 10 hours 156 0 – 255 Fan control data – For indoor fan phase control "00 **" "**" indicates fan control data. – For indoor fan pulsation control "00 **" "**" indicates fan control data.
13-2-1.
[Fan control state] (Request code :" 53 ") Data display 0 0 Fan step correction value by heatsink temperature overheat prevention control Fan step correction value by cool condensation temperature overheat prevention control Display - (minus) 0 1 2 Correction value –1 0 +1 +2 [Actuator output state] (Request code :"54") Data display 0 0 Actuator output state Actuator output state Actuator output state Actuator output state Display SV1 0 1 ON 2 3 ON 4 5 ON 6 7 ON 8 9 ON A b ON C d E
[Contact demand capacity] (Request code "61") Data display 0 0 0 Setting content Setting content Display Setting value 0 1 2 3 0% 50% 75% 100% Setting SW7-1 SW7-2 ON ON ON ON Silent mode input Spare 1 input [External input state] (Request code "62") Data display 0 0 0 Input state Input state Display Contact demand input 0 1 2 3 4 5 6 7 8 9 A b C d E F [Outdoor unit -–Capacity setting display] (Request code : "70") Data display 9 10 11 14 20 25 Capacity 12 18 24 30 36 42 [Outdoor u
[Outdoor unit switch setting display (SW1 to SW10, except SW3)] Request codes: 73 to 82 0: Switch OFF 1: Switch ON SW1, SW2, SW6, SW7 Data display 1 2 3 4 5 6 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1
[Indoor unit – Model setting information] (Request code : 162) Data display 0 Display 0 See the table on the right.
14 DISASSEMBLY PROCEDURE PUZ-HA30NHA4 PUZ-HA36NHA4 PHOTOS & ILLUSTRATION OPERATING PROCEDURE 1. Removing the service panel and top panel (1) Remove 3 service panel fixing screws (5 × 10) and slide the hook on the right downward to remove the service panel. (2) Remove screws (3 for front, 3 for rear/5 × 10) of the top panel and remove it. Figure 1 Top panel fixing screws Top panel Service panel Fan grille fixing screws Slide Fan grille Grille fixing screws Service panel fixing screws 2.
OPERATING PROCEDURE PHOTOS 4. Removing the thermistor (TH6) and thermistor (TH7) (1) Remove the service panel. (See Figure 1.) (2) Remove the top panel. (See Figure 1.) (3) Disconnect the connectors TH7/6 (red) on the controller circuit board in the electrical parts box. (4) Loosen the clamp for the lead wire in the rear of the electrical parts box. (5) Pull out the thermistor (TH6) and thermistor (TH7) from the sensor holder.
PHOTOS OPERATING PROCEDURE 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. (5) Disconnect the connector 21S4 (green) on the controller circuit board in the electrical parts box.
OPERATING PROCEDURE PHOTOS 11. Removing the reactor (DCL) and capacitor (CE) (1) Remove the service panel. (See Figure 1.) (2) Remove the top panel. (See Figure 1.) (3) Remove the electrical parts box. (See Photo 3.) (4) Remove 4 reactor fixing screws (4 × 10) and remove the reactor. (4) Remove 2 capacitor band fixing screws (4 × 10) and remove the capacitor. w The reactor and capacitor are attached to the rear of the electrical parts box.
HEAD OFFICE : TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN CCopyright 2011 MITSUBISHI ELECTRIC ENGINEERING CO., LTD. Distributed in Jul. 2011 No. OCH504 Made in Japan New publication, effective Jul.
