Fujitsu General AOHG45KRTA Service Manual Download Page 124

Page: 124 / 154

7-5. Compressor temperature protection

When the compressor temperature sensor detects higher than the trigger condition below, the com-
pressor is stopped. When the compressor temperature sensor detects the release condition, the pro-
tection is released.

Trigger condition

108°C

Release condition

80°C

(3 minutes after compressor stop)

7-6. High pressure protection

Trigger condition

Pressure switch: Off (Open: Higher than 4.2 MPa)

Compressor stop

Release condition

Pressure switch: On (Close: Lower than 3.2 MPa)

(3 minutes after compressor stop)

Compressor restart

7-7. 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

Trigger condition

-20°C

Release condition

-15°C

7-5. Compressor temperature protection

- (04-30) -

7. Various protections

CONTROL AND

FUNCTIONS

CONTROL AND

FUNCTIONS

Summary of Contents for General AOHG45KRTA

Page 1: ...AIR CONDITIONER Duct type SERVICE MANUAL INDOOR ARXG45KHTB ARXG54KHTB OUTDOOR AOHG45KRTA AOHG54KRTA SR_AR040EG_03 2022 04 07 ...

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 2022 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 2022 01 24 SR_CH01_AR040EG_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: ...ial Steel sheet Color Dimensions H W D Net mm 400 1 050 500 Gross 460 1 230 640 Weight Net kg 46 Gross 51 Connection pipe Size Liquid mm in Ø9 52 3 8 Gas Ø15 88 5 8 Method Flare Operation range Cooling C 18 to 32 RH 80 or less Heating C 16 to 30 Drain port Material Steel Size mm Ø23 4 I D Ø25 4 O D Remote control Option Wired remote controller Wireless remote controller Simple remote controller IR...

Page 8: ...ell 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 on the ...

Page 9: ... Front view Top view Side view L Side view R Rear view P5 120 600 585 85 P120 2 240 108 208 356 371 1 080 1 000 862 126 1 050 851 125 295 26 28 155 14 324 400 123 41 500 139 12 Φ3 Drain port 71 88 2 1 Indoor unit 01 3 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 10: ...and ARXG54KHTB Installation by which service space is mode on top of the unit recommended 350 or more 450 or more Service space Service access Unit mm Installation by which service space is carried out from the bottom of the unit 20 or more 450 or more Service space Service access Unit mm 2 1 Indoor unit 01 4 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 11: ... 147 39 8 53 9 Liquid 40 320 355 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 2022 04 07 SR_CH02_AR040EG_02 ...

Page 14: ...A 02 6 4 Accessories 02 10 4 1 Indoor unit 02 10 4 2 Outdoor unit 02 10 5 Optional parts 02 11 5 1 Indoor unit 02 11 5 2 Outdoor unit 02 13 6 Refrigerant system diagrams 02 14 6 1 Models AOHG45KRTA and AOHG54KRTA 02 14 7 Wiring diagrams 02 15 7 1 Indoor unit 02 15 7 2 Outdoor unit 02 16 8 PC board diagrams 02 17 8 1 Models ARXG45KHTB and ARXG54KHTB 02 17 8 2 Models AOHG45KRTA and AOHG54KRTA 02 18 ...

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: ... ARXG45KHTB and ARXG54KHTB Casing and fan 2 3 14 8 15 12 13 5 6 4 7 10 1 Connector black 11 Connector white 9 2 1 Models ARXG45KHTB and ARXG54KHTB 02 2 2 Indoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 17: ...59029 Sirocco Fan 8 9372636022 Kit Panel Rear Sub Assy 9 9900826086 Room Thermistor 10 9372584248 Evaporator Sub Assy 11 9901075032 Pipe Thermistor 12 9372579015 Drain Pan Assy 13 9372916025 Kit Panel Right Sub Assy 14 9372581018 Kit Panel Left Sub Assy 15 9372582015 Drain Pan S Sub Assy 2 1 Models ARXG45KHTB and ARXG54KHTB 02 3 2 Indoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA...

Page 18: ... Main PC board 27 22 25 24 26 21 23 2 1 Models ARXG45KHTB and ARXG54KHTB 02 4 2 Indoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 19: ...ctor CN300 on Main PCB Terminal 9710177118 Wire with connector CN46 on Main PCB Terminal 9710703027 Wire with connector CN205 on Power supply PCB Terminal AC power 9712115002 Wire assy CN12 on Main PCB Relay Sec 9710171093 Wire with connector CN54 on Main PCB CN264 on Power supply PCB 9710172014 Wire with connector CN55 on Main PCB CN263 on Power supply PCB 2 1 Models ARXG45KHTB and ARXG54KHTB 02 ...

Page 20: ...5KRTA and AOHG54KRTA Exterior parts and chassis 15 6 9 12 7 2 1 16 20 17 14 13 23 24 18 21 22 a b 11 10 4 5 3 3 19 8 3 1 Models AOHG45KRTA and AOHG54KRTA 02 6 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 21: ...fan 22 9603733018 Brushless motor 23 9383862014 Motor bracket assy 24 9374420605 Condenser sub assy 9711198020 Wire with connector P108 on Main PCB Terminal 9711445001 Wire with connector P104 106 on Main PCB W200 202 on Inverter PCB 9711446008 Wire with terminal P203 204 on Inverter PCB Reactor 9711203007 Wire with connector P660 on Main PCB P662 on Inverter PCB 9711204004 Wire with connector P66...

Page 22: ... Compressor 58 57 53 60 64 59 b 50 52 A c A 61 51 55 a 54 56 B B 63 62 65 3 1 Models AOHG45KRTA and AOHG54KRTA 02 8 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 23: ...or assy service 58 9970209000 Expansion valve coil 59 9370947311 Expansion valve assy 60 9379079013 3 way valve assy 61 9377958037 3 way valve assy 62 9900985028 Thermistor Compressor 63 9379179089 Rubber washer F 64 9377973016 Special nut 65 9810626004 Compressor assy a Thermostat holder b Joint pipe D c Wiring fixation unit 3 1 Models AOHG45KRTA and AOHG54KRTA 02 9 3 Outdoor unit parts list TECH...

Page 24: ... 1 Operation manual CD ROM 1 Washer 8 Installation manual 1 Cable tie 1 Coupler heat insulation large 1 4 2 Outdoor unit Models AOHG45KRTA and 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 10 4 Accessories TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 25: ...ller 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 Wire type Non polar 2 wire IR receiver kit with wireless remote controller U...

Page 26: ... UTY TFSXZ1 Remotely manage an air conditioning system using mobile devices such as smartphones and tablets For connection indoor unit with UART interface Appropriate application for each region is required to use this option For details contact FGL sales company Connecting point CN75 on Main PCB Modbus converter UTY VMSX For connection between indoor unit with UART interface and a Modbus open net...

Page 27: ... switch controller UTY TERX Air conditioner switching can be controlled by connecting other external sensor switches Use the terminal for wired remote controller 5 2 Outdoor unit Exterior Part name Model name Summary External connect kit UTY XWZXZ3 Use to operate the external input and output functions of outdoor unit 5 1 Indoor unit 02 13 5 Optional parts TECHNICAL DATA AND PARTS LIST TECHNICAL D...

Page 28: ...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 Models AOHG45KRTA and AOHG54KRTA 02 14 6 Refrigerant system diagrams TECHNICAL DATA...

Page 29: ...7 Wiring diagrams 7 1 Indoor unit Models ARXG45KHTB and ARXG54KHTB 7 1 Indoor unit 02 15 7 Wiring diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 30: ...7 2 Outdoor unit Models AOHG45KRTA and AOHG54KRTA 7 2 Outdoor unit 02 16 7 Wiring diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 31: ... N CN263 B10B PLIRK 1 RED CN264 B04B XNISK A 1 WHITE CN8 B02B XASK 1 A WHITE CN32 B03B PASK 1 WHITE CN71 B04B XASK 1 A WHITE CN12 B05B PLISK 1 WHITE CN11 B05B XASK 1 A WHITE CN48 B09B PASK 1 WHITE CN65 B04B PASK 1 WHITE CN75 B04B PAKK 1 BLACK CN1 S09B PASK 2 WHITE THERMISTOR ROOM TEMP THERMISTOR PIPE MID TEMP FAN MOTOR CAPACITOR 370VAC 20uF TLC10AN4 10A AC250V Time delay fuse RERLAY DH12D1 1F DC12...

Page 32: ...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 TRANSISTOR PCB 36 model K17PW 19...

Page 33: ...3 TROUBLESHOOTING 2022 04 07 SR_CH03_AR040EG_02 ...

Page 34: ...p terminal L error Outdoor unit 03 18 2 13 E 71 Discharge thermistor error Outdoor unit 03 19 2 14 E 72 Compressor thermistor error Outdoor unit 03 20 2 15 E 73 Heat exchanger Middle Outlet temperature thermistor error Outdoor unit 03 21 2 16 E 74 Outdoor temperature thermistor error Outdoor unit 03 22 2 17 E 77 Heat sink thermistor error Outdoor unit 03 23 2 18 E 84 Current sensor error Outdoor u...

Page 35: ...45 4 4 Indoor unit fan motor 03 47 4 5 Outdoor unit fan motor 03 48 4 6 Pressure switch 03 49 4 7 4 way valve coil solenoid coil 4 way valve 03 50 4 8 Discharge pressure sensor 03 51 5 Thermistor resistance values 03 52 5 1 Indoor unit 03 52 5 2 Outdoor unit 03 53 CONTENTS continued ...

Page 36: ......

Page 37: ...rized error is only displayed during the 3 min utes ST state period Start the operation and then press the TEST RUN button on the remote controller Press the MANUAL AUTO button on the indoor unit for 10 seconds or more Error memory display 2 minutes 20 seconds Starting operation and then Press TEST RUN button on the remote controller or Press MANUAL AUTO button on the indoor unit for 10 seconds or...

Page 38: ...CB 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 exchanger Middle Outlet temperature thermistor error Outdoor unit 73 E 74 Outdoor temperature thermistor error Outdoor unit 74 E 77 Heat sink thermist...

Page 39: ...mperature sensor error Indoor unit 2 5 15 E 42 Indoor unit heat exchanger sensor error Indoor unit 2 5 15 E 53 Drain pump 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 exc...

Page 40: ...EAK CUT L1 L2 L3 L4 L5 L6 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 4 Error code table Outdoor unit 03 4 1 Error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 41: ...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 42: ...43 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 43: ...to Check point 1 2 Check point 2 Check connection Check any loose or removed connection line of indoor unit and outdoor unit If there is an abnormal condition correct it by referring to the installation manual or the DESIGN TECHNICAL MANUAL Check connection condition is control unit If there is loose connector open cable or mis wiring Check point 3 Check the voltage of power supply Check the volta...

Page 44: ...f it is abnormal replace 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 2 2 E 11 Serial communication error Serial forward transfer error Indoor unit 03 8 2 Troubleshooting with error code...

Page 45: ...g off the power check correct the followings Check the connection of terminal between wired remote controller and indoor unit and check if there is a disconnection of the cable Check Point Check Wired remote controller and main PCB If it is 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 m...

Page 46: ... unit is selected Check 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 the main PCB If check point 1 do not improve the symptom replace the main PCB of the outdoor unit End 2 4 E 23 Combination error Outdoor unit 03 10 2 Troubleshoo...

Page 47: ...point 3 Replace the main PCB Replace the 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 memor...

Page 48: ...nector 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 52 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 NOT...

Page 49: ...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 52 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 th...

Page 50: ...k ON OFF switching operation by using a meter If float switch is abnormal replace it Check point 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 Replace drain pump If check point 1 to 3 do not improve the symp...

Page 51: ...int 1 Reset power supply and operate If no go to Check point 1 2 Does error indication show again Check point 2 Replace the main PCB Replace the 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 9 E 62 Outdoor ...

Page 52: ... 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 53: ...n 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 erroneous c...

Page 54: ...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 12 E 65 Trip terminal L error Outdoor unit 03 18 2 Troubleshooting with error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 55: ...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 52 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 56: ... 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 52 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 57: ...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 52 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 58: ...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 52 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 59: ...correct wiring Check point 2 Remove connector and check thermistor resistance value For the Heat sink thermistor resistance value refer to Thermistor resistance val ues on page 03 52 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 For d...

Page 60: ...r 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 the main PCB If Check point 1 2 do not improve the symptom replace the 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...

Page 61: ...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 15 If the voltage is not correct replace main PCB Check poi...

Page 62: ...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 63: ...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 43 Upon correcting the removed connector or mis wiring reset the power Check point 3 Replace main PCB If Che...

Page 64: ...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 43 If outdoor unit fan motor is abnor...

Page 65: ...nector connection failure Thermistor failure Coil failure 4 way valve failure Main PCB failure Check point 1 Check air filter condition Check air filter dirty If the air filter dirty clean up the air filter Check point 2 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 ...

Page 66: ...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 5 Replace main PCB If Check Point 1 to 4 do not improve the symptom replace main PCB End 2 23 E 99 4 way valve error Outdoor unit 03 30 2 Troubleshooting with erro...

Page 67: ... liquid side of the 3 way valve Check point 2 Check any of the electronic expansion valve EEV capillary tube or strainer or all Check if EEV open or there is a capillary tube defect Refer to outdoor unit Electrronic Expansion Valve EEV or Capillary tube in Service parts in formation on page 03 43 Check the strainer clogging Check point 3 Check the outdoor unit fan and heat exchanger Check for fore...

Page 68: ...e refrigerant leakage Check point 6 Replace the main PCB If check point 1 to 5 do not improve the symptom replace the main PCB End 2 24 E A1 Discharge temperature error Outdoor unit 03 32 2 Troubleshooting with error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 69: ...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 43 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 70: ... refrigerant leakage Check point 6 Replace the main PCB If check point 1 to 5 do not improve the symptom replace the main PCB End 2 25 E A3 Compressor temperature error Outdoor unit 03 34 2 Troubleshooting with error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 71: ...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 72: ...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 73: ...g 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 main PCB If fuse is open check if the wiring between terminal and...

Page 74: ...ant drop 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 remot...

Page 75: ...eck 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 if EEV open or ther...

Page 76: ...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 40 3 Troubleshooting without error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 77: ...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 78: ...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 42 3 Troubleshooting without error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 79: ...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 or capillary tube in this chap ter End Check main PCB conn...

Page 80: ... Compressor BLACK WHITE RED P400 U P401 V Check point 2 Check winding resistance Check winding resistance of each terminal Resistance value 1 546 Ω 8 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 44 4 Service parts infor...

Page 81: ...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 82: ...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 46 4 Service parts information TROUBLESHOOTING TROUBLESHOOTING ...

Page 83: ... point 2 Check resistance of indoor fan motor Check each winding resistance of the motor If Resistance value is abnormal replace motor Lead wire Resistance value AC Thermal protector Pr VIOLET Med BLUE Low RED Hi BLACK WHITE 145 C White Red 7 73 Ω 7 Red Black 7 08 Ω 7 Red Violet 3 80 Ω 7 Violet Blue 3 80 Ω 7 20 C 4 4 Indoor unit fan motor 03 47 4 Service parts information TROUBLESHOOTING TROUBLESH...

Page 84: ...uit 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 unit fa...

Page 85: ... 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 P770 4 6 Pressure switch 03 49 4 Service parts information TROUBLESHOOTING TROUBLESHOOTING ...

Page 86: ...t 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 none of Ch...

Page 87: ...a 0 0 0 10 0 20 0 30 0 40 0 50 0 60 0 80 0 90 1 00 Output V 0 50 0 58 0 66 0 74 0 82 0 90 1 06 1 14 1 22 1 30 psi 174 0 203 0 232 0 261 0 290 0 319 0 343 0 377 0 406 0 435 0 MPa 1 20 1 40 1 60 1 80 2 00 2 20 2 40 2 60 2 80 3 00 Output V 1 46 1 62 1 78 1 94 2 10 2 26 2 42 2 58 2 74 2 90 psi 464 0 493 0 522 0 551 0 580 0 609 0 638 0 667 0 696 0 725 0 MPa 3 20 3 40 3 60 3 80 4 00 4 20 4 40 4 60 4 80 ...

Page 88: ... 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 05 65 0 9...

Page 89: ...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 98 3 02 70 0 0 83 3 22 75 0 0 70 3 41 80 0 0 60 3 58 85 0 0 51 3 73 90 0 0 44 3 87 95 0 0 38 3 99 100 0 0 33 4 10 5 2 Outdoor unit 03 53 5 Thermistor resistance values TROUBLESHOOTING TROUBLESHOOTING ...

Page 90: ...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 54 5 Thermistor resistance values TRO...

Page 91: ... 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 55 5 Thermistor resistance values TR...

Page 92: ... 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 93: ...4 CONTROL AND FUNCTIONS 2022 02 04 SR_CH04_AR040EG_01 ...

Page 94: ...6 3 ECONOMY operation 04 18 6 4 Fresh air control 04 18 6 5 Compressor preheating 04 19 6 6 External electrical heater control 04 19 6 7 Electronic expansion valve control 04 19 6 8 Drain pump control 04 20 6 9 Prevention to restart for 3 minutes 3 minutes st 04 22 6 10 4 way valve control 04 22 6 11 Peak cut operation 04 22 6 12 Outdoor unit low noise operation 04 23 6 13 Unit status monitoring a...

Page 95: ...sor is controlled within the range shown in the table below However the maximum rotation number is limited in the range shown in the figure below based on the in door fan mode and the outdoor temperature Rotation number range of compressor Model name Minimum frequency Maximum frequency ARXG45KHTB ARXG54KHTB 17 rps 86 rps Limit of maximum speed based on outdoor temperature 36 C A zone 34 C 32 C B z...

Page 96: ...ow Rotation number range of compressor Unit rps Model name Minimum frequency Maximum frequency ARXG45KHTB ARXG54KHTB 17 120 1 3 Dry operation The rotation number of compressor 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 ro...

Page 97: ...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 breaker turns on...

Page 98: ...zone 50 C K zone 52 C H zone 31 C I zone 46 C Model name Outdoor temperature zone Limitation of compressor frequency AOHG45KRTA 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 Rotation number of compressor limitation by outdoor temperature 04 4 1 Rotation number control of compr...

Page 99: ... zone Limitation of compressor frequency AOHG45KRTA 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 Rotation number of compressor limitation by outdoor temperature 04 5 1 Rotation number control of compressor CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 100: ...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 101: ...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 102: ...rises When room temperature drops Tr Ts 2 C HIGH mode MED mode LOW mode 2 C Tr Ts 1 C 1 C Tr Ts Tr Ts 2 5 C 2 5 C Tr Ts 1 5 C 1 5 C Tr Ts Dry operation During dry operation fan speed setting can not be changed Heating operation Switch the airflow AUTO and the indoor fan motor will run according to a room temperature as be low On the other hand if switched in HIGH QUIET the indoor motor will run at...

Page 103: ... mode 13 minutes later Indoor heat exchanger temperature rises 27 C LOW Setting fan mode 10 C HEAT operation Indoor heat exchanger temperature rises 27 C LOW AUTO Moisture 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 LOW Off 5 60 360 120 360 60 5 sec 3 1 Indoor fa...

Page 104: ...00 740 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 after de...

Page 105: ...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 106: ...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 107: ...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 108: ...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 109: ...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 110: ...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 111: ...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 112: ... operation performs as below setting when pressing 10 C HEAT button Operation mode Heating Setting temperature 10 C Fan mode AUTO LED display Economy Defrost operation Operate as normal 6 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 temperatur...

Page 113: ...r Off Ts 10 C Ts 1 C Ts 3 C Ts 12 C 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 6 7 Electronic expansion valve control The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the table below Operation mode Puls...

Page 114: ...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 115: ...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 116: ...mode compressor is stopped and the 4 way valve is switched when the 3 minutes passes and the compressor is started 6 11 Peak cut operation The current value is limited to reduce the power consumption by external input Peak cut level Level 1 Level 2 Level 3 Level 4 Peak cut for rated capacity Forced thermostat off 50 75 100 NOTES During defrost operation peak cut operation becomes invalid Even duri...

Page 117: ... them Capacity priority mode Operation condition The function setting is set to 1 Capacity check condition Shortage Compressor frequency limited compressor frequency for low noise mode Enough Compressor frequency limited compressor frequency for low noise mode Operation When detecting the shortage capacity or enough capacity condition continuous 30 minutes the mode is changed as follows Automatic ...

Page 118: ...1 C or F 00 007 Heat exchanger outlet temp 01 C or F 00 020 Fan rotation number 03 rpm 00 021 Fan 2 rotation number 03 rpm 00 022 Fan 3 rotation number 03 rpm 00 030 Expansion valve 05 pls 00 040 Operating pulse for right filter 05 pls 00 041 Operating pulse for left filter 05 pls 00 042 Operating pulse for filter brush 05 pls 00 050 Power relay for outdoor unit On Off 08 On Off 0 Off 1 On 00 051 ...

Page 119: ...peration or Stop On Off External output 00 0 Off 1 On NOTE The value is output even if the function setting or rotary switch is not set 00 156 Error On Off External output 00 0 Off 1 On NOTE The value is output even if the function setting or rotary switch is not set 00 157 Indoor unit fan interlocking On Off External output 00 0 Off 1 On NOTE The value is output even if the function setting or ro...

Page 120: ... For multi split type 01 C or F 01 040 Discharge pressure 02 MPa 01 041 Suction pressure 02 MPa 01 042 Gas pipe pressure for outdoor unit 02 MPa 01 050 Fan 1 rotation number 03 rpm 01 051 Fan 2 rotation number 03 rpm 01 055 Compressor rotation number 04 rps 01 060 Expansion valve Upstream during heating 05 pls 01 061 Expansion valve 2 Downstream during heating 05 pls 01 062 Expansion valve 3 For s...

Page 121: ... cut External input 00 0 Off 1 Mode 4 100 2 Mode 3 75 3 Mode 2 50 4 Mode 1 Forced thermostat off 01 147 Demand response External input 00 0 Normal 1 DRM1 2 DRM2 3 DRM3 01 148 Switching cooling and heating mode External input 00 0 Cooling 1 Heating 01 149 Emergency stop External input 00 0 Off 1 On 01 155 Compressor status External output 00 0 Off 1 On 01 156 Error status External output 00 0 Off 1...

Page 122: ...opped 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 7 2 Anti freezing control cooling and dry mode The rotation number of compressor is decrease in cooling and dry mode when the indoor unit heat exchanger temperature sensor detects the temperature lower than the trigger conditi...

Page 123: ...that the rotation number of the fan motor stays 300 rpm or less for 10 seconds after 90 seconds from the fan operation started IPM trip protection activates Current overload protection activates At first the function determines if any of the above conditions apply First judgment If any of the above conditions apply after the first judgment the function will make the second judgment after 6 minutes...

Page 124: ...essure protection Trigger condition Pressure switch Off Open Higher than 4 2 MPa Compressor stop Release condition Pressure switch On Close Lower than 3 2 MPa 3 minutes after compressor stop Compressor restart 7 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 Trigger condit...

Page 125: ...n 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 53 C CD 50 C DE 48 C Zone Operation Zone A Compressor is stopped Zone B The compressor frequency is decreased 7 rps 120 sec Zone C 1 rps 120 sec Zone D The prote...

Page 126: ...7 8 High temperature and high pressure release control 04 32 7 Various protections CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 127: ...5 FILED WORKING 2022 04 07 SR_CH05_AR040EG_02 ...

Page 128: ...trol PCB and switch buttons location 05 7 2 2 Local setting procedure 05 9 3 External input and output For indoor unit 05 11 3 1 External input 05 12 3 2 External output 05 14 3 3 Setting of external input and output 05 15 3 4 Details of control input function 05 16 3 5 Details of control output function 05 20 4 External input and output For outdoor unit 05 23 4 1 External input 05 23 4 2 External...

Page 129: ...sed for the function settings are located as shown in the following figure SW101 3 2 1 DIP switch setting Switch 1 Drainage function setting SW101 Switch 1 Drainage function Factory setting ON Disabled OFF Enabled Switch 2 Setting change prohibited SW101 Switch 3 Fan delay setting SW101 When the indoor unit is stopped while operating in conjunction with auxiliary heater the indoor unit fan operati...

Page 130: ...elected Function setting list Function no Functions 1 11 Filter sign 2 30 31 Room temperature control for indoor unit sensor 3 35 36 Room temperature control for wired remote controller sensor 4 40 Auto restart 5 42 Room temperature sensor switching 6 44 Remote controller custom code 7 46 External input control 8 48 Room temperature sensor switching Aux 9 49 Indoor unit fan control for energy savi...

Page 131: ...e of the room temp sensor is 26 C and the setting value is 03 1 0 C corrected temp will be 27 C 26 C 1 0 C The temperature correction values show the difference from the Standard setting 00 manufactur er s recommended value Function number Setting value Setting description Factory setting 30 For cooling 31 For heating 00 Standard setting 01 No correction 0 0 C 02 0 5 C More cooling Less heating 03...

Page 132: ...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 5 Room temperature sensor switching Only for wired remote controller When using the wired remote con...

Page 133: ...etting value Setting description Factory setting 48 00 Both 01 Wired remote controller 9 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 controlle...

Page 134: ...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 2 Function settings by using remote controller 05 6 1 Function settings For indoor unit FIELD WORKING FIELD WORKING ...

Page 135: ...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 7 2 Function settings For outdoor unit FIELD WORKING FIELD...

Page 136: ...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 137: ...L3 LOW NOISE Blink LOW NOISE MODE 4 Press the ENTER switch button S132 L2 L3 LOW NOISE LOW NOISE MOD E Sign Lights on 5 Press the SELECT 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 pre...

Page 138: ...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 139: ...put Operation status Error status Indoor unit fan operation status External heater output External input and output PCB UTY XCSX Ex IN 1 2 Input Operation Stop Dry contact Apply voltage Edge Pulse Ex IN 1 Forced thermostat off Edge Ex OUT 1 Ex OUT 2 Ex OUT 3 Output Operation status Error status Indoor unit fan operation status External heater output NOTE For details of the switching function refer...

Page 140: ... Operation Stop can be set by using the input terminal on the PCB Input select Use either one of these types of terminals according to the application Both types of terminals cannot be used simultaneously Dry contact In case of internal power supply set the slide switch of SW1 to NON VOL side 1 2 C Input 1 Input 2 Ex IN Connected device 1 1 1 The switches can be used on the following condition DC ...

Page 141: ...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 NOTE The input signal supports the following switch type Edge Alternate type switch Pulse Momentary type switch 3 1 External input 05 13 3 External input and output For indoor unit FIELD WORKING FIELD WORKING ...

Page 142: ...d device When connecting with a device equipped with a power supply Example Function setting number 60 is set to 00 1 2 Connected device CN47 PCB Connected device Relay Operation status External input and output PCB A twisted pair cable 22 AWG 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 Setting of external input and output on page 05 ...

Page 143: ...vailable Error status Indoor unit fan operation status External heater output 3 to 9 A Setting prohibited B Forced thermostat off Not available Operation status Indoor unit fan operation status External heater output C Forced thermostat off Not available Operation status Error status External heater output D Forced thermostat off Not available Operation status Indoor unit fan operation status Erro...

Page 144: ...r unit operation On Ex IN 1 On Off In the case of Pulse input Function setting External input and output PCB External input Input signal Command Rotary switch SW2 46 00 1 Pulse External input and output PCB Ex IN 1 Pulse Operation Ex IN 2 Stop On Remote controller On Off Indoor unit operation Ex IN 1 On Off On Off Ex IN 2 NOTES The last command has priority The indoor units within the same remote ...

Page 145: ...ternal input and output PCB External input Input signal Command Rotary switch SW2 46 02 1 Pulse External input and output PCB Ex IN 1 Pulse Forced stop R C disabled Ex IN 2 Normal R C enabled On Off Remote controller On Off Forced stop Normal Ex IN 1 Ex IN 2 On On On Indoor unit operation On Off NOTES When the forced stop is triggered indoor unit stops and Operation Stop operation by the remote co...

Page 146: ... On On Off In the case of Pulse input Function setting External input and output PCB External input Input signal Command Rotary switch SW2 46 03 1 Pulse External input and output PCB Ex IN 1 Pulse Operation R C enabled Ex IN 2 Stop R C disabled On On Off Remote controller On Off Indoor unit operation Ex IN 1 Ex IN 2 Off On On Off NOTE When Operation Stop mode 2 function is used with forming a remo...

Page 147: ... Command Rotary switch 2 B C D External input and output PCB Ex IN 1 Off On Thermostat off On Off Normal operation On Off On Off Compressor Room temp Set temp Ex IN 1 3 4 Details of control input function 05 19 3 External input and output For indoor unit FIELD WORKING FIELD WORKING ...

Page 148: ...us Function setting External input and output PCB External output Output signal Status Rotary switch 60 09 Output of indoor unit CN47 Off On Error On Off Normal 2 External input and output PCB Ex OUT 1 Off On Error On Off Normal 1 C External input and output PCB Ex OUT 2 Off On Error On Off Normal D External input and output PCB Ex OUT 3 Off On Error On Off Normal The output is on when an error is...

Page 149: ... Off On Fan run On Off Fan stop 1 External input and output PCB Ex OUT 3 Off On Fan run On Off Fan stop Output signal Condition On The indoor unit fan is operating Off The fan is stopped or during cold air prevention During thermostat off when in dry mode operation Fan run Fan stop CN47 On Off Ex OUT 2 3 Indoor unit On Off 3 5 Details of control output function 05 21 3 External input and output Fo...

Page 150: ...e Other than Heating mode 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 below 10 C signal output is...

Page 151: ... 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 the connected ...

Page 152: ...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 in Local setting proce dure on page 05 9 On Off On Off Input sig...

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 26 4 External input and output For outdoor unit FIELD WOR...

Search results

Summary of Contents for General AOHG45KRTA

Reviews:

Fujitsu General AOHG45KRTA, Service Manual, Page: 124 / 154

Search results

Summary of Contents for General AOHG45KRTA

Reviews: