Mitsubishi Electronics PUY-A18NHA2 manual

SER VICE MANUAL SPLIT -TYPE, HEA T PUMP AIR CONDITIONERS SPLIT -TYPE, AIR CONDITIONERS CONTENTS 1. REFERENCE MANUAL ··································2 2. SAFETY PRECAUTION ··································3 3. FEA TURES ······························[...]

2 1-1. INDOOR UNIT Model name Service Ref. Service Manual No. PLA-A12/18/24/30/36/42BA PLA-A12/18/24/30/36/42BA 1 OCH420 OCB420 PCA-A24/30/36/42GA PCA-A24/30/36/42GA 2 OC368 PKA-A12/18GA PKA-A12/18GA 2 OC369 PKA-A12/18GAL PKA-A12/18GAL 2 PKA-A24/30/36FA PKA-A24/30/36FA 2 PKA-A24/30/36FAL PKA-A24/30/36FAL 2 1-2. TECHNICAL DATA BOOK Manual No. OCS13 [...]

3 2 SAFETY PRECAUTION Cautions for units utilizing refrigerant R410A 2-2. CAUTIONS RELA TED TO NEW REFRIGERANT Use new refrigerant pipes. Make sure that the inside and outside of refrige- rant piping is clean and it has no contamination such as sulfur hazardous for use, oxides, dirt, shaving particles, etc. In addition, use pipes with specified thi[...]

4 Gravimeter Unit [3] Service tools Use the below service tools as exclusive tools for R410A refrigerant. No. T ool name Specifications 1 Gauge manifold ·Only for R410A ·Use the existing fitting specifications . ·Use high-tension side pressure of 5.3MPa·G or over . 2 Charge hose ·Only for R410A ·Use pressure performance of 5.09MPa·G or over [...]

5 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 si[...]

6 3 FEA TURES CHARGELESS SYSTEM PRE-CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH A T SHIPMENT . (Max. 100ft, 30m (A42) / Max. 70ft, 20m (A12-36)) The refrigerant circuit with LEV(Linear Expansion V alve) and accumulator always control the optimal refrigerant level regardless of the length (A42: 100ft, 30m max. / A12-36: 70ft, 20m max. and 16ft[...]

7 4 SPECIFICA TIONS Service Ref. PUZ-A18NHA2 PUZ-A24NHA2 PUZ-A30NHA2 PUZ-A36NHA2 PUZ-A42NHA2 PUZ-A18NHA2-BS PUZ-A24NHA2-BS PUZ-A30NHA2-BS PUZ-A36NHA2-BS PUZ-A42NHA2-BS Power supply Phase Single Cycle 60Hz V oltage 208/230V M C A A 1 31 82 52 52 6 MOCP A 20 30 40 40 40 Breaker size A 15 25 30 30 30 External finish Munsell 3Y 7.8/1.1 Heat exchanger P[...]

8 Service Ref. PUY -A12NHA2 PUY -A18NHA2 PUY -A24NHA2 PUY -A30NHA2 PUY -A36NHA2 PUY -A42NHA2 PUY -A12NHA2-BS PUY -A18NHA2-BS PUY -A24NHA2-BS PUY -A30NHA2-BS PUY -A36NHA2-BS PUY -A42NHA2-BS Power supply Phase Single Cycle 60Hz V oltage 208/230V M C A A 1 31 31 82 52 52 6 MOCP A 15 20 30 40 40 40 Breaker size A 15 15 25 30 30 30 External finish Munse[...]

Piping Length ( one way ) Charged Factory Service Ref. 50ft 60ft 70ft 80ft 90ft 100ft 1 10ft 120ft 130ft 140ft 150ft 160ft 165ft 15m 18m 21m 24m 27m 30m 33m 37m 40m 43m 46m 49m 50m PUY -A12NHA2-BS PUY -A12NHA2 42 oz 44 oz 46 oz 48 oz 50 oz 52 oz - - - - - - - 46 oz 1.2 kg 1.2 kg 1.3 kg 1.4 kg 1.4 kg 1.5 kg - - - - - - - 1.3 kg PUY -A18NHA2-BS PUY -[...]

10 5-3. NOISE CRITERION CURVES 5ft 3.3ft MICROPHONE UNIT GROUND 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMA TE THRESHOLD OF HEARING FOR CONTINUOUS NOISE NC-60 NC-50 NC-40 NC-30 NC-20 NC-70 OCT A VE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µ bar) BAND CENTER FREQUENCIES, Hz PUY -A12/18NHA2 PUY -A12/18NHA2-BS PUZ-A18N[...]

11 5-4. ST ANDARD OPERA TION DA T A 5-4-1. Heat pump Representative matching PKA-A18GA PKA-A24F A PKA-A30F A PKA-A36F A PLA-A42BA Mode COOLING HEA TING COOLING HEA TING COOLING HEA TING COOLING HEA TING COOLING HEA TING T otal Capacity BTU/h 18 , 000 19 , 000 24 , 000 26 , 000 30 , 000 32 , 000 34 , 200 37 , 000 42 , 000 45 , 000 Input W 2 , 240 2 [...]

12 Representative matching PKA-A12GA PKA-A18GA PKA-A24F A PKA-A30F A PKA-A36F A PLA-A42BA Mode COOLING COOLING COOLING COOLING COOLING COOLING T otal Capacity BTU/h 12 , 000 18 , 000 24 , 000 30 , 000 34 , 200 42 , 000 Input W 1 , 210 2 , 240 2 , 650 4 , 400 5 , 030 4 , 600 Electrical circuit Indoor unit model PKA-A12GA PKA-A18GA PKA-A24F A PKA-A30[...]

13 OUTDOOR UNIT Unit : mm<inch> PUZ-A18NHA2 PUZ-A18NHA2-BS PUY -A12/18NHA2 PUY -A12/18NHA2-BS 1/2 conduit hole 144<5-21/32> 2-ø22.2<7/8> 22<7/8> 38<1-1/2> 241<9-1/2> Min.100mm<3-15/16> Piping and wiring connection can be made from the rear direction only. *1 In the place where short cycle tends to occur, c[...]

14 PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS Unit : mm<inch> PUY -A24/30/36NHA2 PUY -A24/30/36NHA2-BS Min. 10mm <3/8> Min. 10mm <3/8> Min. 100mm <3-15/16> Min. 500mm <19-11/16> 100mm Min. <3-15/16> 500mm Min. <19-11/16> 500mm Min. <19-11/16> 10mm Min. <3/8> Service space Max. 30mm<1-3/16> FOU[...]

15 PUZ-A42NHA2 PUZ-A42NHA2-BS Unit : mm<inch> PUY -A42NHA2 PUY -A42NHA2-BS Terminal Block Left ··· Power supply wiring Right ··· Indoor/Outdoor wiring Earth terminal Service panel Handle 1 2 1350<53-5/32> 23<29/32> 950<37-13/32> 1076<42-3/8> * 1 447<17-19/32> * 1 443<17-7/16> 371<14-19/32> 635&l[...]

16 TB1 MC MF1 21S4 63H TH3 TH4 TH6 TH7 TH8 LEV-A CY1,CY2 Terminal Block<Power Supply, Indoor/Outdoor> Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch Thermistor<Outdoor Pipe> Thermistor<Discharge> Thermistor<Outdoor 2-Phase Pipe> Thermistor<Outdoor> Thermistor<Heatsink> Electro[...]

17 P. B. C. B. CNF1 (WHT) MF1 MS 3~ 7 1 TRANS CNDC (PNK) 3 1 TH7/6 (RED) 63H (YLW) TH3 (WHT) TH4 (WHT) TH7 TH6 TH3 TH4 4 12 12 1 3 1 t ≈ t ° t ° t ° 63H LEV-A (WHT) LEV-A M LED1 LED2 6 1 CNVMNT (WHT) 3 1 CNDM (WHT) CN51 (WHT) 3 1 5 1 CNMNT (WHT) CNM (WHT) 5 1 3 5 SW7 SW6 SW1 SW9 CN31 1 w 1 w 1 SW5 SW8 SW4 SWP 14 X51 CNS (WHT) CNAC (WHT) SS (WH[...]

18 SYMBOL M-NET ADAPTER NAME TB7 CN5 CND CN2M SW1 SW11 SW12 LED1 LED2 LED3 LED4 LED5 Terminal Block<M-net connection> Connector<Transmission> Connector<Power Supply> Connector<M-NET communication> Switch<Status of communication> Switch<Address setting : 1st digit> Switch<Address setting : 2nd digit> LED<[...]

19 TB1 MC MF1,MF2 21S4 63H 63L TH3 TH4 TH6 TH7 TH8 LEV-A DCL Terminal Block<Power Supply, Indoor/Outdoor > Motor for Compressor Fan Motor Solenoid Valve (Four-Way Valve) High Pressure Switch Low Pressure Switch Thermistor<Outdoor Pipe> Thermistor<Discharge> Thermistor<Outdoor 2-Phase Pipe> Thermistor<Outdoor> Thermisto[...]

20 8 WIRING SPECIFICA TIONS 8-1. INDOOR UNIT POWER SUPPLIED FROM OUTDOOR UNIT (A-control application) The following connection patterns are available. The outdoor unit power supply patterns vary on models. 1:1 System Simultaneous twin system A Outdoor unit power supply B Wiring circuit breaker or isolating switch C Outdoor unit D Indoor unit/outdoo[...]

21 8-2. SEP ARA TE INDOOR UNIT/OUTDOOR UNIT POWER SUPPLIES The following connection patterns are available. The outdoor unit power supply patterns vary on models. 1:1 System S1 S2 L1 L2 GR GR 1 2 L1 L2 S1 S2 S3 S3 * Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units. * The optional indoor pow[...]

22 w The max. cable length may vary depending on the condition of installation, humidity or materials, etc. Indoor unit-Outdoor unit Outdoor power supply Max. 45m, 147ft 3 o A WG15(polar) Max. 50m, 164ft 3 o A WG13(polar) Max. 80m, 262ft 3 o AWG13(polar) and S3 separated Wire No. o Size Be sure to connect the indoor-outdoor connecting cables direct[...]

23 8-4. M-NET WIRING METHOD (Points to notice) (1) Outside the unit, transmission wires should stay away from electric wires in order to prevent electromagnetic noise from making an influence on the signal communication. Place them at intervals of more than 5cm. Do not put them in the same conduit tube. (2) T erminal block (TB7) for transmission wi[...]

24 8-4-3. Regulations in address settings In case of multiple grouping system, M-NET and refrigerant address settings should be done as explained in the above sec- tion. Set the lowest number in the group for the outdoor unit whose refrigerant address is “00” as its M-NET address. w Refrigerant addresses can be overlapped if they are in the dif[...]

25 9 REFRIGERANT SYSTEM DIAGRAM PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS Outdoor heat exchanger Thermistor (TH3) Thermistor (TH6) Distributor Service port (check) Accumulator Compressor Refrigerant GAS pipe 15.88 A ( { 5/8) Refrigerant LIQUID pipe 9.52 A ( { 3/8) Stop valve (with service port) 4-way valve Service port (check) High pressure protect sw[...]

26 Outdoor heat exchanger Thermistor (TH3) Thermistor (TH6) Distributor Service port (check) Accumulator Compressor Refrigerant GAS pipe 15.88 A ( { 5/8) Refrigerant LIQUID pipe 9.52 A ( { 3/8) Stop valve (with service port) Service port (check) High pressure protect switch Refrigerant flow in cooling Linear expansion valve Thermistor (TH4) Ball va[...]

27 2. Start and finish of test run • Operation from the indoor unit Execute the test run using the installation manual for the indoor unit. • Operation from the outdoor unit By using the DIP switch SW4 on the control board of outdoor unit, test run can be started and finished, and its operation mode (cooling/heating) can be set up. 1 Set the op[...]

28 10 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 summarize[...]

29 [TEST] button Pipe (liquid) temperature Displays the remaining test run time. "TEST RUN" and the currently selected operation mode are displayed altemately. A B C ° F 59 • In case of test run, the OFF timer will be activated, and the test run will automatically stop after 2 hours. • The room temperature display section shows the p[...]

30 ON/OFF TEMP FAN VANE MODE CHECK LOUVER TEST RUN AUTO STOP AUTO START h min RESET SET CLOCK TEST RUN COOL 7 5 6 2 3 , 4 T est 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 " . 1 T urn on the[...]

31 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. 1 [CHECK] and the refrigerant address are displayed on the temperature display, and the error code and unit n[...]

32 Transmission data from remote controller Transmission data on transmission path When the number of data errors is "02": D 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 [...]

33 [Procedure] 1. Press the CHECK button twice. 2. Press the temperature buttons. 3. Point the remote controller at the sensor on the indoor unit and press the HOUR button. 4. Point the remote controller at the sensor on the indoor unit and press the ON/OFF button. • "CHECK" lights, and refrigerant address "00" blinks. • Che[...]

34 [Output pattern A] Errors detected by indoor unit [Output pattern B] E9 *1 If the beeper does not sound again after the initial 2 beeps to confirm the self-check start signal was received and the OPERATION INDICATOR lamp does not come on, there are no error records. *2 If the beeper sounds 3 times continuously “beep, beep, beep (0.4 + 0.4 + 0.[...]

35 10-4. SELF-DIAGNOSIS ACTION T ABLE <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 None — 1 No voltage is supplied to terminal block(TB1) of outdoor unit. a) Power supply breaker is turned off. b) Cont[...]

36 Error Code Abnormal point and detection method Judgment and action Eb (6845) Miswiring of indoor/outdoor unit connecting wire (converse wiring or disconnection) Outdoor controller circuit board can automatically set the unit number of indoor units. Abnormal if the indoor unit number cannot be set within 4 minutes after power on because of miswir[...]

37 <Abnormalities detected while unit is operating> Error Code Abnormal point and detection method Judgment and action U1 (1302) 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 1 Short cycle of indoor unit 2 Clogged fi[...]

38 Thermistors Open detection Short detection Symbol Name TH3 TH6 TH7 TH8 – 40 : [-40˚F] or below – 40 : [-40˚F] or below – 40 : [-40˚F] or below – 27 : [-17˚F] or below 90 : [194˚F] or above 90 : [194˚F] or above 90 : [194˚F] or above 102 : [216˚F] or above Thermistor <Outdoor pipe> Thermistor <Outdoor 2-phase pipe> The[...]

39 UH (5300) Current sensor error • Abnormal if current sensor detects –1.5A to 1.5A during compressor operation. (This error is ignored in case of test run mode.) w This error is ignored in case of test run mode. • It’s abnormal for 38A the input current or 10 seconds continuous 34A or more. 1 Disconnection of compressor wiring 2 Defective[...]

40 Error Code Abnormal point and detection method Judgment and action UL (1300) Low pressure (63L worked) Abnormal if 63L is worked (under- 0.03MPa) during compressor operation. 63L: Low-pressure switch (A42N only) 1 Stop valve of outdoor unit is closed during operation. 2 Disconnection or loose connection of connector (63L) on outdoor controller b[...]

41 Error Code Abnormal point and detection method Judgment and action E9 (6841) Indoor/outdoor unit communication error (T ransmitting error) (Outdoor unit) (1) Abnormal if “0” receiving is detected 30 times continuously though outdoor con- troller circuit board has transmitted “1”. (2) Abnormal if outdoor controller circuit board could not[...]

42 Error Code Abnormal point and detection method Case Judgment and action A0 (6600) Address duplicate definition This error is displayed when transmission from the units of same address is detect- ed. Note) The address and attribute displayed at remote controller indicate the con- troller that detected abnormality . 1 There are 2 or more same addr[...]

43 A6 (6606) Communication error with communica- tion processor Defective communication between unit processor and transmission processor Note) The address and attribute display at remote controller indicate the con- troller that detected abnormality . 1 Data of transmission proces- sor or unit processor is not transmitted normally because of accid[...]

44 5. If displayed address or attribute is FRESH MASTER, Indoor unit detects abnormality when indoor unit transmitted to FRESH MAS- TER and there was no reply (ACK). 1 During sequential operation of indoor unit and FRESH MAS- TER of other refrigerant sys- tem, if indoor unit transmits to FRESH MASTER while out- door unit power supply of same refrig[...]

45 10-5. TROUBLESHOOTING BY INFERIOR PHENOMENA Phenomena Factor Countermeasure 1. Remote controller display does not work. 2. “PLEASE W AIT” display is remained on the remote controller . 3. When pressing the remote controller operation switch the OPERA TION display is appeared but it will be turned off soon. 1 After cancelling to select functi[...]

46 Phenomena Factor Countermeasure 7. Remote controller display works nor- mally and the unit performs heating operation, however , the capacity cannot be fully obtained. 1 Linear expansion valve fault Opening cannot be adjusted well due to linear expan- sion valve fault. 2 Refrigerant shortage 3 Lack of insulation for refrigerant piping 4 Filter c[...]

47 How long is “PLEASE W AIT” kept being displayed on the remote controller? 6 minutes or more 2 minutes or less 2 to 6 minutes NO NO YES YES Are any error codes displayed on the remote controller? Are any error codes displayed on the LED? Symptoms: “PLEASE W AIT” is kept being displayed on the remote controller . Check the display time of [...]

48 AC 187V to AC 253V? AC 187V to AC 253V? AC 187V to AC 253V? DC 12V to DC 16V? DC 12V to DC 16V? NO YES NO YES NO YES YES NO YES NO Check the voltage between S1 and S2 on the terminal block (TB4) of the indoor unit. Check the voltage among L1 and L2 on the terminal block (TB1) of the outdoor power circuit board. Check the voltage of indoor contro[...]

49 AC 187V to AC 253V? Are there looseness or disconnection of the indoor/ outdoor connecting wire? Is anything displayed? DC 17V to DC 28V? Is “E8” displayed? Can all the indoor unit be operated? Check the voltage between S2 and S3 on the terminal block of the outdoor unit. NO YES Not lighting. Blinking NO YES NO YES Not displayed. Displayed. [...]

50 DC 10V to DC 16V? YES NO Lighting Blinking Lighting Blinking Check the voltage of the terminal block (TB6) of the remote controller . Check the status of the LED2 after disconnecting the remote controller wire from the terminal block (TB5) of the indoor unit. • Defective remote controller • Replace the remote controller . • Breaking or poo[...]

51 1 The operating display of remote controller does not come on. Phone Calls From Customers How to Respond Note 1 Check if power is supplied to air conditioner . Nothing appears on the display unless power is supplied. 2 Unit cannot be restarted for a while after it’s stopped. 2 W ait around 3 minutes to restart unit. The air conditioner is in a[...]

52 Phone Calls From Customers How to Respond Note 1 Check the set temperature of remote controller . The outdoor unit cannot be operated if the set temperature is not appropriate. The outdoor unit operates in the following modes. COOL: When the set temperature is lower than the room temperature. HEA T : When the set temperature is higher than the r[...]

53 3 Air blows out for a while after HEA T operation is stopped. Phone Calls From Customers How to Respond Note 3 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 HEA T operation is stopped with the electric heater ON. [...]

54 Phone Calls F rom Customers How to Respond Note This is not a malfunction. This ma y occur when the operation gets star ted in the room of high humidity . A white mist is e xpelled from the indoor unit. Cooling; when pipes or piping joints are cooled, they get s weated and water drips down. Heating; water drips down from the heat e xchanger . * [...]

55 1 2 3 4 5 6 M Gray Orange Red Y ellow Black 1 2 3 4 5 6 M Parts name Check points Disconnect the connector then measure the resistance with a tester . (At the ambient temperature 10 : ~30 : , 50˚F~86˚F) Disconnect the connector then measure the resistance with a tester . (Winding temperature 20 : , 68˚F) Thermistor (TH3) <Outdoor pipe> [...]

56 Notes · High voltage is applied to the connecter (CNF1, 2) for the fan motor . Give 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. 1 2 Check method of [...]

57 Thermistor R0 = 15k ' ±3 % B constant = 3480 ± 2% t ( : ): R t =15exp{3480( 273+t – 273 )} T (˚F): R T =15exp{3480( 273+(T– 32)/1.8 – 273 )} 10-7. HOW TO CHECK THE COMPONENTS <Thermistor feature chart> Low temperature thermistors • Thermistor <Outdoor pipe> (TH3) • Thermistor <Outdoor 2-phase pipe> (TH6) • T[...]

58 <Output pulse signal and the valve operation> (2) Linear expansion valve operation A B C Open Extra tightning (about 32 pulse) Pulse number 500 pulse Opening a valve all the way Close V alve position (capacity) Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8 Closing a valve : 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 [...]

59 <Output pulse signal and the valve operation> (2) Linear expansion valve operation A B C Open Extra tightning (about 32 pulse) Pulse number 500 pulse Opening a valve all the way Close V alve position (capacity) Opening a valve : 8 → 7 → 6 → 5 → 4 → 3 → 2 → 1 → 8 Closing a valve : 1 → 2 → 3 → 4 → 5 → 6 → 7 → 8 [...]

60 Main body Lead wire Stopper Coil A Be sure to attach the stopper to pipe B. B A (3) How to attach and detach the coil of linear expansion valve (A12, 18) <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below . <How to detach the coil> Hold the lower part of the main body (show[...]

61 Main body Lead wire Stopper Coil A Be sure to attach the stopper . A (4) How to attach and detach the coil of linear expansion valve (A24, 30, 36, 42) <Composition> Linear expansion valve is separable into the main body and the coil as shown in the diagram below . <How to detach the coil> Hold the lower part of the main body (shown a[...]

62 10-8. EMERGENCY OPERA TION (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 outdoo[...]

63 (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 data Intake temperature (TH1) Indoor fluid pipe temperature (TH2) Indoor 2-phase pipe temperature (TH5) Set temperature Outdoor fluid pipe [...]

64 10-9. TEST POINT DIAGRAM Outdoor controller circuit board PUZ-A18/24/30/36/42NHA2 PUZ-A18/24/30/36/42NHA2-BS PUY -A12/18/24/30/36/42NHA2 PUY -A12/18/24/30/36/42NHA2-BS <CAUTION> TEST POINT 1 is high voltage. Communication power supply D71 V oltage 24V DC CNS S1-S2:A208/230V AC CNAC 2 to 4 : Power supply for out- door controller circuit boa[...]

65 Outdoor noise filter circuit board PUZ-A18NHA2 PUZ-A18NHA2-BS PUY -A12/18NHA2 PUY -A12/18NHA2-BS LO, NO V oltage of 208/230V AC is output. (Connect to the ACL) CN52C 52C relay signal (Connect to the outdoor controller circuit board (CN52C)) CN5 Primary current (Connect to the outdoor power circuit board (CN5)) CNAC1, CNAC2 208/230V AC (Connect t[...]

66 LO, NO V oltage of 208/230V AC is output. (Connect ACL) CN52C 52C relay signal (Connect to the outdoor controller circuit board (CN52C)) CN5 Primary current (Connect to the outdoor power circuit board (CN5)) CNAC1, CNAC2 208/230V AC (Connect to the outdoor controller circuit board (CNAC)) EI, E2 Connect to the earth E3 Connect to the earth Outdo[...]

67 CNAC1, CNAC2 208/230V AC (Connect to the outdoor controller circuit board (CNAC)) EI Connect to the earth LI, NI V oltage of 208/230V AC is input.(Connect to the terminal block(TB1)) E2 Connect to the earth LO, NO V oltage of 208/230V AC is output (Connect to the outdoor power circuit board (T ABS, T ABT)) RS1 CN52C 52C driving signal (Connect t[...]

68 CN2 Connect to the outdoor controller circuit board (CN2) 1 - 5 :Outdoor power circuit board ➔ T ransmitting signal to the outdoor controller circuit board (0-5V DC) 2 - 5 : Zero cross signal (0-5V DC) 3 - 4 : Not used 6 - 5 : 16V DC 7 - 5 : 16V DC Outdoor power circuit board PUZ-A18NHA2 PUZ-A18NHA2-BS PUY -A12/18NHA2 PUY -A12/18NHA2-BS 1 , 2 [...]

69 Outdoor power circuit board PUZ-A30/36/42NHA2 PUZ-A30/36/42NHA2-BS PUY -A30/36/42NHA2 PUY -A30/36/42NHA2-BS T ABP1 Connect to 52C T ABP2/SC-P2 Connect to ACTM CN4 Connect to the outdoor controller circuit board (CN4) CN2 Connect to the outdoor controller circuit board (CN2) 1 - 5 :T ransmitting signal to the outdoor controller circuit board (0~5[...]

70 N1 Non-connect lo Connect to the outdoor power circuit board (T ABN2) L1, L2 Connect to the DCL (Reactor) P Connect to the outdoor power circuit board (T ABP2) + DCL L1 L2 ACTM P Io N1 N2 (+) (–) Load Active filter module PUZ-A30/36/42NHA2 PUZ-A30/36/42NHA2-BS PUY -A30/36/42NHA2 PUY -A30/36/42NHA2-BS N2 Non-connect Connect to the outdoor power[...]

71 Switch T ype of switch Dip switch Push switch SW1 1 2 No. Function Effective timing Action by the switch operation Forced defrost w 1 Start Normal When compressor is working in heating operation. w 1 Abnormal history clear Refrigerant address setting When power supply ON Clear Normal Off or operating SWP 6 5 4 3 Under suspension Pump down Start [...]

72 1 2 3,4,5 6 3 4 5 6 1 2 3,4 1 2 3 4 5 6 7 8 6 ON OFF No. Function Effective timing Action by the switch operation No function Power failure automatic recovery w 2 No function Model select Max. Hz setting(cooling) Max. Hz setting(heating) No function Defrost setting No function Function switch No function Switch SW5 SW7 w 4 Dip switch SW9 SW6 SW5[...]

73 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 c[...]

74 <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. T ypes of abnormality can be indicated in details by connecting an optional part ‘A-Control Service T ool (P AC-SK52ST)’ to connector CNM on outdoor controller board. F3 F5 F9 — ?[...]

75 U2 U1 U8 UF UP UH U6 U3 U4 U5 U9 P1 P2 P9 P4 P5 P6 P8 Fb E1 E2 Indication Error Error code w 1 Outdoor controller board Contents Inspection method LED1 (Green) LED2 (Red) 3 blinking 1 blinking 2 blinking 3 blinking W 1 Error code displayed on remote controller W 2 Refer to service manual for indoor unit. 4 blinking 5 blinking 6 blinking 7 blinki[...]

76 <Outdoor unit operation monitor function> [When option part ‘A-Control Service T ool(P AC-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 T ool’. SW2 setting 1 ON 23[...]

77 SW2 setting 1 ON 23456 Display detail Explanation for display Unit Pipe temperature / Liquid(TH3) – 40~194 – 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. ˚F 1 ON 23456 1 ON 23456 1 ON 23456 1 ON 23456 Discharge tem[...]

78 SW2 setting 1 ON 23456 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. ˚F 1 ON 23456 1 ON 23456 1 ON 23456 1 O[...]

79 SW2 setting 1 ON 23456 Display detail Explanation for display Unit Capacity setting display Displayed as an outdoor capacity code Code display 1 ON 23456 1 ON 23456 Outdoor unit setting information Indoor pipe temperature / Liquid (TH2(1)) Indoor 1 – 38~190 Code display ˚F – 38~190 (– 39~88 : ) (When the temperature is 0ºF or less, “?[...]

80 1 ON 23456 degF Discharge superheat. SHd 0~327 Cooling = TH4-TH6 Heating = TH4-TH5 0~327 (0~182degC) (When the temperature is 100degF or more, hun- dreds digit, tens digit and ones digit are displayed by turns.) degF Sub cool. SC 0~234 Cooling = TH6-TH3 Heating = TH5-TH4 0~234 (0~130degC) (When the temperature is 100˚F or more, hundreds digit, [...]

81 SW2 setting Display detail Explanation for display Unit 1 ON 23456 % 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. 0~100 (When the capacity is 100%, hundreds digit, tens digit and ones digit are d[...]

82 SW2 setting Display detail Explanation for display Unit 1 ON 23456 Pulse LEV -A opening pulse on error occurring 0~480 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. ˚F Indoor room temperature (TH1) on error occurring 46~102 46~102 (8~3[...]

83 SW2 setting Display detail Explanation for display Unit degF 0~327 (0~182degC) (When the temperature is 100degF or more, hundreds digit, tens digit and ones digit are displayed by turns.) (Example) When 150degF; 0.5 secs. 0.5secs. 2 secs. Sub cool on error occurring. SC 0~234 Cooling = TH6-TH3 Heating = TH5-TH2 0~234 (0~130degC) (When the temper[...]

84 SW2 setting Display detail Explanation for display Unit Controlling status of compressor operating frequency 1 ON 23456 Code display The following code will be a help to know the operating status of unit. Display Compressor operating frequency control Display Compressor operating frequency control Primary current control Secondary current contro[...]

85 ● 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. 11-1.MAINTENANCE MODE OPERATION METHOD * If you are going to use t[...]

86 ● 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 B ] (5) Select the type of data to be displayed. After selecting, go to step (6). Compressor information MENU button [Display A ] Outdoor unit information ON/OFF[...]

87 11-2.GUIDE FOR OPERATION CONDITION Inspection item Result Power supply Loose con- nection Breaker Good Retightened Terminal block Outdoor Unit Good Retightened Indoor Unit Good Retightened (Insulation resistance) M " (Voltage) V 1 Accumulated operating time Time 2 Number of ON/OFF times Times 3 Current A 4 Refrigerant/heat exchanger tempera[...]

88 12 FUNCTION SETTING Function Settings Mode No. Setting No. : Initial setting (when sent from the factory) Remarks Power failure automatic recovery Indoor temperature detecting LOSSNA Y connectivity Power supply voltage Auto mode (only for PUZ) Frost prevention temperature Humidifier control Change of defrosting control Not available Available Av[...]

89 Function Settings No. Mode No. Setting : Initial setting ( Factory setting ) - : Not available 4-W ay cassette Ceiling suspended W all mounted PCA-GA PKA-GA(L) PKA-F A(L) Filter sign 100h 1 2500h 07 2 "Clean the filter" indicator is not displayed 3 Air flow Quiet 1- ( Fan speed ) Standard 08 2 - High ceiling 3- No.of air outlets 4 dire[...]

90 6 Select mode No. 02 (room temperature detection position). 7 Select setting No. 03 (remote controller fixed). (Use F and G .) 8 Enter the setting. (Press E .) Finished 0 End function display. (Press A and B at the same time.) Example: Selecting room temperature detection position YES YES NO NO 9 Selecting functions using the wired remote contro[...]

91 [Operating Procedure] 1 Check the setting items provided by function selection. If settings for a mode are changed by function selection, the functions of that mode will be changed accordingly. Check all the current settings according to steps 2 to 7 , fill in the "Check" column in Table 1, then change them as necessary. For initial se[...]

92 By setting unit number with the button, specified indoor unit starts performing fan operation. Detect which unit is assigned to which number using this function. If unit number is set to AL, all the indoor units in same refrigerant system start performing fan operation simultaneously . [Operating instructions] 1 Check the function settings. 2 Pr[...]

93 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 1.Change language ("CHANGE LANGUAGE") 2.Function limit ("FUNCTION SELECTION") 3.Mode selection ("MODE SELECTION&[...]

94 OFF no1 no2 OFF ON OFF ON OFF OFF CALL- ON OFF ON OFF ˚ C ˚ F PAR-21MAA ON/OFF FILTER CHECK OPERA TION CLEAR TEST TEMP . MENU BACK DA Y MONITOR/SET CLOCK ON/OFF English Ger man y Spanish Russian Italian Chinese F rench J apanese Item 3 Item 2 Item 1 Hold down the E button and press the D button for 2 seconds. Hold down the E button and press t[...]

95 12-3. Function selection of wireless remote controller TEMPERA TURE DISPLA Y : : / - - F SETTING (Change of temp mode from - - F to : : ) 1 Press the set button with something sharp at the end. MODEL SELECT blinks. 2 Press the button. “F:” blinks. 3 Press the button. “C:” blinks. 4 Press the set button with something sharp at the end. MO[...]

96 13-1. HOW TO "MONITOR THE OPERATION DATA" • Turn on the [Monitoring the operation data] A D C B (1) (2) (3) (4) (5) (6) (7) (1) Press the TEST button for 3 seconds so that [Maintenance mode] appears on the screen (at A ). (2) Press the CHECK button for 3 seconds to switch to [Maintenance monitor]. Note) It is not possible to switch t[...]

97 13-2. REQUEST CODE LIST * Certain indoor/outdoor combinations do not have the request code function; therefore, no request codes are displayed. Request code Request content Description (Display range) Unit Remarks 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47[...]

98 Request code Request content Description (Display range) Unit Remarks 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 Indoor unit-Control state Outdoor unit-Control state Compressor-Frequency control state Outdoor unit-Fan control st[...]

99 Request code Request content Description (Display range) Unit Remarks 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 ~ 146 147 148 149 150 151 152 Displays error history. (" - - " is displayed if no history is present.) Displays err[...]

100 Request code Request content Description (Display range) Unit Remarks 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 ~ 189 190 191 192 ~ 764 765 766 767 0 – 9999 0 – 9999 0 – 255 Fan control data 00 **" " **" indicates fan control data. "00 **" "**" indicates fan control data. Refer to 13-2-[...]

101 Frequency control state 2 Display Discharge temperature Condensation temperature Anti-freeze Heatsink temperature overheat prevention overheat prevention protection control overheat prevention 0 1 Controlled 2 Controlled 3 Controlled Controlled 4 Controlled 5 Controlled Controlled 6 Controlled Controlled 7 Controlled Controlled Controlled 8 Con[...]

102 [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 00 Display Correction value - (minus) – 1 00 2 [Actuator output state] (Request code :" 54" ) Data dis[...]

103 [Contact demand capacity] (Request code "61" ) Data display 00 0 Setting content [External input state] (Request code "62" ) Data display 00 0 Input state Input state : Input present Display Contact demand Silent mode Spare 1 Spare 2 input input input input 0 1 2 3 4 5 6 7 8 9 A b C d E F [Outdoor unit -– Capacity setting [...]

104 SW1, SW2, SW6, SW7 123456 000000 0 0 0 0 100000 0 0 0 1 010000 0 0 0 2 110000 0 0 0 3 001000 0 0 0 4 101000 0 0 0 5 011000 0 0 0 6 111000 0 0 0 7 000100 0 0 0 8 100100 0 0 0 9 010100 0 0 0 A 110100 0 0 0 b 001100 0 0 0 C 101100 0 0 0 d 011100 0 0 0 E 111100 0 0 0 F 000010 0 0 1 0 100010 010010 110010 001010 101010 011010 111010 000110 100110 01[...]

105 [Indoor unit – Model setting information] (Request code : 162 ) Data display 00 See the table on the right. Display Model setting state Display Model setting state 00 20 01 21 02 22 PKA-A·GA(L) PKA-A·FA(L) PCA-A·GA, PLA-A·BA PLA-A·AA 03 23 04 24 05 25 06 26 07 27 08 28 09 29 0A 2A 0b 2b 0C 2C 0d 2d 0E 2E 0F 2F 10 30 11 31 12 32 13 33 14 [...]

106 14 DISASSEMBL Y PROCEDURE OPERA TING PROCEDURE PHOTOS PUZ-A18NHA2 PUZ-A18NHA2-BS 1. Removing the top panel, service panel, front panel and back panel (1) Remove the top panel fixing screws (4 ✕ 10), one from the right and two from the left side, and detach the top panel. (2) Remove 1 service panel fixing screw (4 ✕ 10) and detach the servic[...]

107 Electrical parts box Controller circuit board (C.B.) Electrical parts box fixing screw T erminal block(TB1) OPERA TING PROCEDURE PHOTOS 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) and thermistor <Outdoor pipe> (TH3) (1) Remove the service panel. (See photo 1.) (2) Remove the top panel. (See photo 1.) (3) Remove the front[...]

108 OPERA TING PROCEDURE PHOTOS 5. Removing the thermistor <Outdoor> (TH7) (1) Remove the service panel. (See photo 1.) (2) Remove the top panel. (See photo 1.) (3) Disconnect the connector TH7 (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. (Se[...]

109 9. Removing linear expansion valve (1) Remove the service panel. (See photo 1.) (2) Remove the top panel. (See photo 1.) (3) Remove the front panel. (See photo 1.) (4) Remove the conduit cover and cord cover . (See photo 2.) (5) Remove the back panel. (See photo 1.) (6) Remove the electrical parts box. (See photo 5.) (7) Remove the linear expan[...]

110 OPERA TING PROCEDURE PHOTOS Photo 13 Photo 14 Compressor (MC) V alve bed Separator Separator fixing screw Compressor fixing nut Accumulator Accumulator Outlet Inlet 12. Removing the compressor (MC) (1) Remove the service panel. (See photo 1.) (2) Remove the top panel. (See photo 1.) (3) Remove the front panel. (See photo 1.) (4) Remove the cond[...]

111 OPERA TING PROCEDURE PHOTOS & ILLUSTRA TION PUZ-A24/30/36NHA2 PUZ-A24/30/36NHA2-BS 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[...]

112 OPERA TING PROCEDURE PHOTOS 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Disconnect the connectors, TH6 and TH7 (red), on the controller circuit board in the electrical parts box. (4) Loosen the clamp for the lead wire in the rear of the[...]

113 OPERA TING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), linear expansion valve coil (LEV -A) and bypass valve coil (SV) (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.) [Removing the 4-way valve coil] (4) Remove 4-way valve coil fixing screw [...]

114 OPERA TING PROCEDURE PHOTOS 10. Removing the bypass valve (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 3 right side panel fixing screws (5 ✕ 10) in the rear of the unit and remove the right side panel. (5) Remove the bypass valve coil. (S[...]

115 OPERA TING PROCEDURE PHOTOS 14. Removing the compressor (MC) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 2 front cover panel fixing screws (5 ✕ 10) and remove the front cover panel. (See figure 1.) (4) Remove 2 back cover panel fixing screws (5 ✕ 10) and remove the back cover panel. (5)[...]

116 OPERA TING PROCEDURE PHOTOS & ILLUSTRA TION PUZ-A42NHA2 PUZ-A42NHA2-BS 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 T op panel [...]

117 OPERA TING PROCEDURE PHOTOS Photo 4 4. Removing the thermistor <Outdoor 2-phase pipe> (TH6) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Disconnect the connectors, TH6 and TH7 (red), on the controller circuit board in the electrical parts box. (4) Loosen the clamp for the lead wire in the rea[...]

118 OPERA TING PROCEDURE PHOTOS 7. Removing the 4-way valve coil (21S4), and linear expansion valve coil (LEV -A) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) [Removing the 4-way v alv e c oil ] (3) Remove 4-way valve coil fixing screw (M4 ✕ 6). (4) Remove the 4-way valve coil by sliding the coil toward [...]

119 OPERA TING PROCEDURE PHOTOS 1 1. 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.) <Removing the reactor> (4) Remove 4 reactor fixing screws (4 ✕ 10) and remove the reactor . <Removing the capacitor&[...]

OPERA TING PROCEDURE PHOTOS 12. Removing the compressor (MC) (1) Remove the service panel. (See figure 1.) (2) Remove the top panel. (See figure 1.) (3) Remove 2 front cover panel fixing screws (5 ✕ 10) and remove the front cover panel. (See photo 3.) (4) Remove 2 back cover panel fixing screws (5 ✕ 10) and remove the back cover panel. (5) Remo[...]