Home

NHA6 Service Manual

Contents

1. 63H LEVA CNS TH33 TH32 TH7TH6 TH3 d 5 WHT i 1 5 7 1 t D t t t PauU SI 3 1 3 3 555 ES CICEXII 566 55558 cm rm em M NET ADAPTER 13 12 1 4 12 1 6 1 9 1 23 TH33 TH32 TH7 6 TH3 LEV A CNVMNT 5 Es m 2 YLW BLK RED WHT WHT WHT WHT WHT a s 1 55 5005500000005 zm 1 3 1 CNM g 188 63 WHT GI CN31 YLW CN52C a RED lt ie WHT 12 203 1 WHT 7 BE lo TRANS 99999 09 ES 7 334 2 op M NET ADAPTER zE e a 2z SYMBOL NAME ES 1 al TB7 Terminal Block lt M NET connection gt CNAG 5 CN5 Connector lt Transmiss
2. A 400 lt 15 25 32 gt 347 5 lt 13 11 16 gt 33 lt 1 5 16 gt drain hole Air intake iS e am mM T A 27 N i e Ge 14 Air intake gt 3 M im 8 45 4 lt 1 25 32 gt A Air discharge 40 lt 1 9 16 gt E 5 e 18 lt 23 32 gt 23 lt 29 32 gt Service panel Service panel for charge plug 2 22 2 lt 7 8 gt 1 2 conduit hole Handle J Connection for liquid pipe E FLARE 46 35 1 4 al E amp 95 ER v 4 x s o gs j S d z 2 Connection for gas pipe __ 144 lt 5 21 32 gt ELARE 612 7 lt 1 2 gt 150 lt 5 29 32 gt Service port L 183 lt 7 7 32 gt 287 5 lt 11 11 32 gt J Installation bolt pitch 500 lt 19 11 16 gt J 69 2 23 32 lk L 800 lt 31 1 2 gt J Free space around the outdoor unit FOUNDATION BOLTS basic example Please secure the unit firmly with 4 foundation M10 lt W3 8 gt bolts Bolts washers and nut must be purchased locally KFoundation bolt height gt gt S Min 100mm lt 3 15 16 gt as long as no obstacle is placed on the rear and light and left sides of the unit Min 100mm lt 3 15 1
3. LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME B1 Terminal Block lt Power Supply Indoor Outdoor gt PFC Converter LED1 LED2 LED lt Operation Inspection Indicators gt MC Motor for Compressor IPM Power Module F1 F2 F3 F4 Fuse lt T6 3AL250V gt Fan Motor CB1 CB2 CB3 Main Smoothing Capacitor SWP Switch lt Pump Down 2184 Solenoid Valve Four Way Valve Noise Filter Circuit Board CN31 Connector lt Emergency Operation gt 63H High Pressure Switch LIILO Connection Terminal lt L1 Phase gt 55 Connector lt Connection for Option gt H3 Thermistor lt Liquid gt NINO Connection Terminal lt L2 Phase gt CNM Connector lt Connection for Option gt H6 Thermistor lt 2 Phase Pipe gt EI E2 E3 Connection Terminal lt Ground gt CNMNT Connector H7 Thermistor lt Ambient gt 52C 52C Relay Connected to Optional M NET Adapter Board H8 Thermistor lt Heat Sink C B Controller Circuit Board CNVMNT Connector H32 Thermistor Comp Surface SW1 Switch lt Manual Defrost Defect History lt Connected to Optional M NET Adapter Board gt H33 Thermistor lt Suction gt Record Reset Refrigerant Address gt CNDM Connector lt Connection for Option gt LEV A Linear Expansion Valve SW4 Switch lt Test Operation gt CN51 Connector lt Connection for Option gt ACL Reactor SW5 Switch lt Model Select Function Swit
4. 40 30 o E 5 D Z 20 10 20 10 0 10 20 30 40 50 C 4 14 32 50 68 86 104122 F Temperature 200 150 86 Es 1 100 o x 50 0 25 50 75 100 110 125 C 77 122 167 212 230 257 F Temperature 500 400 Q 8 5 1 8 200 100 25 50 75 100 120 C 77 122 167 212 248 F Temperature _____________ Linear expansion valve A12 18 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 outdoor controller board and the linear expansion valve Outdoor controller board LEV Blue EF 2 mra T 1 5 11 am White Set Connector LEV A lt Output pulse signal and the valve operation gt Opening a valve 8 gt 7 5655545352518 Closing a valve 1525 354555657581 The output pulse shifts in above order When linear expansion valve operation stops all output phases become OFF 2 Linear expansion valve operation Valve position capacity When the power is turned on 700 pulse closing valve signal will be sent till it goes to amp point in order to define the
5. ee PUZ A24 30 36NHA6 Ade TUR S PUZ A24 30 36NHA6 BS EN Ae PUY A24 30 36NHA6 UY A12 18 6 BS PUY A24 30 36NHA6 BS EE PUZ A42NHA6 4 IS PUZ A42NHA6 BS E PUY A42NHA6 S PUY A42NHA6 BS UU 99 CHARGELESS SYSTEM PRE CHARGED REFRIGERANT IS SUPPLIED FOR PIPING LENGTH AT SHIPMENT Maximum 100 ft 30 m A42 Maximum 70 ft 21 m A12 36 The refrigerant circuit with LEV Linear Expansion Valve and accumulator always control the optimal refrigerant level regardless of the length 42 100 ft 30 m maximum 12 36 70 ft 20 m maximum and 16 ft 5 m minimum of piping The additional refrigerant charging work during installation often causes problems It is completely eliminated by chargeless system This unique system improves the quality and reliability of the work done It also helps to speed up the installation time OCH577A 6 Service Ref SPECIFICATIONS PUZ A18NHA6 PUZ A18NHA6 BS PUZ A24NHA6 PUZ A24NHA6 BS PUZ A30NHA6 PUZ A30NHA6 BS PUZ A36NHA6 PUZ A36NHA6 BS PUZ A42NHA6 PUZ A42NHA6 BS Power supply Phase Single Cycle Voltage 60 Hz 208 230 V MCA 25 MOCP 40 Breaker size 30 External finish Munsell 3Y 7 8 1 1 Heat exchanger Plate
6. Linear expansion Disconnect the connector then measure the resistance with a tester LEV A Winding temperature 68 F 20 C For A24 42 T Normal Abnormal Qn 8 Gray Black Gray Red Gray Yellow Gray Orange Orange 46 30 Red Yellow Black Open or short i i Measure the resistance between the terminals with a tester Solenoid valve coil At the ambient temperature 68 F 20 C lt Bypass valve gt SV Normal Abnormal For A24 36 only 1450 150 Q Open or short OCH577A 54 _____ 10 6 1 Check method of outdoor controller circuit board PUZ A18 24 30 36 42NHA6 PUY A12 18 24 30 36 42NHA6 PUY A12 18 24 30 36 42NHA6 BS controller circuit board SCH Fuse check Check the fuse on outdoor controller circuit board Did the fuse F1 and F2 blow No lt Did the fuse F3 and F4 blow No lt Is LED or LED2 lit Yes lit PUZ A18 24 30 36 42NHA6 BS Yes blow lt Check the indoor controller board wiring Yes bl SSMO d Check the wiring for SV1 and 2154 2 No No lit LED1 LED2 LED1 lit LED2 lit C Normal D Check the voltage from the power circuit board to CNDC PNK connector N 280 to 350 V DC 2 Yes
7. Connector lt Transmission gt Connector lt Power Supply gt Connector lt M NET communication gt LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply Indoor Outdoor gt TABU V W Connection Terminal U V W Phase SW9 Switch lt Function Switch gt MC Motor for Compressor PFC Converter LED1 LED2 LED lt Operation Inspection Indicators MEI Fan Motor IPM Power Module F1 F2 F3 F4 Fuse lt T6 3AL250V gt 21S4 Solenoid Valve Four Way Valve CB1 CB2 CB3 Main Smoothing Capacitor SWP Switch lt Pump Down gt 63H High Pressure Switch Noise Filter Circuit Board CN31 Connector lt Emergency Operation gt SV Solenoid Valve Bypass Valve LILO Connection Terminal lt L1 Phase gt 55 Connector lt Connection for Option gt TH3 Thermistor lt Liquid gt NIINO Connection Terminal lt L2 Phase gt CNM Connector lt Connection for Option gt TH6 Thermistor lt 2 Phase Pipe gt ELE2E3 Connection Terminal lt Ground gt CNMNT Connector TH7 Thermistor lt Ambient gt 52C 52C Relay lt Connected to Optional M NET Adapter Board gt TH8 Thermistor lt Hea
8. FAN MOTOR MF2 Motor Inverter driver K 7 Ai PCSD_ 0 15 V DC pulse TESTS POINT Veg Gontro voltage 6 C5B_ 0 6 5 VDC 4 TESTS POINT 3 Vsp lt power supply gate drive 5 050 15VDC lt TESTS POINT Vcc Ground 4 3 TESTS POINT 2 Kl kees V DC lt power supply inverter drive T 4 1 IA A ___ F5 CONDO TESTS POINT gem Power circuit board CHECK POINT CHECKPOINT TESTS POINT TESTS POINT 3 Vsp rotation won L 7 A PO5C 0 15 V DC TESTS POINT control voltage 6 x C5A 0 65 V DC4 j TESTS POINT Vsp lt power supply gate drive 5 4 Ground 4 TESTS POINT 2 Voc lt power supply inverter drive 1 TESTS POINT i A CNF2 DC CHECK POINT The inverter control P C board is built in the fan motor of this outdoor unit When F5 that is on controller board is opened change the fan motor and outdoor controller board at the same time F5 is impossible to change For outdoor unit there 2 fan motors up and down MF1 MF2 it is possible to connect to either or CNF2 on the board It is abnormal when the abnormality is detected from either both fan motors or only one side OCH5
9. Use the F1 or F2 button to move the cursor to select the mode number and change the setting number with the F3 or F4 button Function setting Ref address 8 Unit 1 1 4 Mode 7 12 3 Mode 8 1 8 3 Mode 9 1 8 3 Mode 10 1 2 3 Request Fl F2 F3 F4 590 e 5 When the settings completed press button to send the setting data from the remote controller to the indoor units When the transmission is successfully completed the screen will return to the Function setting screen Note Make the above settings only on Mr Slim units as necessary The above function settings are not available for the City Multi units Table 1 summarizes the setting options for each mode number Refer to the indoor unit Installation Manual for the detailed information about ini tial settings mode numbers and setting numbers for the indoor units Be sure to write down the settings for all functions if any of the initial settings has been changed after the completion of installation work OCH577A 98 Function setting Ref address Grp Sending data Operating Procedure D 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 th
10. Actuator output state Actuator output state Display SV1 Four way valve Compressor Compressor i Display 52C SV2 SS warming up 0 0 1 ON 1 ON 2 ON 2 ON 3 ON ON 3 ON ON 4 ON 4 ON 5 ON ON 5 ON ON 6 ON ON 6 ON ON 7 ON ON ON 7 ON ON ON 8 ON 9 ON ON A ON ON b ON ON ON C ON ON d ON ON ON E ON ON ON F ON ON ON ON Error content U9 Request code 55 Data display 0 0 L Error content Error content D Error content Detected Error content Detected Display Overvoltage Undervoltage Li phase Power synchronizing Display Converter Fo PAM error error error open error signal error error 0 0 1 1 2 e 2 e 3 e e 3 e e 4 e 5 e e 6 e e 7 e 8 9 e e A b e e e e e d L e e E e e e F e e e e OCH577A 111 _______ gs s Contact demand capacity Request code 61 Setting content Data display oO 0 0 Settin L Setting content Display Setting value SW7A g SW72 0 096 1 5096 ON 2 7596 ON 3 100 ON ON External input state Request code 62 Input state Input present Stegen 0 0 0 e Contact demand Silent mode Spare 1 Spare 2 L Input state Display input input input input 0 1 2 3
11. Refrigerant flow in cooling Compressor 100 100 Refrigerant LIQUID pipe PS 6 1 4 Outdoor heat exchanger Stop valve Linear expansion valve PUY A24NHA6 PUY A24NHA6 BS PUY A30NHA6 PUY A30NHA6 BS PUY A36NHA6 PUY A36NHA6 BS Ball valve Bypass valve E ke 50 check Strainer Refrigerant GAS pipe A 15 88mn d5 8 Service port check Thermistor gt High pressure La gh pi protect switch Thermistor EE TH32 TH33 Accumulator is Thermistor TH6 Thermistor TH3 Distributor Refrigerant flow in cooling Compressor 100 100 Refrigerant LIQUID pipe e A Strainer Strainer 9 52mm 3 8 Stop valve Linear expansion valve with service port Ball valve Service Outdoor heat exchanger 50 Strainer port Strainer 100 check Thermistor Refrigerant GAS A TH6 15 88mm 5 8 Ls Serice Thermistor High pressure f Thermistor ort TH33 protect switch TH3 check d Geer e Accumulator een Distributor Compressor Refrigerant flow in cooling Refrigerant LIQUID pipe Ed 9 52mm 3 8 Strainer Strainer 100 100 Stop valve Li with service port Linear expansion valve O
12. Relay output state Example Request code 004 Dischargetemperature 156 F Refrigerant address 00 A Mode display B Refrigerant address C Data display area D Request code display area Display Power currently supplied to compressor Compressor Four way valve Solenoid valve CIA 0 L Relay output state 1 ON Operation mode 2 ON 3 ON ON O ti d peration mode 4 ON Display Operation mode 5 ON ON 0 STOP FAN 6 ON ON C COOL DRY 7 ON ON ON H HEAT 8 ON d DEFROST A ON ON Indoor unit Control state Request code 50 Data display Display State XE NEUES 0 Normal 1 Preparing for heat operation Unit No 4 state 2 ER Unit No 3 state 3 Unit No 2 state 4 Heater is ON 5 Anti freeze protection is ON Unit No 1 state 6 Overheat protection is ON 7 Requesting compressor to turn OFF F There are no corresponding units Outdoor unit Control state Request code 51 Data display State O 0 0 O Normal O O O 1 Preparing forheat operation O O 0 2 Defrost Compressor Frequency control state Request code 52 Data display Frequency control state 5 Discharge temperature Condensation temperature Anti freeze Heatsink temperature 0 0 Dis
13. Inspection Is 000 displayed stably in Display on the remote controller Stable Unstable Temperature Discharge temperature Outdoor F difference heat exchanger temperature Indoor intake air temperature oF Indoor heat exchanger temperature Inspection Is 000 displayed stably in Display on the remote controller Stable Unstable 9 Temperature Discharge temperature Indoor F I difference heat exchanger temperature amp Indoor heat exchanger temperature F Indoor intake air temperature Notes 1 Fixed Hz operation may not be possible under the following tempera ture ranges A In cool mode outdoor intake air temperature is 104 For higher or indoor intake air temperature is 73 F or lower B In heat mode outdoor intake air temperature is 68 F or higher or indoor intake air temperature is 77 F or lower 2 If the air conditioner is operated at a temperature range other than the ones above but operation is not stabilized after 30 minutes or more have elapsed carry out inspection 3 In heat mode the operation state may vary due to frost forming on the outdoor heat exchanger Heat mode Cool mode F oF 81 bp Ex InspectinC Inspection N 72 e a ZS Inspection B N o H m
14. Noise fi Iter circuit board EE m 198 253 V AC 7 52C LO Sech Li lt 11 Io NO NI a 12 eer 208 230 V 10 AC TB1 198 253 V AC Power circuit board U V 10 250 V AC 10 250 V AC V W 10 250 V AC 280 350 V DC aru Outdoor controller circuit board o lt Ke l 1 CNDC l circuit PNK Note See test point OCH577A 60 10 6 7 Check method of ACTM PUZ A30 36 42NHA6 PUY A30 36 42NHA6 C ACTM check Active Filter Module D Is the voltage of main incoming power 198 253 V AC Yes Is the voltage of CNDC PNK on outdoor controller circuit board 330 350 V DC PUZ A30 36 42NHA6 BS PUY A30 36 42NHA6 BS Test points are limited No Note To check the voltage of the parts on this board with a tester is difficult due to its location d Check the breaker and power during cooli
15. Buidid 4 lt 26 61 21 gt 9VWZ LV vv lt 8 2 7 gt 920 Igued Bum 14674 Ajddns 17 xoo g lt 8 gt lou lt 91 1 2 gt 2 CEIEC G gt KCele CS cele lt ZE LZ 8 gt Spl SHL SrL ozz TUE lt CE EL LE gt 0S6 uojepuno4 O 9 2 lt ZE E b gt 8S lt 06 6 gt 6 cello L t lt 8 9 2 gt 99 eBueuosiq A lt 66 gt lt ZE BL VL gt LLE x9L V 0 lt 8 S B gt 612 oL e e 19 lt 9L E L gt 0 N 8 ap B X 962299 AW J A F Taezo lou 182 lt 9 G gt z6 2 e JS lt 8 5 gt 6 GE EE SIE 909 Gnoyoouy A u m K2g 61 2 gt bL Eo 1 KS T Bee 9104 lt 9 6 gt 07 NS 267 Kat ae P moon Be F 35 Re Ri 16934 E Ws Sees B OI STIUPI manua v Qro wc 1nox20uy lt gt 2 2 vOv ege 91 6 1 07 9104 Burun 1uo14 1npuoO 27 lt 92 gt 969 lt 66 9 29 gt 092
16. Check the breaker main incoming power Check wiring on nonis ee Check noise filter circuit board Replace outdoor controller circuit board Check wiring Outdoor controller circuit board CNAC WHITE CNDC PNK Power circuit board 280 350 V DC 7 E Conv 3 Circuit CNDC PNK 198 253 V AC 1 i gt 3 CNAC1 Circuit GER Board Le 1 3 CNAC2 RED 198 253 V AC LI NI TB1 L1 N2 OCH577A 55 10 6 2 Check method of noise filter circuit board PUZ A18NHA6 PUY A12 18NHA6 C Noise filter circuit board check p Is the voltage of main incoming power 198 253 V AC Yes 4 Is the voltage of CNAC WHT outdoor controller board CNAC WHT 198 253 V AC Yes Is the voltage of CNDC PNK on outdoor controller circuit board 280 350 V DC PUZ A18NHA6 BS PUY A12 18NHA6 BS Note To check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited d Check the breaker and power supply No Check wiring Replace the noise filter circuit board No Turn off the incoming power supply gt and check the resistance of RS on the noise filter circuit board Check wiring Check power circuit
17. Initial setting Main Sub When connecting two remote controllers one of them needs to be designated as a sub controller Clock Use to set the current time Main display Use to switch between Full and Basic modes for the Main display The initial setting is Full Contrast Use to adjust screen contrast Display details Make the settings for the remote controller related items as necessary Clock The initial settings are Yes and 24h format Temperature Set either Celsius C or Fahrenheit F Room temp Set Show or Hide Auto mode Set the Auto mode display or Only Auto display Auto mode Whether or not to use the Auto mode can be selected by using the button This setting is valid only when indoor units with the Auto mode function are connected Administrator password The administrator password is required to make the settings for the following items Timer setting Energy save setting Weekly timer setting Restriction setting Outdoor unit silent mode setting Night set back Language selection Use to select the desired language Service Test run Select Test run from the Service menu to bring up the Test run menu Test run Drain pump test run Input maintenance Select Input maintenance Info from the Service menu to bring up the Maintenance information screen The following settings can be made from the Maintenance Information screen Model name input Serial No input Dealer informa
18. Return Reset Resetting the error history Press the button Reset on the screen that shows the error history Cw A confirmation screen will appear asking if you want to delete the error history Cw Press the button OK to delete the error history If deletion fails Request rejected will appear Unit not exist will appear if no indoor units that are correspond to the entered address are found Navigating through the screens To go back to the Main menu button To return to the previous screen 5 button 577 31 Self check Ref address H Delete error history Self check Ref address 8 Error history deleted Return 10 3 2 Remote controller check lt PAR 30MAA gt lt PAR 31MAA gt If operations cannot be completed with the remote controller diagnose the remote controller with this function Select Service from the Main menu and press the button Cw Select Remote controller check with the F1 or F2 button and press the 2 button Service menu 2 2 Maintenance password gt Remote controller check Main menu ERES C 2 Select Remote controller check from the Service menu and press the 2 but ton to start the remote controller check and see the check results Cw To cancel the remote controller check
19. Transmitting signal to the outdoor controller circuit board 0 5 V DC Zero cross signal 0 5 V DC 18 V DC 16 V DC 16 V DC Brief check of POWER MODULE 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 Check of diode bridge TABP1 TABS TABN1 TABS TABP1 TABT TABN1 TABT 2 Check of DIP IPM P U P V P W N U N V N W CNDC 280 380 V DC Connect to the outdoor DIP IPM controller circuit board CNAF Connect to ACTM RG00NG49 BLU r 7 C TABS TABT Connect to the outdoor noise fil 2 ter circuit board 5 Voltage among za phases 208 230 VAC Adf _ Bid Sidf jLMdf _ B e CN Thermistor TH8 lt Heat sink gt iy CN5 Detection of primary R current EN Connect to the E outdoor noise filter circuit board CNS CNA Connect to the outdoor controller circuit board CN4 TABP2 SC P2 Connect to ACTM INL E Zar IN 9S N 2 2029 4 n TABP1 Connect to 52C TABN1 Connect to ACTM TABN Connect to the smoothing capacitor TABP Connect to the smoothing capacitor CBO CB A42N only A42N only OCH577A
20. OCH577A 126 OPERATING PROCEDURE PHOTOS 10 Removing the high pressure switch 63H Photo 8 1 Remove the service panel See photo 1 2 Remove the top panel See photo 1 3 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and remove the right side panel 4 Pull out the lead wire of high pressure switch 5 Recover refrigerant 6 Remove the welded part of high pressure switch Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by remov ing the right side panel Note 3 When installing the high pressure switch cover it with a wet cloth to prevent it from heating 210 F or more then braze the pipes so that the inside of pipes are not oxidized High pressure switch 63H 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 lt Removing the reactor gt 4 Remove 4 reactor fixing screws 4 x 10 and remove the Reactor reactor DCL Electrical parts box lt Removing the capacitor gt 4 Remove 2 capacitor band fixing screws 4 x 10 and remove the capacitor Note The reactor and capacitor is attached to the rear of the Photo 9 electrical parts box Reactor fixing Reactor screws fixing screws Capacitor CE Capacitor band fixing screws OCH577A 127 OPERA
21. PUY A30 36NHA6 BS LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block lt Power Supply Indoor Outdoor gt P B Power Circuit Board SW4 Switch lt Test Operation gt MC Motor for Compressor TABU V W Connection Terminal lt U V W Phase gt SW5 Switch lt Model Select Function Switch gt MF1 Fan Motor TABS T Connection Terminal lt L1 L2 Phase gt SW6 Switch lt Model Select gt 21S4 Solenoid Valve Four Way Valve TABP1 P2 Connection Terminal lt DC Voltage SW7 Switch lt Function Switch gt SV Solenoid Valve Bypass Valve TABN1 N2 Connection Terminal lt DC Voltage SW8 Switch lt Function Switch gt 63H High Pressure Switch DS2 DS3 Diode Bridge SW9 Switch lt Function Switch gt TH3 Thermistor lt Liquid gt IPM Power Module SWP Switch lt Pump Down gt TH6 Thermistor lt 2 Phase Pipe gt N F Noise Filter Circuit Board CN31 Connector lt Emergency Operation gt TH7 Thermistor lt Ambient gt LI LO Connection Lead lt L1 Phase gt LED1 LED2 LED lt Operation Inspection Indicators TH8 Thermistor lt Heat Sink NI NO Connection Lead L2 Phase SS Connector Connection for Option TH32 Thermistor Comp Surface El E2 Connection Terminal Ground CNM Connector
22. R410A Use the existing fitting specifications Use high tension side pressure of 5 3MPa G or over Charge hose Only for R410A Use pressure performance of 5 09MPa G or over Electronic scale Gas leak detector Use the detector for R134a R407C or R410A Adaptor for reverse flow check Attach on vacuum pump Refrigerant charge base Refrigerant cylinder Only for R410A Top of cylinder Pink Oylinder with syphon Refrigerant recovery equipment 2 3 CAUTIONS FOR REFRIGERANT PIPING WORK New refrigerant RA10A 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 times higher than that of R22 their sizes of flared sections and flare nuts are different D Thickness of pipes Since the working pressure of R410A is higher compared to R22 be sure to use refrigerant piping with thickness shown below Never use pipes of 7 256 in 0 7 mm or below Diagram below Piping diameter and thickness Nominal Outside Thickness in mm dimensions in diameter mm R410A R22 1 4 6 35 1 32 0 8 1 32 0 8 3 8 9 52 1 32 0 8 1 32 0 8 1 32 0 8 1 32 0 8 5 128 1 0 5 128 1 0 5 128 1 0 OCH577A 4 Dimensions of flare cutting and flare nut The co
23. TABU V W Connect to the compressor MC Voltage among phases 10 180 V AC TABN2 Connect to ACTM 75 Active filter module PUZ A30 36 42NHA6 PUZ A30 36 42NHA6 BS PUY A30 36 42NHA6 PUY A30 36 42NHA6 BS p Connect to the outdoor power circuit board TABP2 L1 L2 SES g E Gy LM Connect to the DCL Reactor N1 Non connect Upper side Lower side Connect to the outdoor power circuit board 1 2 Non connect Connect to the outdoor power D circuit board CNAF _ GND lo Connect to the outdoor power a Green Connect to the outdoor power circuit board TABN1 Not used circuit board TABN2 Q Control signal Tester check points of Active filter module Error condition Normal value reference Symptom when the unit is in trouble and lo open less than 1Q The unit does not operate cannot be switched ON short 100 to 1 O The breaker operates open 1 The unit does not operate cannot be switched ON U9 Abnormal stop 2 short 100 to 1 The breaker operates open 1 The unit does not operate cannot be switched ON U9 Abnormal stop 2 short 100 to 1 O The breaker operates open 1 The unit does not operate cannot be switched ON U9 Abnormal stop 2 short 100 to 1 O The breaker operates open 1 The unit does not operate cannot be switched ON U9 Abnormal stop 2 an
24. U V U W and V W balanced Yes C Normal on the outdoor controller circuit board Replace the power circuit board Power circuit board 198 253 V AC Noise Filter Circuit Board U V 10 250 V AC U V W 10 250 V AC W U 10 250 V AC 7654321 CNDC 2 PNK E Conv 1 gt Circuit 290 350 V DC TB1 LN 198 253 AC 577 Circuit diagram 1 5 1 RED D 4 CNA oy eem D I CN3 1 o WHT 2 i CN2 WHT ES 10 6 6 Check method of power circuit board PUZ A30 36 42NHA6 PUZ A30 36 42NHA6 BS PUY A30 36 42NHA6 PUY A30 36 42NHA6 BS C Power circuit board check Note To check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited mem Is the voltage of main incoming power Check the breaker and power supply 198 253 V AC Yes Is the voltage of CNDC PNK on outdoor Check wining iL dfe Check power circuit board controller circuit board 280 350 V DC oo npe Check noise filter circuit board Yes Check wiring Is the voltage to the compressor No Check model setting switch SW6 U V U W and V W balanced on the outdoor controller circuit board Replace the power circuit board Yes C Normal
25. Disconnection of compressor wiring Defective outdoor power circuit board Compressor has a ground fault Check the field facility for the power supply Correct the wiring U V W phase to compressor Refer to 10 9 TEST POINT DIAGRAM Outdoor power circuit board Replace outdoor power circuit board Check compressor for electrical insulation Replace compressor Undervoltage error Instantaneous decrease in DC bus voltage to 200 V Decrease in power source voltage instantaneous stop Disconnection or loose connection of CN52C on the outdoor power circuit board controller circuit board Defective converter drive circuit in outdoor power circuit board Defective 52C drive circuit in outdoor power circuit board Disconnection or loose connection of CN2 on the outdoor power circuit board controller circuit board Power circuit failure on DC supply for 18 V DC output on outdoor controller circuit board Check the field facility for the power supply Check CN52C wiring Replace outdoor power circuit board Replace outdoor power circuit board Check CN2 wiring amp Replace outdoor controller circuit board Input current sensor error L1 phase open error Decrease in input current through outdoor unit to 0 1 A only if operation frequency is more than or equal to 40 Hz or compressor current is more than or equal to 6 A Defective input current detecti
26. Fan motor 0 35 0 35 0 75 0 75 0 75 0 40 0 40 Airflow 34 34 55 55 55 100 1200 1200 1940 1940 1940 Sound level Cooling 46 48 48 48 48 Heating Protection devices Dimension HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo 800 800 950 950 950 950 300 23 300 23 330 30 330 30 330 30 330 30 600 600 943 943 943 1350 31 1 2 31 1 2 37 12 32 37 12 32 37 12 32 37 12 32 11 13 16 7 8 11 13 16 7 8 13 1 3 16 13 1 3 16 13 1 3 16 13 1 3 16 w D H W D H 23 5 8 23 5 8 37 1 8 37 1 8 37 1 8 53 5 32 Weight 37 40 74 74 74 112 82 89 163 163 163 247 Refrigerant Charged 1 3 1 7 3 0 3 0 3 0 2 14 16 3 12 16 6 10 16 6 10 16 6 10 16 Control Linear expansion valve Oil Charged Ethe r FV50S L 0 87 0 87 02 20 20 28 28 Refrigerant piping Pipe size OD Liquid mm 6 35 6 35 9 52 9 52 in 1 4 1 4 3 8 3 8 Pipe size OD Gas mm 12 7 12 7 15 88 15 88 in 1 2 1 2 5 8 5 8 Connection method
27. 4 e 5 e e 6 e e 7 8 9 e e A e e b e e e e d e e e e e F e e e e Outdoor unit Capacity setting display Request code 70 Data display Capacity 9 12 10 18 11 24 14 30 20 36 25 42 Outdoor unit Setting information Request code 71 i Setting information SE 0 0 Display Defrost mode Setting information 0 Standard Setting information 1 For high humidity Displa Single Heat pump e 3 phase cooling only Single phase Heat pump Cooling only 3 phase neal pump Cooling only OCH577A 112 Indoor unit Model setting information Request code 162 Data display Display Model setting state Display Model setting state 0101 00 PEAD A AA 20 01 PEAD A AA 21 See the table on the right 02 22 03 23 04 24 05 25 PLA A BA 06 26 07 27 08 28 09 29 OA 2A Ob 2b DC 2C Od 2d 2 2 10 30 11 31 12 32 PKA A HA L KA L 13 33 14 34 45 35 16 36 17 37 18 38 19 39 1A 3A 1b 3b 1C 3C 1d 3d 1E 3E 1F 3F Indoor unit Capacity setting information Request code 163 Data display Display Capacity setting state Display Capacity setting state aes 00 10 42 01 11 See t
28. APPROXIMATE F i THRESHOLD OF F cr HEARING FOR E CONTINUOUS NOISE INC 20 i i 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz 5 4 STANDARD OPERATION DATA 5 4 1 Heat pump Representative matching PKA A18HA6 PKA A24KA6 PKA A30KA6 PKA A36KA6 PLA A42BA6 Mode COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING COOLING HEATING Total Capacity 18 000 19 000 24 000 26 000 30 000 32 000 34 200 37 000 42 000 45 000 Input 2 240 1 970 2 270 2 330 4 130 3 150 5 030 3 610 4 600 4 450 Indoor unit model PKA A18HA6 PKA A24KA6 PKA A30KAG PKA A36KA6 PLA A42BA6 Phase Single Single Single Single Single Cycle 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz Voltage 230 V 230 V 230 V 230 V 230 V Current 0 33A 0 36A 0 36A 0 57 1 00A 0 94A Outdoor unit model PUZ A18NHA6 PUZ A24NHA6 PUZ A30NHA6 PUZ A36NHA6 PUZ A42NHA6 Electrical circuit Phase Single Single Single Single Single Cycle 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz Voltage 230 V 230 V 230 V 230 V 230 V Current 9 8A 10 4A 18 1A 14 0A 21 7A 15 6A 20 4A 21 5A Discharge pressure 3 01 2 89 3 08 3 04 3 23 2 95 2 83 2 93 Suction pressure 0 77 0 68 0 77 0 64 0 74 0 63 0 82 0 69 Discharge temperature 80 1 77 9 81 2 81 4 88 1 80 7 73 4 80 3 Condensing temperature 49 9 48 5 50 8 50 8 52 8 49 3 47 5 47 5 Suction temperature 3 8 0 4 3 3 1 5 2 3 2
29. Check the status _ Lighting of the LED2 Blinking Check the status of the LED2 after disconnecting the remote controller wire from the terminal block TB5 of the indoor unit Check the status Lighting of the LED2 Blinking OCH577A 49 Defective remote controller Breaking or poor contact of the remote controller wire The remote controller wire short circuits Defective indoor controller board Replace the remote controller Check if there is breaking or poor contact of the remote controller wire Check the voltage of the terminal block TB5 connecting the remote controller wire If itis not between 10 and 16 V DC the indoor controller board must be defective Check if the remote controller wire is short circuited Replace the indoor controller board Before repair Frequent calling from customers Phone Calls From Customers How to Respond Unit does not operate at all The operating display of remote controller does not come on D Check if power is supplied to air conditioner Nothing appears on the display unless power is supplied Unit cannot be restarted for a while after it s stopped Wait around 3 minutes to restart unit The air conditioner is in a state of being protected by the microprocessor s directive Once the compressor is stopped the unit cannot be restarted for 3 minutes This control is
30. During group operation with indoor unit of multi refrigerant System if remote controller transmit to indoor unit while outdoor unit power supply of one refrigerant system is turned off or within 2 min utes of restart abnormality is detected Contact failure of transmission wire of remote controller or indoor unit Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiving circuit of indoor unit or remote controller 42 Always try the followings when the error A7 occurs Turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If mal function was accidental the unit returns to normal Check address switch of abnormality gener ated address Check disconnection or looseness of abnor mality generated or abnormality detected transmission wire terminal block and con nector Check if tolerance range of transmission wire is not exceeded Check if type of transmission wire is correct or not If the cause of trouble is in above repair the defective then turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again If the cause of trouble is not in above in single refrigerant system one outdoor unit controller of displayed address or attribute
31. Thermistor lt Suction gt 58 50 C or below 194 F 90 C or above Temperature of heat sink Abnormal if heat sink thermistor TH8 detects temperature indicated below A12 18 42N 183 F 84 C A24 30 36N 177 F 81 C The outdoor fan motor is locked Failure of outdoor fan motor Air flow path is clogged Rise of ambient temperature Defective thermistor Defective input circuit of outdoor power circuit board Failure of outdoor fan drive circuit Check outdoor fan Check airflow path for cooling Check if there is something which causes temperature rise around outdoor unit Upper limit of ambient temperature is 114 F 46C Turn off power and on again to check if U5 is displayed within 30 minutes If U4 is displayed instead of U5 follow the action to be taken for U4 Check resistance value of thermistor TH8 or temperature by microprocessor Thermistor TH8 Refer to 10 6 HOW TO CHECK THE PARTS SW2 on A Control Service Tool Refer to 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS amp Replace outdoor power circuit board Replace outdoor controller circuit board Power module Check abnormality by driving power module in case overcurrent is detected UF or UP error condition OCH577A Outdoor stop valve is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring conn
32. 106 3 0 kg UZ A30NHA6 94 oz UZ A30NHA6 BS 2 7 kg 106 oz 3 0 kg UZ A36NHA6 94 oz UZ A36NHA6 BS 2 7 kg UU U 106 oz 3 0 kg UZ A42NHA6 132 02 UZ A42NHA6 BS 3 7 kg U 142 oz 4 0 kg For pipes longer than 70 or 100 ft additional charge is required 5 2 COMPRESSOR TECHNICAL DATA Service Ref PUZ A18NHA6 PUZ A18NHA6 BS PUY A12 18NHA6 PUY A12 18NHA6 BS PUZ A24 30 36NHA6 PUZ A24 30 36NHA6 BS PUY A24 30 36NHA6 PUY A24 30 36NHA6 BS at 68 F 20 C PUZ A42NHA6 PUZ A42NHA6 BS PUY A42NHA6 PUY A42NHA6 BS Compressor model SNB130FQCM1 TNB220FLHM 0 640 0 880 0 302 Winding Resistance 0 0 640 0 880 0 302 577 0 640 0 880 0 302 5 3 NOISE CRITERION CURVES PUY A12NHA6 PUY A12NHA6 BS MODE SPL dB LINE COOLING 46 90 E S 80 8 m 70 3 o 5 60 D m 50 5 m 3 D m 40 a 5 w e 3 ILL 920 2 r H 20 APPROXIM
33. 577 73 E Outdoor power circuit board PUZ A18NHA6 PUZ A18NHA6 BS PUY A12 18NHA6 PUY A12 18NHA6 BS Brief check of DIP IPM and DIP PFC 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 Check of DIP IPM P U P V P W N U N V N W 2 Check of DIP PFC P R P S R N S N 5 Connect to the ACL 208 230 V AC U V W Connect to the compressor MC Voltage among phases 5 to 180 V AC LD1 LD2 280 380 V DC Connect to the outdoor controller circuit board CNDC RE OO OS OO 5 9999 nA LD9 Connect to the earth Only A24 CN2 Connect to the outdoor controller circuit board 0 6 Outdoor power circuit board Transmitting signal to the outdoor controller circuit board 0 5 V DCH Zero cross signal 0 5 V DC 9 0 Not used 16 V DC u 16 V DC CH 577 CN3 Thermistor lt Heat sink gt TH8 74 CN4 Connect from the outdoor controller circuit board CN4 CN5 Primary current detection Connect to the outdoor noise filter circuit board 5 Outdoor power circuit board PUZ A30 36 42NHA6 PUZ A30 36 42NHA6 BS PUY A30 36 42NHA6 PUY A30 36 42NHA6 BS CN2 Connect to the outdoor controller circuit board CN2
34. Disconnection or contact failure of 63H 63H is working due to defective parts Defective outdoor controller circuit board Check connection of 63H connector on outdoor controller circuit board Refer to 10 9 TEST POINT DIAGRAM Check the 63H side of connecting wire Check continuity by tester Replace the parts if the parts are defective Replace outdoor controller circuit board EA 6844 Miswiring of indoor outdoor unit connecting wire 1 Outdoor controller circuit board can automatically check the number of connected indoor units Abnormal if the number cannot be checked automatically due to miswiring of indoor outdoor unit connecting wire etc after power is turned on for 4 minutes Abnormal if outdoor controller circuit board recognizes excessive number of indoor units Contact failure or miswiring of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity Excessive number of indoor units are connected to 1 indoor unit 4 units or more Defective transmitting receiving circuit of outdoor controller circuit board Defective transmitting receiving circuit of indoor controller board Defective indoor power board 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire Miswiring of indoo
35. GCheck if noise entered into indoor outdoor connecting wire or power supply Startup time over Re check error by turning off power and on again 2 blinking Indoor outdoor unit communication error signal receiving error is detected by in door unit Check if indoor outdoor connecting wire is connected correctly Check if noise entered into indoor outdoor connecting wire or Indoor outdoor unit communication error transmitting error is detected by indoor unit power supply Check if noise entered into indoor outdoor controller board Indoor outdoor unit communication error signal receiving error is detected by outdoor unit Re check error by turning off power and on again Indoor outdoor unit communication error transmitting error is detected by outdoor unit 3 blinking Remote controller signal receiving error is detected by remote controller Check if connecting wire of indoor unit or remote controller is connected correctly Remote controller transmitting error is detected by remote controller GCheck if noise entered into transmission wire of remote controller Remote controller signal receiving error is detected by indoor unit GRe check error by turning off power and on again Remote controller transmitting error is detected by indoor unit 4 blinking Check code is not defined Check if remote controller is MA remote controller PAR 21MAA C
36. i MODEL Sw6 SW5 5 6 X2 SE PUZ A2ANHAG or Ron DON i 12345678 123456 GH PUY A24NHA6 PF Ap on HEHHE m LI NI El 12345678 123456 d 2 SW5 1 to 4 Function switch 8 z 5 __ _ 4 7 577 L1 L2 GR S1 S2 S3 rg INDOOR KE e UNIT POWER SUPPLY 208 230V 60Hz gt Use copper supply wires Utilisez des fils d alimentation en cuivre 17 PUZ A30 36NHA6 PUZ A30 36NHA6 BS PUY A30 36NHA6
37. is displayed 0 to 100 When the capacity is 100 hundreds digit tens digit and ones digit are displayed by turns Example When 100 0 55 0 55 25 1 gt 00 gt Error postponement code history 2 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Error postponement code history 3 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display Check code history 3 Oldest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns Code display Error thermistor display amp o p there is no error thermistor is displayed 3 Outdoor pipe temperature Liquid TH3 6 Outdoor pipe temperature 2 phase TH6 7 Outdoor ambient temperature TH7 8 Outdoor heat sink TH8 Code display Operation frequency on error occurring 0 to 255 0 to 255 When it is 100 Hz or more hundreds digit tens digit and ones digit are displayed by turns Example When 125 Hz 0 5s 0 55 25 1 gt 25 OCH577A Fan step on error occurring 0 to
38. 45 Indoor unit Cond Eva pipe temperature Unit No 4 38 190 SE t 46 47 48 Thermo ON operating time 0 999 Minutes 49 Test run elapsed time 0 120 Minutes lt Not possible to activate maintenance mode during the test run Request code Request content Description Display range Unit Remarks Indoor unit Control state Refer to 13 2 1 Detail Contents in Request Code Outdoor unit Control state Refer to 13 2 1 Detail Contents in Request Code Compressor Frequency control state Refer to 13 2 1 Detail Contents in Request Code Outdoor unit Fan control state Refer to 13 2 1 Detail Contents in Request Code Actuator output state Refer to 13 2 1 Detail Contents in Request Code Error content U9 Refer to 13 2 1 Detail Contents in Request Code Signal transmission demand capacity 0 255 Contact demand capacity Refer to 13 2 1 Detail Contents in Request Code External input state silent mode etc Refer to 13 2 1 Detail Contents in Request Code Outdoor unit Capacity setting display Refer to 13 2 1 Detail Contents in Request Code Outdoor unit Setting information Refer to 13 2 1 Detail Contents in Request Code 84 M NET adapter connection presence absence 0000 Not connected 0001 Connected 85 86 87 88 89 Di
39. AUTOSTOP check whether warm air blows out from the unit E T eo Press the button and check whether strong air blows out e o gt from the unit CHECK LOUVER Press the CES button and check whether the auto vane operates properly esl AUN EL Press the ON OFF button to stop the test run D SET RESET CLOCK Note Point the remote controller towards the indoor unit receiver while following steps to It is not possible to run in FAN DRY or AUTO mode OCH577A 30 _ O 10 3 HOW TO PROCEED SELF DIAGNOSIS 10 3 1 Self diagnosis lt PAR 30MAA gt lt PAR 31MAA gt D Select Service from the Main menu and press the button Cw Select Self check with the or button and press the button Service menu V2 Test run Input maintenance info Function setting Check Self check Main menu 5 6 With the 1 or F2 button enter the refrigerant address and press the button Self check Ref address E Select Y Address 8 Check code unit number attribute will appear will appear if no error history is available Self check Ref address 8 Error P4 Unt 1 Grp IC Return Reset When there is error history Self check Ref address 0 Error Unt Grp
40. Abnormal point and detection method Case Judgment and action Open short circuit of outdoor unit temperature thermistor TH32 Abnormal if open 37 F 3 or less or short 422 F 217 C 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 TH32 Thermistor lt Comp surface gt of connectors TH32 on the outdoor controller circuit board Defective thermistor Defective outdoor controller circuit board Disconnection or contact failure Check connection of connector TH32 on the outdoor controller circuit board Check break ing of the lead wire for TH32 Refer to 10 9 TEST POINT DIAGRAM Check resistance value of TH32 or temperature by microprocessor Thermistor TH32 Refer to 10 6 HOW TO CHECK THE PARTS SW2 on A Control Service Tool Refer to 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Replace outdoor controller board U4 TH3 5105 TH6 5107 TH7 5106 TH8 5110 TH33 5133 Open short of outdoor unit thermistors TH3 TH6 TH7 TH8 and TH33 Abnormal if open or short is detected during compressor operation Open detection of thermistors TH3 and TH6 is inoperative for 10 seconds to 10 minutes after compressor starting and 10 minutes after and during defrosting Note Check which unit has abnormality in its thermistor by switching the mode
41. Accumulator Refrigerant flow in cooling S Refrigerant flow in heating Compressor 100 100 4 Refrigerant LIQUID pipe Strainer Strainer 9 52mn 23 8 Stop valve Linear expansion valve with service port PUZ A42NHA6 PUZ A42NHA6 BS Service port check High pressure protect switch Ball valve 4 way valve Outdoor heat exchanger i Bus PN Thermistor Refrigerant GAS pipe Le Ze TH6 15 88mm d5 8 um 7 Sasi Service ait Thermistor Thermistor S e Muffler TH3 check Le paw Thermistor ictri Distributor Strainer i TH32 100 Accumulator Refrigerant flow in cooling Compressor dj See Refrigerant flow in heating Refrigerant LIQUID pipe s A i 9 52mn 93 8 gt Strainer Strainer 100 100 Stop valve Linear expansion valve with service port 577 23 SS PUY A12NHA6 PUY A12NHA6 BS PUY A18NHA6 PUY A18NHA6 BS mm in nit mm in Service port Stop valve High pressure Check with service port protect switch ri Outdoor heat exchanger Bech Thermistor Refrigerant GAS pipe re TH6 12 7mm d1 2 re Thermistor d TH3 Thermistor 1 Thermistor PES FE p em Distributor Accumulator
42. Filter sign Air flow Fan speed No of air outlets Clean the filter indicator is not displayed Standard High ceiling 4 directions 3 directions 2 directions 07 Optional high efficiency filter Vane setting Not supported Supported No vanes Vane No 3 setting PLA only Vane No 1 setting Vane No 2 setting Optional humidifier PLA only Vane differential setting in heating mode cold wind prevention Swing Not supported Supported No 1 setting TH5 75 82 F 24 28 No 2 setting Standard TH5 82 90 F 28 32 No 3 setting TH5 90 100 F 32 38 Not available i Swing JPLA BA Available Wave air flow N ow e Set temperature in heating mode 4 deg up 1 Fan speed when the heating thermostat is OFF Available Not available Extra low Stop Keeping fan speed set by remote controller N gt Fan speed when the cooling thermostat is OFF Detection of abnormality of the pipe temperature P8 Keeping fan speed set by remote controller Stop Detect Neglect 1 PKA HA L KA L 3 6 F 2 C up Mode No 11 Settings N PLA BA Vane No 3 setting No Vanes Less smudging Downward position than the standard No vane function Vane No 1 setting Standa
43. d R 2917622595 Ee SE mm ous te eee z fu SE ZS JS ayua we m seeker I amp N BEY 8 EE Ty Ki 4 E gt e E amp Bis 7 S We z e mojpoouy 1noxoouy 3 SE vis S lou Buun 10024 lou woyog 5 gout 0 lt lt 5 6 gt 7 Ve USuLDEmE 9 6 1 gt 0 lt 60 1 gt S amp 262 meet jnoyoouy lt 9 1 gt 226 2 ali apu Inogoouy jou ey Bun ud ou w n ee Joued uoee jo apis Jeuut TEE OU jueu9ege 9u 19s 30y 4 A00 1u014 lt 9 gt Inpuoo y uayM S i amp je 1n0x90UM Buidid CO E E CR zl Bs 0 lt s l o A l e0 i eh S Six Va HEI TE 8 uu 7 amp BENIN f v A M x l eipueH a AAA v i UUU EM SE le H joued 9lu9S DOUT Sr z z z L EE z z z soopno opur A Ra uoneoo FATWA dOLS Jo UONEDIPUL A ddns J wod J91 puua uue3 lt 9 21 gt ZZE SipueH lt 8 gt ZS 6 P ANV14 uonoeuuoo edid GINO uesa uoy ROI TEU 26161 15 096 lt 8 9 gt 88 S1 3tuV14 uono uuoo edid svo lueJ Buj u O SOION JO 8 CM 0LIN
44. uonepunoJ at i lt gt 9oeds lou 9EXZL Z Be S8 E SS x 3 ess E efieuosig Ee SCH S ez zy lt 819 2 gt 99 93 AN 9 L U e E TE alt lt 8 gt ae BE 8 oq gt Zeg omm un A es S I a3 Sie S V ayeyu sty epis V p u T i 8IL 9 51V lt 8 gt uonejpuno3 jou padeys nz lt 8 S Z gt 009 lt 8 L 9 gt SLL Jan mojaq Je9J uu 3uoJj p eq ued suonoeuuoo pue Dudu Aj eoo peseupund aq jsnui pue syoq lt 8 EM gt OLW uonepunoj y jun u se q ay umous ale 859006 92AJ0S 10 p p u eoeds Jo suoisueuii 29 sjenueui u slle p 1ejnomjed Jo uoneue dx3 lduuex 21529 991 NOLL 240 SNIJIMCONIdld 7 51108 NOILVGNNOS 3999 39IAH3S C yun y 39745 338 14 OCH577A PUZ A42NHA6 BS PUY A42NHA6 BS PUZ A42NHA6 mm lt in gt Uni PUY A42NHA6 lt 9L S 9 G lou inoxoouy ejou woyog lt OL EL C gt bL Buldid 1eay
45. 52C relay signal Connect to the outdoor controller circuit board CN52C Outdoor noise filter circuit board PUZ A24NHA6 PUZ A24NHA6 BS PUY A24NHA6 PUY A24NHA6 BS El E2 Connect to the earth lt Connect to the earth CNAC1 CNAC2 208 230 V AC Connect to the outdoor control ler circuit board CNAC CN5 Primary current Connect to the outdoor power circuit board CN5 CN52C WE 52C relay signal Connect to the outdoor controller circuit board CN52C LO NO Voltage of 208 230 V AC is output Connect ACL 577 72 ______ Outdoor noise filter circuit board PUZ A30 36 42NHA6 PUZ A30 36 42NHA6 BS PUY A30 36 42NHA6 PUY A30 36 42NHA6 BS CN52C 52C driving signal Connect to the outdoor controller circuit board CN52C RL O PTC1 PTC2 sdpagte LO Voltage of 208 230 V AC is output Connect to the outdoor power circuit board TABS TABT euP48e O Ospas2O O JPso O De JP39 e CNAC1 2 208 230 Connect to the outdoor control ler circuit board CNAC E2 Connect the earth CN5 Primary current El Connect to the outdoor power Connect to circuit board CN5 the earth oo ddr AOSZ ve s an Age egal OSI Voltage of 208 230 V AC is input Connect to the terminal block TB1
46. Ambient gt TH6 7 High pressure switch 63H 6 Remove the terminal cover and disconnect the compressor lead wire Electrical parts box 7 Remove the electrical parts box fixing screws 1 from the fixing screws front the right and the rear side and detach the electrical Terminal block TB1 parts box by pulling it upward 4 Removing the thermistor lt 2 phase pipe gt TH6 thermis Photo 6 tor lt Liquid gt TH3 and thermistor lt Suction gt TH33 1 Remove the service panel See Photo 1 Thermistor 2 Remove the top panel See Photo 1 Electrical lt 2 phase pipe gt 3 Remove the front panel See Photo 1 parts box TH6 4 Remove the conduit cover and cord cover 5 Remove the back panel fixing screws 4 from the right and 3 from the rear side and detach the back panel See Photo 1 6 Disconnect the connector TH3 white or TH6 7 red or TH33 yellow on the controller circuit board in the electri cal parts box 7 Loosen the clamp for the lead wire in the rear of the electrical parts box 8 Pull out the thermistor lt Liquid gt TH3 and thermistor lt 2 phase pipe gt TH6 and thermistor lt suction gt TH33 from the sensor holder Note Replace the thermistor lt 2 phase pipe gt TH6 and the thermistor lt Ambient gt TH7 together since they are A Thermistor combined pictis Refer to No 5 to remove the thermistor Ambient TH7 Thermistor
47. C or higher or when the indoor intake temperature is 23 C or less When the indoor fan speed is not set to strong 577 94 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 setting the indoor unit number lt Table 1 gt Function selections Mode No Function Settings Wired remote controller Setting No RF thermistor Initial setting when sent from the factory Remarks Power failure Not available 01 automatic recovery Available 101 e The setting is e applied to all the units in the same refrigerant system 1 2 Indoor temperature Average data from each indoor unit 1 detecting Data from the indoor unit with remote controllers 2 Data from main remote controller 3 LOSSNAY Not supported 1 connectivity Supported indoor unit dose not intake outdoor air through LOSSNAY 2 Supported indoor unit intakes outdoor air through LOSSNAY 3 1 2 1 2 1 2 1 2 Power supply 230V voltage 208V Frost prevention 2 36 F Normal temperature 37 F Humidifier control When the compressor operates the humidifier also oper
48. Indoor Fla Connection method Outdoor Fla Height difference IU OU m Maximum 30 Maximum 30 Maximum 30 Maximum 30 Maximum 30 Maximum 30 Maximum 100 Maximum 100 Maximum 100 Maximum 100 Maximum 100 Maximum 100 Piping length Maximum 50 Maximum 50 Maximum 69 Maximum 69 Maximum 69 Maximum 69 OCH577A ft m ft Maximum 165 Maximum 165 Maximum 225 Maximum 225 Maximum 225 Maximum 225 5 DATA 5 1 REFILLING REFRIGERANT CHARGE R410A oz kg Service Ref Piping length one way 7TOft 80ft 90 100ft 120 ft 130 ft 140 ft 150 ft 160 ft 165 ft 170 ft 180 ft 190 ft 200 ft 210 ft 220 ft 225 ft 21m 24m 27 30m 37m 40m 43m 46m 49m 50m 52m 55m 58m 61m 64m 67m 69m Factory charged PUY A12NHA6 42 02 PUY A12NHAG BS 1 2 kg 46 oz 1 3 kg PUY A18NHAG 56 oz PUY AIBNHAG BS 1 6 kg 60 oz 1 7 kg PUY A24NHAG 94 oz PUY A24NHAG BS 2 7 kg 106 oz 3 0 kg PUY A30NHAG 94 oz PUY A30NHAG BS 2 7 kg 106 oz 3 0 kg PUY A36NHAG 94 oz PUY A36NHA6 BS 2 7 kg 106 oz 3 0 kg PUY A42NHA6 132 oz PUY A42NHAG BS 3 7 kg 142 oz 4 0 kg PUZ A18NHA6 56 oz PUZ AI8NHAG BS 1 6 kg 60 oz 17 kg PUZ A24NHA6 94 oz UZ A24NHA6 BS 2 7 kg
49. MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again Check transmission waveform or noise on transmission wire BUS BUSY 1 Overtime error by collision damage Abnormal if transmitting signal is not possible for 8 10 minutes continuously because of collision of transmission 2 Data could not reach transmission wire for 8 10 minutes continuously because of noise etc Note The address and attribute displayed at remote controller indicate the con troller that detected abnormality OCH577A D Transmission processor could not transmit signal because short cycle voltage of noise and the like have entered into transmis sion wire continuously Transmission quantity has increased and transmission is not possible because there was wiring mistake of terminal block for transmission wire TB3 and terminal block for central control TB7 in outdoor unit Transmission are mixed with others and occupation rate on transmission wire rose because of defective repeater a function to connector or disconnect trans mission of control and central control system of outdoor unit then abnormality is detected 41 Check if transmission wire of indoor unit FRESH MASTER LOSSNAY or remote con troller is not connected to terminal block for central control TB7 of outdoor unit Check if transmission wire of indoor unit FRESH MASTER or LOSSNAY is not con nected to terminal bl
50. Remove the conduit cover and cord cover 5 Remove the back panel See Photo 1 6 Remove the electrical parts box See Photo 5 Removing the 4 way valve coil 2154 7 Remove 1 4 way valve coil fixing screw M4 x 6 8 Remove the 4 way valve coil by sliding the coil to the right Removing the linear expansion valve coil LEV A 9 Remove the linear expansion valve coil by sliding the coil upward OCH577A Photo 9 4 way valve coil fixing screw 4 way valve Linear expansion valve 4 way valve coil 2154 expansion valve coil LEV A 116 OPERATING PROCEDURE PHOTOS 8 Removing the 4 way 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 4 way valve coil See Photo 8 8 Recover refrigerant 9 Remove the welded part of four way valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the four way valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized 9 Removing linear expansion valve 1 Remove the service pan
51. at remote controller is indicate the controller that did not reply ACK Common factor that has no rela tion with abnormality source The unit of former address does not exist as address Switch has changed while the unit was energized Extinction of transmission wire voltage and signal is caused by over range transmission wire Maximum distance 200 m Remote controller line 39ft 12 m Extinction of transmission wire voltage and signal is caused by type unmatched transmission wire With shield wire CVVS CPEVS With normal wire no shield VCTF VCTFK CVV CVS WR VVF VCT Diameter 1 28 mm AWG 16 or more Extinction of transmission wire voltage and signal is caused by over numbered units Accidental malfunction of abnormality detected controller noise lightning surge Defective of abnormality gen erated controller 2 If displayed address or attribute is out door unit Indoor unit detects abnormality when indoor unit transmitted to outdoor unit and there was no reply ACK Contact failure of transmission wire of outdoor unit or indoor unit Disconnection of transmission connector CN2M of outdoor unit Defective transmitting receiving circuit of outdoor unit or indoor unit If displayed address or attribute is indoor unit remote controller detects abnormal ity when remote controller transmitted to indoor unit and there was no reply ACK OCH577A
52. 0 4 9 0 3 Ref Pipe length 7 6 7 6 7 6 7 6 7 6 7 6 7 6 7 6 Discharge pressure 437 419 447 441 468 428 410 425 Suction pressure 112 99 117 93 107 91 120 100 o o 2 c Discharge temperature 176 178 191 164 177 Condensing temperature 122 123 127 118 118 Suction temperature 39 38 36 40 33 Ref Pipe length 25 25 25 25 25 Intake air temperature DB 21 1 Intake air temperature WB Discharge air temperature DB Intake air temperature DB Intake air temperature WB Intake air temperature DB Intake air temperature WB Discharge air temperature DB Intake air temperature DB Intake air temperature WB 577 11 5 4 2 Cooling only Representative matching PKA A12HA6 PKA A18HA6 PKA A24KA6 PKA A30KA6 PKA A36KA6 PLA A42BA6 Mode Electrical circuit E o E S Ei E ba Capacity COOLING COOLING COOLING COOLING COOLING COOLING Input Indoor unit model PKA A12HA6 PKA A18HA6 PKA A24KA6 PKA A30KA6 PKA A36KA6 PLA A42BA6 Phase Single Single Single Single Single Single Cycle 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz Voltage 230 V 230 V 230 V 230 V 230 V 230 V Current 0 33 A 0 33 A 0 36 A 0 36 A
53. 1 button Refrigerant leak check 2 Stable mode will start Press the button stable will start SEET Approx 20minutes Stable mode will take approx 20 minutes Begin 4 The operation data will appear Refrigerant leak check 1 2 Add Cond Add Cond The following value is the reference for the refrigerant volume check If the refrig 8 OK 4 OK erant is leaking NG will appear RINS 3 NG dree The refrigerant volume check reference value can be changed with the func Check menu tion selection Default value RP71 80 RP50 70 lt Resetting the initial learning data gt elf the unit has been relocated or if refrigerant has been additionally charged the initial learning data must be reset and learn ing performed again How to reset the data 1 Turn the main power OFF 2 Attach the short circuit pin for the emergency operation connector CN31 on the outdoor controller board to the ON side 3 Turn ON the test run switch SW4 1 on the outdoor controller board 4 The data will be reset when the main power is turned ON 5 Turn the main power OFF 6 Turn OFF the test run switch SW4 1 7 Return the short circuit pin for the emergency operation connector CN31 to the OFF side eUnder the following conditions it may not be possible to carry out stable operation or accurately detect refrigerant leaks When the outdoor intake temperature is 40
54. 10 87 E The black square m indicates a switch position Explanation for display SW2 setting Display detail LEV A opening pulse on error occurring 0 to 480 0 to 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 130 pulse 0 55 0 55 25 1 gt 30 Indoor room temperature TH1 on error occurring 46 to 102 46 to 102 B to 39 C Indoor pipe temperature Liquid TH2 on error occurring 38 to 190 38 to 190 39 to 88 C When the temperature is O F or less and temperature are displayed by turns Example When 15 F 0 5s 0 5s 2s 15 Indoor pipe temperature Cond Eva TH5 on error occurring 38 to 190 38 to 190 39 to 88 C When the temperature is O F or less and temperature are displayed by turns Example When 15 F 0 5s 0 5s 2s 15 Outdoor pipe temperature 2 phase TH6 on error occurring 38 to 190 38 to 190 39 to 88 C When the temperature is O F or less and temperature are displayed by turns Example When 15 F 0 5s 0 5s 2s E gt 15 D Outdoor outside temperature TH7 on error occurring 38 to 190 3
55. 11 32 23 64 9 1 1 2 83 64 13 2 21764 21732 16 6 49 64 25 32 19 7 1 2 Tools and materials Can R22 tools be used Gauge manifold Charge hose Gas leak detector Refrigerant recovery equipment Refrigerant cylinder Applied oil Air purge refrigerant charge and operation check Gas leak check Collection of refrigerant Refrigerant charge Apply to flared section Safety charger Prevent compressor malfunction when charging refrigerant by spraying liquid refrigerant Charge valve Prevent gas from blowing out when detaching charge hose Tool exclusive for R410A x Vacuum pump Vacuum drying and air purge Tools for other refrigerants can be used if equipped with adop ter for reverse flow check A Usable if equipped with adopter for rever se flow Flare tool Flaring work of piping Tools for other refrigerants can be used by adjusting flaring dimension A Usable by adjusting flaring dimension Bender Bend the pipes Tools can be used for other refrigerants Pipe cutter Cut the pipes Tools can be used for other refrigerants Welder and nitrogen gas cylinder Weld the pipes Tools can be used for other refrigerants Refrigerant charging scale Refrigerant charge Tools can be used for other refrigerants Vacuum gauge or thermis Check the degree of vacuum Vacuum Tools can be used
56. 225 gt 100 times Compressor integrating operation times 0 to 9999 0 to 9999 When it is 100 hours or more hundreds digit tens digit and ones digit are displayed by turns Example When 2450 hours 245 x 10 hours 0 55 0 55 25 12 gt 45 gt 10 hours Compressor operating current 0 to 50 0 to 50 Note Omit the figures after the decimal fractions Compressor operating frequency 0 to 255 0 to 255 When it is 100Hz or more hundreds digit tens digit and ones digit are displayed by turns Example When 125Hz 0 55 0 5 25 gt 25 LEV A opening pulse 0 to 480 0 to 480 When it is 100 pulse or more hundreds digit tens digit and ones digit are displayed by turns Example When 150 pulse 0 55 0 55 25 z gt 50 Error postponement code history 1 of outdoor unit Postponement code display Blinking During postponement Lighting Cancellation of postponement 00 is displayed in case of no postponement Code display 577 Operation mode on error occurring 83 Operation mode of when operation stops due to error is displayed by setting SW2 as below SW2 ON Code display SW2 setting Display detail _ The black square m indicates a switch position Ex
57. 3 a Indoor intake air temperature amp 8 Indoor heat exchanger temperature Indoor heat exchanger temperature C Indoor intake air temperature 0 18 36 54 72 90 108 126 144 F 18 36 54 72 90 108 126 144 F amp Discharge temperature Indoor heat exchanger temperature amp Discharge temperature Outdoor heat exchanger temperature Ooo O 11 3 INITIAL SETTINGS FOR REFRIGERANT LEAKAGE DETECTION FUNCTION 11 3 1 PAR 30MAA PAR 31MAA Refrigerant leakage is detected after a long time To enable this function the refrigerant volume must be saved initial learning after installation Always operate this function in the following manners after installation Always perform test run before using this function and confirm that the air conditioner operates normally To accurately detect refrigerant leaks set the wind speed to strong and execute this operation Refrigerant leak check is valid only with models which support the refrigerant leak check function Select Service from the Main menu and press the button Check menu 1 1 Error history Cw Refrigerant volume check Refrigerant leak check Smooth maintenance Select Check with the 1 F2 button and press the 7 button Request code Service menu Cw Select Refrigerant leak check with the F1 or F2 button and press the 2 C
58. Connection for Option TH33 Thermistor Suction 52C 52C Relay CNMNT Connector lt Connected to Optional M NET Adapter Board gt LEV A Linear Expansion Valve CB Controller Circuit Board CNVMNT Connector lt Connected to Optional M NET Adapter Board gt DCL Reactor F1 F2 F3 F4 Fuse lt T6 3AL250V gt CNDM Connector lt Connection for Option gt CY1 CY2 Capacitor SW1 Switch lt Manual Defrost Defect History Record CN51 Connector lt Connection for Option gt ACTM Active Filter Module Reset Refrigerant Address gt X51 X52 X55 Relay When M NET adapter is connected 63H LEV A ES ve TH33 TH32 er 5 a ye t t D n H ouwen oy 93 Bu nu d d SL EL 7 WHT 13 12 1 4 12 1 6 3 1 5 SER el Em TH33 TH32 TH7 6 TH3 LEV A CNVMNT CNMNT 5 58 680 2 1 YLW BLK RED WHT WHT WHT WHT ele E Em EZE gE 1 4 JOSE sssssssssssss 5 0 13 1 CNM 14 63H WHT cN31 quw CN52C A 3 RED 8 WHT WHT 12 SC 2 ITRANS 1 7 12 es zile ITIITI Ka E 2 4 se 7 65 F2 CNAC F3 c 8 8 5 ONET qu Md x as o F1 F4 3 Das 3 jeu 3 55 _ 1 3 4 GRN BLU lwHT iE SV PUZ only zie NO 1 M NET ADAPTER E SYMBOL NAME 8 TB7 Terminal Block lt M net connection gt 4 on 6 CN5 Connector lt Transmission gt psa TABT BLU CND Connector lt Power Supply VIE QU ONDE Lc Arcs CN2M Connec
59. F1 F2 buttons gt Cw Press the 5 button to return to Test run operation 1 Press the button When the test run is completed the Test run menu screen will appear The test run will automatically stop after 2 hours OCH577A 27 Fl Fe F3 F4 990 lt Error information gt When an error occurs the following screen will appear Check the error status stop the operation and consult your dealer Check code error unit refrigerant address unit model name and serial TEE number will appear Sones ee The model name and serial number will appear only if the information has unit Ve Noo address n been registered M e Serial No Press the F1 or F2 button to go to the next page Reset error Reset button Y Page mam U F4 blinks Contact information dealer s phone number will appear if the information has Error information 2 2 been registered Contact information Dealer Tel Reset error Reset button Page A Press the F4 button or the e button to reset the error that is occurring Error information 1 2 Error code E4 Error unit IU Ref address 88 Unt 80 e Model Errors cannot be reset while the ON OFF operation is prohibited Serial No Reset error Reset button Y Page 1 1 E EA _gblinks be Select OK with the
60. Liquid TH3 OCH577A 115 OPERATING PROCEDURE PHOTOS 5 Removing the thermistor lt Ambient gt 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 See Photo 4 5 Pull out the thermistor lt Ambient gt TH7 from the sensor holder Note In case of replacing thermistor Ambient TH7 replace it together with thermistor lt 2 phase pipe gt TH6 since they are combined together Refer to No 4 to remove thermistor lt 2 phase pipe gt Photo 7 Sensor holder 6 Removing the thermistor lt Comp surface gt TH32 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 back panel See Photo 1 5 Remove the electrical parts box See Photo 5 6 Remove the sound proof cover upper for compressor 6 Pull out the thermistor lt Comp surface gt TH32 from the holder of the compressor shell Photo 8 Sound proof cover Compressor MC 7 Removing the 4 way valve coil 21S4 and linear expansion valve coil LEV A 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
61. Note In case of replacing thermistor Ambient TH7 replace it together with thermistor lt 2 phase pipe gt TH6 since they are combined together Refer to No 4 above to remove thermistor lt 2 phase pipe gt Lead wire of thermistor lt Ambient gt TH7 Sensor holder 6 Removing the thermistor lt Liquid gt TH3 1 Remove the service panel See Figure 1 2 Disconnect the connector TH3 white on the controller circuit board in the electrical parts box 3 Loosen the clamp for the lead wire in the rear of the electrical parts box See Photo 4 4 Pull out the thermistor lt Liquid gt TH3 from the sensor holder Thermistor lt Liquid gt TH3 Photo 6 Thermistor lt Suction gt TH33 7 Removing the thermistor lt Comp surface gt TH32 and thermistor lt Suction gt TH33 1 Remove the service panel See Figure 1 2 Disconnect the connector TH32 black or TH33 yellow on the controller circuit board in the electrical parts box 3 Loosen the clamp for the lead wire under the electrical parts box See Photo 4 4 Pull out the thermistor lt Comp surface gt TH32 and ther mistor lt Suction gt TH33 from the holder of the compressor shell See Photo 6 OCH577A Photo 7 Thermistor lt Comp surface gt TH32 120 OPERATING PROCEDURE PHOTOS 8 Removing the 4 way valve coil 21S4 linear expansion Photo 8 valve coil LEV A
62. See Figure 1 Controller arts Box TH6 3 Disconnect the connectors TH6 and TH7 red on the circuit board controller circuit board in the electrical parts box C B 4 Loosen the clamp for the lead wire in the rear of the electrical parts box 5 Pull out the thermistor lt 2 phase pipe gt TH6 from the sensor holder Note In case of replacing thermistor 2 phase pipe TH6 replace it together with thermistor Ambient TH7 since they are combined together Refer to No 5 below to remove thermistor Ambient 5 Removing the thermistor Ambient TH7 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 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 See Photo 4 5 Pull out the thermistor Ambient TH7 from the sensor holder Photo 5 Note In case of replacing thermistor Ambient TH7 replace it together with thermistor 2 phase pipe TH6 since they are combined together Refer to No 4 above to remove thermistor 2 phase pipe Lead wire of thermistor Ambient TH7 Sensor holder 6 Removing the thermistor Liquid TH3 thermistor Photo 6 Comp surface TH32 and thermistor lt Suction gt TH33 Thermistor 1 Remove the service panel See Figure 1 Liquid 2 Disconnect the connectors TH3
63. Select Smooth maintenance with the 1 22 button and press the 2 EHE button Set each item Smooth maintenance Ref address E Select the item to be changed with the F1 F2 button Stable mode EN Heat Normal Select the required setting with the F3 or F4 button Begin 4 Cursor C A Address m lt Ref address gt setting 0 to 15 m lt Stable mode gt setting Cool Heat Normal Smooth maintenance Press the button Fixed operation will start SE E Note Stable mode will take approx 20 minutes Stable mode Du Stabilization Collecting Exit b The operation data will appear 3 Ref address Cool The Compressor Accumulated operating COMP run time is 10 hour unit COMP current 12A and the Compressor Number of operation times COMP ON OFF is a 100 Ehe Eh time unit fractions discarded COMP frequency 80 Hz Return Smooth maintenance 2 3 Rei address 0 Cool Sub cool 30 OU TH4 temp 68 C OU TH6 temp 38 OU TH7 temp 38 C Return Smooth maintenance 3 3 Navigating through the screens Refaddress Cool IU air temp 28 C To go back to the Main menu button IU HEX ter ia C To return to the previous screen 5 button Iu flier time Return 577 91 e Data measurement When the operation is stab
64. Spuet Jeued uoee epis 1euut ay jueuueme 18S eu QQ lpueH lpueH OPIS lt CE EL 9L gt LLV lt 9L 6 VL gt OLE lt 06 6 gt 96 lt CE SC L gt SP lt EL gt 08E 8 1 9 84 lt 8 M gt 0 LIN og uonepunoJ peuojou pedeus N Z lt v E gt 61 a j lt 8 9 22 gt 009 lt 8 9 gt 5 OPIS mojeq pue Jee r suonoeuuoo pue KENE IER 20052 50 Buun 14614 noyoouy 9 L 1 L 229 2 noxooux gl L L 2 z 9lou joy 5 joH jnoyoouy Dud SEIT lpueH uoneooj FATWA dOLS Jo lt 8 6 gt 6 6 UI uono uuoo edid qinOi11ueJeBuj u lt 9 6 gt 88 GL NH edid syo Jue uy y lul sS oN JO 9e mu VS lt oq uonepunoja gt 1 Ajjeo0 peseuound eq snw SJeusew pue sog syoq lt 8 EM gt 0 LN uonepunoj uj Auu y eunoes se q W lt 26 62 9 gt
65. Terminal lt DC Voltage Sw Switch lt Function Switch gt 63H High Pressure Switch TABN1 N2 N Connection Terminal lt DC Voltage SW8 Switch lt Function Switch gt TH3 Thermistor lt Liquid gt DS2 DS3 Diode Bridge SW9 Switch lt Function Switch gt TH6 Thermistor lt 2 Phase Pipe gt IPM Power Module SWP Switch lt Pump Down gt TH7 ThermistorsAmbient NF Noise Filter Circuit Board CN31 Connector lt Emergency Operation gt TH8 Thermistor lt Heat Sink gt LILO Connection Lead lt L1 Phase gt LED1 LED2 LED lt Operation Inspection Indicators gt TH32 Thermistor lt Comp Surface gt Connection Lead lt L2 Phase gt 55 Connector lt Connection for Option gt TH33 Thermistor lt Suction gt EI E2 Connection Terminal lt Ground gt CNM Connector lt Connection for Option gt LEV A Linear Expansion Valve 52C 52C Relay CNMNT Connector lt Connected to Optional M NET Adapter Board gt DCL Reactor C B Controller Circuit Board CNVMNT Connector Connected to Optional M NET Adapter Board CY1 CY2 Capacitor F1 F2 F3 F4 Fuse T6 3AL250V CNDM Connector Connection for Option ACTM Active Filter Module 5 1 Switch lt Manual Defrost Defect History Record CN51 Connector lt Connection for Option gt Main Smoothing Capacitor Reset Refrigerant Address gt X51 X52 Relay When M NET adapter is connected
66. a Connection of power supply terminal block TB1 b Connection of terminal on outdoor power circuit board A12 A24N Disconnection of connector R or S Refer to 10 9 TEST POINT DIAGRAM A30 A42N Disconnection of connector TABT or TABS Refer to 10 9 TEST POINT DIAGRAM Check connection of the connector CNDC on the outdoor controller circuit board Check connection of the connector LD1 and LD2 for A12 A24N and CNDC for A30 A36N on the outdoor power circuit board Refer to 10 9 TEST POINT DIAGRAM Check connection of reactor DCL or ACL A12 A24N Check connection of LO and NO on the outdoor noise filter circuit board Check connection of R and S on the outdoor power circuit board A30 A42N Check connection of L1 and L2 on the active filter module ACTM Refer to 10 9 TEST POINT DIAGRAM a Check connection of outdoor noise filter circuit board b Replace outdoor noise filter circuit board Refer to 10 9 TEST POINT DIAGRAM amp Replace outdoor power circuit board Replace controller board When items above are checked but the units cannot be repaired 33 Check code Abnormal point and detection method Case Judgment and action 63H connector open Abnormal if 63H connector circuit is open for 3 minutes continuously after power supply 63H High pressure switch Disconnection or contact failure of 63H connector on outdoor controller circuit board
67. board Yes No normal RS open Yes open C Normal Replace the noise filter circuit board and check 52C relay wiring power board and ACTM Noise filter circuit board 198 253 V AC gt 1 gt 3 4 WHT 2 Outdoor Controller Board RS resistor Power circuit board PO s Conv Circuit O R CNDC PNK gt To outdoor controller circuit board CNDC WHT 12 V DC from outdoor OCH577A r controller circuit board CN52C 280 350 V DC 10 6 3 Check method of noise filter circuit board PUZ A24NHA6 PUZ A24NHA6 BS PUY A24NHA6 PUY A24NHA6 BS Noise filter circuit board check Note To check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited Is the voltage of main incoming power No 198 253 V AC Check the breaker and power supply Yes Is the voltage of CNAC WHT on N S outdoor controller circuit board CNAC WHT 2 Garg ches isejfilter circuit board 198 253 V AC eplace the noise filter circuit board Yes controller circuit board 280 350 V DC b and check me peststance er RS on Is the voltage of CNDC PNK on outdoor No EE supply the noise filter circuit board Yes
68. board Abnormal if data cannot be normally read from the nonvolatile memory of the remote controller control board Check code E1 Abnormal if the clock function of remote controller cannot be normally operated Check code E2 Defective remote controller Replace remote controller Remote controller transmission error E3 signal receiving error E5 Abnormal if remote controller could not find blank of transmission path for 6 seconds and could not transmit Check code E3 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 Check code E3 Abnormal if indoor controller board could not find blank of transmission path Check code E5 Indoor controller board receives transmitted data at the same time compares the data and when detecting it judges different data to be abnormal 30 continuous times Check code E5 2 remote controller are set as main In case of 2 remote controllers Remote controller is connected with 2 indoor units or more Repetition of refrigerant address Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board 8 Noise has entered into transmission wire of remote controller Set a remote controller to main and the other to sub Remote controller is connec
69. button Error reset Reset current error h Error reset Error reset Navigating through the screens uS ain menu To go back to the Main menu button OCH577A 28 lt Checking the error information gt While no errors are occurring page 2 2 of the error information can be viewed by selecting Error information from the Main menu Errors cannot be reset from this screen Main Main menu 2 3 Restriction Energy saving Night setback Filter information y Error information Main display O Y Cursor lt Page p Rae jJ Fl Fe 24 jblnks eoe Error history Select Service from the Main menu and press the 2 button amp Select Check with the F1 or 22 button and press the 2 button Service menu 1 2 Test Input maintenance info Function setting gt Check Self check Main menu jt Fl F8 2 Select Error history with the F1 F2 button and press the button Check menu 1 1 gt Error history Refrigerant volume check Refrigerant leak check Smooth maintenance Request code Service menu Error history 3 Select Error history from the Check menu and press the 2 button to view up to 16 error history records 4 records are shown per page and the top record on the first pa
70. check Main menu w Service menu 2 2 gt Maintenance password Remote controller check Main menu Service menu Not available Please stop the unit Service menu GH lt Function setting gt CD Select Service from the Main menu and press the 2 button Cw Select Function setting with the or button and press the button Service menu 1 2 Test run Input maintenance info gt Function setting Check Self check Main menu RSR J j Set the indoor unit refrigerant addresses and unit numbers with the F1 through 4 buttons and then press the button to confirm the current setting lt Checking the indoor unit No gt When the button is pressed target indoor unit will start fan operation If the unit is common or when running all units all indoor units for the selected refrigerant address will start fan operation Function setting gt Ref address J Unit No Gre 1 2 Monitor 4 Address When data collection from the indoor units is completed the current settings appears highlighted Non highlighted items indicate that no function settings are made Screen appearance varies depending on the Unit No setting Function setting Ref address 8 Grp 1 4 Mode 1 2 3 Mode 2 1 8 3 Mode 3 1 8 3 Mode 4 1 2 3 Request
71. communication error 1 Abnormal if serial communication between outdoor controller circuit board and outdoor power circuit board is defective 2 Abnormal if communication between outdoor controller circuit board and M NET board is not available OCH577A Breaking of wire or contact failure of connector CN2 between the outdoor controller circuit board and the outdoor power circuit board Breaking of wire or contact failure of connector CN4 between the outdoor controller circuit board and the outdoor power circuit board Defective communication circuit of outdoor power circuit board Defective communication circuit of outdoor controller circuit board for outdoor power circuit board Breaking of wire or contact failure of connector between outdoor controller circuit board and M NET board Contact failure of M NET board power supply line Noise has entered into M NET transmission wire 40 Check connection of each connector CN2 and CN4 between the outdoor controller circuit board and the outdoor power circuit board Replace outdoor power circuit board Replace outdoor controller circuit board Check disconnection looseness or breaking of connection wire between outdoor control ler circuit board CNMNT and M NET board CN5 Check disconnection looseness or breaking of connection wire between outdoor control ler circuit board CNMNT and M NET board CND Check M NET
72. control The ones digit In this digit the total number of activated control is displayed Compressor operating frequency control Preventive control for excessive temperature rise of discharge temperature Preventive control for excessive temperature rise of condensing temperature Frosting preventing control Preventive control for excessive temperature rise of heatsink Example The following controls are activated Primary current control Preventive control for excessive temper ature rise of condensing temperature Preventive control for excessive temper ature rise of heatsink Code display OCH577A 90 11 EASY MAINTENANCE FUNCTION 11 1 SMOOTH MAINTENANCE 11 1 1 PAR 30MAA PAR 31MAA Maintenance data such as the indoor outdoor unit s heat exchanger temperature and compressor operation current can be displayed with Smooth maintenance This cannot be executed during test operation Depending on the combination with the outdoor unit this may not be supported by some models Select Service from the Main menu and press the button D Check menu Vi Error history Cw Refrigerant volume check Refrigerant leak check Smooth maintenance Select Check with the 1 F2 button and press the button Request code Service menu Cw
73. directly to the units no intermediate connections Intermediate connections can lead to communication errors if water enters the cables and causes insufficient insulation to ground or a poor electrical contact at the intermediate connection point OCH577A 22 9 REFRIGERANT SYSTEM DIAGRAM PUZ A18NHA6 PUZ A18NHA6 BS Unit mm in lt 4 way valve solenoid coil gt Stop valve High pressure Service Heating ON with service port protect switch port check Cooling OFF valve heat exchanger Refrigerant GAS pipe 12 7mm 1 2 lt ja ps eg Mt Muffler m Thermistor gt Thermistor TH33 TH32 tee 8 i Distributor C 100 100 Refrigerant flow in cooling Refrigerant LIQUID pipe Beer Ser Refrigerant flow in heating 6 35mm 1 4 Le HX Linear expansion valve PUZ A24NHA6 PUZ A24NHA6 BS PUZ A30NHA6 PUZ A30NHA6 BS PUZ A36NHA6 PUZ A36NHA6 BS Service High pressure Pypess wane port protect switch Ball valve valve check Outdoor heat exchanger Refrigerant GAS pipe d Thermistor 15 88mn d5 8 H SY TH6 Kat Thermistor Service port d TH3 check __ thermistor Thermistor TH32 TH33 Distributor
74. fin coil Defrost metho d Reverse cycle Crankcase heater Compressor Hermetic Model SNB130FQCM1 TNB220FLHM TNB220FLHM TNB220FLHM ANB33FCTMT Motor output 0 9 1 3 1 3 1 3 2 5 RI A 12 12 12 12 20 L R A 14 14 17 5 17 5 27 5 Starter type Inverter Fan drive x No Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 2 Fan motor output 0 040 0 075 0 075 0 075 0 086 0 086 Fan motor 0 35 0 75 0 75 0 75 0 40 0 40 Airflow 55 55 55 100 1940 1940 1940 Sound level Cooling 48 48 48 Heating 50 50 50 Protection devices HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo HP switch Comp shell thermo Dimension 800 950 950 950 950 300 23 330 30 330 30 330 30 330 30 600 943 943 943 1350 31 1 2 37 12 32 37 12 32 37 12 32 37 12 32 11 13 16 7 8 13 1 3 16 13 1 3 16 13 1 3 16 13 1 3 16 23 5 8 37 1 8 37 1 8 37 1 8 53 5 32 Weight 41 75 75 75 114 91 165 165 165 251 Refrigerant R410A Charged 1 7 3 0 3 0 3 0 3 12 16 6 10 16 6 10 16
75. for other valve prevents back flow of oil and refri vacuum valve gerant to thermistor vacuum gauge Charging cylinder Refrigerant charge Tool exclusive for R410A x Prepare a new tool Use the new tool as the tool exclusive for R410A A Tools for other refrigerants can be used under certain conditions Tools for other refrigerants can be used 2 4 LOW AMBIENT COOLING Precautions for low ambient cooling tor vacuum gauge and refrigerants If the outdoor temperature is 23 F or lower during cooling operation install an optional air guide to prevent wind from blowing into the outdoor unit Install the outdoor unit in a location where wind will not blow onto the back of the unit To prevent damage to the parts be sure to install the unit turn on the main power and perform service in an environment where the ambient temperature is 0 F or higher In order to protect the compressor and electrical components do not turn off the circuit breaker if the unit is installed in an environment where the ambient temperature is 0 F or lower It needs at least Abr standby to operation in order to warm the electrical parts Note During cooling operation under low ambient temperature the bottom fan motor of A42N stops occasionally This is an intended feature not a malfunction 577 3 FEATURES Gm du WD ap j 0 w L tp Glo CD ED Sdt Vu
76. in the air Photo 13 Compressor MC Separator fixing screw Compressor fixing nuts Accumulator Valve bed 13 Removing the accumulator 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 Recover refrigerant 8 Remove 2 welded pipes of accumulator inlet and outlet 9 Remove 2 accumulator leg fixing screws 4 x 10 10 Remove the accumulator together with the receiver leg Note Recover refrigerant without spreading it in the air Photo 14 Outlet Accumulator leg fixing screw Accumulator leg OCH577A 118 s PUZ A24 30 36NHAG BS PUY A24 30 36NHA6 BS OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel Fiqure 1 Top panel fixing screws 1 Remove 3 service panel fixing screws 5 x 12 and slide 9 PET N _ EE the book on the right downward to remove the service i panel 2 Remove screws 3 for front 3 for rear 5 x 12 of the top panel and remove it Service panel UNITA Service panel Fan grille fixing screws Cover panel Grille fixing screws 2 Removing the fan motor MF1 Photo 1 Front panel Photo 2 1 Remove the service pan
77. lt liquid or condenser evaporator gt thermistor Defective refrigerant circuit Converse connection of extension pipe on plural units connection Converse wiring of indoor outdoor unit connecting wire on plural units connection Defective detection of indoor room temperature and pipe lt condenser evaporator gt temperature thermistor Stop valve is not opened completely Note Indoor unit i Case Check pipe lt liquid or condenser evaporator gt temperature with room temperature display on remote controller and outdoor controller circuit board Pipe lt liquid or condenser evaporator gt Temperature display of indoor liquid pipe Indoor 1 temperature display is indicated by setting SW2 of outdoor controller circuit board as follows Conduct temperature check with outdoor controller circuit board after connecting A Control Service Tool PAC SK52ST Temperature display of indoor condenser evaporator pipe Indoor 1 1 2 3 ON OFF Temperature display of indoor condenser evaporator pipe Indoor 2 4 2 3 Temperature display of indoor liquid pipe Indoor 2 ON OFF A Control Service Tool SW2 setting Check converse connection of extension pipe or converse wiring of indoor outdoor unit connecting wire n the text indicates M NET board in outdoor unit Judgment and action Address duplicate definition This error is displayed
78. number will start end of registration to blink and registration starts FUNCTION nn nn H nn nn SELECTION H T n p 093 n 003 If is displayed for both the mode number and setting number and Z5 blinks in the room temperature display area a transmission error may have occurred Check to see if there are any sources of noise or interference near the transmission path If you wish to continue to select other functions repeat steps to Complete function selection iS Hold down the mode is 15 to 28 and buttons Do not operate the remote controller for at least 30 seconds after completing SES function selection No operations will be accepted even if they made simultaneously for atleast 2 seconds After a while the function selection screen will disappear and the air condi tioner OFF screen will reappear Note If a function of an indoor unit is changed by function selection after installation is complete make sure that a O mark etc is given in the Check column of Table 1 to indicate the change OCH577A 99 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 IR wireless remote controller is available only for refrigerant system with wireless function Refrigerant addre
79. of the remote controller during DRY operation No air comes out sometimes during DRY operation The fan speed does not match Q This is not a malfunction During the DRY operation the blower s ON OFF is controlled by the microprocessor to prevent overcooling and to ensure efficient dehumidification The fan speed cannot be set by the remote controller during DRY operation the setting of the remote controller in HEAT operation OCH577A Q The fan speed does not match This is not a malfunction 1 When the HEAT operation starts to prevent the unit from blowing cold air the fan speed is gradually increased from 0 to the set speed in proportion to the temperature rise of the discharged air 2 When the room temperature reaches the set temperature and the outdoor unit stops the unit starts the LOW AIR operation 3 During the HEAT operation the DEFROST operation is performed to defrost the outdoor unit During the DEFROST operation the fan is stopped to prevent cold air coming out of the indoor unit 51 The up down vane will be automatically set to horizontal blow in these cases listed up on the left 1 3 After a while the up down vane will be automatically moved according to the setting of the remote controller Phone Calls From Customers How to Respond Note Air blows out for a while after HEAT operation is stopped Something is wrong with the blower This
80. or indoor unit Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiving circuit of indoor unit or remote controller 5 If displayed address or attribute is FRESH MASTER Indoor unit detects abnormality when indoor unit transmitted to FRESH MASTER and there was no reply ACK During sequential operation of indoor unit and FRESH MASTER of other refrigerant System if indoor unit transmits to FRESH MASTER while outdoor unit power supply of same refrigerant system with FRESH MASTER is turned off or within 2 minutes of restart abnormality is detected Contact failure of transmission wire of indoor unit or FRESH MASTER Disconnection of transmission connector CN2M of indoor unit or FRESH MASTER Defective transmitting receiving circuit of indoor unit or FRESH MASTER 6 If displayed address or attribute is LOSSNAY Indoor unit detects abnormality when indoor unit transmitted to LOSSNAY and there was no reply ACK If the power supply of LOSSNAY is turned off indoor unit detects abnormality when it transmits to LOSSNAY During sequential operation of indoor unit and LOSSNAY of other refrigerant system if indoor unit transmits to LOSSNAY while outdoor unit power supply of same refrig erant system with LOSSNAY is turned off or within 2 min utes of restart abnormality is detected Contact failure of transmis sion wire of indoor unit of LOSSNAY
81. panel fixing screws 5 x 12 in the rear of the unit and then remove the right side panel 5 Remove the 4 way valve coil See Photo 7 6 Recover refrigerant 7 Remove the welded part of 4 way valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized 4 way valve coil 4 way way 4 way valve Linear fixing screw valve coil expansion valve 9 Removing linear expansion valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 4 Remove 4 right side panel fixing screws 5 x 12 in the rear of the unit and then remove the right side panel 5 Remove the linear expansion valve See Photo 7 6 Recover refrigerant 7 Remove the welded part of linear expansion valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized
82. points Thermistor TH3 lt Liquid gt Thermistor TH6 lt 2 phase pipe Normal Abnormal TH32 160 to 410 kQ Thermistor TH8 TH3 lt Heat sink gt TH6 Thermistor TH32 4 3 to 9 6 kQ lt Surface gt TH7 pen or short Thermistor TH33 lt Suction gt TH33 Disconnect the connector then measure the resistance with a tester At the ambient temperature 50 to 86 F 10 to 30 C TH8 39 to 105 kQ Fan motor MF1 MF2 Refer to 10 6 8 Check method of DC fan motor fan motor outdoor controller circuit board Solenoid valve coil Measure the resistance between the terminals with a tester lt 4 way valve gt At the ambient temperature 68 F 20 C 2154 18 36 42 1500 1500 2350 170 Q Open short Motor for compressor Measure the resistance between the terminals with a tester MC U Winding temperature 68 F 20 C Normal Abnormal 12 18 A24 30 36 A42 0 320 Q 0 880 Q 0 266 Q Open or short Linear expansion valve Disconnect the connector then measure the resistance with a tester LEV A Winding temperature 68 F 20 C For A12 18 u Normal Abnormal 6 Red White Red Orange Brown Yellow Brown Blue 1 2 Blue 3 Orange 4 46 40 Yellow 5 6 White Brown Open or short
83. rear of the unit and then remove the right side panel 8 Remove 3 separator fixing screws 4 x 10 and remove the separator 9 Remove the thermistor lt Comp surface gt TH32 Refer to procedure 7 10 Recover refrigerant 11 Remove the 3 points of the motor for compressor fixing Compressor Compressor Accumulator nut using spanner or adjustable wrench fixing nuts 12 Remove the welded pipe of motor for compressor inlet and outlet and then remove the compressor Note Recover refrigerant without spreading it in the air 16 Removing the accumulator Photo 15 Inlet 1 Remove the service panel See Figure 1 D 2 Remove the top panel See Figure 1 3 Remove 2 front cover panel fixing screws 5 x 12 and AUAM Outlet remove the front cover panel See Photo 3 2 4 Remove 2 back cover panel fixing screws 5 x 12 and a remove the back cover panel 5 Remove the electrical parts box See Figure 1 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and then remove the right side panel 8 Recover refrigerant 9 Remove 2 welded pipes of accumulator inlet and outlet 10 Remove 2 receiver leg fixing screws 4 x 10 Accumulator le Note Recover refrigerant without spreading it in the air Accumulator leg l fixi
84. return Use to get the units to operate at the preset temperature after performing energy save operation for a specified time period Time can be set to a value from 30 and 120 in 10 minute increments This function will not be valid when the preset temperature ranges are restricted Schedule Set the start stop times to operate the units in the energy save mode for each day of the week and set the energy saving rate Up to 4 energy save operation patterns can be set for each day Time can be set in 5 minute increments Energy saving rate can be set to a value from 0 or 50 to 90 in 10 increments Night setback Use to make Night setback settings Select Yes to enable the setting and No to disable the setting The temperature range and the start stop times can be set Filter information Use to check the filter status The filter sign can be reset Error information Use to check error information when an error occurs Check code error source refrigerant address unit model manufacturing number contact information dealer s phone number can be displayed The unit model manufacturing number and contact information need to be registered in advance to be displayed Maintenance Auto descending panel Auto descending panel Optional parts Up Down you can do Manual vane angle Use to set the vane angle for each vane to a fixed position
85. start up Self diagnosis of remote controller Communication error between the remote controller PLEASE WAIT is displayed for 6 and indoor unit minutes at most in case of indoor outdoor Communication error between the indoor and out unit communication error Check LED3 on door unit indoor controller board Outdoor unit protection device connector is open 1 When LEDS is not blinking Check indoor outdoor connecting wire for miswiring Converse wiring of S1 and S2 or break of S3 wiring 2 When LED3 is blinking Indoor outdoor connecting wire is normal Check LED display on outdoor controller circuit board Refer to 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Check protection device connector 63L and 63H for contact failure Refer to 10 9 TEST POINT DIAGRAM When pressing the remote controller After cancelling to select function from the remote Normal operation operation switch the OPERATION controller the remote controller operation switch will display is appeared but it will be not be accepted for approx 30 seconds turned off soon OCH577A 44 Phenomena Factor Countermeasure 4 Even controlling by the IR wireless remote controller no beep is heard and the unit does not start operat ing Operation display is indicated on IR wireless remote controller The pair number settings of the IR wireless remote controller and indoor controller board are mismatche
86. the unit performs heat ing operation however the capacity cannot be fully obtained Linear expansion valve fault Opening cannot be adjusted well due to linear expansion valve fault Refrigerant shortage Lack of insulation for refrigerant piping Filter clogging Heat exchanger clogging Air duct short cycle Bypass circuit of outdoor unit fault Discharging temperature and indoor heat exchanger temperature does not rise Inspect the failure by checking discharging pressure Replace linear expansion valve Q If refrigerant leaks discharging tempera ture rises and LEV opening increases Inspect leakage by checking the tempera ture and opening Check pipe connections for gas leakage Check the insulation Open intake grill and check the filter Clean the filter by removing dirt or dust on it If the filter is clogged indoor pipe tem perature rises and discharging pressure increases Check if heat exchanger is clogged by inspecting discharging pres sure Clean the heat exchanger Remove the blockage Check refrigerant system during operation 8 Q For 3 minutes after temperature adjuster turns off the compressor will not start operating even if temperature adjuster is turned on Q For 3 minutes after temperature adjuster turns on the compressor will not stop operating even if temperature adjuster is turned off Compressor stops operating immediately when turning off by the
87. transmission wiring method Check code Abnormal point and detection method Case Judgment and action Pipe temperature lt Cooling mode gt Detected as abnormal when the pipe tem perature is not in the cooling range 3 min utes after compressor start and 6 minutes after the liquid or condenser evaporator pipe is out of cooling range Note 1 It takes at least 9 minutes to detect Note 2 Abnormality P8 is not detected in drying mode Cooling range Indoor pipe temperature TH2 or TH5 intake temperature TH1 5 4 F 3 TH Lower temperature between liquid pipe temperature and condenser evaporator temperature lt Heating mode gt When 10 seconds have passed after the compressor starts operation and the hot adjustment mode has finished the unit is detected as abnormal when condenser evaporator pipe temperature is not in heat ing range within 20 minutes Note 3 It takes at least 27 minutes to detect abnormality Note 4 It excludes the period of defrosting Detection restarts when defrosting mode is over Heating range 5 4 F 3 C Condenser evaporator temperature 5 intake temperature TH1 lt M NET communication error gt Check Code Abnormal point and detection method Slight temperature difference between indoor room temperature and pipe lt liquid or condenser evaporator gt temperature thermistor Shortage of refrigerant Disconnected holder of pipe
88. valve position The pulse signal is being sent for about 20 seconds When the valve moves smoothly there is no sound or vibration occurring from the linear expansion valve however when the pulse number moves from to amp or when the valve is locked Pd sound can be heard than normal situation No sound is heard when the pulse number moves from 6 to in case coil is burn out or motor is locked by open phase Sound can be detected by placing the ear against the screw driv er handle while putting the screw driver to the linear expansion valve 500 pulse Opening a valve all the way o o Pulse number Extra tightening about 32 pulse 577 64 Linear expansion valve A24 30 36 42 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 lt Connection between the outdoor controller board and the linear expansion valve gt Outdoor controller board A Gray Lu Drive circuit 4 Orange 36 lt Opening a valve 8 gt 7 5655545352518 Closing a valve 1 2 3 4 5 6 7 8 1 The output pulse shifts in above order When linear expansion valve operation stops all output phases become OFF When t
89. when transmission from the units of same address is detected Note The address and attribute displayed at remote controller indicate the controller that detected abnormality There are 2 or more same address of controller of out door unit indoor unit FRESH MASTER or LOSSNAY Noise has entered into trans mission signal and signal was transformed Search the unit with same address as abnormali ty occurred If the same address is found turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more after the address is corrected and turn the power on again Check transmission waveform or noise on transmission wire Hardware error of transmission processor Transmission processor intended to transmit 0 but 1 appeared on transmission wire Note The address and attribute display at remote controller indicate the controller that detected abnormality Error is detected if waveform is transformed when wiring works of transmission wire of outdoor unit indoor unit FRESH MASTER or LOSSNAY are done or polarity is changed with the power on and transmission data collide each other Defective transmitting receiving circuit of transmission processor Transmission data is changed by the noise on transmission If the works of transmission wire is done with the power on turn off the power supply of outdoor unit and indoor unit and FRESH
90. 0 57 A 1 00 A Outdoor unit model PUY A12NHA6 PUY A18NHA6 PUY A24NHA6 PUY A30NHA6 PUY A36NHA6 PUY A42NHA6 Phase Single Single Single Single Single Single Cycle 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz 60 Hz Voltage 230 V 230 V 230 V 230 V 230 V 230 V Current Discharge pressure 5 3A 9 8A 94 18 1A 21 7A 20 4A Suction pressure Discharge temperature Condensing temperature Suction temperature Ref Pipe length Discharge pressure Suction pressure Discharge temperature Condensing temperature Suction temperature Ref Pipe length Indoor side Outdoor side ake air temperature DB ake air temperature WB ischarge air temperature DB ake air temperature DB ake air temperature WB ake air temperature DB ake air temperature WB ischarge air temperature DB ake air temperature DB ake air temperature WB 577 12 6 OUTLINES AND DIMENSIONS PUZ A18NHA6 PUZ A18NHA6 BS PUY A12 18NHA6 PUY A12 18NHA6 BS Unit mm lt in gt
91. 159 Indoor fan output value duty value 00 indicates fan control data _ For indoor DC brushless motor control 160 161 162 Indoor unit Model setting information Referto 13 2 1 Detail ContentsinRequest Code _ 163 Indoor unit Capacity setting information Referto 13 2 1 Detail Contentsin Request Code 164 Indoor unit SW3 information Undefined _ 165 Wireless pair No indoor control board side setting Referto 13 2 1 Detail Contents in Request Code _ 166 Indoor unit SW5 information Undefined _ 167 189 190 Indoor unit Microprocessor version information Examples Ver 5 01 0501 Ver 191 Indoor unit Microprocessor version information sub No Auxiliary information displayed after version information Examples Ver 5 01 A000 A000 192 764 765 Stable operation Heat mode This request code is not provided to collect data It is used to fix the operation state 766 Stable operation Cool mode This request code is not provided to collect data It is used to fix the operation state 4 This request code is not provided to collect data It is used to cancel the operation state that has been 767 Stable operation cancellation fixed by request codes 765 and 766 577 109 Ss 13 2 1 Detail Contents in Request Code mm 20 00 ____ LILI Operation state Request code 0 Data display
92. 2 2 Indoor 2 38 to 190 38 to 190 39 to 88 C When the temperature is 0 F or less and temperature are displayed by turns Indoor pipe temperature Cond Eva THS 2 Indoor 2 38 to 190 38 to 190 39 to 88 C When the temperature is 0 F or less and temperature are displayed by turns OCH577A Indoor room temperature TH1 46 to 102 85 46 to 102 8 to 39 C EENEG The black square m indicates a switch position SW2 setting Display detail Explanation for display Indoor setting temperature 62 to 86 62 to 86 17 to 30C Outdoor pipe temperature 2 phase pipe TH6 58 to 194 58 to 194 50 to 90 C When the temperature is 0 F or less and temperature are displayed by turns Outdoor outside temperature TH7 58 to 194 58 to 194 50 to 90 C When the temperature is 0 F or less and temperature are displayed by turns Outdoor heat sink temperature TH8 40 to 327 40 to 327 40 to 164 C When the temperature is O F or less and temperature are displayed by turns When the thermistor detects 100 F or more hundreds digit tens digit and ones digit are displayed by turns Discharge superheat SHd 32 to 360 Cooling TH32 TH6 Heating TH32 TH5 32 to 360 0 to 182C When the temperature is 100 F or mo
93. 5 3x 1 5 polar 1 Min 1 5 e Ki x E Remote controller Indoor unit 2 x AWG22 Non polar 2 x AWG22 Non polar 2 x 0 3 Non polar 2 x 0 3 Non polar Indoor unit L1 L2 Indoor unit Outdoor unit S1 S2 208 230 V AC 208 230 V AC 208 230 V AC 208 230 V AC rating Indoor unit Outdoor unit S2 S3 Remote controller Indoor unit 1 Maximum 393 ft 120 m 2 The 30 ft 10 m wire is attached in the remote controller accessory Maximum 1 500 ft 500 m 3 The figures are NOT always against the ground Notes 1 Wiring size must comply with the applicable local and national code 2 Use copper supply wires 3 Use wires rated 300 V or more for the power supply cables 4 Install an earth longer than other cables OCH577A 21 8 3 INDOOR OUTDOOR CONNECTING CABLE Outdoor power supply Wire No x Size 147 ft 45 m Max 164 ft 50 m Max 262 ft BO m Indoor unit Outdoor unit 3 X AWG16 polar 3 x AWG13 polar x AWG13 polar S3 separated Note The maximum cable length may vary depending on the condition of installation humidity or materials etc Indoor Outdoor separate power supply Wire No x Size Max 393 ft 120 m Indoor unit Outdoor unit 2 x Min AWG22 Note The optional indoor power supply terminal kit is necessary Be sure to connect the indoor outdoor connecting cables
94. 6 10 16 Control Linear expansion valve Oil Charged Ether FV50S 0 87 28 Refrigerant piping Pipe size OD Liquid 9 52 3 8 Pipe size OD Gas 15 88 5 8 Connection method Indoor Flared Connection method Outdoor Flared Height difference IU OU m Maximum 30 ft Maximum 100 OCH5 Piping length 77A m Maximum 30 Maximum 50 Maximum 50 Maximum 50 Maximum 50 ft Maximum 100 Maximum 165 Maximum 165 Maximum 165 Maximum 165 Service Ref PUY A12NHA6 PUY A12NHA6 BS PUY A18NHA6 PUY A18NHA6 BS PUY A24NHA6 PUY A24NHA6 BS PUY A30NHA6 PUY A30NHA6 BS PUY A36NHA6 PUY A36NHA6 BS PUY A42NHA6 PUY A42NHA6 BS Power supply ingle Hz Breaker size External finish Munsell 3Y 7 8 1 1 Heat exchanger Plate in coil Defrost method Crankcase heater Compressor Hermetic Model SNB130FQCM1 SNB130FQCM1 TNB220FLHM TNB220FLHM TNB220FLHM ANB33FCTMT Motor output 1 3 1 3 R L A 12 12 L R A 17 5 17 5 Starter type Inverter Fan drive x No Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 1 Propeller fan x 2 Fan motor output 0 040 0 040 0 075 0 075 0 075 0 086 0 086
95. 6 gt Min 350mm lt 13 25 32 gt FOUNDATION ES ZZZZ ZZ N 4 5 2 4 3 gt PIPING WIRING DIRECTION Min 500mm lt 19 11 16 gt Min 100mm lt 3 15 16 gt Piping and wiring connection can 2 sides should bo open i be made from the rear direction only the right left and rear side Minimum installation space for outdoor unit 1 In the place where short cycle tends to occur cooling and heating capacity and power consumption might get lowered 10 Air outlet guide optional PAC SG58SG E will help them improve 2 If air discharges to the wall the surface might get stained OCH577A 13 PUZ A24 30 36NHA6 BS PUY A24 30 36NHA6 BS PUZ A24 30 36NHA6 mm lt in gt Uni PUY A24 30 36NHA6 s B d BE 659 BEE A 8 B 6039 9VE L
96. 77A 62 10 7 HOW TO CHECK THE COMPONENTS lt Thermistor feature chart gt Low temperature thermistors Thermistor lt Liquid gt TH3 Thermistor lt 2 phase pipe gt TH6 Thermistor lt Ambient gt TH7 Thermistor lt Suction gt TH33 Thermistor RO 15 3 B constant 3480 2 1 1 t Rt 15exp 3480 57344 273 1 _ 1 T F RT 15 3480 273 T 321 8 273 32 F 0C 15 kQ 50 F 10 C 9 6 kQ 68 F 20 C 6 3 kQ 77 F 25C 5 2 Medium temperature thermistor Thermistor lt Heat sink gt TH8 Thermistor R50 17 kQ 2 B constant 4170 3 86 F 30 C 4 3 104 F 40 C 3 0 1 1 t C Rt 17 4170 273 t 323 1 1 T F 17 4170 273 T 32 1 8 323 32 F 0C 180kQ 77 F 25C 50 kQ 122 F 50 C 17 kQ 158 F 70 C 8 194 F 90 C 4kQ High temperature thermistor Thermistor lt Comp surface gt TH32 Thermistor R120 7 465 kQ 2 B constant 4057 2 1 1 t Rt 7 465exp 4057 27371 393 1 1 T F Rr 7 465 4057 273 32 1 8 393 68 F 20 C 250 158 F 70 C 34 kQ 86 F 30 C 160 kQ 176 F 80 C 24 kQ 104 F 40 C 104 194F 90C 17 5 kQ 122 F 50 C 140 F 60 C 48 212 F 100 C 13 0 kQ 230 F 110 C 9 8 kQ 577 63 50
97. 8 to 190 39 to 88 C When the temperature is O F or less and temperature are displayed by turns Example When 15 F 0 5s 0 5s 15 H 2s Outdoor heat sink temperature TH8 on error occurring 40 to 327 577 40 to 327 40 to 164 C When the temperature is O F or less and temperature are displayed by turns When the temperature is 100 F or more hundreds digit tens digit and ones digit are displayed by turns 88 UEM The black square m indicates a switch position SW2 setting Display detail Explanation for display Discharge superheat on error occurring 32 to 360 0 to 182 C SHd When the temperature is 100 F or more 32 to 360 hundreds digit tens digit and ones digit are displayed by turns Cooling TH32 TH6 Example When 150 F Heating TH32 TH5 0 55 0 55 25 Ln 50 32 to 266 0 to 130 C Sub cool on error occurring SC When the temperature is 100 F or more 32 to 266 hundreds digit tens digit and ones digit are displayed by turns Cooling TH6 TH3 Example When 115 Heating TH5 TH2 0 5s 0 5s 2s 1 15 Thermostat on time until error stops 0 to 999 0 to 999 When it is 100 minutes or more hundreds digit tens digit and ones digit are displayed by turns Example When 415 minut
98. 9 C Request 7 OCH577A 105 13 2 REQUEST CODE LIST Certain indoor outdoor combinations do not have the request code function therefore no request codes are displayed 577 106 3 8 Request content Description Unit Remarks Display range x 0 Operation state Referto 13 2 1 Detail Contentsin Request Code _ 1 Compressor Operating current rms 0 50 A 2 Compressor Accumulated operating time 0 9999 10 hours 3 Compressor Number of operation times 0 9999 100 times 4 Discharge temperature TH32 37 327 F 5 Outdoor unit Liquid pipe 1 temperature TH3 58 194 F 6 Outdoor unit Liquid pipe 2 temperature 40 194 E 7 Outdoor unit 2 phase pipe temperature TH6 58 190 E 8 Suction temperature TH33 58 194 R 9 Outdoor unit Outside air temperature TH7 58 190 F 10 Outdoor unit Heatsink temperature TH8 40 327 F 11 12 Discharge super heat SHd 0 327 F 13 Sub cool SC 0 234 F 14 15 16 Compressor Operating frequency 0 255 Hz 17 Compressor Target operating frequency 0 255 Hz 18 Outdoor unit Fan output step 0 10 Step Outdoor unit Fan 1 speed 19 B 0 9999 Only for air conditioners with DC fan motor 20 Outdoor sod 2 speed 0 9999 0 is displayed if the air con
99. ATE gt HEARING FOR E cag amp CONTINUOUS T T t i PE o NOISE O 10 I I 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz PUY A24 30 36NHA6 PUY A24 30 36NHA6 BS MODE SPL dB LINE 2 24 30 36 6 005 se PUZ A24 30 36NHA6 BS so 90 80 S S DN m 70 s J 70 5 Fi 60 D 50 2 o m 40 D 5 9 30 lt f 20 APPROXIMATE X7 lt CONTINUOUS 1 o NOISE O 10 I I 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz MICROPHONE 3 3ft UNIT 5ft GROUND 577 PUY A18NHA6 PUY A18NHA6 BS MODE 159098 LINE PUZ A18NHA6 COOLING 48 o o PUZ A18NHA6 BS HEATING 47 90 80 m 70 4 INC 70 I F L Es 50 E 2 1 J INE B SES 5 40 a i r INC 40 E o t 30 B 20 z mw EXE B dem 8 qi CI t 63 125 250 500 1000 2000 4000 8000 BAND CENTER FREQUENCIES Hz PUY A42NHA6 gt MODE SPL dB LINE PUZ A42NHA6 COOLING 51 PUZ A42NHA6 BS HEATING 55 e e 90 0 0002 ubar 20 OCTAVE BAND SOUND PRESSURE LEVEL dB 0 dB 10
100. C Check if power supply voltage decreases GCheck the wiring of CN52C Check the wiring of 1 blinking Abnormality of room temperature thermistor TH1 Abnormality of pipe temperature thermistor Liquid TH Abnormality of pipe temperature thermistor Condenser Evaporator TH5 Check if connectors CN20 CN21 CN29 and CN44 on indoor controller board are not disconnected Measure resistance value of indoor thermistors 2 blinking Abnormality of drain sensor DS Float switch connector open FS Indoor drain overflow protection Check if connector CN31 CN4F on indoor controller board is not disconnected Measure resistance value of indoor thermistors GMeasure resistance value among terminals on drain pump using a tester Check if drain pump works GCheck drain function 3 blinking Freezing cooling overheating heating protection Check if indoor unit has a short cycle on its air duct Check if heat exchanger and filter is not dirty GMeasure resistance value on indoor and outdoor fan motors Check if the inside of refrigerant piping is not clogged 4 blinking Abnormality of pipe temperature Check if indoor thermistors 2 and TH5 are not disconnected from holder Check if stop valve is open Check converse connection of extension pipe on plural units connection Check if indoor outdoor connecting wire is connected correctly on plural units connec
101. CH577A 24 1 Refrigerant collecting pump down Perform the following procedures to collect the refrigerant when moving the indoor unit or the outdoor unit Supply power circuit breaker When power is supplied make sure that CENTRALLY CONTROLLED is not displayed on the remote controller If CENTRALLY CONTROLLED is displayed the refrigerant collecting pump down cannot be completed normally Start up of the indoor outdoor communication takes about 3 minutes after the power circuit breaker is turned on Start the pump down operation 3 to 4 minutes after the power circuit breaker is turned ON After the liquid stop valve is closed set SW1 1 on the control board of the outdoor unit to ON The compressor outdoor unit and ventilators indoor and outdoor units start operating and refrigerant collecting operation begins LED1 and LED2 on the control board of the outdoor unit are lit Only set SW1 1 to ON if the unit is stopped However even if the unit is stopped and SW1 1 is set to ON less than three minutes after the compressor stops the refrigerant collecting operation cannot be performed Wait until compressor has been stopped for three minutes and then set SW1 1 to ON again Because the unit automatically stops in about two to three minutes when the refrigerant collecting operation is completed LED1 off LED2 lit be sure to quickly close the gas stop valve If LED1 is lit and LED2 is off and the
102. Disconnection of transmission connector CN2M of indoor unit Defective transmitting receiv ing circuit of indoor unit or LOSSNAY 7 lf displayed address or attribute is non existent OCH577A The unit of former address does not exist as address Switch has changed while the unit was energized Abnormality is detected when indoor unit transmit ted because the address of FRESH MASTER and LOSSNAY are changed after sequential operation of FRESH MASTER and LOSSNAY by remote controller 43 Same as mentioned in A7 of the previous page Check code Abnormal point and detection method Case M NET NO RESPONSE Transmitting condition is Check transmission waveform or noise on Abnormal if a message was transmitted repeated fault because of transmission wire and there were reply ACK that message noise and the like off the power supply of outdoor unit Judgment and action was received but response command Extension of transmission wire and indoor unit and FRESH MASTER or does not return Transmitting side detects voltage and signal is caused abnormality every 30 seconds 6 times by over range transmission continuously WITE Note The address and attribute displayed Maximum distance at remote controller indicate the con troller that did not reply ACK LOSSNAY at the same time for 2 minutes or more and turn the power on again If mal 656 ft function was accidental t
103. E ON OFF ji TEMP v ol FAN AUTOSTOP Ei MODE VANE AUTOSTART amp Or CHECK LOUVER TEST RU RESET CLOCK Qoo O HE OCH577A 104 13 MONITORING THE OPERATION DATA BY THE REMOTE CONTROLLER 13 1 HOW TO MONITOR THE OPERATION DATA 13 1 1 PAR 30MAA PAR 31MAA Details on the operation data including each thermistor temperature and error history can be confirmed with the remote controller Select Service from the Main menu and press the Q button Check menu 1 1 Eron history Se Cw efrigerant volume checi Garen leak check Select Check with the 1 F2 button and press the button Smooth maintenance gt Request code Service menu gt Select Request code with the 1 F2 button and press the button Set the Refrigerant address and Request code EE gt Ref address E Select the item to be changed with the F1 or F2 button Requestcode _ 884 Select the required setting with the 24 button Request si m lt Ref address gt setting 0 15 T e m lt Request code gt setting ma mu ma Fl Fe 4 Press the button Data will collected and displayed h Request code kel address E Requestcode 004 Request code 004 Discharge temperature 6
104. GRAM DUTOT 16 8 WIRING SPECIFICATIONS 20 9 REFRIGERANT SYSTEM DIAGRAM 23 10 TROUBLESHOOTING munauannaauannaaannasannananaasannas 26 11 EASY MAINTENANCE FUNCTION 91 12 FUNCTION SETTING 95 13 MONITORING THE OPERATION DATA THE REMOTE CONTROLLER 105 14 DISASSEMBLY PROCEDURE 114 PARTS CATALOG 577 SE fir SLIM 1 REFERENCE MANUAL INDOOR UNIT Model name Service Ref Service manual No PLA A12 18 24 30 36 42BA6 PLA A12 18 24 30 36 42BA6 OCH581 OCB581 PCA A24 30 36 42KA6 PCA A24 30 36 42KA6 TH OCH585 OCB585 PCA A24 30 36KA4 PCA A24 30 36KA4 TH OCH501 PCA A42KA5 42 5 OCB501 PKA A12 18HA6 PKA A12 18HA6 OCH580 OCB580 PKA A24 30 36KA6 PKA A24 30 36KA6 TH OCH584 OCB584 PEA A12 18AA6 PEA A12 18AA6 HWE0807 PEAD A24 30 36 42AA5 PEAD A24 30 36 42AA5 HWE14030 2 SAFETY PRECAUTION 2 1 ALWAYS OBSERVE FOR SAFETY Before obtaining access to terminal all supply circuits must be disconnected Preparation before the repair service Prepare the proper tools Prepare the proper protectors Provide adequate ventilation After stopping the operation of the air conditioner turn off the power supply breaker Discharge the condenser before the work involving the
105. If filters are clogged the airflow amount will be reduced and the unit capacity will be lowered See the instruction manual that came with the product for how to clean the filters Check there is enough space around the air conditioner If there are any obstacles in the air intake or air outlet of indoor outdoor units they block the airflow direction so that the unit capacity will be lowered Sound comes out from the air conditioner sometimes gas escaping sound is heard Q This is not a malfunction This is the sound which is heard when the flow of refrigerant in the air conditioner is switched Acracking sound is heard sometimes This is not a malfunction This is the sound which is heard when internal parts of units expand or contract when the temperature changes A buzzing sound is heard sometimes This is not a malfunction This is the sound which is heard when the outdoor unit starts operating Aticking sound is heard from the outdoor unit sometimes This is not a malfunction This is the sound which is heard when the fan of the outdoor unit is controlling the airflow amount in order to keep the optimum operating condition A sound similar to water flowing is heard from the unit This is not a malfunction This is the sound which is heard when the refrigerant is flowing inside the indoor unit Something is wrong with the blower the setting
106. MITSUBISHI ELECTRIC SPLIT TYPE HEAT PUMP AIR CONDITIONERS SPLIT TYPE AIR CONDITIONERS August 2015 No OCH577 SERVICE MANUAL R410A REVISED EDITION A e EE Outdoor unit Model Name Service Ref PUZATSNHAS PUZ A18NHA6 E PAE ARANHAS PUZ A24NHA6 j EE in PUZ A30NHA6 PUZ A30NHA6 REVISED EDITION A PUZ AS6NHAG PUZ A36NHA6 Some descriptions have been PUZ A42NHA6 PUZ A42NHA6 modified PUZ A18NHAG BS PUZ A18NHA6 BS PUZ AS aNHAG BS PUZ A24NHA6 BS Please void OCH577 PUZ A32NHAC BS PUZ A30NHAG BS PUZ A35NHAC BS PUZ A36NHAG BS PUZ A42NHA6 BS PUZ A42NHA6 BS Notes vumm PUY A12NHA6 e PUY AT8NHAG PUY A18NHA6 RoHS compliant products ER PUY A24NHA6 PUY A24NHA6 lt G gt mark on the spec name PUY A30NHA6 PUY A30NHA6 plate PUY A36NHA6 PUY A36NHA6 PUY A42NHA6 PUY A42NHA6 PUY A12NHA6 BS PUY A12NHA6 BS PUY A18NHA6 BS PUY A18NHA6 BS PUY A24NHA6 BS PUY A24NHA6 BS PUY A30NHA6 BS PUY A30NHA6 BS PUY A36NHA6 BS PUY A36NHA6 BS PUY A42NHA6 BS PUY A42NHA6 BS CONTENTS 1 REFERENCE MANUAL munnunannaasnnaaannaaanaanannnannn 2 2 SAFETY PRECAUTION mununusuussnsansasannasnanannanana 2 3 FEATURES 6 4 SPECIFICATIONS mununasnsansanansananananananasasasssnassnas 7 5 DATA 9 6 OUTLINES AND DIMENSIONS 13 7 WIRING DIA
107. No normal Check wiring Check power board Yes open Normal Replace the noise filter circuit board and check 52C relay wiring power board and ACTM Noise filter circuit board 198 253 V AC 208 230 V 10 P 12 id gt 4 WHT Outdoor Controller Circuit Board 12 V DC from outdoor controller circuit board CN52C Power circuit board 3 Conv To outdoor controller lt Circuit circuit board CNDC PNK 1 280 350 V CNDC PNK ON OCH577A of 10 6 4 Check method of noise filter circuit board PUZ A30 36 42NHA6 PUZ A30 36 42NHA6 BS PUY A30 36 42NHA6 PUY A30 36 42NHA6 BS 1 Noise filter circuit board check Note To check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited 198 253 V AC lt Is the voltage of main incoming power lt Check the breaker and power m Yes Is the voltage of CNAC WHT on No lt Check wirin outdoor controller circuit board CNAC WHT ee d iiltar circuitibaard 198 253 V AC P Yes Turn off the incoming pow
108. Removing the bypass valve Photo 10 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 x 12 in the rear of the unit and remove the right side panel 5 Remove the bypass valve coil See Photo 8 6 Recover refrigerant 7 Remove the welded part of bypass valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Bypass valve Bypass valve fixing screw 12 Removing the high pressure switch 63H Photo 11 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 x 12 in the rear of the unit and remove the right side panel 5 Pull out the lead wire of high pressure switch 6 Recover refrigerant 7 Remove the welded part of high pressure switch Bypass valve coil Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the high pressure switch cover it with a wet cloth to prevent it from heating 210 F or more then braze the pipes so that the inside of pipes are not oxidized 4 way valve Linear expansion High pressure valve coil LEV A switch 63H 13 Remo
109. TENHAG P m m mA P id 12345678 123456 PUY M2NHA6 HB a 2X AE 12345678 123456 PUY AtENHAO oP Po i E zx ud E N 123458678 123456 r3 X2 SW5 1 to 4 Function switch a Leen HH B al amp 2 L1 12 GR 51 52 53 TB1 D wDooR et ty POWER SUPPLY UNIT OCH 577A 208 230V 60Hz XUse copper supply wires 16 Utilisez des fils d alimentation en cuivre PUZ A24NHA6 PUZ A24NHA6 BS PUY A24NHA6 PUY A24NHA6 BS NAME Terminal Block lt M NET connection gt
110. 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 x 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and then remove the right side panel 8 Remove 3 separator fixing screws 4 x 10 and remove the separator 9 Recover refrigerant 10 Remove the 3 points of the motor for compressor fixing nut using spanner or adjustable wrench 11 Remove the welded pipe of motor for compressor inlet and outlet and then remove the compressor Note Recover refrigerant without spreading it in the air Photo 10 Valve bed Separator Compressor MC Separator fixing screw Compressor fixing nut 13 Removing the accumulator 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 x 12 and remove the front cover panel See Photo 3 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Phot
111. Y A24NHA6 Q A GO A d oh PUZ A42NHAG The black square indicates a switcl ion PUY A42NHAG O on O N OM T CO N 2 Power failure automatic recovery can be set by either remote controller or this DIP SW If one of them is set to ON Auto recovery activates Please set Auto recovery basically by remote controller because not all units have DIP SW Please refer to the indoor unit installation manual 3 SWT 1 2 are used for demand control SW7 1 2 are effective only at the demand control Refer to the next page Special function b 4 Please do not use SW7 3 to 6 usually Trouble might be caused by the usage condition 5 SWS 1 to 4 Function switch 2 Function of connector Action by open short operation Types Connector Function Effective timing Short Open Connector CN31 Emergency operation Start Normal When power supply ON 577 78 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 dem
112. also applied when the unit is turned on and off by remote controller or thermostat Check code appears and blinks on the display of remote controller Check code will be displayed if any protection devices of the air conditioner are actuated What is check code Refer to SELF DIAGNOSIS ACTION TABLE Check if servicing is required for the error Remote controller PLEASE WAIT is displayed on the screen Wait around 2 minutes An automatic startup test will be conducted for 2 minutes when power is supplied to the air conditioner PLEASE WAIT will be kept being displayed while that time FILTER is displayed on the screen This indicates that it is time to clean the air filters Clean the air filters Press the FILTER button on the remote controller twice to clear FILTER from the display See the operation manual that came with the product for how to clean the filters Display time of FILTER depends on the model Long life filter 2500 hrs Standard filter 100 hrs STANDBY is displayed on the screen This is displayed when the unit starts HEAT operation when the thermostat puts the compressor in operation mode or when the outdoor unit ends DEFROST operation and returns to HEAT operation The display will automatically disappear around 10 minutes later While STANDBY is displayed on the remote controller the airflow amount will be restricted be
113. and input located on the outdoor controller board enables to control compressor operation frequency Note The performance depends on the load of conditioned outdoor temperature How to wire lt Low level sound priority mode circuit Insulate this point securely as Adaptor fi t this is not used signal input Outdoor unit Purchased locally PAC SC36NA controller board 3 1 Relay supply 1 X CNDM C m SW1 Switch lt rans A X Relay Contact spec DC1mA Max 10 m 33 ft including local wiring 1 Make the circuit as shown above with Adaptor for external signal input PAC SC36NA 2 SW1 to on for Low level sound priority mode Turn SW1 to off to release Low level sound priority mode and normal operation b Demand control Local wiring Demand control is available by external input In this mode power consumption is decreased within the range of usual 0 to 100 How to wire Basically the wiring is the same as a Connect an SW1 which is procured at field to the between Orange and Red 1 and 3 of the Adaptor for external signal input PAC SC36NA and insulate the tip of the brown lead wire It is possible to set it to the following power consumption compared with ratings by setting the SW7 1 2 SW7A SW7 2 Max PEE euer OFF OFF 0 Operation stop ON OFF 5096 OFF ON 7596 OCH577A 79 lt Display functio
114. 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 M4 x 6 5 Remove the 4 way valve coil by sliding the coil toward you 6 Disconnect the connector 21S4 green on the controller board in the electrical parts box Removing the linear expansion valve coil 4 Remove the linear expansion valve coil by sliding the coil upward 5 Disconnect the connectors LEV A white on the controller circuit board in the electrical parts box Removing the bypass valve coil 4 Remove the bypass valve coil fixing screw M4 x 6 5 Remove the bypass valve coil by sliding the coil upward 6 Disconnect the connector SV2 blue on the controller circuit board in the electrical parts box 4 way Linear expansion Bypass Bypass valve valve valve coil LEV A valve coil fixing coil SV screw 4 way valve coil 9 Removing the 4 way valve Photo 9 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 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 5 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and then remove the right side panel 6 Remove the 4 way valve
115. and exit the Remote controller check menu screen press the or the 5 button The remote controller will not reboot itself Remote controller check Start checking Begin V ES _ j OK No problems are found with the remote controller Check other parts for problems E3 6832 There is noise on the transmission line or the indoor unit or another remote controller is faulty Check the transmission line and the other remote controllers NG ALLO ALL1 Send receive circuit fault The remote controller needs replac ing ERC The number of data errors is the discrepancy between the number of bits in the data transmitted from the remote controller and that of the data that was actually transmitted over the transmission line If data errors are found check the transmission line for external noise interference Cw If the button is pressed after the remote controller check results are dis played remote controller check will end and the remote controller will automati cally reboot itself Check the remote controller display and see if anything is displayed including lines Nothing will appear on the remote controller display if the correct voltage 8 5 12 V DC is not supplied to the remote control ler If this is the case check the remote controller wiring and indoor units OCH577A 32 Remote controller check results screen Remote contro
116. ates When the fan operates the humidifier also operates Change of Standard defrosting control For high humidit Meaning of Function setting Mode02 indoor temperature detecting o Indoor temperature ta REMOTE REMOTE REMOTE MAIN en o MAIN N N o1 Average data of the ta A B 2 ta A B 2 sensor on all the indoor units No2 Data of the sensor ta A ta B on the indoor unit that connected with remote controller No3 Data of the sensor ta C on main remote controller 577 95 2 Functions available when setting the unit number to 01 03 or AL 07 in case of IR wireless remote controller When setting functions for an indoor unit in an independent system set the unit number to 01 referring to 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 setting the indoor unit number When setting the same functions for an entire simultaneous Twin indoor unit system set refrigerant address to AL 07 in case of IR wireless remote controller referring to setting the indoor unit number Function Settings Mode No Wired remote controller RF thermistor Not available Initial setting Factory setting 4 Way cassette Ceiling suspended Wall mounted
117. ature changes by 1 C the pressure will change by about 0 03 MPa 0 3 kgf cm G Make the necessary corrections 4 If the pressure decreases in steps 2 or 3 there is a gas leak Look for the source of the gas leak ON I A Local pipe Sealed same way for gas side Stop valve Liquid side Pipe cover Stop valve Gas side Do not use a wrench here O Service port Refrigerant leakage may result Open Close section D Use 2 wrenches here 3 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 lt SW4 gt operation mode cooling heating can be set up Set the operation mode cooling heating using SW4 2 Turn on SW4 1 to start test run with the operation mode set by SW4 2 ON Turn off SW4 1 to finish the test run OFF 8 1 2 There may be a faint knocking sound around the machine room after power is supplied but this is not a problem with the product because the linear expansion valve is just moving to adjust opening pulse There may be a knocking sound around the machine room for several seconds after compressor starts Stop Opera
118. be careful that stress is not added to lead wire and main body is not wound by lead wire If the stopper is not firmly attached to main body coil may be detached from the main body and that can cause defective operation of lin ear expansion valve To prevent piping stress be sure to attach the coil holding the main body of linear expansion valve firmly Otherwise pipe may break 577 67 SSS 10 8 EMERGENCY OPERATION 1 When the check codes shown below are displayed on outdoor unit or microprocessor 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 When following abnormalities occur emergency operation will be available Inspected content Open short of pipe thermistor TH3 TH6 Indoor outdoor unit communication error Signal receiving error Outdoor unit Indoor outdoor unit communication error Transmitting error Indoor unit Communication error other than outdoor unit Communication error between outdoor controller board and M NET board Serial communication error 2 Check the following items and cautions for emergency operation Make sure that there is no abnormality in outdoor unit other than the above abnormalities Emergency operation will not be available when check codes ot
119. cause the indoor unit s heat exchanger is not fully heated up In addition to that the up down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body The up down vane will return to the setting specified by the remote controller when STANDBY is released DEFROST is displayed on the screen No air comes out of the unit OCH577A The outdoor unit gets frosted when the outside temperature is low and the humidity is high DEFROST indicates the DEFROST operation is being performed to melt this frost The DEFROST operation ends in around 10 minutes at most 15 minutes During the DEFROST operation the indoor unit s heat exchanger becomes cold so the blower is stopped The up down vane will be automatically set to horizontal blow in order to prevent cold air from directly blowing out to human body The display will turn into STANDBY when DEFROST operation ends 50 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 Check if filters are not dirty and clogged
120. ch gt 51 52 55 Relay CY1 CY2 Capacitor SW6 Switch Model Select P B Power Circuit Board SW7 Switch lt Function Switch gt TABR S Connection Terminal lt L1 L2 Phase gt SW8 Switch Function Switch TABU V W Connection Terminal lt U V W Phase gt SW9 Switch Function Switch When M NET adapter is connected 63H LEVA 1 Zen 9 999 55 55554 oss Gooey nmn M NET ADAPTER T WT 13 12 1 4 12 1 6 131 5 eS TH33 TH32 TH7 6 TH3 LEV A CNVMNT CNMNT GEB SEE S E 2 YLW BLK RED WHT HT WHT WHT BE i SON op 80 Od grsssssssssssg m S SS yp 63H WHT on Yw CN52C 3 REP 2E 3 0 WHT WHT 5 EEN TRANS 12 EA T 9900000 Se 2 CNDC 2 NN PNK 25 5 F2 CNAC a 8 5 CNS WHT x x x wn Fi LES Fa 311 5 2 3 ss 3 4 GRN BLU EA WHT J 2184 PUZ only RED RED RED oi wHT ren WHT uc ACL n M NET ADAPTER MS M SYMBOL NAME W ATM TL Se i TB7 Terminal Block lt M NET connection gt x gl E CNS Connector lt Transmission gt sz E EN CND Connector Power Supply os 17 2 4 14 Sa CN2M Connector lt M NET communication gt RED 219 62 IPM 1 pop 2 WHT 2 en CN3 1 AES RED E fa n 1 rj TABS WHT Tus E der 28 CN2 9 65 WHT Z 58 7895 1 2 M 7 2 1 FT7 x1 MODEL SELECT W is the switch position eu MODEL Swe SW5 5 6 X2 DE PUZ A
121. coil See Photo 8 4 way valve 7 Recover refrigerant 8 Remove the welded part of 4 way valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the 4 way valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized 10 Removing the linear expansion 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 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 5 Remove 3 right side panel fixing screw 5 x 12 in the rear Linear expansion Linear expansion of the unit and then remove the right side panel valve coil LEV A valve 6 Remove the linear expansion valve See Photo 8 7 Recover refrigerant 8 Remove the welded part of linear expansion valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the right side panel Note 3 When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized OCH577A 121 OPERATING PROCEDURE PHOTOS 11
122. ctor 63H on outdoor controller board is not disconnected GCheck if heat exchanger and filter is not dirty Measure resistance values among terminals on linear expansion valve using a tester 3 blinking Abnormality of outdoor fan motor rotational speed Check the outdoor fan motor 4 blinking Compressor overcurrent breaking Start up locked Compressor overcurrent breaking Abnormality of current sensor P B Abnormality of power module Check if stop valves are open Check looseness disconnection and converse connection of compressor wiring Measure resistance values among terminals on compressor using a tester Check if outdoor unit has a short cycle on its air duct 5 blinking Open short of discharge thermistor TH4 Open short of outdoor thermistors TH3 TH6 TH7 TH8 and TH33 Check if connectors TH3 TH4 TH6 TH7 and TH33 on outdoor controller board and connector CN3 on outdoor power board are not disconnected Measure resistance value of outdoor thermistors 6 blinking Abnormality of heatsink temperature Check if indoor outdoor units have a short cycle on their air ducts Measure resistance value of outdoor heatsink thermistor TH8 7 blinking Abnormality of voltage Check looseness disconnection and converse connection of compressor wiring Measure resistance value among terminals on compressor using a tester Check the continuity of contactor 52
123. d Check the pair number settings 5 When operating by the IR wireless remote controller beep sound is heard however unit does not start operating No operation for 2 minutes at most after the power supply ON Hand held remote controller operation is prohibited Remote controlling adaptor is connected to CN32 on the indoor controller board Hand held remote controller operation is prohibited by centralized controller etc since it is connected to MELANS Refer to factor of phenomena No 2 on previous page Normal operation Normal operation Check the details of phenomena No 2 on previous page Remote controller display works normally and the unit performs cool ing operation however the capacity cannot be fully obtained The air does not cool well Refrigerant shortage Filter clogging Heat exchanger clogging Air duct short cycle If refrigerant leaks discharging temperature rises and LEV opening increases Inspect leakage by checking the temperature and opening Check pipe connections for gas leakage Open intake grille and check the filter Clean the filter by removing dirt or dust on it If the filter is clogged indoor pipe temperature rises and discharging pressure increases Check if heat exchanger is clogged by inspecting discharging pressure Clean the heat exchanger Remove the blockage 7 Remote controller display works normally and
124. d L2 P and L2 P and lo L2 and lo 1 The symptom when the unit is in open error condition is described to determine open error by tester check 2 SW2 setting wa ON Code 20 display 1 6 OCH577A 76 _____ 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS 1 Function of switches The black square indicates a switch position Action by th itch ti Function by the switch operation Effective timing ON OFF When compressor is operatin Manual defrost 1 Start Normal in heating Operation u is Abnormal history clear Clear Normal Off or operating Refrigerant address When power supply ON setting Test run Operating Under Test mode setting Heating Cooling No function No function Separate indoor outdoor unit power supplies Not used When power supply ON Pump down Normal Under suspension 1 Manual defrost should be done as follows Change the DIP SW1 1 on the outdoor controller board from OFF to ON Manual defrost will start by the above operation 1 if all these conditions written below are satisfied Heat mode setting 10 minutes have passed since compressor started operating or previous manual defrost is finished Pip
125. d wire 6 Remove an electrical parts box fixing screw 4 x 10 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and Terminal block Electrical parts box Electrical parts 1 hook on the right TB1 box fixing screw OCH577A 119 OPERATING PROCEDURE PHOTOS 4 Removing the thermistor lt 2 phase pipe gt TH6 Photo 4 Thermist 1 Remove the service panel See Figure 1 Controller Electrical P sa em 2 Remove the top panel See Figure 1 circuit board parts box TH6 3 Disconnect the connectors TH6 and TH7 red on the C B 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 2 phase pipe TH6 from the sensor holder Note In case of replacing thermistor 2 phase pipe TH6 replace it together with thermistor Ambient TH7 since they are combined together Refer to No 5 below to remove thermistor lt Ambient gt 5 Removing the thermistor lt Ambient gt TH7 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 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 See Photo 4 5 Pull out the thermistor lt Ambient gt TH7 from the sensor holder
126. digit are displayed by turns Example When 105 minutes 0 5s 0 5s 2s 1 gt 05 gt H 84 Eed The black square m indicates a switch position SW2 setting Display detail Explanation for display The number of connected indoor units 0 to 3 The number of connected indoor units are dis played Capacity setting display Displayed as an outdoor capacity code Capacity A12N A18N A24N Capacity A30N A36N A42N Code display Outdoor unit setting information The tens digit Total display for applied setting Setting details Display details H P Cooling only 0 HP 1 Cooling only Single phase 3 phase O Single phase 2 3 phase The ones digit Setting details Display details Defrosting switch 0 Normal 1 For high humidity Example When heat pump 3 phase and defrosting normal are set up 20 is displayed Code display Indoor pipe temperature Liquid TH2 1 Indoor 1 38 to 190 38 to 190 39 to 88 C When the temperature is 0 F or less and temperature are displayed by turns Indoor pipe temperature Cond Eva TH5 1 Indoor 1 38 to 190 38 to 190 39 to 88 C When the temperature is 0 F or less and temperature are displayed by turns Indoor pipe temperature Liquid TH
127. ditioner is a single fan Only for air conditioners with DC fan motor type 21 22 LEV A opening 0 500 Pulses 23 LEV B opening 0 500 Pulses 24 25 Primary current 0 50 A 26 DC bus voltage 180 370 V 2n 28 29 Number of connected indoor units 0 4 Units 30 Indoor unit Setting temperature 62 86 P 31 Indoor unit Intake air temperature lt Measured by thermostat gt 46 102 F 30 Indoor unit Intake air temperature Unit No 1 46 102 F O is displayed if the target unit is not present lt Heat mode 4 deg correction gt Indoor unit Intake air temperature Unit No 2 33 46 102 F t lt Heat mode 4 deg correction gt 34 Indoor unit Intake ain tempoeratur Unit No 3 46 102 F A lt Heat mode 4 deg correction gt 35 Indoor unit Intake air temperature Unit No 4 46 102 F Heat mode 4 deg correction 36 37 Indoor unit Liquid pipe temperature Unit No 1 38 190 E 0 is displayed if the target unit is not present 38 Indoor unit Liquid pipe temperature Unit No 2 38 190 1 39 Indoor unit Liquid pipe temperature Unit No 3 38 190 E T 40 Indoor unit Liquid pipe temperature Unit No 4 38 190 F t 41 42 Indoor unit Cond Eva pipe temperature Unit No 1 38 190 0 is displayed if the target unit is not present 43 Indoor unit Cond Eva pipe temperature Unit No 2 38 190 E t 44 Indoor unit Cond Eva pipe temperature Unit No 3 38 190 F t
128. door outdoor communication error Signal receiving error Outdoor unit E9 Indoor outdoor communication error Transmitting error Outdoor unit Miswiring of indoor outdoor unit connecting wire excessive number of indoor units 4 units or more Eb Miswiring of indoor outdoor unit connecting wire converse wiring or disconnection EC Startup time over Communication error except for outdoor unit OCH577A 82 The black square m indicates switch position SW2 setting Display detail Explanation for display Pipe temperature Liquid TH3 58 to 194 58 10194 50 to 90 C When the coil thermistor detects 0 F or below and temperature are displayed by turns Example When 10 F 0 55 4 gt 10 Comp Surface temperature TH32 37 to 327 37 to 327 3 to 164 C 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 5s 0 55 25 1 gt 05 Output step of outdoor FAN 0 to 10 The number of ON OFF times of com pressor 0 to 9999 0 to 9999 When the number of times is 100 or more hundreds digit tens digit and ones digit are displayed by turns Example When 42500 times 425 x 100 times 0 5s 0 5s 2s 4
129. e 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 Set the outdoor unit s refrigerant address Hold down the FILTER C mode is 15 to 28 and TEST Press the G CLOCK buttons C D to select the desired buttons simultaneously for at least 2 seconds FUNCTION will start to blink refrigerant address The refrigerant address changes from 00 to 15 This operation is not possible for single refrigerant systems then the remote controller s display content will change as shown below amas n PRINS mm H NE Refrigerant address FLUIMCTIOIM Axes display section TEETH Ss If the unit stops after blinked for 2 seconds or 88 blinks in the room temperature display area for 2 seconds a transmission error may have occurred Check to see if there are any sources of noise or interference near the transmission path Note If you have made operational mistakes during this procedure exit function selection see step then restart from step Set the indoor unit number Press the CLOCK buttons and CA D to select the unit number Pressthe button so that blinks in the unit number display of the indoor unit for which you want to perf
130. e of indoor or out door units Turn the power off and on again to check Replace indoor controller board or outdoor controller circuit board if abnormal ity is displayed again E9 6841 Indoor outdoor unit communication error Transmitting 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 find blank of transmission path for 3 minutes Indoor outdoor unit connecting wire has contact failure Defective communication circuit of outdoor controller circuit board Noise has entered power supply Noise has entered indoor out door unit connecting wire D Check disconnection or looseness of indoor outdoor unit connecting wire Turn the power off and on again to check Replace outdoor controller circuit board if abnormality is displayed again Non defined check code This code is displayed when non defined check code is received Noise has entered transmission wire of remote controller Noise has entered indoor out door unit connecting wire Outdoor unit is not a power inverter models DO Turn the power off and on again to check Replace indoor controller board or outdoor controller circuit board if abnormality is displayed again 9 Replace outdoor unit with power inverter type outdoor unit Ed 0403 Serial
131. e rear side and detach the back panel 2 Removing the fan motor Photo 3 1 Remove the top panel See Photo 1 2 Remove the front panel See Photo 1 3 Remove 1 nut M6 left screw and detach the propeller 4 Disconnect the connector CNF1 on the controller circuit board in the electrical parts box 5 Loosen the clamp for the lead wire in the motor support 6 Remove 4 fan motor fixing screws 4 x 18 and detach the fan motor See Photo 3 Nut Photo 4 Fan motor MF 1 j Motor support Fan motor fixing screws OCH577A 114 OPERATING PROCEDURE PHOTOS 3 Removing the electrical parts box Photo 5 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 Disconnect the indoor outdoor connecting wire from Electrical parts box Controller circuit terminal block SEN 5 Remove all the following connectors from controller circuit board fan motor linear expansion valve thermistor lt Outdoor pipe gt thermistor lt Shell gt thermistor lt Outdoor 2 phase pipe gt thermistor lt Outdoor gt high pressure switch four way valve and bypass valve Pull out the disconnected wire from the electrical parts box lt Diagram symbol in the connector housing gt Fan motor CNF1 Linear expansion valve LEV A Thermistor lt Liquid gt TH3 Thermistor lt Comp surface gt TH32 Thermistor lt 2 phase pipe
132. e temperature is less than or equal to 46 F 8 C Manual defrost will finish if certain conditions are satisfied Manual defrost can be done if above conditions are satisfied when DIP SW1 1 is changed from OFF to ON After DIP SW1 1 is changed from OFF to ON there is no problem if DIP SW1 1 is left ON or changed to OFF again This depends on the service conditions Continue to the next page OCH577A Type of e Action the switch operation Switch Witch No Function ON OFF No function Effective timing Power failure automatic recovery 2 Auto recovery No auto recovery When power supply ON No function Model select Following SW5 6 reference SW7 1 SW7 2 switch ON Setting of demand OFF OFF 0 Operation stop control 3 ON OFF 5096 OFF ON 75 Max Hz setting cooling Max Hz cooling x 0 8 Normal Max Hz setting heating Max Hz heating x 0 8 Normal No function Defrost setting For high humidity Normal No function Function switch Valid Normal No function DIP switch MODEL MODEL ON ON PUZ A18NHAG OFF OFF PUZ A30NHA6 PUY A12NHAG cet d PUZ A36NHAG Model select PUY ATENHA ge a B oe PUY A3ONHAG PUZ A24NHA6 L I PUY A36NHAG 34567 PU
133. easily by removing the back panel Note 3 When installing the high pressure switch cover it with a wet cloth to prevent it from heating 210 F or more then braze the pipes so that the inside of pipes are not oxidized Photo 11 High pressure switch 63H Charge plug 11 Removing the reactor ACL 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 back panel See Photo 1 5 Remove 3 reactor fixing screws 4 x 20 and remove the reactor Note The reactor is attached to the rear of the electrical parts box Reactor fixing screws Photo 12 Electrical parts box Reactor fixing screws OCH577A 117 OPERATING PROCEDURE PHOTOS 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 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 3 separator fixing screws 4 x 10 and remove the separator 8 Remove the thermistor lt Comp surface gt TH32 Refer to procedure 6 9 Recover refrigerant 10 Remove 3 compressor fixing nuts by using spanner or adjustable wrench 11 Remove the welded pipe of motor for compressor inlet and outlet Note Recover refrigerant without spreading it
134. ection Defective compressor Defective outdoor power circuit board 36 Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 10 9 TEST POINT DIAGRAM Outdoor power circuit board Check compressor referring to 10 6 HOW TO CHECK THE PARTS Replace outdoor power circuit board Check code Abnormal point and detection method Case Judgment and action Outdoor fan motor Abnormal if the rotational frequency of fan motor is not detected during DC fan motor operation Fan motor rotational frequency is abnor mal if 100 rpm or below detected continuously for 15 seconds at 68 F 20C or more outside air temperature 50 rpm or below or 1500 rpm or more detected continuously for 1 minute Q Failure in the operation of the DC fan motor Failure in the outdoor circuit controller board Check or replace DC fan motor Check the voltage of the outdoor circuit controller board during operation Replace outdoor controller circuit board when the failure is still indicated even after performing the action above Detailed codes To find out the detail history latest about U9 error turn ON SW2 1 2 2 and 2 6 Refer to 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Overvoltage error Increase in DC bus voltage to A12 18 24N 420 V A30 36 42N 400 V Abnormal increase in power source voltage
135. ective thermistor the power off and check if is dis normal Defective outdoor controller played when the power is on again temperature thermistor TH5 exceeds 104 F 40 C during defrosting and dis board When U3 is displayed refer to Judgment and action for U3 charge temperature thermistor TH32 exceeds 230 F 110 C Defective action of linear Check linear expansion valve eS expansion valve Refer to 10 6 HOW TO CHECK THE 2 Abnormal if discharge superheat PARTS and 10 7 HOW TO CHECK THE Cooling TH32 TH5 COMPONENTS Heating TH32 TH6 increases All the conditions in A or B are detected simultaneously for 10 minutes continu ously after 6 minutes past from com pressor start up including the thermo stat indication or recovery from defrost ing U2 lt Condition A gt TH32 1132 Heating mode When discharge superheat is less than 126 F 70 C When the TH6 temp is more than the value obtained by TH7 9 F 5 C When the condensing temp of TH5 is less than 95 F 35 C lt Condition B gt During comp operation Cooling and Heating When discharge superheat is less than 144 F 80 C in cooling When discharge super heat is less than 162 F 90 C in heating When condensing temp of TH6 is more than 40 F 40 In cooling only OCH577A 35 Check code
136. el See Figure 1 Propeller Fan 2 Remove the top panel See Figure 1 r e Fan motor fixing screws motor 3 Remove 5 fan grille fixing screws 5 x 12 to detach the fan grille See Figure 1 4 Remove a nut for right handed screw of M6 to detach the propeller See Photo 1 5 Disconnect the connector CNF1 on controller circuit board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 25 to detach the fan motor See Photo 2 Front panel fixing screws Fan motor fixing screws 3 Removing the electrical parts box Photo 3 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 Controller circuit board 3 Disconnect the indoor outdoor connecting wire from C B terminal block 4 Remove all the following connectors from controller circuit board fan motor linear expansion valve thermistor lt Liquid gt thermistor lt Comp surface thermistor 2 phase pipe thermistor lt Ambient gt high pressure switch 4 way valve and bypass valve Pull out the disconnected wire from the electrical parts box Diagram symbol in the connector housing Fan motor CNF1 Linear expansion valve LEV A Thermistor Liquid TH3 Thermistor Comp surface TH32 Thermistor 2 phase pipe Ambient TH6 7 High pressure switch 63H 4 way valve coil 2154 Bypass valve coil SV2 5 Remove the terminal cover and disconnect the compressor lea
137. el 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 expansion valve coil See Photo 10 8 Recover refrigerant 9 Remove the welded part of linear expansion valve Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed easily by removing the back panel Note 3 When installing the linear expansion valve cover it with a wet cloth to prevent it from heating 250 F or more then braze the pipes so that the inside of pipes are not oxidized Photo 10 4 way valve coil 4 way 4 V fixing screw Linear expansion valve 4 way valve coil 2154 valve coil LEV A 10 Removing the high pressure switch 63H 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 Pull out the lead wire of high pressure switch 8 Recover refrigerant 9 Remove the welded part of high pressure switch Note 1 Recover refrigerant without spreading it in the air Note 2 The welded part can be removed
138. electric parts Precautions during the repair service Do not perform the work involving the electric parts with wet hands Do not pour water into the electric parts Do not touch the refrigerant Do not touch the hot cold areas in the refrigerating cycle When the repair or the inspection of the circuit needs to be done without turning off the power exercise great caution not to touch the live parts 577 2 _____ 2 2 CAUTIONS RELATED 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 following 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 Make sure that the inside and outside of refrige rant piping is clean and it has no contaminants such as sulfur oxides dirt shaving particles etc which are hazard to refrigerant cycle In addition use pipes with specified thickness Use a vacuum pump with a reverse flow check valve Vacuum pump oil may flow back into refrigerant cycle and that can cause deterioration of refrigerant oil etc Use the following tools specifically designed for use with R410A refrigerant The following tools are necessary to use R410A refrigerant Tools
139. equired Sound vibration None Present o Air intake air temperature COOL F HEAT F Air discharge temperature COOL F HEAT F E Refrigerant heat exchanger temperature COOL F HEAT F Filter operating Time 5 o Decorative panel Good Cleaning required ie Filter Good Cleaning required Cleaning required 5 Heat exchanger Good Cleaning required Sound vibration None Present The filter operating time is the time that has elapsed since the filter was reset Judgment Area Check item coo Hest Normal Normal operation state Filter inspection Filter may be clogged Inspection A Performance has dropped Detailed in spection is necessary Inspection B Refrigerant amount is dropping Inspection C Filter or indoor heat exchanger may be clogged Note The above judgment is just guide based on Japanese standard conditions It may be changed depending on the indoor and outdoor temperature t may be judged as filter inspection due to the outdoor and indoor temperature even though it is not clogged OCH577A 93 Check Points 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 activat ing maintenance mode Result Classification
140. er supply EE EM cua Yes No ii prozen em T Se circuit board Yes open Normal Replace the noise filter circuit board and check 52C relay wiring power board and ACTM Circuit diagram 12 V DC from outdoor controller circuit board 52C relay PTC1 PTC2 resistor 198 253 V AC _ SS ETT T 198 253 V AC gt L1 Power circuit board CNDC PNK 31 280 350 V DC H To outdoor controller circuit board CNDC PNK 198 253 V AC CNAC WHT Outdoor controller circuit board OCH577A 58 O _ 10 6 5 Check method of power circuit board PUZ A18 24NHA6 PUY A12 18 24NHA6 C Power circuit board check gt PUZ A18 24NHA6 BS PUY A12 18 24NHA6 BS Note To check the voltage of the parts on this board with a tester is difficult due to its location Test points are limited d Check the breaker and power supply Is the voltage of main incoming power No 198 253 V AC Yes Is the voltage of CNDC PNK on outdoor NO controller circuit board 280 350 DC Yes No Is the voltage to the compressor Check wiring Check power circuit board Check noise filter circuit board Check wiring Check model setting switch SW6
141. es 0 5s 0 5s 2s 4 gt 15 Minute 58 10194 50 to 90 C When the coil thermistor detects 0 F or below and temperature are displayed by turns Example When 10 F 0 5s 0 5s 2s 10 t J Pipe temperature Suction TH33 58 to 194 U9 Error status during the Error Description Detection point Display postponement period Normal 00 Overvoltage error Power circuit board 01 Undervoltage error Controller circuit board 02 Input current sensor error L1 or L2 phase open error Abnormal power synchronous signal Power circuit board 08 Code PFC error A12 18 24NHA display Overvoltage Undervoltage Overcurrent PFC ACTM error Check CNAF wiring Undervoltage Defective ACTM P B Controller circuit board 04 Power circuit board 10 20 Display examples for multiple errors Overvoltage 01 Undervoltage 02 03 Undervoltage 02 Power sync signal error 08 0A L phase open error 04 PFC error 10 14 OCH577A 89 Ee The black square indicates a switch position SW2 setting Display detail Explanation for display Controlling status of compressor The following code will be a help to know the operating frequency operating status of unit The tens digit Compressor operating frequency control Primary current control Secondary current
142. essed OCH577A D Check if you set ON OFF timer The air conditioner stops operating at the time designated if OFF timer has been set before Check if any operations are ordered by distant control system or the central remote controller While CENTRALLY CONTROLLED INDICATOR is displayed on the remote controller the air conditioner is under the control of external directive 52 There might be a case that CENTRALLY CONTROLLED INDICATOR will not be displayed Phone Calls From Customers How to Respond Awhite 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 COOL when pipes or piping joints are cooled they get sweated and water drips down HEAT water drips down from the heat exchanger Note Use optional parts Drain Socket and Drain pan if these water needs to be collected and drained out for once The display of IR wireless remote controller gets dim or does not come on The indoor unit does not receive a signal from remote controller at a long distance OCH577A Batteries are being exhausted Replace them and press the reset button of remote controller 53 s 10 6 HOW TO CHECK THE PARTS PUZ A18 24 30 36 42NHA6 PUZ A18 24 30 36 42NHA6 BS PUY A12 18 24 30 36 42NHA6 PUY A12 18 24 30 36 42NHA6 BS Parts name Check
143. fan motor linear expansion valve thermistor lt Liquid gt thermistor lt 2 phase pipe gt thermistor lt Ambient gt high pressure switch low pressure switch 4 way valve coil Then remove a screw 4 x 8 from the valve bed to remove the lead wire Pull out the disconnected wire from the electrical parts box lt Diagram symbol in the connector housing gt Fan motor CNF1 CNF2 Linear expansion valve LEV A Thermistor lt Liquid gt TH3 Thermistor lt Comp surface gt TH32 Thermistor lt 2 phase pipe Ambient gt TH6 7 Thermistor lt Suction gt TH33 High pressure switch 63H Low pressure switch 63L 4 way valve coil 2154 5 Remove the terminal cover and disconnect the compressor lead wire 6 Remove an electrical parts box fixing screw 4 x 10 and detach the electrical parts box by pulling it upward The electrical parts box is fixed with 2 hooks on the left and 1 hook on the right Photo 3 C B OCH577A 124 Controller circuit board Electrical parts box E Electrical parts box fixing screw Terminal block TB1 Valve bed Compressor MC Screw Terminal cover Cover panel Front Cover panel fixing screws OPERATING PROCEDURE PHOTOS 4 Removing the thermistor lt 2 phase pipe gt TH6 Photo 4 1 Remove the service panel See Figure 1 Electrical 2 phase pips 2 Remove the top panel
144. for R410A Flare tool Size adjustment gauge Vacuum pump adaptor Electronic refrigerant charging scale Gauge manifold Charge hose Gas leak detector Torque wrench Contamination inside refrigerant piping can cause deterio ration of refrigerant oil etc Handle tools with care Store the piping to be used indoors during installation and both ends of the piping sealed until just before brazing Leave elbow joints etc in their packaging If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor If dirt dust or moisture enters into refrigerant cycle that can cause deterioration of refrigerant oil or malfunction of com pressor Do not use a charging cylinder If a charging cylinder is used the composition of refrigera nt will change and the efficiency will be lowered The refrigerant oil applied to flare and flange connections must be ester oil ether oil or alkylbenzene oil in a small amount If large amount of mineral oil enters that can cause deterio ration of refrigerant oil etc Ventilate the room if refrigerant leaks during operation If refrigerant comes into contact with a flame poisonous gases will be released Charge refrigerant from liquid phase of gas cylinder Use the specified refrigerant only If the refrigerant is charged fro
145. ge indicates the latest error record Error history 1 4 Error Unt dd mm yy E 0 1 12 00 08 12 34 6 1 12 04 08 12 34 0 1 12 00 08 12 34 0 1 12 00 08 12 34 Check menu 5 mae J 7 Fl F8 F4 Deleting the error history To delete the error history press the F4 button Delete on the screen that shows error history A confirmation screen will appear asking if you want to delete the error history Cw Press the button OK to delete the history Cw Error history deleted will appear on the screen Press the 5 button to back to the Check menu screen OCH577A 29 Error history Delete error history Error history Error history deleted Check menu O Test run for IR wireless remote controller Measure an impedance between the power supply terminal block on the outdoor unit and ground with a 500 V Megger and check that it is equal to or greater than 1 0 MQ CooL Turn on the main power to the unit hal Press the r button twice continuously ch Start this operation from the turned oft status of remote controller display ON OFF i TEMP E and current operation mode are displayed Gi a Press 005 aoc button to activate cous mode then check whether cool air blows out from the unit Press the 2 oc button to activate mode then 20 FAN
146. he power is turned on 700 pulse closing valve signal will be sent till it goes to point in order to define the valve position The pulse signal is being sent for about 20 seconds 2 Linear expansion valve operation When the valve moves smoothly there is no sound or vibration occurring from the linear expansion valve however when the pulse number moves from to or when the valve is locked Pd sound can be heard than normal situation No sound is heard when the pulse number moves from 6 to in case coil is burn out or motor is locked by open phase Sound can be detected by placing the ear against the screw driv er handle while putting the screw driver to the linear expansion valve Valve position capacity 500 pulse Opening a valve all the way Pulse number Extra tightening about 32 pulse OCH577A 65 3 How to attach and detach the coil of linear expansion valve A12 18 lt Composition gt Linear expansion valve is separable into the main body and the coil as shown in the diagram below Coil fa N Lead wire Stopper Main body lt How to detach the coil gt 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 stress A lt How to attach the coil gt jene Hold the lower part
147. he table on the right 02 12 03 13 04 14 05 15 06 12 16 07 17 08 18 09 18 19 0 1 0b 24 1b DC 1C Od 30 1d 1 36 1F Wireless pair No indoor control board side setting Request code 165 Data display Display Pair No setting state 010 00 No 0 01 No 1 J41 disconnected See the table on the right 02 No 2 J42 disconnected 03 No J41 J42 disconnected OCH577A 113 14 DISASSEMBLY PROCEDURE PUZ A18NHA6 PUZ A18NHA6 BS PUY A12 18NHA6 PUY A12 18NHA6 BS OPERATING PROCEDURE PHOTOS 1 Removing the top panel service panel front panel and Photo 1 back panel asa fk inet 1 Remove the top panel fixing screws 4 x 10 one from the Hu right and two from the left side and detach the top panel 2 Remove 1 service panel fixing screw 4 x 10 and detach the service panel by pulling it downward See Photo 1 charge plug 3 Remove the front panel fixing screws 4 x 10 5 from the front 2 from the right and 2 from the left side and detach the front panel 4 Remove the conduit cover and cord cover fixing screw 2 pcs 4 x 10 and detach the conduit cover and cord cover See Photo 2 Photo 2 lt Service panel Cord cover J Conduit cover and cord cover Ys fixing screws 5 Remove the back panel fixing screws 4 x 10 4 from the right and 3 from th
148. he unit returns to 200 m normal If the same abnormality generates Remote controller line 39 ft again controller of displayed address and 12 m attribute may be defective Extension of transmission wire voltage and signal is caused by type unmatched transmis sion wire With shield wire CVVS CPEVS With normal wire no shield VCTF VCTFK CVV CVS VVR VVF VCT Diameter 1 25 mm AWG16 or more Accidental malfunction of abnormality generated controller 10 5 TROUBLESHOOTING OF PROBLEMS Phenomena Factor Countermeasure 1 Remote controller display does not 12 V DC is not supplied to remote controller Check LED2 on indoor controller board work Power supply display is not indicated on LCD 1 When LED2 is lit 12 15 V DC is supplied to remote controller how Check the remote controller wiring for ever no display is indicated breaking or contact failure PLEASE WAIT is not displayed 2 When LED2 is blinking PLEASE WAIT is displayed Check short circuit of remote controller wiring 3 When LED2 is not lit Refer to phenomena No 3 below Check the following Failure of remote controller if PLEASE WAIT is not displayed Refer to phenomena No 2 below if PLEASE WAIT is displayed 2 PLEASE WAIT display is remained O At longest 2 minutes after the power supply PLEASE Normal operation on the remote controller WAIT is displayed to
149. heck if noise entered into transmission wire of remote controller Check if noise entered into indoor outdoor connecting wire Re check error by turning off power and on again 5 blinking Serial communication error Communication between outdoor controller board and outdoor power board Communication between outdoor controller board and M NET P C board Check if connector CNA on outdoor controller board and outdoor power board is not disconnected GCheck if there is poor connection of connector on outdoor controller board CNMNT and Communication error of M NET System 1 Check code displayed on remote controller 2 Refer to the indoor unit service manual OCH577A GCheck M NET communication signal 80 Indication Outdoor controller board LED1 Green LED2 Red Contents Inspection method 3 blinking 1 blinking Abnormality of shell thermistor TH32 and discharging temperature TH4 Check if stop valves are open Check if connectors TH4 TH32 LEV A on outdoor controller board are not disconnected Check if unit is filled with specified amount of refrigerant Measure resistance values among terminals on indoor valve and outdoor linear expansion valve using a tester 2 blinking Abnormal high pressure High pressure switch 63H operated Check if indoor outdoor units have a short cycle on their air ducts GCheck if conne
150. heck outdoor unit and repair the defect Malfunction of outdoor fan motor Short cycle of outdoor unit Dirt of outdoor heat exchanger 09 Decreased airflow caused by Check the inspected temperature of outside defective inspection of outside temperature thermistor on LED display temperature thermistor SW2 on A Control Service Tool Refer It detects lower temperature to 10 10 FUNCTION OF SWITCHES than actual temperature CONNECTORS AND JUMPERS Disconnection or contact failure W Turn the power off and check F5 is of connector 63H on outdoor displayed when the power is on again controller board When F5 is displayed refer to Judgment Disconnection or contact failure and action for F5 of 63H connection Defective outdoor controller board Defective action of linear Check linear expansion valve expansion valve Refer to 10 6 HOW TO CHECK THE 48 Malfunction of fan driving circuit PARTS and 10 7 HOW TO CHECK THE COMPONENTS 48 Replace outdoor controller board High discharge temperature Overheated compressor Check intake superheat High comp surface temperature tion caused by shortage of Check leakage of refrigerant 1 Abnormal if discharge temperature ther refrigerant Charge additional refrigerant mistor TH32 exceeds 257 125 C Defective operation of stop Check if stop valve is fully open 230 F 110 C continuously for 5 min valve T j Def
151. her than the above are indicated For emergency operation it is necessary to set the emergency operation switch SWE on indoor controller board Refer to the electrical wiring diagram of indoor unit for how to set the indoor unit During emergency operation the air conditioner will continuously be operated by supplying power and stopping it It can not be turned on or off by remote control and temperature control is not possible Do not perform emergency heating operation for an extended period of time If the outdoor unit starts defrosting during this period cold air will blow out from the indoor unit Do not perform emergency cooling operation for more than 10 hours Neglecting this could result in freezing the heat exchanger in indoor unit 3 Emergency operation procedure Turn the main power supply off Q Turn on the emergency operation switch SWE on indoor controller board Set the shorting pins of emergency operation connector CN31 on outdoor controller board to ON Use SW4 2 on outdoor controller board to set the operation mode cooling or heating SW4 1 is not used SW4 CN31 Shorting pins ON Heating ON E O 1 2 Cooling OFF Turning the main power supply on will start the emergency operation 4 Releasing emergency operation Turn the main power supply off SW4 Set the emergency operation switch SWE on indoor controller board to OFF ON Heating Set the sh
152. if an indoor unit other than the Furthermore if F appears and blinks in the unit number display area and the one to which the refrigerant address has been set to perform fan operation refrigerant address display area also blinks there are no units that corre there may be another refrigerant address that is the same as the specified one spond to the selected unit number In this case the refrigerant address and unit In this case check the DIP switch of the outdoor unit to see whether such a number may be incorrect so repeat steps and to set the correct ones refrigerant address exists Select the mode number Press the ft TEMP buttons and A to set the desired mode Mode number number display section Only the selectable mode numbers can be selected e Mode number 02 Indoor temperature detection Select the setting content for the selected mode Press the E TEMP buttons and A to select the desired setting Press the MENU button The currently selected setting number will number blink so check the currently set content Setting number display section Setting number 1 Indoor unit operating average Setting number 3 Remote controller built in sensor Register the settings you have made in steps to The mode number and setting number will stop blinking and remain lit indicating the Press the MODE button The mode number and setting
153. ilized measure operation data as explained below 4 Press the TEMP buttons CA to select the desired refrigerant address 5 Select the type of data to be displayed After selecting go to step 6 Compressor information qp Cumulative _____ gt ON OFF Number gt Operating current Display operation time COMP ON COMP ON COMP ON x10 HOURS x100 TIMES CURRENT A Outdoor unit information ON OFF button Heat exchanger gt Comp discharge gt Outdoor ambient Display temperature temperature temperature OUTDOOR UNIT OUTDOOR UNIT OUTDOOR UNIT H EXC TEMP OUTLET TEMP OUTDOOR TEMP Indoor unit information button Indoor room gt Heat exchanger gt Filter operating temperature temperature time Display INDOOR UNIT INDOOR UNIT INDOOR UNIT INLET TEMP H EXC TEMP FILTER USE H 6 Press the FILTER button to confirm the setting Display example for accumulated operating time NNI a aw Display gt 3 P Se Blinking Waiting for response I I After approx 12 340 hours 10 seconds 7 Data is displayed on the display at To check the data for each item repeat steps 5 to 7 8 To cancel maintenance mode press the TEST button for 3 seconds or press the 1 ON OFF button E Refrigerant address Single refrigerant system Multi refrigerant system group control In the case
154. ing settings or auto recovery feature from power failure make proper changes of settings referring to the description of 12 FUNCTION SETTING Make sure to read operation manual before test run Especially items to secure safety OCH577A 26 10 2 1 Test run for wired remote controller lt PAR 30MAA gt lt PAR 31MAA gt Select Service from the Main menu and press the button Cw Select Test run with the F1 or F2 button and press the button 2 ON OFF MENU RETURN SELECT Function buttons J 1 F2 F3 F4 Service menu 1 2 gt Test run Input maintenance info Function setting Check Self check Main menu 1 F1 F2 5 9 C FA gt 2 Select Test run with the F1 F2 button and press the button Test run menu gt Test run Drain pump test run Service menu 1 j F1 F4 oe Test run operation c Ls Press 1 button to go through the operation modes the order of Cool T 28 buc and Heat E Switch disp a A v Cool mode Check the cold air blows out Ean Heat mode Check the heat blows out Check the operation of the outdoor unit fan EI Fe TT hd eoo e Press the 2 button and open the Vane setting screen Auto vane check Remain 2 88 Check the auto vane with
155. ion Direct the IR wireless remote controller toward the sensor of the indoor unit and press the j button The sensor operation indicator will blink and beeps will be heard to indicate the current setting number Current setting number 1 1 beep one second 2 2 beeps one second each 3 3 beeps one second each Notes 1 If a mode number that cannot be recognized by the unit is entered 3 beeps of 0 4 seconds will be heard Reenter the mode number 2 If the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the mode number Select the setting number Press the TEMP button to select the setting number 02 Not available x Direct the IR wireless remote controller toward the receiver of the indoor unit and press the button The sensor operation indicator will blink and beeps will be heard to indicate the setting number Setting number 1 2 beeps 0 4 seconds each 2 7 2 beeps 0 4 seconds each repeated twice 3 2 beeps 0 4 seconds each repeated 3 times Notes 1 If a setting number that cannot be recognized by the unit is entered the setting will turn back to the original setting 2 If the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the setting number Repeat steps and to make an additional setting without changing unit number Repeat steps to to change unit nu
156. ion gt I 2 a CND Connector lt Power Supply gt F4 55 2 Connector lt M NET communication gt WHT X2 PUZ only r 2 4 ff BLU jus el WHT CNDC N PNK 2 H ole 1 WHT sl 7 Sch mn IPM aler BEI c CT 2 Se hie 2 WHT a m RED E 1 S tz E si TH8 om iae E2 TH Ape 2 wiT d 5 sl CNS t m 3 s iu 2 2 RED I aro 22 15 1 co por y Tra 9 2 WHT GI E ama e WHT 8 5 2 3 m Tipe TABP E p x uz X sa d x m LI NI El uyw Ac RED WHT MODEL SELECT Wis the switch position MODEL Sue PUZ A42NHA6_ H F F 8 PUY A42NHAG AN A A 8 a 3X2 SW5 1 to 4 Function switch 577 19 POWER SUPPLY 208 230V 60Hz copper supply wires Utilisez des fils d alimentation en cuivre 8 WIRING SPECIFICATIONS 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 Outdoor unit power supply Wiring circuit breaker or isolating switch Outdoor unit Ind
157. is defective If the cause of trouble is not in Q above in different refrigerant system 2 or more outdoor units judge with If address of abnormality source is the address that should not exist there is the unit that memorizes nonexistent address information Delete useless address informa tion with manual setting function of remote controller Only the system FRESH MASTER or LOSSNAY are connected to or the system that is equipped with group setting of differ ent refrigerant system If the cause of trouble is not any of above replace the controller board of displayed address or attribute If the unit does not return to normal multi con troller board of outdoor unit may be defective repeater circuit Replace multi controller board one by one to check if the unit returns to normal Continued to the next page From the previous page Check code Abnormal point and detection method Case Judgment and action 4 If displayed address or attribute is remote controller Indoor unit detects abnormality when indoor unit transmitted to remote control ler and there was no reply ACK During group operation with indoor unit of multi refrigerant system if indoor unit transmit to remote controller while out door unit power supply of one refrigerant system is turned off or within 2 minutes of restart abnormality is detected Contact failure of transmission wire of remote controller
158. 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 However this control is also applied to the models which has no electric heater Something is wrong with the airflow direction The airflow direction is changed during COOL operation If the up down is set to downward in COOL operation it will be automatically set to horizontal blow by the microprocessor in order to prevent water from dropping down 1 Hr will be displayed on the remote controller if the up down vane is set to downward with the fan speed set to be less than LOW Q The airflow direction is changed during HEAT operation The airflow direction cannot be set by remote controller In HEAT operation the up down is automatically controlled according to the temperature of the indoor unit s heat exchanger In the following cases written below the up down vane will be set to horizontal blow and the setting cannot be changed by remote controller 1 At the beginning of the HEAT operation 2 While the outdoor unit is being stopped by thermostat or when the outdoor unit gets started to operate 3 During DEFROST operation The airflow direction will be back to the setting of remote controller when the above situations are released STANDBY wi
159. is present Code 3 TH3 Abnormal thermistor display I SE Sensor TH3 TH6 TH7 TH8 8 E number 0 No thermistor error 107 Operation mode at time of error Displayed in the same way as request code 0 108 Compressor Operating current at time of error 0 50 A 109 Compressor Accumulated operating time at time of error 0 9999 10 hours 110 Compressor Number of operation times at time of error 0 9999 100 times 111 Discharge temperature at time of error 37 327 F 112 Outdoor unit Liquid pipe 1 temperature TH3 at time of error 40 194 F 113 Outdoor unit Liquid pipe 2 temperature at time of error 40 194 F 114 Outdoor unit 2 phase pipe temperature TH6 attime oferror 38 194 F 115 116 Outdoor unit Outside air temperature TH7 at time of error 38 194 F 117 Outdoor unit Heatsink temperature TH8 attime of error 40 327 F 118 Discharge super heat SHd at time of error 0 327 F 119 Sub cool SC at time of error 0 234 F 120 Compressor Operating frequency at time of error 0 255 Hz 121 Outdoor unit at time of error 0 10 Step Fan output step Outdoor unit at time of error 122 z 0 9999 rpm Fan 1 speed Only for air conditioners with DC fan 123 Outdoor unit at time of SI 0 9999 i O is displayed if the air conditioner is a single Fan 2 speed Only for air conditioners with DC fan fan type 124 125 LEV A opening at time of error 0 500 Pulses 126 LEV B
160. l remote controllers are set as sub remote controller In this case EO is displayed on remote controller and E4 is displayed at LED LED1 LED2 on the outdoor controller circuit board Miswiring of remote controller Defective transmitting receiving circuit of remote controller Defective transmitting receiving circuit of indoor controller board of refrigerant address 0 8 Noise has entered into the transmission wire of remote controller Check disconnection or looseness of indoor unit or transmission wire of remote controller Set one of the remote controllers main If there is no problem with the action above Check wiring of remote controller Total wiring length max 500 m 1640ft Do not use cable x 3 or more The number of connecting indoor units max 16 units The number of connecting remote control ler max 2 units If the cause of trouble is not in above O Diagnose remote controllers a When RC OK is displayed remote con trollers have no problem Turn the power off and on again to check If abnormality generates again replace indoor controller board b When RC NG is displayed replace remote controller c When RC or ERC 00 66 is dis played noise may be causing abnormality Note If the unit is not normal after replacing indoor controller board in group control indoor controller board of address 0 may be abnormal Remote controller control
161. ll be displayed on the remote controller in case of 1 and 2 DEFROST will be displayed on the screen in case of 3 The airflow direction does not change Up down vane left right louver 1 Check if the vane is set to a fixed position Check if the vane motor connector is removed 2 Check if the air conditioner has a function for switching the air direction 3 If the air conditioner doesn t have that function NOT AVAILABLE will be displayed on the remote controller when AIR DIRECTION or LOUVER button is pressed The air conditioner starts operating even though any buttons on the remote controller are not pressed Check if you set ON OFF timer The air conditioner starts operating at the time designated if ON timer has been set before Check if any operations are ordered by distant control system or the central remote controller While CENTRALLY CONTROLLED INDICATOR is displayed on the remote controller the air conditioner is under the control of external directive There might be a case that CENTRALLY CONTROLLED INDICATOR will not be displayed Check if power is recovered from power failure black out The units will automatically start operating when power is recovered after power failure black out occurs This function is called auto recovery feature from power The air conditioner stops even though any buttons on the remote controller are not pr
162. ller check Start checking Begin V _____ O 10 4 SELF DIAGNOSIS ACTION TABLE lt Abnormalities detected when the power is turned on gt Note Refer to indoor unit section for code P and code E Check code Abnormal point and detection method Case Judgment and action OCH577A No voltage is supplied to terminal block TB1 of outdoor unit al Power supply breaker is turned off b Contact failure or disconnec tion of power supply terminal c Open phase L1 or L2 phase Electric power is not charged to power supply terminal of out door power circuit board a Contact failure of power supply terminal b Open phase on the outdoor power circuit board 12 24 Disconnection of connector R or S A30 A42N Disconnection of connector TABT or TABS Electric power is not supplied to outdoor controller circuit board a Disconnection of connector CNDC Disconnection of reactor DCL or ACL Disconnection of outdoor noise filter circuit board or parts fail ure in outdoor noise filter circuit board As for A30 A42N type it is especially needed to check the resistance RS1 on the noise fil ter circuit board Defective outdoor power circuit board Defective outdoor controller circuit board Check following items a Power supply breaker b Connection of power supply terminal block TB1 c Connection of power supply terminal block TB1 Check following items
163. lt 8 6 gt ug UIN 000 UN lt 9U L1 61 gt Auge Goeds eoiies is ass 7 gie uuo gie gie e 1 al DOEN 28 SE S3 P sjenuew uonejjejsur u AI65 sjejep je nonied jo uoneue dx3 orseq E smous eu L au uwous SS929e 5 10 eoeds jo suoisuawiq SNOILLO3MIG ONIMIM ONIdld 7 51108 NOILWGNNOS 30785 JOIAYAS Z lun eu punouy 39785 3383 LO 577 7 PUZ A18NHA6 PUZ A18NHA6 BS WIRING DIAGRAM PUY A12 18NHA6 PUY A12 18NHA6 BS
164. m gas phase composition change may occur in refrigerant and the efficiency will be lowered Do not use refrigerant other than R410A Never use any refrigerant other than that specified Doing so may cause a burst an explosion or fire when the unit is being used serviced or disposed of Correct refrigerant is specified in the manuals and on the spec labels provided with our products We will not be held responsible for mechanical failure system malfunction unit breakdown or accidents caused by failure to follow the instructions If other refrigerant R22 etc is used chlorine in refrige rant can cause deterioration of refrigerant oil etc OCH577A 3 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 a syphon type Charging should be performed with the cylinder of syphon stood vertically Refrigerant is charged from liquid phase Gravimeter 3 Service tools Use the below service tools as exclusive tools for R410A refrigerant Tool name Specifications Gauge manifold Only
165. mber and make function settings on it Complete the function settings Press button Note Do not use the IR wireless remote controller for 30 seconds after completing the function setting OCH577A 100 12 2 FUNCTION SELECTION OF REMOTE CONTROLLER 12 2 1 PAR 30MAA PAR 31MAA Function buttons F1 F2 F3 F4 D ON OFF button The functions of the function buttons change depending on the screen Refer to the button function guide that appears at the bottom of the LCD for the functions they serve on a given screen When the system is centrally controlled the button function guide that corresponds to the locked button will not appear Main display Main menu 14 38 Fri Main Main menu 1 3 Vane Louver Vent Lossnay High power Room 280 Timer Cool Set temp Auto Weekly timer Function guide 6 ON OFF lamp Press to turn ON OFF the indoor unit 2 SELECT button Press to save the setting 3 RETURN button Press to return to the previous screen 4 MENU button Press to bring up the Main menu 5 Backlit LCD Operation settings will appear When the backlight is off pressing any button turns the backlight on and it will stay lit for a certain period of time depending on the screen When the backlight is off pressing any button turns the backlight on and does not perform its functi
166. mission to out door power circuit board CN4 SV2 Bypass valve A24 30 36 only 2154 4 way PUZ only Connect to the outdoor power circuit board CN2 Reception from power circuit board Zero cross signal 0 5 V DC 9 0 18 V DC 16 V DC 16 V DC I CNAC Power supply for out door controller circuit board 208 230 V AC Q 3 Power supply for indoor and outdoor unit con nection wire 208 230 V AC CNS 51 52 A 208 230 V AC of C5A C5B 0 V when stopped 1 6 5 V DC CNF1 CNF2 CNDC when operated Connect to the fan motor 280 V DC O 280 V DC Outdoor power circuit Communication power supply dd board D71 Voltage _ 15 V 24 V DC 15 V DC When stopped 7 5 V DC When operated 0 15 V pulse CNF2 is only for A42 OCH577A 70 Outdoor noise filter circuit board PUZ A18NHA6 PUZ A18NHA6 BS PUY A12 18NHA6 PUY A12 18NHA6 BS LI NI El Connect to the earth Voltage of 208 230 V AC is input Connect to the terminal block TB1 EI Connect the earth CNAC1 CNAC2 208 230 V AC Connect to the outdoor control ler circuit board CNAC E2 Connect to the earth CN5 Primary current Connect to the outdoor power circuit board CN5 LO NO Voltage of 208 230 V AC is output Connect to the ACL 577 71 CN52C
167. mponent molecules in HFC refrigerant are smaller compared to conventional refrigerants In addition to that R410A is a refrigerant which has higher risk of leakage because its working pressure is higher than that of other refrig erants Therefore to enhance air tightness and strength flare cutting dimension of copper pipe for R410A has been specified separately from the dimensions for other refrigerants as shown below The dimension B of flare nut for R410A also has partly been changed to increase strength as shown below Set copper pipe correctly referring to copper pipe flaring dimensions for R410A below For 1 2 and 5 8 inch pipes the dimension B changes Use torque wrench corresponding to each dimension Dimension A Dimension B Flare cutting dimensions Nominal dimensions in 1 4 3 8 Flare nut dimensions Nominal Outside dimensions in diameter mm 1 4 6 35 3 8 9 52 1 2 12 70 5 8 15 88 3 4 19 05 Dimension B R410A in mm R22 mm 43 64 17 0 17 0 7 8 22 0 22 0 1 3 64 26 0 24 0 1 9 64 29 0 27 0 36 0 Outside diameter mm 6 35 9 52 12 70 5 8 15 88 3 4 19 05 Tools for R410A The following table shows whether conventional tools can be used or not R410A tools Tool exclusive for R410A Tool exclusive for R410A Tool for HFC refrigerant Tool exclusive for R410A Tool exclusive for R410A Ester oil ether oil and alkylbenzene oil minimum amount Tool exclusive for R410A R410A in mm
168. mpressor stops due to the work of protection device Postponement code is displayed while error is being postponed 3 When the display blinks Inspection code is displayed when compressor stops due to the work of protection devices Display Contents to be inspected During operation U1 Abnormal high pressure 63H worked 02 Abnormal high discharge temperature shortage of refrigerant U3 Open short circuit of comp surface thermistor TH32 U4 Open short of outdoor unit thermistors TH3 TH6 TH7 TH8 and TH33 U5 Abnormal temperature of heat sink U6 Abnormality of power module U8 Abnormality in outdoor fan motor Compressor overcurrent interruption When Comp locked Display Inspection unit UH Current sensor error Outdoor unit UL Abnormal low pressure 63L worked UP Compressor overcurrent interruption P1 P8 Abnormality of indoor units A0 A7 Communication error of M NET system Lighting ON ON ON ON ON ON ON ON ON ON ON ON 0 1 2 3 4 5 6 7 8 A Indoor unit 1 Indoor unit 2 Display Contents to be inspected When power is turned on F3 63L connector red is open F5 63H connector yellow is open F9 2 connectors 63H 63L are open E8 In
169. n of inspection for outdoor unit gt 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 Display 1 Normal condition Unit condition Outdoor controller board A Control Service Tool LED1 Green LED2 Red Check code Indication of the display When the power is turned on Lighted Lighted Alternately blinking display When unit stops Lighted Not lighted Operation mode When compressor is warming up Lighted Not lighted When unit operates Lighted 2 Abnormal condition Indication Lighted C5 H7 etc Outdoor controller board LED Green LED2 Red Contents Inspection method Detailed reference page 2 blinking Connector 63H is open Check if connector 63H on the outdoor controller board is not disconnected GCheck continuity of pressure switch 63H by tester P 34 1 blinking Miswiring of indoor outdoor unit conne cting wire excessive number of indoor units 4 units or more Check if indoor outdoor connecting wire is connected correctly Check if 4 or more indoor units are connected to outdoor unit Miswiring of indoor outdoor unit co nnecting wire converse wiring or di sconnection
170. ng or heating operation Yes Is the voltage between 3pin and Yes 4pin of CN2 on outdoor controller circuit board 18 V DC No a Check wiring Normal Replace the outdoor controller circuit board Check 52C relay m Check ACTM TIME CHART ON 208 230 V Power supply OFF ON 52C rela ex 48Hz Hz OHz Hz 290 325 V 330 380 V 290 325 V Bus bar voltage DC ov ON ACTM OFF OFF power on starts stop Outdoor controller circuit board operate 330 350 V DC ise fi ircui stop 290 325 Dc Noise Ter Zei board 198 253 V AC SSS 3 NE LO i IN t 11 circuit 1 198 253 V AC ee NO Sece N 2 208 230 V 10 AC 181 Power board CN2 3 4pi NES RES dal U V 10 250 V AC 5 U W 10 250 V SC a V W 10 250 V AC ACTM EE M Wp 4l D D D u Circuit diagram SS 2 e Sp E sS S gt 15 do G g ISSN I u X SSES IAW SSS 0 XN is NS WS n Ee gt SS SS HR d 8 252 EN I 5 a S ea ee ple OP ne 9 OCH577A operate 330 350 V DC stop 290 325 V DC 61 10 6 8 Check method of DC fan motor fan motorl outdoor controller circuit board Notes High voltage is applied to the connecter CNF1 2 the fan motor Pay attention to the service Do not pull out the connector CNF1 2 for the motor with the power sup
171. ng screws OCH577A 123 s PUZ A42NHA6 BS PUY A42NHA6 BS OPERATING PROCEDURE PHOTOS amp ILLUSTRATION 1 Removing the service panel and top panel 1 Remove 3 service panel fixing screws 5 x 12 and slide the hook on the right downward to remove the service panel 2 Remove screws 3 for front 3 for rear 5 x 12 of the top panel and remove it Figure Grille fixin screws Grille fixin screws 4 Top panel fixing screws a Top panel 2 4 Service panel g g Service panel fixing screws 2 Removing the fan motor MF1 MF2 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 5 fan grille fixing screws 5 x 12 to detach the fan grille See Figure 1 4 Remove a nut for right handed screw of M6 to detach the propeller See Photo 1 5 Disconnect the connectors CNF1 CNF2 on controller circuit board in electrical parts box 6 Remove 4 fan motor fixing screws 5 x 25 to detach the fan motor See Photo 2 Photo Propeller Fan motor fixing screws 1 Front panel Photo 2 Fan motor fixing screws 3 Removing the electrical parts box 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Disconnect the indoor outdoor connecting wire from terminal block 4 Remove all the following connectors from controller circuit board
172. o 3 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screws 5 x 12 in the rear of the unit and then remove the right side panel 8 Recover refrigerant 9 Remove 2 welded pipes of accumulator inlet and outlet 10 Remove 2 accumulator leg fixing screws 4 x 10 Note Recover refrigerant without spreading it in the air Photo 11 ER Accumulator EN usa eg Compressor MC Accumulator leg fixing screws MITSUBISHI ELECTRIC CORPORATION HEAD OFFICE TOKYO BLDG 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Copyright 2015 MITSUBISHI ELECTRIC CORPORATION Distributed in Aug 2015 No OCH577 REVISED EDITION A Distributed in Jan 2015 No OCH577 Made in Japan New publication effective Aug 2015 Specifications are subject to change without notice 128
173. ock for transmission wire of outdoor unit Check if terminal block for transmission wire TB3 and terminal block for central control TB7 are not connected Check transmission waveform or noise on transmission wire Check code Abnormal point and detection method Case Judgment and action 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 Data of transmission proces Sor or unit processor is not transmitted normally because of accidental trouble such as noise or lightning surge Address forwarding from unit processor is not transmitted normally because of defective transmission processor hard ware Turn off the power supply of outdoor unit and indoor unit and FRESH MASTER or LOSSNAY at the same time for 2 minutes or more and turn the power on again System returns to normal if abnormality was accidental malfunc tion If the same abnormality generates again abnormality generated controller may be defec tive AT 6607 NO ACK signal 1 Transmitting side controller detects abnormal if a massage was transmitted but there is no reply ACK that a mes sage was received Transmitting side detects abnormality every 30 seconds 6 times continuously Note The address and attribute displayed
174. of SW2 PAC SK52ST Refer to 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Thermistors of connectors Outdoor controller circuit board TH3 TH6 TH7 TH33 Outdoor power circuit board CN3 Defective thermistor Defective outdoor controller circuit board Name Disconnection or contact failure Check connection of connector TH3 TH6 TH7 TH33 on the outdoor controller circuit board Check connection of connector CN3 on the outdoor power circuit board Check breaking of the lead wire for thermis tor TH3 TH6 TH7 TH8 TH33 Refer to 10 9 TEST POINT DIAGRAM Check resistance value of thermistor TH3 TH6 TH7 TH8 TH33 or check tem perature by microprocessor Thermistor TH3 TH6 TH7 TH8 TH33 Refer to 10 6 HOW TO CHECK THE PARTS SW2 on A Control Service Tool Refer to 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Replace outdoor controller circuit board Note Emergency operation is available in case of abnormalities of TH3 TH6 TH7 and TH33 Refer to 10 8 EMERGENCY OPERATION Open detection Short detection Thermistor Liquid 58 F 50 C or below 194 F 90 C or above Thermistor lt 2 phase pipe gt 58 F 50 C or below 194 F 90 C or above Thermistor lt Ambient gt 58 50 or below 194 F 90 C or above Thermistor lt Heat sink gt 54 F 48 or below 216 F 102 C or above
175. of single refrigerant system the refrigerant address Up to 16 refrigerant systems 16 outdoor units can be con is 00 and no operation is required nected as a group by 1 remote controller To check or set the Simultaneous twin triple units belong to this category refrigerant addresses single refrigerant system 1 1 Twin Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant Refrigerant address address address address address 00 address 00 Outdoor Outdoor 00 01 02 15 Outdoor Outdoor Outdoor Outdoor unit unit unit unit unit unit unit unit e unit Indoor unit Indoor unit Indoor unit Indoor unit 01 01 01 01 Remote controller Remote Remote controller controller 577 92 11 2 GUIDE FOR OPERATION CONDITION 5 Good Retightened amp 9 S Terminal block Outdoor Unit Good Retightened T 8 8 Unit Retightened 2 Insulation resistance MQ Voltage V Com Accumulated operating time Time Number of ON OFF times Times Current A o Refrigerant heat exchanger temperature COOL F HEAT F 8 Refrigerant discharge temperature COOL F HEAT F 5 8 Air outside air temperature COOL F HEAT S 2 Air discharge temperature COOL F HEAT Ka E Appearance Good Cleaning required S S 2 Heat exchanger Good Cleaning r
176. of the main body shown as A firmly so that r x the main body does not move and attach the coil by inserting it i mpl ncm i downward into the main body Then securely attach the coil stop per to pipe B At this time be careful that stress is not added to lead wire and main body is not wound by lead wire If the stop per is not firmly attached to pipe B coil may be detached from the main body and that can cause defective operation of linear expansion valve To prevent piping stress be sure to attach the coil holding the main body of linear expansion valve firmly Otherwise pipe may break A Be sure to attach the stopper to pipe B OCH577A 66 4 How to attach and detach the coil of linear expansion valve A24 30 36 42 lt Composition gt Linear expansion valve is separable into the main body and the coil as shown in the diagram below Stopper Main body Coil e Lead wire lt How to detach the coil gt 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 stress lt How to attach the coil gt Hold the lower part of the main body shown as A firmly so that the main body does not move and attach the coil by inserting it downward into the main body Then securely attach the coil stop per to main body At this time
177. oltage When compressor is running DC bus voltage stays at 310 V or lower for consecutive 10 seconds Incorrect switch settings on the outdoor controller circuit board for model select Defective outdoor power circuit board Defective outdoor controller circuit board Correction of a model select Replace outdoor power circuit board Replace outdoor controller circuit board Compressor overcurrent interruption When compressor locked Abnormal if overcurrent of DC bus or compressor is detected within 30 seconds after compressor starts operating Stop valve is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective compressor Defective outdoor power board amp DIP Switch setting for selecting model is incorrect on the outdoor power circuit board Open stop valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 10 9 TEST POINT DIAGRAM Outdoor power circuit board Check compressor Refer to 10 6 HOW TO CHECK THE PARTS Replace outdoor power circuit board Check that the DIP Switch setting is cor rect on the outdoor power circuit board by referring to Model Select in 1 Function of switches in 10 10 FUNCTION OF SWITCHES CONNECTORS AND JUMPERS Current sensor error It is abnormal for 38A the input current or 10 seconds continuous 34A
178. on except for the ON OFF button OCH577A 101 This lamp lights up in green while the unit is in operation It blinks while the remote controller is starting up or when there is an error Function button Main display Press to change the operation mode Main menu Press to move the cursor down Function button F2 Main display Press to decrease temperature Main menu Press to move the cursor up 9 Function button F3 Main display Press to increase temperature Main menu Press to go to the previous page Function button Main display Press to change the fan speed Main menu Press to go to the next page e Menu structure Press the MENU button Mainmenu Move the cursor to the desired item with the F1 and F2 buttons and press the button Vane Louver Vent Lossnay High power Timer ON OFF timer Auto Off timer Weekly timer Restriction ES Temp range Operation lock Energy saving ima Auto return Schedule Night setback Filter information Error information Maintenance Auto descending panel T Manual vane angle Initial setting Main sub Clock Main display Contrast Display details Auto mode Administrator password Language
179. on circuit in outdoor power circuit board Defective outdoor controller circuit board Replace outdoor power circuit board Replace outdoor controller circuit board Abnormal power synchronous signal No input of power synchronous signal to power circuit board Power synchronous signal of 44 Hz or less or 65 Hz or more is detected on power circuit board Disconnection or loose connection of earth wiring Defective power synchronous signal circuit in outdoor controller circuit board Defective power synchronous signal circuit in outdoor power circuit board Check earth wiring Replace outdoor controller circuit board Replace outdoor power circuit board PFC error Overvoltage Undervoltage Overcurrent A12 24N only PFC detected any of the fol lowing 8 Increase of DC bus voltage to 420 V b Decrease in PFC control voltage to 12 V DC or lower C Increase in input current to 47 A peak OCH577A Distortion of power source voltage noise superimposition Disconnection or loose connection of CN2 on the outdoor power circuit board controller circuit board Defective PFC module of outdoor power circuit board Check the field facility for the power supply Check CN2 wiring Replace outdoor power circuit board 37 Check Code Abnormal point and detection method Case Judgment and action Detailed PFC IGBT error codes Underv
180. on switch SW8 Wiring replace CNM Connect to A control service tool CNMNT Connect to M NET adapter CN5 CNVMNT Connect to M NET adapter CND LEV A Linear expansion a s valve ig 63L Low pressure switch ES Cas o o o o o Rae B Q sus O TH3 Thermistor 5 P Se lt Liquid gt e TH7 6 Ra o BUS dip Ambient 2 phase pipe eL v TH32 Thermistor Comp surface vw TH33 9 4 Thermistor lt Suction gt 63H High pressure switch TEST POINT Voltage between right pins of PC5C and PC5D pin 3 and pin 4 Same as EE Var TEST POINT Voltage between pins Q ee OQ ve 90 iso 3 r 00000000 ome o o We d R54 oN e x52 P o d R51 oo o lo o cst o d o RSS oAfo ol lt sa kO e O R52 Ito R5a Q to o 51 External signal output Compressor operating signal Abnormal signal CNDM O Input of low level sound priority mode Input of external con tact point o L CN52C Connect to the noise filter circuit board CN52C CNA Trans
181. onment refrigerant amount weather when the trouble occurred matters related to wiring etc Reset check code logs and restart the unit after finishing service There is no abnormality concerning of parts such as electrical component controller board remote controller etc The trouble is not reoccurring the abnormal symptom GConduct troubleshooting and ascertain the cause of the trouble according to 10 5 TROUBLESHOOTING OF PROBLEMS Not logged Continue to operate unit for the time being if the cause is not ascertained There is no abnormality concerning of parts such as electrical component controller board remote controller etc 10 2 CHECK POINT UNDER TEST RUN 1 Before test run After installation of indoor and outdoor units piping work and electric wiring work re check that there is no refrigerant leak age loosened connections and incorrect polarity Measure impedance between the ground and the power supply terminal block L1 L2 on the outdoor unit by 500V Megger and check that it is 1 0MQ or over Note Do not use 500V Megger to indoor outdoor connecting wire terminal block 81 S2 S3 and remote controller terminal block 1 2 This may cause malfunction Make sure that test run switch SW4 is set to OFF before turning on power supply Turn on power supply 12 hours before test run in order to protect compressor For specific models which requires higher ceil
182. oor unit outdoor unit connecting cords Remote controller Indoor unit Indoor unit earth Ul lt x PLA A12 18 24 30 PLA A36 42 PCA A24 30 PKA PCA A36 42 Indoor unit power supply _ Minimum circuit ampacity 2 63 2 73 3 30 3 50 A Maximum rating of overcurrent protective device 15A Indoor unit model PEAD A24 30 36 42 PEA A12 18 Outdoor unit model 42 Breaker size 21 15 15 25 30A 30A 30A Outdoor unit power supply Indoor unit Outdoor unit X AWG 16 polar 3 X AWG 16 polar 3 X AWG 16 polar 3 X AWG 16 polar 3 X AWG 16 polar 3 X AWG 16 polar Indoor unit earth Remote controller Indoor unit Outdoor unit L1 L2 208 230 V AC 208 230 V AC 208 230 V AC 208 230 V AC 208 230 V AC 208 230 V AC Indoor unit Outdoor unit 81 92 208 230 V AC 208 230 V AC 208 230 V AC 208 230 V AC 208 230 V AC 208 230 V AC Indoor unit Outdoor unit 52 53 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC 24 V DC Remote controller Indoor unit 4 1 A breaker with at least 3 mm contact separation in each pole shall be provided Use earth leakage breaker NV The breaker shall be provided to ensure disconnection of all active phase conductor of the supply Make sure that the current leakage breaker is one compatible with higher harmonics S1 X9 Wiring Wire No x Always use a current leakage breaker that is compatible with higher harmonics as this unit is equip
183. ooting mode on the IR wireless remote controller s operation area the unit ends function selection mode automatically if nothing is input for 10 minutes or longer Operating instructions D Check the function settings Press the P button twice continuously is lit and 00 blinks Press the TEMP button once to set 50 Direct the IR wireless remote controller toward the receiver of the indoor unit and press the 4 button Set the unit number Press the TEMP 6 button to set the unit number Press 01 to specify the indoor unit whose unit number is 01 Direct the IR wireless remote controller toward the receiver of the indoor unit and press the C button By setting unit number with the m 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 Notes 1 If a unit number that cannot be recognized by the unit is entered 3 beeps of 0 4 seconds will be heard Reenter the unit number setting 2 If the signal was not received by the sensor you will not hear a beep or a double ping sound may be heard Reenter the unit number setting Select a mode Press the TEMP 00 button to set a mode Press 24 to turn the function that raises the set temperature by 4 degrees during heat operat
184. opening at time of error 0 500 Pulses 127 128 129 130 Thermo ON time until operation stops due to error 0 999 Minutes 131 132 Indoor Liquid pipe temperature at time of error 38 180 F Average value of all indoor units is displayed if the air condi tioner consists of two or more indoor units twin triple quad 133 Indoor Cond Eva pipe temperature at time of error 38 190 F Average value of all indoor units is displayed if the air condi tioner consists of two or more indoor units twin triple quad 134 Indoor at time of error 38 190 F Intake air temperature Thermostat judge temperature gt 135 136 137 138 139 140 146 147 148 149 150 Indoor Actual intake air temperature 38 190 151 Indoor Liquid pipe temperature 38 190 F 152 Indoor Cond Eva pipe temperature 38 190 F 577 108 Description Request content Unit Remarks Display range 153 Indoor Fan operating time 154 MOM 0 9999 1 hour After filter is reset Indoor Total ting ti 15 1919 9 Ime 0 9999 10 hours Fan motor ON time 156 157 Indoor fan output value Sj value 0 255 Fan control data _ For indoor fan phase control Indoor fan output value A 158 8 00 indicates fan control data For indoor fan pulsation control Pulsation ON OFF
185. or indoor unit power supplied separate pewer Indoor unit specifications from outdoor unit supplies change the connections of the EC So electrical box connector con Required e Sp connectors as shown nection change mim in the following Label affixed near each wiring diagram i Bg Hove figure A Required sje for the indoor and outdoor units Indoor unit 51 Outdoor unit DIP switch settings when 5 control board using separate indoor unit outdoor unit Connectors power supplies only w8 Indoor unit power supplied from outdoor unit Initial Note setting Doan There are three types of label A B and C Affix the appropriate label to the units according to the wiring method 52 SE 83 P Separate indoor unit outdoor unit power supplies PLA A36 42 PCA A36 42 PLA A12 18 24 30 Indoor unit model PKA PCA A24 30 Indoor unit power supply Single 208 230 V 60 Hz Single 208 230 V 60 Hz PEAD A24 30 36 42 PEA A12 18 Single 208 230 V 60 Hz Single 208 230 V 60 Hz Minimum circuit ampacity 1A 2A 2 63 2 73 3 30 3 50A 1A Maximum rating of overcurrent protective device 15A 15A 15 A 15A Indoor unit power supply 2 x Min AWG16 2x Min AWG16 Indoor unit power supply earth 1 x Min AWG16 1x Min AWG16 Indoor unit Outdoor unit Indoor unit earth 2 x AWG22 polar 2 x AWG22 polar 3x 1 5 polar 1 Min 1
186. or more Defective circuit of current sensor on outdoor power circuit board Decrease of power supply voltage Replace outdoor power circuit board Check the facility of power supply Abnormal low pressure 63L worked Abnormal if 63L is worked under 4 PSIG 70 03 MPa during compressor operation 63L Low pressure switch A42N only Stop valve of outdoor unit is closed during operation Disconnection or loose connec tion of connector 63L on outdoor controller board Disconnection or loose connection of 63L Defective outdoor controller board Leakage or shortage of refrigerant Malfunction of linear expansion valve Check stop valve Turn the power off and on again to check if F3 is displayed on restarting If F3 is displayed follow the F3 processing direction Correct to proper amount of refrigerant Check linear expansion valve Refer to 10 6 HOW TO CHECK THE PARTS Compressor overcurrent interruption Abnormal if overcurrent DC bus or com pressor is detected after compressor starts operating for 30 seconds OCH577A Stop valve of outdoor unit is closed Decrease of power supply voltage Looseness disconnection or converse of compressor wiring connection Defective fan of indoor outdoor units Short cycle of indoor outdoor units Defective input circuit of outdoor controller board Defective compressor 38 Open stop
187. orm function selection The unit area number changes to 00 01 02 03 04 and AL each time a button is pressed Unit dun n DU h e DO OU p display section fq dii To set modes 01 to 06 or 15 to 22 select unit number 00 When the refrigerant address and unit number are confirmed by pressing the To set modes 07 to 14 or 23 to 28 carry out as follows em T set each indoor unit individually select 01 to 04 button the corresponding indoor unit will start fan operation This To set all the indoor units collectively select AL helps you find the location ofthe indoorunitforwhich you wantto perform function selection However if 00 is selected as the unit number all indoor Confirm the refrigerant address and unit number units corresponding to the specified refrigerant address will start fan operation Press the button to confirm the refrigerant address and unit number Example When the refrigerant address is set to 00 and the unit number is 02 After a while will start to blink in the mode number display area 00 refri refrigerant address uU Outdoor unit Hees pol 88 DA ETH Indoor unit Unit number 01 Unit number 02 Designate operation Remote controller Fan draft 88 will blink in the room temperature display area if the selected refrigerant address does not exist in the system When grouping different refrigerant systems
188. orting pins of emergency operation connector CN31 on outdoor controller PUZ only board to OFF Set SW4 2 on outdoor controller board as shown in the right 1 2 Cooling Note If shorting pins are not set on emergency operation connector CN31 the setting remains OFF 577 68 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 Operation mode COOL HEAT Remarks Intake temperature TH1 81 F 27 69 F 20 5C Indoor fluid pipe temperature TH2 41 F 5C 113 F 45C Indoor 2 phase pipe temperature TH5 41 F 5C 122 F 50 C Set temperature 77 F 25C 72 F 22 C Outdoor liquid pipe temperature TH3 113 F 45 C 41 F 5C Outdoor 2 phase pipe temperature TH6 122 F 50 C 41 F 5C Outdoor air temperature TH7 95 F 35C 45 F 7C Outdoor suction TH33 41 F 5C 41 F 5C Temperature difference code intake temperature set temperature ATj 5 5 Discharge super heat SHd 54 F 30 C 54 F 30 C Sub cool SC 9 F 5C 9 5C 1 If the thermistor temperature data is normal not open short that data is loaded into the control as valid data When the unit enters emergenc
189. outdoor unit connecting wire Total wiring length 262 ft 80 m including wiring connecting each indoor unit and between indoor and outdoor unit Also check if the connection order of flat cable is S1 S2 S3 Check the number of indoor units that are connected to one outdoor unit If EA is detected Turn the power off once and on again to check Replace outdoor controller circuit board indoor controller board or indoor power board if abnormality occurs again Check if refrigerant addresses SW1 3 to SW1 6 on outdoor controller circuit board are overlapping in case of group control system Check transmission path and remove the cause Note The descriptions above 0 8 are for EA Eb and EC lt Abnormalities detected while unit is operating gt Check code Abnormal point and detection method Case Judgment and action High pressure High pressure switch Short cycle of indoor unit Check indoor unit and repair the defect 63H operated Clogged filter of indoor unit Abnormal if high pressure switch 63H Decreased airflow caused by worked during compressor operation dirt of indoor fan 602 PSIG 4 15 MPa Dirt of indoor heat exchanger Locked indoor fan motor 63H High pressure switch Malfunction of indoor fan motor Defective operation of stop Check if stop valve is fully open valve Not full open Clogged or broken pipe Check piping and repair the defect Locked outdoor fan motor C
190. outdoor unit is stopped refrigerant collection is not properly performed Open the liquid stop valve completely and then repeat step after three minutes have passed H the refrigerant collecting operation has been completed normally LED1 off LED2 lit the unit will remain stopped until the power supply is turned off Turn off the power supply circuit breaker Note that when the extension piping is very long with large refrigerant amount it may not be possible to perform a pump down operation AN Warning When pumping down the refrigerant stop the compressor before disconnecting the refrigerant pipes The compressor may burst if air etc get into it 2 Refrigerant pipe airtight testing method 1 Connect the testing tools Make sure the stop valves 9 are closed and do not open them Add pressure to the refrigerant lines through the service port of the liquid stop valve O 2 Do not add pressure to the specified pressure all at once add pressure little by little Pressurize to 0 5 MPa 5 kgf cm G wait 5 minutes and make sure the pressure does not decrease Pressurize to 1 5 MPa 15 kgf cm G wait 5 minutes and make sure the pressure does not decrease Pressurize to 4 15 MPa 41 5 kgf cm G and measure the surrounding temperature and refrigerant pressure 3 If the specified pressure holds for about one day and does not decrease the pipes have passed the test and there are no leaks If the surrounding temper
191. oving the indoor power board CN2S Defective indoor Replace the indoor controller board controller board 12 to 16 V DC Miswiring breaking Check if there is miswiring or poor connection of or breaking of wire No indoor outdoor connecting wire Defective indoor Replace the indoor power board power board 577 47 Symptoms Nothing is displayed on the remote controller Diagnosis flow LED display of the indoor controller board LED e LED2 LEDS O or e Inspection method and troubleshooting Check the voltage between S1 and S2 on the terminal block TB4 of the indoor unit 198 to 253 V AC ES Check the status Not lighting of the indoor controller gt board LED3 display Check the looseness or disconnection of the indoor outdoor connecting wire Blinking Are there looseness or disconnection of the indoor gutdoor connecting wire Check the refrigerant address of the outdoor unit SW1 3 to 1 6 Is the refrigeran address 0 Check the LED display of the outdoor unit after turning on the main power again Not displayed Is anything displayed Displayed Is EA or Eb NO displayed Is E8 displayed Can the unit be restarted Check the voltage between S2 and S3 on the terminal block of the outdoo
192. ped with an inverter 210 53 210 The use of an inadequate breaker can cause the incorrect operation of inverter 2 Maximum 147 ft 45 m If AWG13 is used maximum 164 ft 50 m If AWG13 is used and S3 is separated maximum 262 ft BO m 3 The 30 ft 10 m wire is attached in the remote controller accessory Maximum 1500 ft 4 The figures are NOT always against the ground S3 terminal has 24 V DC against S2 terminal However between S3 and S1 these terminals are NOT electrically insulated by the transformer or other device Caution Be sure to install N Line Without N Line it could cause damage to the unit Notes 1 Wiring size must comply with the applicable local and national code 2 Use copper supply wires 3 Use wires rated 600 V or more for the power supply cables and the indoor outdoor unit connecting cables 4 Install an earth longer than other cables 230 V Single phase Isolator 3 poles isolator S1 S1 A Control 2 i 52 A Control Outdoor Unit Indoor Unit 53 53 In case of A control wiring there is high voltage potential on the 53 terminal caused by electrical circuit design that has no electrical insulation between power line and communication signal line Therefore please turn off the main power supply when servicing And do not touch the S1 S2 S3 terminals when the power is energized If isolator should be used between indoor unit and outdoor unit please u
193. planation for display Pipe temperature Liquid TH3 on error occurring 58 to 194 58 to 194 50 to 90 C When the coil thermistor detects 0 F or below and temperature are displayed by turns Example When 15 F 0 5s 0 5 25 gt 15 Comp surface temperature 2 error occurring 37 to 327 37 to 327 3 to 164 C When the temperature is 100 F or more the hundreds digit tens digit and ones digit are displayed by turns Example When 130 F 0 5s 0 5s 2s 1 gt 30 H Compressor operating current on error occurring 0 to 50 Error history 1 latest Alternate display of abnormal unit number and code When no error history 0 and are displayed by turns Code display Error history 2 Alternate display of error unit number and code When no error history 0 and are displayed by turns Code display Thermostat ON time 0 to 999 0 to 999 When it is 100 minutes or more the hundreds digit tens digit and ones digit are displayed by turns Example When 245 minutes 0 55 0 5 25 2 gt 45 gt Test run elapsed time 0 to 120 577 0 to 120 When it is 100 minutes or more the hundreds digit tens digit and ones
194. play overheat prevention overheat prevention protection control overheat prevention Frequency control state 0 Frequency control state 1 Controlled 2 Controlled Frequency control state 3 Controlled Controlled 4 Controlled Display limit control 5 Controlled Controlled 0 No current limit __ 6 Controlled Controlled Primary current a control E T Controlled Controlled Controlled 2 Secondary current limit control is ON 8 Controlled 9 Controlled Controlled A Controlled Controlled b Controlled Controlled Controlled C Controlled Controlled d Controlled Controlled Controlled E Controlled Controlled Controlled F Controlled Controlled Controlled Controlled 577 110 Ooo Fan control state Request code 53 Data display g ol sk x 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 0 0 1 1 2 2 Actuator output state Request code 54 Data display g 0 sk x Actuator output state Actuator output state
195. ply on It causes trouble of the outdoor controller circuit board and fan motor amp Self check Symptom The outdoor fan cannot rotate Fuse check Check F5 on outdoor controller board Did the F5 open V Wiring contact check Contact of fan motor connector CNF1 2 Y Is there contact failure Yes gt the outdoor controller circuit board C B and fan motor MF 1 2 Power supply check Remove the connector CNF1 2 Measure the voltage in the outdoor controller circuit board TEST POINT Voc between 1 and 4 of the fan connector Voc 280 340 V DC When ACTM stops 350 V DC When ACTM is operating TEST POINT Vcc between 5 and 4 of the fan connector 15 V DC Y Is the voltage normal V Replace the outdoor controller circuit board OK Yes gt Replace the fan motor D Check the operation gt Replace the fan motor D y Yes OK Check the operation of fan END Replace the outdoor controller circuit board TESTS POINT V TESTS POINT Vsp FAN MOTOR MF1 Motor Inverter driver K gt rotation signal JUL Outdoor controller circuit board
196. r 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 can not be set within 4 minutes after power on because of miswiring converse wiring or disconnection of indoor outdoor unit con necting wire Contact failure or miswiring of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity Defective transmitting receiving circuit of outdoor controller circuit board Defective transmitting receiving circuit of indoor controller board Defective indoor power board 2 or more outdoor units have refrigerant address O In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire Start up time over The unit cannot finish start up process within 4 minutes after power on OCH577A Contact failure of indoor outdoor unit connecting wire Diameter or length of indoor outdoor unit connecting wire is out of specified capacity 2 or more outdoor units have refrigerant address 0 In case of group control Noise has entered into power supply or indoor outdoor unit connecting wire 34 Check disconnection or looseness or polarity of indoor outdoor unit connecting wire of indoor and outdoor units Check diameter and length of indoor
197. r unit 17 to 28 V DC E YES 577 48 Breaking contact of the indoor outdoor connecting wire Normal Only the unit which has the refrigerant address 0 supplies power to the remote controller Defective outdoor controller circuit board Defective outdoor controller circuit board Defective indoor controller board Influence of electromagnetic noise Defective outdoor power circuit board Defective indoor power board Fix the breaking or poor contact of the indoor outdoor connecting wire Set the refrigerant address to 0 In case of the multiple grouping system recheck the refrigerant address again Replace the outdoor controller circuit board Replace the outdoor controller circuit board Replace the indoor controller board of the indoor unit which does not operate Not abnormal There may be the influence of electromagnetic noise Check the transmission wire and get rid of the causes Replace the outdoor power circuit board Replace the indoor power board Symptoms Nothing is displayed on the remote controller Diagnosis flow LED display of the indoor controller board LED1 e LED2 4 or e LED3 Inspection method and troubleshooting Check the voltage of the terminal block TB6 of the remote controller YES 10 to 16 V DC
198. rd Standard Vane No 2 setting Less draft Be careful of the smudge on ceiling PEAD AA Function Filter sign External static pressure Mode No Wired remote controller RF thermistor Settings 100h Upward position than the standard Initial setting Factory setting 2500h No filter sign indicator 35 50 70 100 125Pa Refer to the right table Refer to the right table Set temperature in heating mode 4 deg up Fan speed during the heating thermo OFF Fan speed during the cooling thermo OFF Available Not available Extra low Stop Set fan speed Set fan speed Stop Detection of abnormality of the pipe temperature P8 Available Not available OCH577A Less draft External static pressure Setting No Upward position than the standard Initial setting Factory setting 35Pa 12 1 1 Selecting functions using the wired remote controller lt PAR 30MAA gt lt PAR 31MAA gt lt Service menu gt Maintenance password is required QD Select Service from the Main menu and press the button At the main display the menu button and select Service to make the maintenance setting Main Main menu Maintenance Initial setting Service 3 3 Main display Cursor 4 Page 2 When the Service menu is
199. re hundreds digit tens digit and ones digit are displayed by turns Sub cool SC 32 to 266 Cooling TH6 TH3 Heating TH5 TH2 32 to 266 0 to 130 C When the temperature is 100 F or more hundreds digit tens digit and ones digit are displayed by turns lt From 18U unit No onward gt Number of defrost cycles 0 to FFFE 0 to FFFE in hexadecimal notation When more than FF in hex 255 in decimal the number is displayed in order of 1675 and 1625 and 16 5 and 16 s places Example When 5000 cycles 0 5s 0 5s 2s 9 gt 4 1 2 cycles Input current of outdoor unit 0 to 500 When it is 100 or more hundreds digit tens digit and ones digit are displayed by turns Targeted operation frequency 0 to 255 0 to 255 When it is 100 Hz or more hundreds digit tens digit and ones digit are displayed by turns DC bus voltage 180 to 370 577 180 to 370 When it is 100V more hundreds digit tens digit and ones digit are displayed by turns 86 EE The black square m indicates a switch position SW2 setting Display detail Explanation for display Capacity save 0 to 100 When air conditioner is connected to M NE T and capacity save mode is demanded a value from 0 to 100 is displayed When there is no setting of capacity save 100
200. remote controller OCH577A Normal operation For protection of compressor 45 Normal operation Symptoms PLEASE WAIT is kept being displayed on the remote controller Inspection method and Diagnosis flow troubleshooting Check the display time of PLEASE WAIT after turning on the main power 6 minutes 2 minutes or more ow long is PLEASE WAIT or less PLEASE WAIT kept being displayed on the emote controller Normal will be displayed The start up diagnosis will during the start up be over in around 2 minutes 2106 diagnosis after turning minutes on the main power re any check codes displayed on the emote controller Check the LED display of the outdoor controller circuit board re any check codes YES displayed on the LED Miswiring of indoor Refer to Self diagnosis outdoor connecting action table in order to wire solve the trouble Breaking of indoor outdoor connecting In case of communication wire S3 errors the display of Defective indoor remote controller may not controller board match the LED display of Defective outdoor the outdoor unit controller circuit board Defective indoor controller board Defective remote controller OCH577A 46 LED display of the indoor controller board LED1 0 LED2 0 LED3 o Symptoms Nothing is displayed on the remote controller Di i
201. s fl Inspection method and lagnosis Tow troubleshooting Check the voltage between S1 and S2 on the terminal block TB4 of the indoor unit NO 198 to 253 V AC Check the voltage among L1 and L2 on the terminal block TB1 of the outdoor power circuit board 198 to 253 V AC NO e Troubles concerning Check the power wiring power supply to the outdoor unit Check the breaker YES Check the voltage between S1 and S2 on the terminal block TB1 of the outdoor unit which is used to connect the indoor unit and the outdoor unit 198 to 253 V AC NO Bad wiring of the Check the wiring of the outdoor controller outdoor unit board Check if the wiring is bad YES The fuses on the Check if the fuses are blown Check the voltage of indoor outdoor The fuses on the outdoor controller board CN2D controller circuit controller circuit board will board are blown be blown when the indoor outdoor connecting wire short circuits Bad wiring of the Check if miswiring breaking outdoor controller or poor contact is causing this board problem Indoor outdoor The fuses on the connecting wire is polarized outdoor 3 core type Connect the NO controller circuit indoor unit and the outdoor board are blown unit by wiring each pair of 1 S2 and S3 on the both side of indoor outdoor terminal blocks Check the voltage of the unit after rem
202. se 3 pole type 577 20 8 2 SEPARATE INDOOR UNIT OUTDOOR UNIT POWER SUPPLIES The following illustrations show available connection patterns The outdoor unit power supply patterns vary on models 1 1 System The optional indoor power supply terminal kit is required Outdoor unit power supply Wiring circuit breaker or isolating switch Outdoor unit 9 Indoor unit outdoor unit connecting cords Remote controller Indoor unit Indoor unit power supply Option Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units Simultaneous twin system GC WN XO e A Outdoor unit power supply Wiring circuit breaker or isolating switch Outdoor unit Indoor unit outdoor unit connecting cords Remote controller Indoor unit Indoor unit power supply Option Indoor unit earth Affix a label B that is included with the manuals near each wiring diagram for the indoor and outdoor units f the indoor and outdoor units have separate power supplies refer to the table below Change the indoor unit electrical box wiring referring to the figure in the right and If the indoor and the DIP switch settings of the outdoor unit control board Connectors connections when outdoorunitshava shipped from the factory are f
203. selected a window will appear asking for the pass word To enter the current maintenance password 4 numerical digits move the cursor to the digit you want to change with the F1 or 22 button Cw Set each number 0 through 9 with the F3 or F4 button Cw Then press the 2 button Note The initial maintenance password is 9999 Change the default password as necessary to prevent unauthorized access Have the password available for those who need it If you forget your maintenance password you can initialize the password to the default password 9999 by pressing and holding the and buttons simultaneously for three seconds on the maintenance password setting screen Service menu Enter maintenance password 999 Select V 999 If the password matches the Service menu will appear The type of menu that appears depends on the connected indoor units type Note Air conditioning units may need to be stopped to make certain set tings There may be some settings that cannot be made when the system is centrally controlled Cw A screen will appear that indicates the setting has been saved Navigating through the screens To go back to the Main menu button To return to the previous 5 5 button 577 97 Service menu 1 2 gt Test run Input maintenance info Function setting Check Self
204. selection Service Test run Input maintenance info Function setting Check Self check Maintenance password mnn Remote controller check Not all functions are available on all models of indoor units OCH577A 102 Main menu list Setting and display items Setting details Vane Louver Vent Lossnay Use to set the vane angle Select a desired vane setting from five different settings Use to turn ON OFF the louver Select a desired setting from ON and OFF Use to set the amount of ventilation Select a desired setting from Off Low and High High power Use to reach the comfortable room temperature quickly Units can be operated in the High power mode for up to 30 minutes Timer ON OFF timer Use to set the operation ON OFF times Time can be set in 5 minute increments Auto Off timer Use to set the Auto Off time Time can be set to a value from 30 to 240 in 10 minute increments Weekly timer Use to set the weekly operation ON OFF times Up to 8 operation patterns can be set for each day Not valid when the ON OFF timer is enabled Restriction Temp range Use to restrict the preset temperature range Different temperature ranges can be set for different operation modes Operation lock Use to lock selected functions The locked functions cannot be operated Energy saving Auto
205. splay of execution of replace wash operation 0000 Not washed 0001 Washed 90 Outdoor unit Microprocessor version information Examples Ver 5 01 0501 Ver 91 Outdoor unit Microprocessor version information sub No Auxiliary information displayed after version information Examples Ver 5 01 A000 000 92 93 94 95 96 97 98 99 100 Outdoor unit Error postponement history 1 latest Displays postponement code is displayed if no postponement code is present Code 101 Outdoor unit Error postponement history 2 previous Displays postponement code is displayed if no postponement code is present Code 102 Outdoor unit Error postponement history 3 last but one Displays postponement code is displayed if no postponement code is present Code 577 107 Request code Description Request content Unit Remarks Display range 103 Error history 1 latest Displays error history is displayed fno history is present Code 104 Error history 2 second to last Displays errorhistory is displayedifno history is present Code 105 Error history 3 third to last Displays errorhistory is displayedifno history
206. ss cannot be specified by the IR wireless remote controller Flow of function selection procedure The flow of the function selection procedure is shown below This example shows how to turn off the function that raises the set temperature by 4 degrees during HEAT operation The procedure is given after the flow chart Check the function selection setting Switch to function selection mode Troubleshooting mode is the mode entered when Enter address 50 in troubleshooting you press the CHECK button twice to display mode then press the HOUR button CHECK ONOFF TEMP F Specify unit No 01 since the function applies to unit 01 Set address 01 while still in troubleshooting mode then press the MINUTE button YES EE Note You Em specify the refrigerant address ng AUTO STOP it No 6 0 Select mode No 24 function that raises set temperature by 4 degrees during HEAT operation No NU MODE VANE AUTOSTART Set address 24 while still in troubleshooting mode then press the HOUR button 10 1 CHECK LOUVER Select setting No 02 OFF Set address 02 while still in troubleshooting mode then press the HOUR button TEST RUN min woe um Finished NO YES End function selection mode Note When you switch to function selection mode End troublesh
207. t sink gt C B Controller Circuit Board CNVMNT Connector TH32 Thermistor lt Comp Surface gt SW1 Switch lt Manual Defrost Defect History lt Connected to Optional M NET Adapter Board gt TH33 Thermistor lt Suction gt Record Reset Refrigerant Address CNDM Connector Connection for Option LEV A Linear Expansion Valve SW4 Switch lt Test Operation gt CN51 Connector lt Connection for Option gt ACL Reactor SW5 Switch lt Model Select Function Switch gt 51 52 55 Relay CY1 CY2 Capacitor SW6 Switch lt Model Select gt Power Circuit Board SW7 Switch lt Function Switch gt ABR S Connection Terminal lt L1 L2 Phase gt SW8 Switch lt Function Switch gt When M NET adapter is connected 63H LEVA B TH33 TH32 TH7 TH6 TH3 A t 1 55 E 6999 ALII mi Lu 7 WHT 13 12 1 4 12 1 6 13 1 5 eB LESE ES TH33 TH32 TH7 6 TH3 LEV A CNVMNT CNMINT aS Em Em YLW BLK RED WHT WHT WHT WHT St i ze ei SP MEC 1 3 1 5 UV Em 63H WHT zi m eso m 3 weit d E 8E ME E L TRAN 12 GES CNDC 2 zeh en 8i RED RED RED ui WHT rr o WHT WHT SS Cu wb M NET ADAPTER _ SYMBOL 2 TB7 8 Bh CNS T os CND 2 ge CN2M 2 FT TABR i RED TABV Eu I Tass WHT TABW 3 og 2 CN2 t WHT GL M CB1 gess H3 x1 MODEL SELECT H is the switch position
208. tdoor controller circuit board Connect A Control service tool PAC SG50ST Refer to EA EC item if LED displays EA AC Check disconnecting or looseness of indoor outdoor unit connecting wire of indoor unit or outdoor unit Check all the units in case of twin indoor unit System Turn the power off and on again to check If abnormality generates again replace indoor controller board or outdoor controller circuit board Turn the power off and detach fan motor from con nector CNF1 2 Then turn the power on again If abnormality is not displayed replace fan motor If abnormality is displayed replace outdoor controller circuit board Check RS1 on outdoor noise filter board with tester If open is detected replace the board Note Other indoor controller board may have defect in case of twin indoor unit system Check code Abnormal point and detection method Case Judgment and action Indoor outdoor unit communication error Signal receiving error Outdoor unit 1 Abnormal if outdoor controller circuit board could not receive anything nor mally for 3 minutes Contact failure of indoor out door unit connecting wire Defective communication circuit of outdoor controller circuit board Defective communication circuit of indoor controller board Noise has entered into indoor outdoor unit connecting wire Check disconnection or looseness of indoor outdoor unit connecting wir
209. ted with only one indoor unit The address changes to a separate setting Diagnose remote controller a When RC OK is displayed remote controllers have no problem Turn the power off and on again to check When becoming abnormal again replace indoor controller board b When RC NG is displayed replace remote controller c When RC ERC 00 66 5 displayed noise may be causing abnormality Indoor outdoor unit communication error Signal receiving error Abnormal if indoor controller board could not receive any signal normally for 6 minutes after turning the power on Abnormal if indoor controller board could not receive any signal normally for 3 minutes Consider the unit as abnormal under the following condition When 2 or more indoor units are connected to an out door unit indoor controller board could not receive a signal for 3 minutes from outdoor controller circuit board a signal which allows outdoor controller circuit board to transmit signals OCH577A Contact failure short circuit or miswiring converse wiring of indoor outdoor unit connecting wire Defective transmitting receiv ing circuit of outdoor controller circuit board Defective transmitting receiving circuit of indoor controller board D Noise has entered into indoor outdoor unit connecting wire Defective fan motor Defective rush current resistor 39 Note Check LED display on ou
210. tion 5 blinking Abnormality of indoor con troller board Replace indoor controller board Abnormality of remote con troller board 1 Check code displayed on remote controller 2 Refer to the indoor unit service manual OCH577A OReplace remote controller 81 lt Outdoor unit operation monitor function gt When option 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 check code by controlling DIP SW2 on A Control Service Tool Operation indicator 5 2 Indicator change of self diagnosis The black square indicates a switch position SW2 setting Display detail Explanation for display ON 123456 Digital indicator LED1 working details Be sure that 1 to 6 in the SW2 are set to OFF 1 Display when the power supply ON When the power supply ON blinking displays by turns Ten Wait for 4 minutes at the longest j 2 When the display lights Normal operation D Operation mode display LED1 EU sy Initial setting C CO The tens digit Operation mode gt The ones digit Relay output Display Operation Model Warming up Compressor Compressor 4 way valve Solenoid valve OFF FAN COOLING DRY HEATING DEFROSTING Display during error postponement Postponement code is displayed when co
211. tion operating But this is not a problem with product because the check valve itself generates the sound because Cooling Heating pressure difference is small in the refrigerant circuit PUZ only Note The operation mode cannot be changed by SW4 2 during test run To change test run mode stop the unit by SW4 1 change the operation mode and restart the test run by SW4 1 OCH577A 25 10 TROUBLESHOOTING 10 1 TROUBLESHOOTING Check code displayed by self diagnosis and actions to be taken for service summary Present and past check codes are logged and they can be displayed on the wired remote controller and control board of out door unit Actions to be taken for service which depends on whether or not the trouble is reoccurring in the field are rized in the table below Check the contents below before investigating details Unit conditions at service Check code Actions to be taken for service summary Displaved Judge what is wrong and take a corrective action according EES to 10 4 SELF DIAGNOSIS ACTION TABLE The trouble is reoccurring Conduct trouble shooting and ascertain the cause of the Not displayed trouble according to 10 5 TROUBLESHOOTING OF PROBLEMS Consider the temporary defects such as the work of protection devices in the refrigerant circuit including compressor poor connection of wiring noise etc Re check the symptom and check the installation envir
212. tion input Function setting Make the settings for the indoor unit functions via the remote controller as necessary Check Error history Display the error history and execute delete error history Refrigerant leak check Refrigerant leaks can be judged Smooth maintenance The indoor and outdoor maintenance data can be displayed Request code Details of the operation data including each thermistor temperature and error history can be checked Self check Error history of each unit can be checked via the remote controller Maintenance password Use to change the maintenance password Remote controller check When the remote controller does not work properly use the remote controller checking function to trouble shoot the problem Clock setting is required OCH577A 103 F 12 3 Function selection of IR wireless remote controller TEMPERATURE DISPLAY CIE SETTING Change of temp mode from F to C D Press the set button with something sharp at the end MODEL SELECT blinks AUTO START Press the gt button F blinks Press the button C blinks Press the set button with something sharp at the end MODEL SELECT is lighted for 3 seconds then turned off CHECK RUN Qo FAN ul 58 58 S HEAT NOTAVAILABL
213. tor M NET communication 7 to 6 A NK 2 DS2_ TABS WHT I V IPM ds AUN AES 1 RED EE 8 SE P 2 m EA 2WHT rr a STE 1 CNS 2 2 RED 1 CN4 Log a 2 WHT Loc S OTABN 218 18 E L opp u Ys L H NI 37 MC DCL 4 E k eran 8 I cov 4 feel Lu L2 T SS S bes oe Q gt D RED P P T L1 L2 GR S2 53 1 BLK O N28 WHT lo i ACTM 3 4 MODEL SELECT INDOOR H is the switch position e UNIT MODEL Sw6 SW5 5 6 X2 POWER SUPPLY puz asonHas o isla i P 2 dHHHa M 208 230V 60Hz Gees Gees Use copper supply wires ON ON z e PP Pd 2 IECIT m A Utilisez des fils d alimentation en cuivre puv asonas e Bimma il 2 6588 T2345678 123355 o PA im im n ac HHS 12345878 123458 3 2 SW5 1 to 4 Function switch OCH577A 18 PUZ A42NHA6 PUZ A42NHA6 BS _ 42 PUY A42NHA6 BS LEGEND SYMBOL NAME SYMBOL NAME SYMBOL NAME TB1 Terminal Block Power Supply Indoor Outdoor gt P B Power Circuit Board SW4 Switch lt Test Operation gt MC Motor for Compressor TABU V W_ Connection Terminal lt U V W Phase gt SW5 Switch Model Select Function Switch MF1 MF2 Fan Motor TABS T Connection Terminal lt L1 L2 Phase gt SW6 Switch lt Model Select gt 2184 Solenoid Valve Four Way Valve TABP1 P2 P Connection
214. valve Check facility of power supply Correct the wiring U V W phase to compressor Refer to 10 9 TEST POINT DIAGRAM Outdoor power circuit board Check indoor outdoor fan Solve short cycle Replace outdoor controller circuit board Check compressor Refer to 10 6 HOW TO CHECK THE PARTS Note Before the replacement of the outdoor controller circuit board disconnect the wiring to compressor from the outdoor power circuit board and check the output voltage among phases U V W during test run No defect on board if voltage among phases U V V W and W U is same Make sure to perform the voltage check with same performing frequency Check code Abnormal point and detection method Case Judgment and action Remote controller transmission error E0 signal receiving error E4 Abnormal if main or sub remote control ler cannot receive normally any trans mission from indoor unit of refrigerant address 0 for 3 minutes Check code E0 Abnormal if sub remote controller could not receive for any signal for 2 minutes Check code E0 Abnormal if indoor controller board cannot receive any data normally from remote controller board or from other indoor controller board for 3 minutes Check code E4 Indoor controller board cannot receive any signal from remote controller for 2 minutes Check code E4 Contact failure at transmission wire of remote controller Al
215. ving the reactor ACL A24 Photo 12 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 reactor fixing screws 4 x 16 and remove the reactor Note The reactor is attached to the rear of the electrical parts box Reactor fixing screw Reactor ACL E A H Reactor fixing screws Electrical parts box OCH577A 122 OPERATING PROCEDURE PHOTOS 14 Removing the reactor DCL A30 36 Photo 13 Reactor fixing screws 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 x 10 and remove the reactor Note The reactor is attached to the rear of the electrical parts box Reactor fixing screws Electrical parts box 15 Removing the compressor MC Photo 14 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 x 12 and remove the front cover panel See Figure 1 4 Remove 2 back cover panel fixing screws 5 x 12 and remove the back cover panel 5 Remove the electrical parts box See Photo 3 6 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 7 Remove 3 right side panel fixing screws 5 x 12 in the
216. white TH32 black UHR and TH33 yellow on the controller circuit board in the MI electrical parts box 3 Loosen the clamp for the lead wire in the rear of the electrical parts box See Photo 4 4 Pull out the thermistor Liquid TH3 thermistor Comp surface TH32 and thermistor lt Suction gt TH33 from the sensor holder Thermistor Comp surface 1 TH32 Thermistor lt Suction gt TH33 Compressor MC OCH577A 125 OPERATING PROCEDURE PHOTOS 7 Removing the 4 way valve coil 2154 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 valve coil 3 Remove 4 way valve coil fixing screw M4 x 6 4 Remove the 4 way valve coil by sliding the coil toward you 5 Disconnect the connector 2154 green on the controller circuit board in the electrical parts box Removing the linear expansion valve coil 3 Remove the linear expansion valve coil by sliding the coil upward 4 Disconnect the connectors LEV A white on the controller circuit board in the electrical parts box Linear expansion valve coil LEV A 8 Removing the 4 way valve 1 Remove the service panel See Figure 1 2 Remove the top panel See Figure 1 3 Remove 3 valve bed fixing screws 4 x 10 4 ball valve and stop valve fixing screws 5 x 16 then remove the valve bed 4 Remove 4 right side
217. y operation and TH values are mismatched set the thermistors to open short And the unit runs emergency operation with the values listed above 2 If one thermistor is set to open short the values of SHd SC will be different from the list above Example When liquid temperature thermistor TH3 has an open or short circuit Thermistor COOL HEAT TH3 113 F 45 C 41 F 5C Ta Tb TH6 Regard normal figure as effective data Tc Td Regard normal figure as effective data 41 F 5C 122 F 50 C 41 F 5C 113 F 45 C Regard normal figure as effective data Discharge superheat SHd Cooling THA TH6 Tc Ta Heating THA TH5 Td 122 F 50 C Degree of subcooling SC Cooling TH6 TH3 113 45 C Heating TH5 TH2 50 C 45 C 5 C or 122 F 113 F 9 F 577 69 10 9 TEST POINT DIAGRAM Outdoor controller circuit board PUZ A18 24 30 36 42NHA6 PUY A12 18 24 30 36 42NHA6 SW7 Demand control setting SW6 CAUTION TEST POINTO is high voltage PUZ A18 24 30 36 42NHA6 BS PUY A12 18 24 30 36 42NHA6 BS SW1 Manual defrost detect history record reset refrigerant address IAS E Model select Test operation IN beth les ed Cem est operation wer sess aa Ci m n iet E LD TIP IH Pump down tevd SW5 Dech Functi

Download Pdf Manuals

Related Search

Related Contents

  Lenovo ThinkPad T440p + 40A10065EU  Kat. Nr. 60.2528  LS-80 Système d`éclairage portable      CORTADORA DE CONCRETO  comment se séparer à moindre frais / mode d`emploi /      

Copyright © All rights reserved. Failed to retrieve file