Fujitsu ABHG54KRTA Service Manual Download Page 119

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7-5. Fresh air control

The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as below.

Operation

Stop

Operation

Stop

Fan motor
(Indoor unit)

Fan motor
(for Fresh Air)

7-6. Compressor preheating

By preheating the compressor, warm airflow is quickly discharged when the operation is started.

•

Triggering condition 1

– Outdoor temperature ≤ 20°C

When outdoor temperature reaches 26°C, compressor preheating stops.

– 30 minutes after compressor stopped

•

Triggering condition 2

0°C

Off

2°C

Tn: Outdoor unit heat exchanger temp.

7-7. External electrical heater control

The external electrical heater is operated as below.

When the room
temperature rises

When the room
temperature drops

Ts: Setting temperature

Heater : Off

Heater : On

Heater : Off

Ts -10

Ts -1

Ts -3

Ts -12

NOTES:

• When the compressor stop, external electric heater is off.
• It operates only in heating mode and when the indoor fan operates. (However, S-LOW is exclud-

ed.)

7-5. Fresh air control

- (04-21) -

7. Various control

CONTROL AND

FUNCTIONS

CONTROL AND

FUNCTIONS

Summary of Contents for ABHG54KRTA

Page 1: ...AIR CONDITIONER Ceiling type SERVICE MANUAL INDOOR ABHG54KRTA OUTDOOR AOHG54KRTA SR_AB007EG_03 2020 11 16 ...

Page 2: ...please check with our authorized dealer Trademarks FGLair is trademark of Fujitsu General Limited in the United States other countries or both Google Play is trademark of Google Inc App Store is a service mark of Apple Inc registered in the U S and other countries Copyright 2020 Fujitsu General Limited All rights reserved ...

Page 3: ...CONTENTS 1 GENERAL INFORMATION 2 TECHNICAL DATA AND PARTS LIST 3 TROUBLESHOOTING 4 CONTROL AND FUNCTIONS 5 FILED WORKING ...

Page 4: ......

Page 5: ...1 GENERAL INFORMATION 2020 04 16 SR_CH01_AB007EG_01 ...

Page 6: ...CONTENTS 1 GENERAL INFORMATION 1 Specifications 01 1 1 1 Indoor unit 01 1 1 2 Outdoor unit 01 2 2 Dimensions 01 3 2 1 Indoor unit 01 3 2 2 Outdoor unit 01 5 ...

Page 7: ...r of Munsell N9 25 Dimensions H W D Net mm 235 1 700 705 Gross 330 1 785 825 Weight Net kg 38 Gross 48 Connection pipe Size Liquid mm in Ø9 52 Ø3 8 Gas Ø15 88 Ø5 8 Method Flare Drain hose Material PVC Tip diameter mm Ø25 I D Ø32 O D Operation range Cooling C 18 to 32 RH 80 or less Heating C 16 to 30 Remote controller Option Wired remote controller Wireless remote controller Mobile app 3 FGLair NOT...

Page 8: ... of Munsell 10YR 7 5 1 0 Dimensions H W D Net mm 998 940 320 Gross 1 176 1 027 445 Weight Net kg 67 Gross 77 Connection pipe Size Liquid mm in Ø 9 52 3 8 Gas Ø 15 88 5 8 Method Flare Pre charge length m 30 Max length 50 Max height difference 30 Operation range Cooling C 15 to 46 Heating 15 to 24 Drain hose Material LDPE Tip diameter mm Ø 13 0 I D Ø 16 0 to Ø 16 7 O D NOTES Specifications are based...

Page 9: ...it Top view Indoor unit Dimensions Space required for inﬆallation The length of the bolt here is 30 mm 75 10 175 290 75 49 84 55 110 1 543 1 700 705 206 179 115 41 125 103 349 119 145 181 98 313 89 235 100 125 91 80 140 290 178 ø100 mm hole 89 110 2 1 Indoor unit 01 3 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 10: ...ore 200 or more 0 or more Obﬆruction Floor Indoor unit Required ceiling height varies according to the ceiling mode setting of function setting No 20 Ceiling height m Ceiling mode Standard High ceiling 54 model 3 5 4 3 2 1 Indoor unit 01 4 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 11: ...8 53 9 Liquid 40 320 354 8 62 9 Gas 12 9 297 2 Gas valve Liquid valve Ф28 Cable port 1 1 8 29 Pipe port 23 4 129 1 85 3 50 29 Pipe port A 95 89 A 3 Way valve Liquid 3 Way valve Gas 320 139 8 96 40 5 Ф28 Cable port 120 Pipe port 55 25 50 B B 50 25 141 9 70 67 Pipe port 264 6 351 9 47 6 15 2 62 6 15 6 2 2 Outdoor unit 01 5 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 12: ...2 2 Outdoor unit 01 6 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 13: ...2 TECHNICAL DATA AND PARTS LIST 2020 11 16 SR_CH02_AB007EG_02 ...

Page 14: ... 4 3 1 Model AOHG54KRTA 02 4 4 Accessories 02 8 4 1 Indoor unit 02 8 4 2 Outdoor unit 02 8 5 Optional parts 02 9 5 1 Indoor unit 02 9 6 Refrigerant system diagrams 02 12 6 1 Model AOHG54KRTA 02 12 7 Wiring diagrams 02 13 7 1 Indoor unit 02 13 7 2 Outdoor unit 02 14 8 PC board diagrams 02 15 8 1 Model ABHG54KRTA 02 15 8 2 Model AOHG54KRTA 02 16 ...

Page 15: ...rs working in the local area shall be instructed on the nature of work being carried out Work in confined spaces shall be avoided The area around the workspace shall be sectioned off Ensure that the conditions within the area have been made safe by control of flammable ma terial Electric shock may occur After turning off the power always wait 5 minutes before touching electrical components Do not ...

Page 16: ...G54KRTA Chassis 11 17 16 15 9 13 14 20 21 18 24 25 19 23 22 26 10 8 7 7 5 6 4 4 4 4 6 5 29 28 27 12 30 31 3 10 10 10 6 6 1 2 1 2 2 1 Model ABHG54KRTA 02 2 2 Indoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 17: ...144003 Flap assy 4 fan 15 9384324009 Hose sub assy 16 9383384004 L and R louver 17 9383385001 Base Louver 18 9900896027 Terminal 5P 19 9711524065 Main PCB 20 9384312006 Box Gear sub assy 21 9900960049 Thermistor Room 22 9710661037 Power supply PCB 23 9710019005 2 way remote PCB 24 9306489045 Terminal 3P 25 9707457056 Reactor assy 26 9384320001 Side panel R sub assy 27 9900892029 Thermistor Pipe 28...

Page 18: ... Model AOHG54KRTA Exterior parts and chassis 15 6 9 12 7 2 1 8 16 22 17 18 14 13 25 26 19 23 24 a b 11 10 4 5 3 3 20 21 3 1 Model AOHG54KRTA 02 4 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 19: ...Main PCB Service for 54 model 13 313166024302 Drain cap 14 9303029015 Drain assy 15 9350255009 Base assy Service 16 9383876011 Service panel sub assy 17 9383878008 Front pipe cover 18 9372171059 Emblem rear 19 9383863011 Front panel assy 20 9383604003 Blow grille 21 9383689000 Blow grille insulation 22 9383882012 Left panel sub assy 23 9383336003 Propeller fan 24 9603733018 Brushless motor 25 9383...

Page 20: ... Compressor 58 57 53 60 63 59 b 50 52 A c A 61 51 55 a 54 56 B B 62 3 1 Model AOHG54KRTA 02 6 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 21: ...48000 Accumulator assy Service 57 9970209000 Expansion valve coil 58 9370947311 Expansion valve assy 59 9379079013 3 way valve assy 60 9377958037 3 way valve assy 61 9900985028 Thermistor Compressor 62 9379179089 Rubber washer F 63 9383851131 Compressor unit a Thermistor spring b Joint pipe D c Wiring fixation unit 3 1 Model AOHG54KRTA 02 7 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST T...

Page 22: ...Cable tie small 1 M10 nut B with spring lock washer 4 Remote controller cable hole cap 1 Washer 8 Tapping screw White 6 Coupler heat insulation large 1 Casing guard 1 Coupler heat insulation small 1 Tapping screw 3 4 2 Outdoor unit Model AOHG54KRTA Part name Exterior Q ty Part name Exterior Q ty Installation manual 1 Drain cap 3 Drain pipe 1 One touch bush 2 4 1 Indoor unit 02 8 4 Accessories TECH...

Page 23: ...the built in thermo sensor Wire type Non polar 2 wire Simple remote controller UTY RSRG Compact remote controller concentrates on the basic functions such as Start Stop fan control temperature setting and operation mode Wire type Non polar 2 wire Simple remote controller UTY RHRG Compact remote controller concentrates on the basic functions such as Start Stop fan control and temperature setting Wi...

Page 24: ...xternal input and output PCB box UTZ GXEA For installing the External input and output PCB Wireless LAN adapter UTY TFSXZ1 Remotely manage an air conditioning system using mobile devices such as smartphones and tablets For connection indoor unit with UART interface Modbus converter UTY VMSX For connection between indoor unit with UART interface and a Modbus open network KNX converter UTY VKSX For ...

Page 25: ... switch controller UTY TERX Air conditioner switching can be controlled by connecting other external sensor switches NOTE Combined use of following optional parts and Wireless LAN adapter UTY TFSXZ1 is not allowed External input and output PCB UTY XCSX Modbus converter KNX converter 5 1 Indoor unit 02 11 5 Optional parts TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 26: ...I ThO ThHO ThC Thermistor Compressor temperature Thermistor Discharge temperature Thermistor Outdoor temperature Thermistor Heat Exchanger Out temperature ThD ThO ThHO Thermistor Room temperature Thermistor Pipe temperature ThR ThPI Pressure sensor 3 Way valve Thermistor Heat Exchanger Med temperature ThHM ThHM 6 1 Model AOHG54KRTA 02 12 6 Refrigerant system diagrams TECHNICAL DATA AND PARTS LIST ...

Page 27: ...7 Wiring diagrams 7 1 Indoor unit Model ABHG54KRTA 7 1 Indoor unit 02 13 7 Wiring diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 28: ...7 2 Outdoor unit Model AOHG54KRTA 7 2 Outdoor unit 02 14 7 Wiring diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 29: ...8 72 9 72 10 72 11 73 1 73 2 73 3 73 4 73 5 73 6 73 7 73 8 73 9 73 10 73 11 73 12 55 1 55 2 55 3 55 4 55 5 55 6 55 7 55 8 55 9 55 10 54 1 54 2 54 3 54 4 263 1 263 2 263 3 263 4 263 5 263 6 263 7 263 8 263 9 263 10 262 1 262 2 262 3 262 4 46 1 46 2 46 3 14 1 14 2 14 3 32 1 32 2 32 3 9 1 9 2 9 3 8 1 8 2 11 1 11 2 11 3 11 4 11 5 67 1 67 2 67 3 67 4 67 5 48 1 48 2 48 3 48 4 48 5 48 6 48 7 48 8 48 9 1 ...

Page 30: ...OIL 1 THERMISTOR COM TEMP THERMISTOR PIPE MID TEMP THERMISTOR PIPE OUT TEMP THERMISTOR OUTDOOR TEMP THERMISTOR DISCHARGE TEMP THERMISTOR HEATSINK TEMP HIGH PRESSURE SWITCH COMPRESSOR DC FAN MOTOR 1 FM HP SW1 CM 4WV EEV 1 PRES SENSOR HI TERMINAL F102 10A AC250V F100 30A AC500V F101 30A AC500V F104 10A AC250V 1 2 3 L1 L2 L3 N INDOOR UNIT 1P2W AC230V 50Hz POWER SOURCE 3P4W AC400V 50Hz MAIN PCB 36 mod...

Page 31: ...3 TROUBLESHOOTING 2020 07 29 SR_CH03_AB007EG_01 ...

Page 32: ...or unit 03 19 2 15 E 62 Outdoor unit main PCB error Outdoor unit 03 20 2 16 E 63 Inverter error Outdoor unit 03 21 2 17 E 64 PFC circuit error Outdoor unit 03 22 2 18 E 65 Trip terminal L error Outdoor unit 03 23 2 19 E 71 Discharge thermistor error Outdoor unit 03 24 2 20 E 72 Compressor thermistor error Outdoor unit 03 25 2 21 E 73 Heat exchanger Middle Outlet temperature thermistor error Outdoo...

Page 33: ...r compressor 03 50 4 3 Outdoor unit Electronic Expansion Valve EEV 03 51 4 4 Indoor unit fan motor 03 53 4 5 Outdoor unit fan motor 03 54 4 6 Pressure switch 03 55 4 7 4 way valve coil solenoid coil 4 way valve 03 56 5 Thermistor resistance values 03 57 5 1 Indoor unit 03 57 5 2 Outdoor unit 03 58 CONTENTS continued ...

Page 34: ......

Page 35: ...at exchanger sensor error Indoor unit 42 E 51 Indoor unit fan motor error Indoor unit 51 E 53 Drain pump error Indoor unit 53 E 62 Outdoor unit main PCB error Outdoor unit 62 E 63 Inverter error Outdoor unit 63 E 64 PFC circuit error Outdoor unit 64 E 65 Trip terminal L error Outdoor unit 65 E 71 Discharge thermistor error Outdoor unit 71 E 72 Compressor thermistor error Outdoor unit 72 E 73 Heat ...

Page 36: ...rror Indoor unit 2 5 15 E 42 Indoor unit heat exchanger sensor error Indoor unit 2 5 15 E 51 Indoor unit fan motor error Indoor unit 2 5 15 E 62 Outdoor unit main PCB error Outdoor unit 2 6 2 E 63 Inverter error Outdoor unit 2 6 3 E 65 Trip terminal L error Outdoor unit 2 6 5 E 71 Discharge thermistor error Outdoor unit 2 7 1 E 72 Compressor thermistor error Outdoor unit 2 7 2 E 73 Heat exchanger ...

Page 37: ... 9 7 E 99 4 way valve error Outdoor unit 2 9 9 E A1 Discharge temperature error Outdoor unit 2 10 1 E A3 Compressor temperature error Outdoor unit 2 10 3 E AC Heat sink temperature error Outdoor unit 2 10 12 Light on Light off n n Times blinking 1 2 Error code table Outdoor unit 03 3 1 Error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 38: ...1 Reset the power and operate Does error indication show again If no go to Check point 1 2 Check point 2 Check connection Check any loose or removed connection line of indoor unit and outdoor unit Check connection condition is control unit If there is loose connector open cable or mis wiring If there is an abnormal condition correct it by referring to the installation manual or the DESIGN TECHNICA...

Page 39: ...49 If outdoor fan motor is abnormal replace outdoor unit fan motor and main PCB If the checked parts are normal replace the main PCB End Check point 1 2 Check external cause such as noise Check the complete insulation of the grounding Check if there is any equipment that causes harmonic wave near the power cable Neon light bulb or any electronic equipment which causes harmonic wave End 2 1 E 11 Se...

Page 40: ...eck point 2 Check connection Check any loose or removed connection line of indoor unit and outdoor unit Check connection condition is control unit If there is loose connector open cable or mis wiring If there is an abnormal condition correct it by referring to the installation manual or the DESIGN TECHNICAL MANUAL Check point 3 Check the voltage of power supply Check the voltage of power supply Ch...

Page 41: ...t is abnormal replace main PCB End Check point 1 2 Check external cause such as noise Check the complete insulation of the grounding Check if there is any equipment that causes harmonic wave near the power cable Neon light bulb or any electronic equipment which causes harmonic wave End 2 2 E 11 Serial communication error Serial forward transfer error Indoor unit 03 7 2 Troubleshooting with error c...

Page 42: ...DC 12 V remote controller is failure Main PCB is normal Replace remote control If it is DC 0 V main PCB is failure Check remote controller once again Replace main PCB Check voltage at CN14 of main PCB terminal 1 3 terminal 1 2 Power supply to the remote controller Upon correcting the removed connec tor or mis wiring reset the power End Check Point 2 Wire installation wrong remote controller group ...

Page 43: ... the rotation of fan Rotate the fan by hand when the operation is off Check if fan is caught drop off or locked motor If fan or bearing is abnormal replace it Check point 2 Check ambient temperature around the motor Check excessively high temperature around the motor If there is any surrounding equipment that causes heat Upon the temperature coming down restart operation Check point 3 Check indoor...

Page 44: ...orrect Main PCB failure Check point 1 Check the total capacity of indoor units Check the total capacity of the indoor units If abnormal condition is found correct it referring to the installation manual or DESIGN TECH NICAL MANUAL Check point 2 Replace main PCB If check point 1 does not improve the symptom change main PCB End 2 5 E 22 Indoor unit capacity error Indoor unit 03 10 2 Troubleshooting ...

Page 45: ... point 1 Check the type of indoor unit Check the type of the connected indoor unit If there is an abnormal condition correct it by refer to the installation manual or the DESIGN TECHNICAL MANAL Check point 2 Replace main PCB If check point 1 do not improve the symptom replace main PCB of the outdoor unit End 2 6 E 23 Combination error Outdoor unit 03 11 2 Troubleshooting with error code TROUBLESHO...

Page 46: ...eck point 3 Replace main PCB Change main PCB End Check point 1 2 Check external cause such as noise Check if the ground connection is proper Check if there is any equipment that causes harmonic wave near the power cable Neon light bulb or any electronic equipment which causes harmonic wave End NOTE EEPROM EEPROM Electronically Erasable and Programmable Read Only Memory is a non volatile memory whi...

Page 47: ...ing is abnormal replace it Check point 2 Check ambient temperature around the motor Check excessively high temperature around the motor If there is any surrounding equipment that causes heat Upon the temperature coming down restart operation Check point 3 Check indoor unit fan motor Check indoor unit fan motor Refer to indoor unit fan motor in Service parts information on page 03 49 If indoor unit...

Page 48: ...e Controller PCB and indicator PCB failure Check point 1 Check the MANUAL AUTO but ton If MANUAL AUTO button is disabled on off switching replace it Check if MANUAL AUTO button is kept pressed Check On Off switching operation by using a meter Check point 2 Replace main PCB and indicator PCB If Check Point 1 does not improve the symptom change main PCB and indicator PCB End 2 9 E 35 MANUAL AUTO but...

Page 49: ...f there is a defective contact or leak current in the power sup ply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check point 2 Check connection of Connector Check if connector is removed Check erroneous connection Check if cable is open Upon correcting t...

Page 50: ...onnector or incorrect wiring Check point 2 Remove connector and check thermistor resistance value For the room thermistor resistance value refer to Thermistor resistance values on page 03 57 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure circuit diagram of each indoor unit and check terminal voltage at thermis tor DC 5 0 V N...

Page 51: ...to removed connector or incorrect wiring Check point 2 Remove connector and check thermistor resistance value For the heat exchanger thermistor resistance value refer to Thermistor resis tance values on page 03 57 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure circuit diagram of each indoor unit and check terminal voltage at...

Page 52: ...an is caught dropped off or locked motor If fan or bearing is abnormal replace it Check point 2 Check ambient temperature around motor Check excessively high temperature around the motor If there is any surrounding equipment that causes heat Upon the temperature coming down restart operation Check point 3 Check indoor unit fan motor Check Indoor unit fan motor Refer to indoor unit fan motor in Ser...

Page 53: ...oint 2 Check connector and wire Check loose contact of CN9 and shorted wire pinched wire Replace float switch if the wire is abnormal Check point 3 Check drain hose Check drain hose If there is hose clogging Please clear the clog Check point 4 Check voltage of power supply and drain pump Check drain pump If drain pump is not run on the working condition check the voltage of the CN71 on the main PC...

Page 54: ...k point 1 Reset power supply and operate If no go to Check point 1 2 Does error indication show again Check point 2 Replace main PCB Change main PCB End Check point 1 2 Check external cause Check if temporary voltage drop was not generated Check if momentary open was not generat ed Check if ground is connection correctly or there are no related cables near the power line End 2 15 E 62 Outdoor unit...

Page 55: ... point 1 2 Error displayed again Check point 2 Check the wiring power supply to inverter PCB Connector and wiring connection state check Cable open check Check point 3 Replace inverter PCB Replace inverter PCB End Check point 1 2 Check external cause Check if temporary voltage drop was not generated Check if momentary open was not generated Check if ground is connection correctly or there are no r...

Page 56: ...us in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power sup ply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check point 2 Check connection of Connector Check if connector is removed Check erroneo...

Page 57: ...tdoor unit Main PCB When the signal from FO terminal of IPM is L 0 V during the compressor stopping Forecast of cause Main PCB failure Check point 1 Check main PCB Replace the outdoor unit main PCB End 2 18 E 65 Trip terminal L error Outdoor unit 03 23 2 Troubleshooting with error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 58: ...einstalling due to removed connector or incorrect wiring Check point 2 Remove connector and check thermistor resistance value For the discharge temperature thermistor resistance value refer to Thermistor resistance values on page 03 57 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure circuit diagram of outdoor unit and check t...

Page 59: ... reinstalling due to removed connector or incorrect wiring Check point 2 Remove connector and check thermistor resistance value For the compressor thermistor resistance value refer to Thermistor resistance values on page 03 57 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure circuit diagram of outdoor unit and check terminal v...

Page 60: ...onnection state check Cable open check Check Point 2 Check the thermistor For the outdoor unit heat exchanger thermistor resistance value refer to Ther mistor resistance values on page 03 57 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC 5 0 V NOTE F...

Page 61: ...lling due to removed connector or incorrect wiring Check point 2 Remove connector and check thermistor resistance value For the outdoor temperature thermistor resistance value refer to Thermistor re sistance values on page 03 57 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure circuit diagram of outdoor unit and check terminal...

Page 62: ...ct wiring Check point 2 Remove connector and check thermistor resistance value For the outdoor temperature thermistor resistance value refer to Thermistor re sistance values on page 03 57 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of inverter PCB Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC 5 0 V NOTE ...

Page 63: ...or or mis wiring reset the power Check if the terminal connection is loose Check if connector is removed Check erroneous connection Check if cable is open Check point 3 Replace main PCB If Check point 1 2 do not improve the symptom change main PCB End Check point 1 2 Check external cause at Indoor and Outdoor Voltage drop or Noise Instant drop Check if there is a large load electric apparatus in t...

Page 64: ...nnector and wiring connection state Check if cable is open Reset power when reinstalling due to removed connector or incorrect wiring Check point 2 Check the high pressure switch characteristics Check switch characteristics For the characteristics of the high pressure switch refer to below Check point 3 Replace main PCB Change main PCB and check operation again End Type of contact C H Pressure Cha...

Page 65: ...ble is open Upon correcting the removed connector or mis wiring reset the power Check point 2 Check output voltage of main PCB Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor DC 5 0 V 5 NOTE For details of thermistor connector refer to Wiring diagrams in Chapter 2 TECHNICAL DATA AND PARTS LIST on page 02 13 If the voltage is not correct replace main PCB Check poi...

Page 66: ...or failure lock winding short Inverter PCB Check point 1 Check the outdoor unit fan operation heat exchanger ambient temperature No obstructions in air passages Heat exchange fins clogged Outdoor unit fan motor check Ambient temperature not raised by the effect of other heat sources Discharged air not sucked in Check point 2 Replace inverter PCB If Check point 1 do not improve the symptom change i...

Page 67: ...an abnormal noise show replace compres sor Check point 2 Check connection of around the compressor components For compressor terminal main PCB Check if connector is removed Check erroneous connection Check if cable is open Refer to inverter compressor in Service parts information on page 03 49 Upon correcting the removed connector or mis wiring reset the power Check point 3 Replace main PCB If Che...

Page 68: ...lace it Check point 2 Check ambient temperature around motor Check excessively high temperature around the motor If there is any surrounding equipment that causes heat Upon the temperature coming down restart operation Check point 3 Check outdoor unit fan motor Check outdoor unit fan motor Refer to outdoor unit fan motor in Service parts information on page 03 49 If outdoor unit fan motor is abnor...

Page 69: ...e thermistor 4 way valve Forecast of cause Connector connection failure Thermistor failure Coil failure 4 way valve failure Main PCB failure Check point 1 Check connection of connector Check if connector is removed Check erroneous connection Check if thermistor cable is open Upon correcting the removed connector or mis wiring reset the power Check point 2 Check each thermistor Isn t it fallen off ...

Page 70: ...Ω If it is open or abnormal resistance value replace solenoid coil 4 way valve Check each piping temperature and the location of the valve by the temperature difference If the value location is not proper replace 4 way valve Check point 4 Replace main PCB If Check Point 1 to 4 do not improve the symptom replace main PCB End 2 30 E 99 4 way valve error Outdoor unit 03 36 2 Troubleshooting with erro...

Page 71: ...valve For heating operation check liquid side of the 3 way valve Check point 2 Check the electronic expansion valve EEV and strainer Check if EEV open Refer to outdoor unit Electronic Expansion Valve EEV in Service parts information on page 03 49 Check the strainer clogging Check point 3 Check the outdoor unit fan and heat exchanger Check for foreign object at heat exchanger Check if fan can be ro...

Page 72: ...the refrigerant leakage Check point 6 Replace main PCB If check point 1 to 5 do not improve the symptom replace the main PCB End 2 31 E A1 Discharge temperature error Outdoor unit 03 38 2 Troubleshooting with error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 73: ...valve For heating operation check liquid side of the 3 way valve Check point 2 Check the electronic expansion valve EEV and strainer Check if EEV open Refer to outdoor unit Electronic Expansion Valve EEV in Service parts information on page 03 49 Check the strainer clogging Check point 3 Check the outdoor unit fan and heat exchanger Check for foreign object at heat exchanger Check if fan can be ro...

Page 74: ...he refrigerant leakage Check point 6 Replace main PCB If check point 1 to 5 do not improve the symptom replace the main PCB End 2 32 E A3 Compressor temperature error Outdoor unit 03 40 2 Troubleshooting with error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 75: ...te Heat sink foreign matter soiling check Check point 2 Check the foreign matter and ambient temperature of heat exchanger Heat exchange foreign matter check Ambient temperature not raised by effect of other heat sources Discharged air not sucked in Check point 3 Check the heat sink temperature thermistor The heat sink temperature thermistor characteristics check Check by disconnecting thermistor ...

Page 76: ...er sup ply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check point 3 Check electrical components Check the voltage of power supply Check if AC 198 to 264 V appears at outdoor unit terminal L N If no go to Check point 1 and Check point 2 Check fuse in fi...

Page 77: ...fective contact or leak current in the power sup ply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check point 3 Check electrical components Check the voltage of power supply Check if AC 198 to 264 V appears at outdoor unit terminal L N If no go to Check ...

Page 78: ... Check if there is a large load electric apparatus in the same circuit Momentary power failure Check if there is a defective contact or leak current in the power sup ply circuit Noise Check if there is any equipment causing harmonic wave near electric line Neon bulb or electric equipment that may cause harmonic wave Check the complete insulation of grounding Check point 3 Check wired remote contro...

Page 79: ...ation condition Check connection pipe specified pipe length and pipe diameter Check any loose or removed communication line If there is an abnormal condition correct it by referring to the installation manual or the DESIGN TECHNICAL MANUAL Check point 5 Check Refrigeration cycle Check if strainer is clogged Refer to the figure below Measure gas pressure and if there is a leakage correct it Check t...

Page 80: ...nd outlet as shown be low Pipe In Pipe Out If there is a difference like shown below there is a possibility of inside clogged In this case re place the strainer Pipe In Pipe Out 3 4 No cooling No heating 03 46 3 Troubleshooting without error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 81: ...grille and front panel normal Is main unit installed in stable condi tion Is fan guard installed normally Is fan broken or deformed Is the screw of fan loose Is there any object which obstruct the fan rotation Is fan broken or deformed Is the screw of fan loose Is there any object which obstruct the fan rotation End Check if vibration noise by loose bolt or contact noise of piping is happening Is ...

Page 82: ...in stable condi tion Is main unit broken or deformed at the time of transportation or maintenance Is the filter clogged Is drain hose connection loose Is there a trap in drain hose Is drain hose clogged Check gas pressure and cor rect it if there was a gas leak MPa MPa Is fan rotating End End 3 6 Water leaking 03 48 3 Troubleshooting without error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 83: ...defect of compressor is con sidered Locked compressor due to clogged dirt or less oil Is gas pipe valve open Low pressure is too low Defective compressor can be considered due to inside dirt clogging or broken component Replace compressor Check if refrigerant is leaking MPa MPa Replace compressor End Check if strainer is clogged Refer to outdoor EEV in this chapter End Check main PCB connection of...

Page 84: ...PCB W402 W Compressor BLACK WHITE RED W400 U W401 V Check point 2 Check winding resistance Check winding resistance of each terminal Resistance value 1 546 Ω at 20 C R U T W S V RED WHITE BLACK If the resistance value is 0 Ω or infinite replace compressor Check point 3 Replace inverter PCB If check point 1 to 2 do not improve the symptom replace main PCB 4 2 Inverter compressor 03 50 4 Service par...

Page 85: ...EEV Check point 3 Check voltage from main PCB Remove connector and check voltage DC 12 V If it does not appear replace main PCB Check point 4 Check noise at start up Turn on the power and check the operation noise If an abnormal noise does not show replace main PCB Check point 5 Check opening and closing operation of valve When valve is closed it has a temp difference between inlet and outlet Pipe...

Page 86: ...let and outlet as shown be low Pipe In Pipe Out If there is a difference like shown below there is a possibility of inside clogged In this case replace the strainer Pipe In Pipe Out 4 3 Outdoor unit Electronic Expansion Valve EEV 03 52 4 Service parts information TROUBLESHOOTING TROUBLESHOOTING ...

Page 87: ...elow Circuit test Vm and GND terminal NOTE Vm DC voltage GND Earth terminal If they are short circuited below 300 kΩ replace indoor fan motor and controller PCB Pin number wire color Terminal function symbol 1 DC voltage 4 Earth terminal 1 Red DC voltage Vm 2 No function 3 No function 4 Black Earth terminal GND 5 White Control voltage Vcc 6 Yellow Speed command Vsp 7 Blue Feed back FG 4 4 Indoor u...

Page 88: ...low Circuit test Vm and GND terminal NOTE Vm DC voltage GND Earth terminal If they are short circuited below 300 kΩ replace outdoor fan motor and controller PCB Pin number wire color Terminal function symbol 1 DC voltage 4 Earth terminal 1 Red DC voltage Vm 2 No function 3 No function 4 Black Earth terminal GND 5 White Control voltage Vcc 6 Yellow Speed command Vsp 7 Brown Feed back FG 4 5 Outdoor...

Page 89: ...e of contact C H Pressure Characteristics of pressure switch Pressure switch 1 Contact Short Open 4 2 4 05 MPa Contact Open Short 3 2 0 15 MPa 54 model P770 4 6 Pressure switch 03 55 4 Service parts information TROUBLESHOOTING TROUBLESHOOTING ...

Page 90: ...heck Point 3 Check operation of 4 way valve Check each piping temperature and confirm the location of the valve by the temperature difference Heating Operation Heating Operation AC SOLENOID COIL 4WAY VALVE HOT GAS HOT GAS ON Cooling Operation Cooling Operation AC SOLENOID COIL 4WAY VALVE HOT GAS HOT GAS OFF If the valve location is not proper replace 4 way valve Check Point 4 Replace main PCB If n...

Page 91: ... 3 49 Heat exchanger temperature thermistor Temperature C Resistance kΩ Voltage V 30 0 1 131 91 0 21 25 0 804 52 0 29 20 0 579 59 0 40 15 0 422 89 0 53 10 0 312 27 0 69 5 0 233 21 0 88 0 0 176 03 1 10 5 0 134 23 1 36 10 0 103 34 1 63 15 0 80 28 1 92 20 0 62 91 2 21 25 0 49 70 2 51 30 0 39 57 2 79 35 0 31 74 3 06 40 0 25 64 3 30 45 0 20 85 3 53 50 0 17 06 3 73 55 0 14 05 3 90 60 0 11 64 4 02 65 0 9...

Page 92: ... 5 0 20 73 0 34 0 0 15 83 0 43 5 0 12 21 0 55 10 0 9 50 0 68 15 0 7 46 0 84 20 0 5 90 1 01 25 0 4 71 1 21 30 0 3 78 1 42 35 0 3 06 1 64 40 0 2 50 1 88 45 0 2 05 2 11 50 0 1 69 2 35 55 0 1 40 2 58 60 0 1 17 2 81 65 0 0 99 3 02 70 0 0 83 3 22 75 0 0 70 3 41 80 0 0 60 3 58 5 2 Outdoor unit 03 58 5 Thermistor resistance values TROUBLESHOOTING TROUBLESHOOTING ...

Page 93: ...0 79 12 0 71 20 0 62 55 0 86 25 0 49 84 1 03 30 0 40 01 1 23 35 0 32 35 1 43 40 0 26 34 1 65 45 0 21 58 1 88 50 0 17 79 2 11 55 0 14 75 2 34 60 0 12 30 2 57 65 0 10 32 2 79 70 0 8 70 3 00 75 0 7 36 3 19 80 0 6 27 3 37 85 0 5 36 3 54 90 0 4 60 3 69 95 0 3 96 3 83 100 0 3 43 3 96 105 0 2 98 4 07 110 0 2 60 4 17 115 0 2 27 4 26 120 0 2 00 4 33 5 2 Outdoor unit 03 59 5 Thermistor resistance values TRO...

Page 94: ... 3 68 55 0 1 42 3 85 60 0 1 19 4 00 65 0 1 00 4 13 70 0 0 84 4 25 75 0 0 71 4 35 80 0 0 61 4 43 Outdoor temperature thermistor Temperature C Resistance kΩ Voltage V 30 0 224 33 0 73 25 0 159 71 0 97 20 0 115 24 1 25 15 0 84 21 1 56 10 0 62 28 1 90 5 0 46 58 2 26 0 0 35 21 2 61 5 0 26 88 2 94 10 0 20 72 3 25 15 0 16 12 3 52 20 0 12 64 3 76 25 0 10 00 3 97 30 0 7 97 4 14 35 0 6 40 4 28 40 0 5 18 4 4...

Page 95: ...4 CONTROL AND FUNCTIONS 2020 07 29 SR_CH04_AB007EG_01 ...

Page 96: ...ped 04 19 7 Various control 04 20 7 1 Auto restart 04 20 7 2 10 C HEAT operation 04 20 7 3 ECONOMY operation 04 20 7 4 POWERFUL operation 04 20 7 5 Fresh air control 04 21 7 6 Compressor preheating 04 21 7 7 External electrical heater control 04 21 7 8 Electronic expansion valve control 04 22 7 9 Drain pump control 04 23 7 10 Prevention to restart for 3 minutes 3 minutes st 04 25 7 11 4 way valve ...

Page 97: ...8 8 High temperature and high pressure release control 04 29 CONTENTS continued ...

Page 98: ......

Page 99: ... frequency is controlled within the range shown in the table below However the maxi mum frequency is limited in the range shown in the figure below based on the indoor fan mode and the outdoor temperature Compressor frequency range Model name Minimum frequency Maximum frequency ABHG54KRTA 17 rps 95 rps Limit of maximum speed based on outdoor temperature 36 C A zone 34 C 32 C B zone 30 C 21 C C zon...

Page 100: ...nge shown below Compressor frequency range Unit rps Model name Minimum frequency Maximum frequency ABHG54KRTA 17 120 1 3 Dry operation The compressor rotation frequency shall change according to the temperature set temperature and room temperature variation which the room temperature sensor of the indoor unit has detected as shown in the table below Zone is defined by set temperature and room temp...

Page 101: ... 420 480 540 600 660 Special operation Frequency rps I II III IV V VI VII VIII IX X 41 46 51 57 60 72 81 91 100 110 Time sec 1 2 3 4 5 6 7 8 9 10 120 185 245 305 605 665 725 785 845 1 000 NOTES Normal operation Cooling and dry mode Below 3 hours from the compressor stop and the compressor thermistor 15 C After defrost operation Other than when the compressor starts for the first time since the bre...

Page 102: ...1 C J zone 50 C K zone 52 C H zone 31 C I zone 46 C Model name Outdoor temperature zone Limitation of compressor frequency AOHG54KRTA A zone 50 rps B zone 47 rps C zone 40 rps D zone 30 rps E zone 22 rps F zone 20 rps G zone 16 rps H zone 16 rps I zone 17 rps J zone 23 rps K zone 28 rps 1 5 Compressor frequency limitation by outdoor temperature 04 4 1 Compressor frequency control CONTROL AND FUNCT...

Page 103: ...oor temperature zone Limitation of compressor frequency AOHG54KRTA A zone 46 rps B zone 42 rps C zone 35 rps D zone 32 rps E zone 23 rps F zone 20 rps G zone 17 rps H zone 13 rps I zone 16 rps 1 5 Compressor frequency limitation by outdoor temperature 04 5 1 Compressor frequency control CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 104: ...dle zone indoor unit operation mode is selected as below Same operation mode is selected as outdoor unit If outdoor unit is operating in cooling and heating mode indoor unit will be operated by the same operation mode Selected by outdoor temperature If outdoor unit is operating in other than cooling and heating mode indoor unit will be op erated according to the outdoor temperature as below Outdoo...

Page 105: ...ation Middle zone Operation mode of outdoor unit Cooling Outdoor temp 25 C Operation mode before the monitor mode is cooling mode Monitor mode Room temp Ts 2 C No Yes No Yes No Yes No Yes No No Operation mode of outdoor unit Heating Yes Yes No System stops or operation command other than auto changeover operation Yes No Yes No Thermostat remains in off state for 6 minutes or longer Yes No 04 7 2 A...

Page 106: ... AUTO QUIET LOW MED HIGH while indoor unit fan only runs When fan mode is set at AUTO it operates on MED fan speed Cooling operation Switch the airflow AUTO and indoor fan motor will run according to room temperature as below On the other hand if switched in HIGH QUIET indoor motor will run at a constant airflow of COOL operation modes QUIET LOW MED HIGH as shown in Fan speed above Airflow change ...

Page 107: ...prevention control heating mode The maximum value of the indoor fan speed is set as shown below based on the detected tempera ture by the indoor heat exchanger sensor on heating mode Normal operation 42 C Indoor heat exchanger temperature rises Setting fan mode Cool air prevention S LOW Indoor heat exchanger temperature drops 39 C 37 C 30 C 37 C 34 C 32 C 24 C MED or setting fan mode LOW or settin...

Page 108: ...e return prevention control cooling and dry mode Switch the airflow AUTO at cooling mode and the indoor fan motor will run as shown below Compressor On Off Indoor fan setting airflow S LOW Off 10 30 60 180 60 180 60 10 30 sec Indoor fan speed 3 1 Indoor fan control 04 10 3 Fan control CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 109: ... 820 7 600 740 6 530 650 5 490 540 4 400 460 3 330 380 2 270 290 1 200 200 S HIGH 990 When the compressor frequency increases the outdoor fan speed also changes to the higher speed When the compressor frequency decreases the outdoor fan speed also changes to the lower speed NOTE After defrost control on the heating mode the fan speed is kept higher regardless of the compressor frequency Fan speed ...

Page 110: ...ion setting will temporarily become 1 when the temperature of the airflow is low at the start of the Heating mode After beginning of AUTO HEAT mode operated and automatic defrosting operation the airflow will be horizontal 1 However the airflow direction cannot be adjusted at beginning AUTO operation mode 4 2 Swing operation To select vertical airflow swing operation When the swing signal is recei...

Page 111: ...mer The program timer allows the off timer and the on timer to be used in combination one time Operation mode Stop mode Stop mode Stop mode Operation mode Operation mode Set time Set time Set time Set time Operation will start from the timer setting either off timer and on timer whichever is closest to the clock current timer setting The order of operations is indicated by the allow in the remote ...

Page 112: ...r After that the setting temperature is not changed and the operation is stopped at the setting time Set temperature rises Ts Set temperature Stop of operation Ts 2 C Set 60 min 1 C In the heating operation mode When the sleep timer is set the setting temperature is decreased 1 C It decreases the setting temperature another 1 C every 30 minutes Upon lowering 4 C the setting temperature is not chan...

Page 113: ...imer The program timer allows the off timer and the on timer to be used in combination one time Operation mode Stop mode Stop mode Stop mode Operation mode Operation mode Set time Set time Set time Set time Operation will start from the timer setting either off timer and on timer whichever is closest to the clock current timer setting The order of operations is indicated by the allow in the remote...

Page 114: ...Stop of operation Ts 2 C Set 60 min 1 C In the heating operation mode When the sleep timer is set the setting temperature is decreased 1 C It decreases the setting temperature another 1 C every 30 minutes Upon lowering 4 C the setting temperature is not changed and the operation is stopped at the setting time Set Ts 2 C 1 C 3 C 4 C Ts Set temperature 30 min 30 min 30 min Stop of operation Set temp...

Page 115: ...ner will operate at a minimum of 18 C even if the SET BACK temperature is set to 17 C or lower Case of SET BACK timer on the Cooling operation Setting temperature 22 C SET BACK temperature 26 C SET BACK setting Operation temperature Operation temperature 26 C 22 C 26 C 22 C 24 C 1 ON OFF OFF ON 1 During the SET BACK function the setting temperature is changed Chenge the setting temperature 22 C 24...

Page 116: ...0 5 deg Tn 10 C Tn Tnb 2 deg Tn 10 C Tn 25 C Ta 20 C Tn Ta 7 C or Tn 25 C Ta 20 C Integrating defrost Constant monitoring Compressor integrating operation time More than 240 min For long continuous operation More than 215 min For long continuous operation Less than 10 min For intermittent operation Condition Tn 3 C Tn 5 C Count of the compressor off 40 times If the compressor continuous operation ...

Page 117: ...nditions are satisfied in heating operation Compressor operation integrating time 30 minutes or more Compressor continuous operation time 10 minutes or more Outdoor unit heat exchanger temperature 4 C or less Release condition The defrost operation is released when either one of the conditions below is satisfied Outdoor unit heat exchanger temperature after 1 minute or later since compressor start...

Page 118: ...y Economy Defrost operation Operate as normal 7 3 ECONOMY operation The ECONOMY operation starts by pressing ECONOMY button on the remote controller The ECONOMY operation is almost the same operation as below settings Mode Cooling Dry Heating Target temperature Setting temperature 1 C Setting temperature 1 C 7 4 POWERFUL operation The POWERFUL operation starts by pressing POWERFUL button on the re...

Page 119: ...eheating stops 30 minutes after compressor stopped Triggering condition 2 0 C Off On Tn Tn 2 C Tn Outdoor unit heat exchanger temp 7 7 External electrical heater control The external electrical heater is operated as below When the room temperature rises When the room temperature drops Ts Setting temperature Heater Off Heater On Heater Off Ts 10 C Ts 1 C Ts 3 C Ts 12 C NOTES When the compressor sto...

Page 120: ...w Operation mode Pulse range Cooling dry mode Between 47 and 480 pulses Heating mode Between 39 and 480 pulses NOTE At the time of supplying the power to the outdoor unit the initialization of the electronic ex pansion valve is operated 528 pulses are input to the closing direction 7 8 Electronic expansion valve control 04 22 7 Various control CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 121: ...e compressor is stopped by Anti freezing control for the operation after re lease When the compressor is not in operation Triggering condition The thermostat is turned off The compressor is stopped The operation is switched to heating mode The float switch is turned off Operation details Count 180 minutes Start drain pump intermittent operaion On Off Drain pump 3 min 3 min 3 min Trigger point 0 mi...

Page 122: ...ease 3 minutes passed Operation after release The compressor stopps permanently The compressor is stopped by Anti freezing control Triggering condition During the compressor in operation the compressor is stopped by Anti freezing control Operation details The drain pump is kept on in 60 minutes after Anti freezing control released Release condition 60 minutes passed Operation after release Accordi...

Page 123: ...ion details If there is no one in the room for a while Cooling Dry The setting temperature is increased by maximum 2 C Maximum setting temperature 30 C Heating The setting temperature is decreased by maximum 2 C Minimum setting temperature 16 C Auto Energy saving function is performed automatically for the selected mode cooling heating dry Details about detection with the human sensor The human se...

Page 124: ...s stopped and the indoor unit LED starts blinking Trigger condition 104 C Compressor frequency 14 rps 120 seconds Release condition 101 C Compressor protection temperature 110 C 8 2 Anti freezing control cooling and dry mode The compressor frequency is decrease in cooling and dry mode when the indoor unit heat exchang er temperature sensor detects the temperature lower than the trigger condition W...

Page 125: ...ect less than 300 rpm for 10 seconds IPM trip protection works Current overload protection works When detecting the above condtion recheck the condition after 6 minutes When count the twice the protection works Protection contents Reduce the static pressure 20 Pa When it does not dissolve even the minimum static pressure condition work the following operation Fan motor error displayed when less th...

Page 126: ...after compressor stop Compressor restart 8 7 Low outdoor temperature protection When the outdoor temperature sensor detects lower than the trigger condition below the compres sor is stopped Operation mode Cooling Dry Heating Trigger condition 20 C 20 C Release condition 15 C 15 C 8 6 High pressure protection 04 28 8 Various protections CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 127: ...rotection is released and the operation is returned to normal mode Zone D Heating mode Indoor unit heat exchanger temperature rises Indoor unit heat exchanger temperature drops Stable zone AB BC CD DE Zone A Zone B Zone C Zone D Zone E AB 63 C BC 55 C CD 53 C DE 50 C Zone Operation Zone A Compressor is stopped Zone B The compressor frequency is decreased 10 rps 120 sec Zone C 2 rps 120 sec Zone D ...

Page 128: ...8 8 High temperature and high pressure release control 04 30 8 Various protections CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 129: ...5 FILED WORKING 2020 07 29 SR_CH05_AB007EG_01 ...

Page 130: ... 1 Control PCB and switch buttons location 05 6 2 2 Local setting procedure 05 8 3 External input and output for indoor unit 05 10 3 1 External input 05 10 3 2 External output 05 12 3 3 Combination of external input and output 05 13 3 4 Details of function 05 15 4 External input and output for outdoor unit 05 21 4 1 External input 05 21 4 2 External output 05 23 ...

Page 131: ... will not be changed if invalid numbers or setting values are selected Function setting list Function no Functions 1 11 Filter sign 2 20 Ceiling height 3 28 Horizontal louver direction switching for dew condensation prevention 4 30 31 Room temperature control for indoor unit sensor 5 35 36 Room temperature control for wired remote controller sensor 6 40 Auto restart 7 42 Room temperature sensor sw...

Page 132: ...ending on the installed environment correction of the room temperature sensor may be re quired Select the appropriate control setting according to the installed environment The temperature of the room temperature sensor is corrected as follows Corrected temp Temp of the room temp sensor Correction temp value Example of correction When the temperature of the room temp sensor is 26 C and the setting...

Page 133: ...o restart Enables or disables automatic restart after a power interruption Function number Setting value Setting description Factory setting 40 00 Enable 01 Disable NOTE Auto restart is an emergency function such as for power outage etc Do not attempt to use this function in normal operation Be sure to operate the unit by remote controller or exter nal device 7 Room temperature sensor switching On...

Page 134: ...on Factory setting 48 00 Both 01 Wired remote controller 11 Indoor unit fan control for energy saving for cooling Enables or disables the power saving function by controlling the indoor unit fan rotation when the outdoor unit is stopped during cooling operation Function number Setting value Setting description Factory setting 49 00 Disable 01 Enable 02 Remote controller 00 When the outdoor unit is...

Page 135: ...o External input and output Function number Setting value Setting description Factory setting 60 00 Operation status 01 08 Setting prohibited 09 Error status 10 Indoor unit fan operation status 11 External heater 1 1 Function settings by using remote controller 05 5 1 Function settings for indoor unit FIELD WORKING FIELD WORKING ...

Page 136: ...the switch buttons discharge the static electricity from your body Never touch the terminals or the patterns on the parts that are mounted on the PCB 2 1 Control PCB and switch buttons location Control PCB of the outdoor unit is located as shown in the following figure LED lamps Switch buttons 2 1 Control PCB and switch buttons location 05 6 2 Function settings for outdoor unit FIELD WORKING FIELD...

Page 137: ...L3 indicates low noise level 5 PEAK CUT MODE L4 L5 and L6 Orange Lights on during Peak cut mode when local setting is activated Lighting pattern of L4 L5 and L6 indicates peak cut level Switch button Function or operation method S134 MODE Switches between Local setting and Error code display S133 SELECT Switches between the individual Local settings and the Error code displays S132 ENTER Switches ...

Page 138: ... switch button S133 and adjust the LED lamps as shown below PEAK CUT MODE 1 Low MODE 2 Lower Blink Blink L4 L5 L6 6 Press the ENTER switch button S132 and fix it PEAK CUT MODE 1 Low MODE 2 Lower L4 L5 L6 7 To return to Operating status display Normal operation press the EXIT switch button S131 In case of missing how many times you pressed the SELECT and ENTER switch buttons 1 To return to Operatio...

Page 139: ...n S133 and adjust the LED lamps as shown below 0 of rated input ratio 50 of rated input ratio 75 of rated input ratio 100 of rated input ratio Blink Blink Blink Blink Blink PEAK CUT L4 L5 L6 6 Press the ENTER switch button S132 and fix it 0 of rated input ratio 50 of rated input ratio 75 of rated input ratio 100 of rated input ratio PEAK CUT L4 L5 L6 7 To return to Operating status display Normal ...

Page 140: ...y contact Apply voltage Edge Pulse Forced thermostat off Input 1 Edge Operation status Output 1 Output 2 Output 3 Error status Indoor unit status External heater output 3 1 External input Operation Stop mode or Forced stop mode can be selected with function setting of indoor unit A twisted pair cable 22AWG should be used Maximum length of cable is 150 m The wire connection should be separate from ...

Page 141: ... SW1 to NON VOL side 1 2 C Input 1 Input 2 PCB Connected unit 1 The switches can be used on the following condition DC 12 V to 24 V 1 mA to 15 mA Apply voltage In case of external power supply set the slide switch of SW1 to VOL side 1 2 C Input 1 Input 2 Power supply PCB Connected unit 1 The switches can be used on the following condition DC 12 V to 24 V 1 mA to 15 mA 2 Make the power supply DC 12...

Page 142: ...ected unit When connecting with a device equipped with a power supply Example Function setting 60 is set to 00 1 2 Connected device CN47 PCB Connected unit Relay Operation status External input and output PCB A twisted pair cable 22AWG should be used Permissible voltage and current DC 5 V to 30 V 3 A AC 30 V to 250 V 3 A For details refer to Chapter 3 3 Combination of external input and output on ...

Page 143: ...at OFF Not available Edge Mode Function setting External input and output PCB Rotary SW External output Indoor unit Output External input and output PCB CN47 Output 1 Output 2 Output 3 0 1 60 00 1 Operation Stop Operation Stop Error status Indoor unit fan operation status 0 2 60 00 2 Operation Stop Error status Indoor unit fan operation status External heater output 1 8 60 01 to 60 08 3 9 A Settin...

Page 144: ...gnal type can be selected Signal type edge or pulse can be switched by the DIP switch 2 SW2 on the External input and output PCB Edge Pulse The width of pulse must be longer than 200 msec 3 3 Combination of external input and output 05 14 3 External input and output for indoor unit FIELD WORKING FIELD WORKING ...

Page 145: ...ion Stop Remote controller On Off Indoor unit On Input In the case of Pulse input Function setting Rotary SW of External input and output PCB External input Input signal Command 46 00 60 00 1 External input and output PCB Input 1 Pulse Operation Input 2 Pulse Stop On On Off Operation Stop Remote controller On Off Indoor unit Input 1 Input 2 NOTES The last command has priority The indoor units with...

Page 146: ...ng Rotary SW of External input and output PCB External input Input signal Command 46 02 60 00 1 External input and output PCB Input 1 Pulse Forced stop Input 2 Pulse Normal On Off Operation Stop Remote controller On Off Forced stop Normal Input 1 Input 2 On On On Indoor unit NOTES When the forced stop is triggered indoor unit stops and Operation Stop operation by the re mote controller is restrict...

Page 147: ... controller On On Off In the case of Pulse input Function setting Rotary SW of External input and output PCB External input Input signal Command 46 03 60 00 1 External input and output PCB Input 1 Pulse Operation Input 2 Pulse Stop R C disabled On On Off Operation Stop Remote controller On Off Indoor unit Input 1 Input 2 R C disabled Off On NOTES When Operation Stop mode 2 function is used with fo...

Page 148: ... Control output function Function setting Rotary SW of External input and output PCB External output Output signal Command 60 00 1 2 Output of indoor unit CN47 Low High Operation High Low Stop 60 00 1 External input and output PCB Output 1 Off On Operation 60 09 B 60 10 C On Off Stop 60 11 D The output is low when the unit is stopped Operation Stop High Low CN47 On Off Output 1 Indoor unit 3 4 Det...

Page 149: ... unit fan operation status Function setting Rotary SW of External input and output PCB External output Output signal Command 60 10 C Output of indoor unit CN47 Low High Fan run High Low Fan stop 60 00 2 60 09 B 60 11 D External input and output PCB Output 2 Off On Fan run On Off Fan stop 60 00 1 Output 3 Off On Fan run On Off Fan stop Output signal Condition On The indoor unit fan is operating Low...

Page 150: ...of heating temperature Other than Heating mode On Off Error occurred Forced thermo off Fan stop protection Specifications of the signal output performance are as shown as follows Example When set temperature Ts is set at 22 C And room temperature Tr increase above 12 C signal output is on And Tr increase above 21 C signal output is off And Tr decrease below 19 C signal output is on And Tr decrease...

Page 151: ...mmercial timer or on off switch to a connector on the control PCB of the outdoor unit NOTE Product performance may drop depending on some conditions such as the outdoor temper ature Circuit diagram example Outdoor unit control PCB Connected unit Locally purchased Example Switch Signal 10m Connector 1 2 1 2 P580 PA580 Contact capacity DC 24 V or more 10 mA or more Make the distance from the PCB to ...

Page 152: ...ector 1 2 1 2 P580 PA580 Contact capacity DC 24 V or more 10 mA or more Make the distance from the PCB to the connected unit within 10 m Construct a circuit as shown in this figure with using optional parts mentioned below Input signal On in Peak cut mode Input signal Off in normal operation To set the level of Peak cut mode refer to Peak cut mode on page 05 9 On Off On Off Input signal Peak cut m...

Page 153: ...Outdoor unit control PCB Example Relay unit Connected unit Locally purchased Example Fan Signal Connector 1 2 1 2 10m 12 V On Off P590 On Off PA590 Output voltage Vcc DC 12 V 50 mA or less Make the distance from the PCB to the connected unit within 10 m Error Normal On Off Error status Output signal Optional part Part name Model name Exterior External connect kit UTY XWZXZ3 External output wire 4 ...

Page 154: ...Fan Signal Connector 1 2 1 2 10m 12 V On Off P590 On Off PA590 Output voltage Vcc DC 12 V 50 mA or less Make the distance from the PCB to the connected unit within 10 m Operation Stop On Off Compressor status Output signal Optional part Part name Model name Exterior External connect kit UTY XWZXZ3 External output wire 4 2 External output 05 24 4 External input and output for outdoor unit FIELD WOR...

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