Fujitsu GENERAL AOHG18KMTA Service Manual Download Page 158

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Indoor unit fan operation status

Function

setting

External input and

output PCB

External output

Output signal

Status

Rotary switch

60-10

Output of indoor unit

CN47

Off On

Fan run

On Off

Fan stop

—

2, B

External input and

output PCB

CN311

Off On

Fan run

On Off

Fan stop

—

External input and

output PCB

CN312

Off On

Fan run

On Off

Fan stop

Output signal

Condition

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

Off

CN47

Off

CN311, 312

Indoor unit

2-5. Details of control output function

- (05-20) -

2. External input and output

Summary of Contents for GENERAL AOHG18KMTA

Page 1: ...AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASHG18KMTE ASHG24KMTE OUTDOOR AOHG18KMTA AOHG24KMTA SR_AS070EG_02 2022 03 30 ...

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 03 11 SR_CH01_AS070EG_01 ...

Page 6: ...CONTENTS 1 GENERAL INFORMATION 1 Specifications 01 1 1 1 Indoor unit 01 1 1 2 Outdoor unit 01 4 2 Dimensions 01 5 2 1 Indoor unit 01 5 2 2 Outdoor unit 01 7 ...

Page 7: ...rflow rate Cooling HIGH m3 h 980 1 170 MED 810 850 LO 640 640 QUIET 510 510 Heating HIGH 1 020 1 170 MED 850 850 LO 640 640 QUIET 510 510 Type Q ty Crossflow fan 1 Motor output 59 Sound pressure level 2 Cooling HIGH dB A 45 49 MED 40 40 LO 35 35 QUIET 29 29 Heating HIGH 46 49 MED 40 40 LO 35 35 QUIET 29 29 Heat exchanger type Dimensions H D mm Main1 210 798 26 6 Main2 135 798 20 Sub1 84 798 13 3 S...

Page 8: ...e function might work when using it outside the operation range 1 Maximum operating current is the total current of the indoor unit and the outdoor unit 2 Sound pressure level Measured values in manufacturer s anechoic chamber Because of the surrounding sound environment the sound levels measured in actual installation conditions might be higher than the specified values here 3 Available on Google...

Page 9: ...Cooling k 5 2 35 C 7 1 35 C Heating Average 4 8 10 C 7 1 10 C SEER Cooling k h k h 7 77 7 30 SCOP Heating Average 4 60 4 20 Annual energy consumption QCE k h a 234 340 QHE Average 1 460 2 362 Sound power level Cooling HIGH dB A 60 65 Heating 61 65 1 1 Indoor unit 01 3 1 Specifications GENERAL INFORMATION GENERAL INFORMATION ...

Page 10: ...r Beige Approximate color of Munsell 10YR 7 5 1 0 Dimensions H D Net mm 632 799 290 716 820 315 Gross 692 940 375 776 961 450 eight Net kg 36 42 Gross 40 46 Connection pipe Size Liquid mm in Ø6 35 Ø1 4 Gas Ø12 70 Ø1 2 Method Flare Pre charge length m 15 Max length 25 30 Max height difference 20 25 Operation range Cooling C 10 to 46 Heating 15 to 24 Drain hose Material PP Size mm Ø13 0 I D Ø16 0 to...

Page 11: ...ls ASHG18KMTE and ASHG24KMTE Unit mm for pipe inlet Ø65 50 60 430 52 980 240 280 Outline of indoor unit for pipe inlet Ø65 400 413 90 77 50 72 418 91 417 482 510 2 1 Indoor unit 01 5 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 12: ...safety Unit mm 1 500 or more 1 800 or more The flare connection part should be installed outdoors 50 or more 40 or more 117 or more 71 or more 70 or more 160 or more Wall hook bracket Outline of the indoor unit 2 1 Indoor unit 01 6 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 13: ...ttom view Side view Valve part Top view 580 799 19 68 16 290 33 30 109 353 632 20 330 Pitch of bolts for installation Pitch of bolts for installation 4 M10 hole Airflow Drain port Ø42 37 120 184 399 180 2 2 Outdoor unit 01 7 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 14: ...6 315 20 18 Airflow 600 109 353 330 Pitch of bolts for installation Pitch of bolts for installation 4 M10 hole 820 19 68 716 20 Drain port Ø42 37 410 Bottom view Side view Valve part 119 184 194 2 2 Outdoor unit 01 8 2 Dimensions GENERAL INFORMATION GENERAL INFORMATION ...

Page 15: ...2 TECHNICAL DATA AND PARTS LIST 2022 03 11 SR_CH02_AS070EG_02 ...

Page 16: ...MTA 02 6 3 2 Model AOHG24KMTA 02 10 4 Accessories 02 14 4 1 Indoor unit 02 14 4 2 Outdoor unit 02 15 5 Refrigerant system diagrams 02 16 5 1 Model AOHG18KMTA 02 16 5 2 Model AOHG24KMTA 02 17 6 Wiring diagrams 02 18 6 1 Indoor unit 02 18 6 2 Outdoor unit 02 19 7 PC board diagrams 02 21 7 1 Models ASHG18KMTE and ASHG24KMTE 02 21 7 2 Model AOHG18KMTA 02 22 7 3 Model AOHG24KMTA 02 23 ...

Page 17: ...s working in the local area shall be instructed on the nature of work being carried out ork 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 to...

Page 18: ...Models ASHG18KMTE and ASHG24KMTE Exterior parts 1 2 2 6 11 12 13 16 15 18 17 a b c 13 14 7 4 8 5 3 10 9 2 1 Models ASHG18KMTE and ASHG24KMTE 02 2 2 Indoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 19: ...y 9 9332438703 ireless remote controller 10 9318912005 Remote controller holder 11 9384977137 Front panel total assy 12 9387756111 Intake grille assy 13 9323340008 Air filter 14 9333719009 Grille clamper L 15 9333704005 Grille clamper R 16 9323341043 Under cover L 17 9333608006 Bush 18 9383730030 Louver spring a Front panel b Panel cover c Front panel B 2 1 Models ASHG18KMTE and ASHG24KMTE 02 3 2 ...

Page 20: ...0 60 51 50 74 63 64 62 61 65 73 68 70 71 67 66 a 53 b 54 55 c 56 57 72 71 52 58 59 58 69 2 1 Models ASHG18KMTE and ASHG24KMTE 02 4 2 Indoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 21: ...b assy 62 9383565007 Pipe bracket 63 9603631000 DC fan motor 64 9387713015 Motor cover assy 65 9387488012 Cable guide 66 9387714012 Gear case assy 67 9901011016 Stepping motor 68 9383728006 R and L louver SPM assy 69 9901011023 Stepping motor 70 9387590142 Drain pan total assy 71 9316177017 Drain cap 72 9316904002 Drain hose assy 73 9333628004 Bearing D assy 74 9387055054 Crossflow fan assy 990101...

Page 22: ... list 3 1 Model AOHG18KMTA Exterior parts and Chassis 1 2 6 19 13 10 14 15 5 7 8 8 12 16 17 18 7 a 20 4 3 11 9 3 1 Model AOHG18KMTA 02 6 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 23: ...7 Rubber cushion 9 9900435028 Terminal 6 pin 10 9709687703 Main PCB 11 9322420039 Heat sink 12 9322144003 Drain pipe 13 9322314024 Base assy 14 9319157009 Emblem 15 9322555021 Front panel assy 16 9322149008 Blow grille 17 9322150004 Propeller fan 18 9603601003 DC fan motor 19 9322553027 Motor bracket assy 20 9323834026 Heat exchanger unit a Hair pin cushion 3 1 Model AOHG18KMTA 02 7 3 Outdoor unit...

Page 24: ... Compressor 50 51 52 53 54 55 a 56 b A A 60 59 58 57 3 1 Model AOHG18KMTA 02 8 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 25: ... 9322463029 Pulse motor valve assy 55 9322474001 2 way valve assy 56 9387831016 3 way valve assy 57 9322500007 Sound insulator B 58 9322847003 Sound insulator F 59 9322501004 Sound insulator H 60 9323045002 Sound insulator V a Valve bracket b Muffler 3 1 Model AOHG18KMTA 02 9 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 26: ... AOHG24KMTA Exterior parts and Chassis 21 a 8 1 9 2 11 13 12 4 16 15 17 6 7 7 6 18 20 19 3 5 10 14 3 2 Model AOHG24KMTA 02 10 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 27: ...ht assy 9 9322570031 Switch cover assy 10 9900435028 Terminal 6 pin 11 9709687710 Main PCB 12 9322144003 Drain pipe 13 9322322029 Base assy 14 9322421043 Heat sink 15 9319157009 Emblem 16 9322555038 Front panel assy 17 9322149008 Blow grille 18 9322150004 Propeller fan 19 9603601003 DC fan motor 20 9322553034 Motor bracket assy 21 9323834118 Heat exchanger unit a Hair pin cushion 3 2 Model AOHG24K...

Page 28: ... Compressor 60 61 62 63 64 50 55 56 A B 54 59 51 53 57 b 60 61 a A B 52 58 3 2 Model AOHG24KMTA 02 12 3 Outdoor unit parts list TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 29: ...y valve assy 58 9322459008 Joint pipe Condensor 59 9322461001 Joint pipe 3 way valve 60 9387831016 3 way valve assy 61 9322791009 Suction pipe assy 60 9322824004 S insulator K 61 9323045002 S insulator V 62 9322501004 S insulator H 63 9322529008 S insulator F 64 9322503008 S insulator B 9710542015 ire assy P20 on main PCB Pressure switch a Muffler b Valve bracket 3 2 Model AOHG24KMTA 02 13 3 Outdo...

Page 30: ...anual 1 Cloth tape 1 Operating manual CD ROM 1 Tapping screw large 5 Installation manual 1 Tapping screw small 2 Remote controller 1 all hook bracket 1 Remote controller holder 2 Filter holder 2 Battery 2 Air cleaning filters 1 4 1 Indoor unit 02 14 4 Accessories TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 31: ...it Models AOHG18KMTA and AOHG24KMTA Part name Exterior Q ty Part name Exterior Q ty Installation manual 1 Drain pipe 1 4 2 Outdoor unit 02 15 4 Accessories TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 32: ...Heat exchanger OUTDOOR Compressor Cooling Heating ThD ThR ThPI ThHO ThO ThR ThD ThO ThHO Thermistor Room temperature ThPI Thermistor Pipe temperature Thermistor Discharge temperature Thermistor Outdoor temperature Thermistor Heat exchanger out temperature 5 1 Model AOHG18KMTA 02 16 5 Refrigerant system diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 33: ...O ThHO Muffler Pressure switch Accumulator ThPI ThC Thermistor Discharge temperature Thermistor Outdoor temperature Thermistor Heat exchanger out temperature ThD Thermistor Compressor temperature ThC ThO ThHO Thermistor Room temperature ThR Thermistor Pipe temperature ThPI 5 2 Model AOHG24KMTA 02 17 5 Refrigerant system diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 34: ...6 Wiring diagrams 6 1 Indoor unit Models ASHG18KMTE and ASHG24KMTE 6 1 Indoor unit 02 18 6 iring diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 35: ...6 2 Outdoor unit Model AOHG18KMTA 6 2 Outdoor unit 02 19 6 iring diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 36: ... Model AOHG24KMTA 6 2 Outdoor unit 02 20 6 iring diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 37: ...AWG28 WHITE AWG28 WHITE AWG28 WHITE 10 9 8 7 6 5 4 3 2 1 10 9 8 7 6 5 4 3 2 1 CN9 B10B PASK 1 WHITE CN200 S10B PASK 2 WHITE INDICATOR PCB K18RB 1800HSE D0 DC12V DC5V RED WHITE BLACK YELLOW BLUE RED ORANGE YELLOW PINK BLUE 7 6 5 4 1 5 4 3 2 1 CN5 B5 7 2 3 B XASK 1 A WHITE CN7 B05B PLISK 1 WHITE LOUVER UP DOWN DC FAN MOTOR FM M DC340V DC15V GND_A2 DC12V E1 CN14 B3 5 0 B XASK 1 A WHITE 5 4 3 2 1 EART...

Page 38: ...control voltage input Control power voltage input GND Motor power voltage input Lead wire color Red Black White Yellow Brown 2 7 P650 DC Fan Motor P5 Thermistor Characteristics Thermistor Discharge temp 168 60 k 62 55 k 40 01 k 0 36 V 0 86 V 1 23 V 0 20 30 Thermistor Thermistor Outdoor temp 35 21 k 12 64 k 7 97 k 2 61 V 3 76 V 4 14 V Temperature P1 Thermistor Characteristics 0 20 30 Thermistor The...

Page 39: ... A01 00 SV DC5V EMI FILTER KRFC 13 1 TURN EMI FILTER KRFC 13 2 TURNS EMI FILTER KRFC 13 2 TURNS EMI FILTER TRCB 25 15 12 8 TURNS P5 Thermistor Characteristics Thermistor Discharge temp 168 60 k 62 55 k 40 01 k 0 36 V 0 86 V 1 23 V 0 20 30 Thermistor Thermistor Outdoor temp 35 21 k 12 64 k 7 97 k 2 61 V 3 76 V 4 14 V Temperature P1 Thermistor Characteristics 0 20 30 Thermistor Thermistor Pipe temp ...

Page 40: ...7 3 Model AOHG24KMTA 02 24 7 PC board diagrams TECHNICAL DATA AND PARTS LIST TECHNICAL DATA AND PARTS LIST ...

Page 41: ...3 TROUBLESHOOTING 2022 03 25 SR_CH03_AS070EG_01 ...

Page 42: ...oller error 03 18 2 14 E 41 Room temperature sensor error Indoor unit 03 19 2 15 E 42 Indoor unit heat exchanger sensor error Indoor unit 03 20 2 16 E 51 Indoor unit fan motor error Indoor unit 03 21 2 17 E 62 Outdoor unit main PCB error Outdoor unit 03 22 2 18 E 63 Inverter error Outdoor unit 03 23 2 19 E 64 PFC circuit error Outdoor unit 03 24 2 20 E 65 Trip terminal L error Outdoor unit 03 25 2...

Page 43: ... 03 48 4 1 Compressor 03 48 4 2 Inverter compressor 03 49 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 5 Thermistor resistance values 03 55 5 1 Indoor unit 03 55 5 2 Outdoor unit 03 56 CONTENTS continued ...

Page 44: ......

Page 45: ...ized 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 46: ...us 35 E 39 Indoor unit power supply error for fan motor Indoor unit 3 times 9 times Continuous 39 E 3A Indoor unit communication circuit wired remote controller error 3 times 10 times Continuous 3A E 41 Room temperature sensor error Indoor unit 4 times 1 times Continuous 41 E 42 Indoor unit heat exchanger sensor error Indoor unit 4 times 2 times Continuous 42 E 51 Indoor unit fan motor error Indoo...

Page 47: ... times 7 times Continuous 97 E 99 4 way valve error Outdoor unit 9 times 9 times Continuous 99 E A1 Discharge temperature error Outdoor unit 10 times 1 times Continuous A1 E A3 Compressor temperature error Outdoor unit 10 times 3 times Continuous A3 1 3 Error code table Indoor unit and wired remote controller 03 3 1 Error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 48: ...utdoor unit fan motor failure Check point 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 ...

Page 49: ...03 48 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...

Page 50: ...tor failure Check point 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 manua...

Page 51: ...motor in Service parts informa tion on page 03 48 If indoor unit fan motor is abnormal replace indoor unit fan motor and 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 Seria...

Page 52: ... cable Check Point 1 2 Check ired 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 main PCB Check voltage at CN13 of main PCB terminal 1 3 Power supply to the remote controller Upon correcting the removed connec tor or mis wiring reset the power End C...

Page 53: ...eck the connection Check any loose or removed connection between the main PCB to the AN adapter If there is an abnormal condition correct it by refer to the installation manual or the DESIGN TECHNICAL MANUAL Check the connection condition on the LAN adapter and the main PCB If there is loose con nector open cable or mis wiring Check point 2 Replace the LAN adapter If check point 1 do not improve t...

Page 54: ...nutes after power on Forecast of cause Indoor unit selection is incorrect 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...

Page 55: ... indoor unit Forecast of cause Incorrect indoor 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 main PCB If check point 1 do not improve the symptom replace main PCB of the outdoor unit End 2 6 E 23 Combination...

Page 56: ...heck the wire connection in the remote controller group For installation method refer to in stallation manual If there is an abnormal condition correct it by refer to the installation manual or the DESIGN TECHNICAL MANUAL Check point 2 rong remote controller group setting The given address number by auto setting 00 and the manual set number except 00 are not existing in one remote controller group...

Page 57: ...r remote controller Number of indoor unit or remote controller in remote controller group Indoor unit main PCB failure Check point 1 ire installation rong number of connected indoor unit If there is an abnormal condition correct it by refer to the installation manual or the DESIGN TECHNICAL MANUAL Check point 2 Check indoor unit main PCB Check if main PCB is damaged Change main PCB and check the e...

Page 58: ...Check any shortage or corrosion on PCB Check 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...

Page 59: ...ht 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 unit fan motor Check indoor unit fan motor Refer to indoor unit fan motor in Service part...

Page 60: ...orecast of cause MANUAL AUTO button failure 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 ...

Page 61: ...me 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 connectio...

Page 62: ...Communication PCB defective Indoor unit main PCB defective Check point 1 Check the connection of terminal After turning off the power supply check and correct the followings Indoor unit Check the connection the communication PCB and the main PCB Check Point 2 Replace the communication PCB If the Check point 1 is ok replace the communication PCB Check Point 3 Replace the main PCB If condition is do...

Page 63: ...et power when reinstalling due to removed connector 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 55 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...

Page 64: ...is open Reset power when reinstalling due 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 55 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...

Page 65: ...ate the fan by hand when operation is off Check if fan 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 ...

Page 66: ...ary open voltage drop Main PCB failure Check 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 nea...

Page 67: ...eck point 1 Turn the power on again If no go to Check point 1 2 Error displayed again Check point 2 Check the wiring Connector and wiring connection state check Cable open check Check point 3 Replace main PCB Replace outdoor unit main 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 connectio...

Page 68: ... 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 2 Check connection of Connector C...

Page 69: ...flash Error code E 65 Detective actuator Outdoor unit Main PCB hen 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 20 E 65 Trip terminal L error Outdoor unit 03 25 2 Troubleshooting with error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 70: ...thermistor cable is open Reset power when reinstalling 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 55 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure ...

Page 71: ... thermistor cable is open Reset power when 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 55 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure circuit di...

Page 72: ...mistor cable is open Reset power when reinstalling due to removed connector or incorrect wiring Check point 2 Remove connector and check thermistor resistance value For the outdoor unit heat exchanger thermistor resistance value refer to Ther mistor resistance values on page 03 55 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make su...

Page 73: ...tor cable is open Reset power when reinstalling 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 55 If thermistor is either open or shorted replace it and reset the power Check point 3 Check voltage of main PCB Make sure circuit ...

Page 74: ...onents Upon correcting the removed connector 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 the...

Page 75: ... pressure switch connection state Check connector 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 ...

Page 76: ...er on heat exchanger excessive rise of ambient temperature Main PCB failure Inverter compressor failure lock winding short 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 p...

Page 77: ...onents Main PCB failure Compressor failure Check point 1 Check Noise from Compressor Turn on Power and check operation noise If 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 inf...

Page 78: ...ked 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 outdoor unit fan motor Check outdoor unit fan motor Refer to outdoor unit fan motor in Service parts information on pa...

Page 79: ...ger temperature thermistor Room temperature 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 ...

Page 80: ...t 20 C 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 3 do not improve the symptom replace main PCB End 2 30 E 99 4 way valve error Outdoor unit 03 36 2 Troubleshooting with...

Page 81: ... there is a capillary tube defect Refer to outdoor unit Electronic Expansion Valve EEV or Capillary tube in Service parts infor mation on page 03 48 Check the strainer clogging If EEV Capillary tube or Strainer is defective replace it Check point 3 Check if gas leak or less gas Measure gas pressure if there is a leak correct it If recharging refrigerant make sure to perform vacuuming and recharge ...

Page 82: ... 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 83: ...k gas side of the 3 way 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 48 Check the strainer clogging Check point 3 Check the outdoor unit fan and heat exchanger Check for foreign object at heat exchange...

Page 84: ...Check point 5 Check the refrigerant amount Check the refrigerant leakage End 2 32 E A3 Compressor temperature error Outdoor unit 03 40 2 Troubleshooting with error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 85: ...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 207 to 253 V appears at outdoor unit terminal L N If no go to Check point 1 and Check point 2 Check fuse in fi...

Page 86: ...ausing 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 207 to 253 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 termina...

Page 87: ...ck 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 controller...

Page 88: ...heck 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 the...

Page 89: ...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 45 3 Troubleshooting without error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 90: ...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 91: ... 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 ater leaking 03 47 3 Troubleshooting without error code TROUBLESHOOTING TROUBLESHOOTING ...

Page 92: ...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 93: ...in PCB Loosening or incorrect wiring W400 U Red W401 V hite W402 W Black Main PCB W Compressor Black White Red U V Check point 2 Check the winding resistance Check the winding resistance of each terminal Resistance value 18 model 1 910 Ω at 20 C 24 model 1 916 Ω 8 at 20 C R U C W S V RED WHITE BLACK If the resistance value is 0 Ω or infinite replace the compressor 4 2 Inverter compressor 03 49 4 S...

Page 94: ...Check point 3 Replace the Inverter PCB If check point 1 to 2 do not improve the symptom replace the Inverter PCB 4 2 Inverter compressor 03 50 4 Service parts information TROUBLESHOOTING TROUBLESHOOTING ...

Page 95: ...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 hen valve is closed it has a temp difference between inlet and outlet Pipe ...

Page 96: ...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 97: ...er to below 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 Red DC voltage Vm 2 No function 3 No function 4 Black Earth terminal GND 5 hite Control voltage Vcc 6 Yellow Speed command Vsp 7 Blue Feed back FG 4 4 Indoor unit fan motor 03 53 4 Se...

Page 98: ... 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 main PCB 1 4 5 6 7 Red Black White Yellow Brown FM Pin number wire color Terminal function symbol 1 Red DC voltage Vm 2 No function 3 No function 4 Black Earth terminal GND 5 hite Control voltage Vcc 6 Yellow Speed command Vsp 7 Brown Feed back FG 4 5 Outdoor unit ...

Page 99: ... 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 100: ...0 57 15 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 69 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 56 5 Thermistor resistance va...

Page 101: ... 0 57 15 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 57 5 Thermistor resistance v...

Page 102: ... 3 67 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 103: ...4 CONTROL AND FUNCTIONS 2022 03 25 SR_CH04_AS070EG_01 ...

Page 104: ... operation stopped 04 21 7 Various control 04 22 7 1 Auto restart 04 22 7 2 MANUAL AUTO operation 04 22 7 3 Forced cooling operation 04 23 7 4 10 C HEAT operation 04 23 7 5 ECONOMY operation 04 23 7 6 PO ERFUL operation 04 24 7 7 Fresh air control 04 24 7 8 Compressor preheating 04 24 7 9 External electrical heater control 04 25 7 10 Electronic expansion valve control 04 25 7 11 Prevention to rest...

Page 105: ...8 8 High temperature and high pressure release control heating mode 04 29 CONTENTS continued ...

Page 106: ......

Page 107: ...om temperature is 1 0 C lower than a set temperature the compressor will be stopped hen the room temperature is within the range of 6 0 C to 1 0 C of the setting temperature the rotation number of compressor is controlled within the range shown in the table below Howev er the maximum rotation number is limited in the range shown in the figure below based on the indoor fan mode and the outdoor temp...

Page 108: ...r temperature zone Indoor unit fan mode HIGH MED LOW QUIET ASHG18KMTE A zone 80 50 36 26 B zone 80 50 36 26 C zone 80 50 36 26 D zone 58 42 34 26 E zone 58 42 34 26 F zone 58 42 34 26 ASHG24KMTE A zone 111 46 34 24 B zone 111 46 34 24 C zone 111 46 34 24 D zone 50 39 30 24 E zone 50 39 30 24 F zone 50 39 30 24 1 1 Cooling operation 04 2 1 Rotation number control of compressor CONTROL AND FUNCTIONS...

Page 109: ...er range of compressor Unit rps Model name Minimum frequency Maximum frequency ASHG18KMTE 8 120 ASHG24KMTE 10 130 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 room tempera...

Page 110: ... V 32 56 77 90 99 Time sec 1 2 3 4 5 60 240 280 360 400 Model AOHG24KMTA Rotation number of compressor soon after starting is controlled as below Frequency I Frequency II Frequency III Frequency IV Frequency V Frequency VI Time 1 Time 2 Time 3 Time 4 Time 5 Time 6 Rotation number rps I II III IV V VI 29 52 64 71 89 97 Time sec 1 2 3 4 5 6 60 140 170 200 350 410 1 4 Rotation number of compressor at...

Page 111: ... 0 C 10 C Model name Outdoor temperature zone Limitation of compressor frequency AOHG18KMTA A zone 26 rps B zone 26 rps C zone 26 rps D zone 16 rps E zone 12 rps F zone 18 rps AOHG24KMTA A zone 24 rps B zone 24 rps C zone 24 rps D zone 14 rps E zone 14 rps F zone 22 rps 1 5 Compressor frequency limitation by outdoor temperature 04 5 1 Rotation number control of compressor CONTROL AND FUNCTIONS CON...

Page 112: ...requency AOHG18KMTA A zone 25 rps B zone 25 rps C zone 17 rps D zone 10 rps E zone 1 rps F zone 1 rps AOHG24KMTA A zone 31 rps B zone 31 rps C zone 21 rps D zone 13 rps E zone 1 rps F zone 1 rps 1 5 Compressor frequency limitation by outdoor temperature 04 6 1 Rotation number control of compressor CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 113: ...le 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 Outdoor...

Page 114: ...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 8 2 A...

Page 115: ...de only Fan operation Airflow can be switched in 5 steps such as AUTO QUIET LO MED HIGH while indoor unit fan only runs hen 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 ...

Page 116: ...n 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 HIGH or 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 28 C MED or setting fan mode LOW or setting...

Page 117: ...30 C 37 C 34 C 32 C 28 C POWERFUL LOW LOW LOW 10 C HEAT operation Indoor heat exchanger temperature rises Indoor heat exchanger temperature drops 39 C 34 C AUTO LOW 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 S LOW Off 10 30 60 180 60 180 60 10 30 sec In...

Page 118: ...y Cooling or dry at low outdoor temp Y zone Y zone Z zone F zone G zone S HIGH2 1 100 S HIGH1 1 050 1 100 HIGH 1 050 1 100 10 1 100 9 1 050 1 100 1 050 850 320 270 8 1 050 850 1 050 850 320 270 7 940 680 940 770 270 270 6 890 570 890 630 230 210 5 770 500 770 440 200 180 4 630 470 630 320 200 180 3 510 420 510 320 200 180 2 400 420 400 320 200 180 1 400 420 400 320 200 180 NOTE After defrost contr...

Page 119: ...HIGH2 1 200 S HIGH1 1 180 1 200 HIGH 1 180 1 200 10 1 170 9 1 180 1 170 1 180 1 180 1 180 1 180 8 1 140 1 000 1 140 600 320 220 7 900 860 900 600 320 220 6 800 750 800 450 260 200 5 690 700 690 320 230 180 4 610 610 610 320 230 180 3 550 570 550 320 230 180 2 450 510 450 320 230 180 1 400 470 400 320 230 180 NOTE After defrost control on the heating mode the fan speed is kept higher regardless of ...

Page 120: ...peration airflow will be hori zontal 1 the air direction cannot be adjusted during this period The airflow direction 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 ...

Page 121: ...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 122: ...top of operation Ts 2 C Set 60 min 1 C In the heating operation mode hen 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 temper...

Page 123: ...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 124: ... Stop of operation Ts 2 C Set 60 min 1 C In the heating operation mode hen 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 125: ...oner 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 2...

Page 126: ...Tn10 5 deg Tn 6 C Tn Tnb 2 deg Tn 6 C Tn 17 C Ta 10 C Tn 7 C or Tn 20 C Ta 10 C Integrating defrost Constant monitoring Compressor integrating operation time More than 240 min For long continuous operation More than 213 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 ti...

Page 127: ...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 128: ...oor low noise operation Remote control setting LAN LED setting 7 2 MANUAL AUTO operation hen the wireless remote controller is lost or battery power dissipated this function will work without the remote controller hen MANUAL AUTO button is pressed more than 3 seconds and less than 10 seconds MANUAL AUTO operation starts as shown in the table below To stop operation press the MANUAL AUTO button for...

Page 129: ...operation By performing one of the following action test operation will be canceled Pressing the remote controller START STOP button Pressing FORCED COOLING OPERATION button for 3 seconds 60 minutes passed after starting forced cooling operation NOTE hen HEAT operation is selected on the remote controller during forced cooling operation heating test run will begin in about 3 minutes 7 4 10 C HEAT ...

Page 130: ...ng temperature 0 5 C or Operation time has passed 20 minutes 7 7 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 8 Compressor preheating By preheating the compressor warm airflow is quickly discharged when the operation is started Triggering condition 30...

Page 131: ...ed under the present operating condition based on the table below Operation mode Pulse range Cooling dry mode Between 52 and 480 pulses Heating mode 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 11 Prevention to restart for 3 minutes 3 minutes st hen the compressor fails ...

Page 132: ...000 100 ms Compressor 4 way valve power supply 4 way valve polarity 4 way valve switching Heating mode Cooling mode 7 13 Outdoor unit low noise operation The outdoor unit low noise operation functions by OUTDOOR UNIT LO NOISE button on the re mote controller This operation stops the PFC control and changes the current value Operation mode Current Trigger condition Release condition Cooling Dry mod...

Page 133: ...stopped and the indoor unit LED starts blinking Trigger condition 104 C Rotation number of compressor 20 rps 120 seconds Release condition 101 C Compressor protection temperature 110 C 8 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 trig...

Page 134: ...ondition Release condition Cooling 50 C Ta 7 0 A 6 5 A 46 C Ta 50 C 7 0 A 6 5 A 40 C Ta 46 C 9 5 A 9 0 A 12 C Ta 40 C 12 5 A 12 0 A 2 C Ta 12 C 12 5 A 12 0 A Ta 2 C 12 5 A 12 0 A Heating 17 C Ta 10 5 A 10 0 A 12 C Ta 17 C 13 0 A 12 5 A 5 C Ta 12 C 14 5 A 14 0 A Ta 5 C 15 5 A 15 0 A 8 4 Cooling pressure over rise protection hen the outdoor unit heat exchanger temperature reaches trigger condition b...

Page 135: ...condition 15 C Release condition 10 C 8 8 High temperature and high pressure release control 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 rotation number of compressor is decreased 25 rps 120 sec ...

Page 136: ...8 8 High temperature and high pressure release control heating mode 04 30 8 Various protections CONTROL AND FUNCTIONS CONTROL AND FUNCTIONS ...

Page 137: ...5 FILED WORKING 2022 03 25 SR_CH05_AS070EG_01 ...

Page 138: ...ntroller 05 1 1 2 Custom code setting for wireless remote controller 05 7 2 External input and output 05 8 2 1 External input 05 9 2 2 External output 05 12 2 3 Setting of external input and output 05 14 2 4 Details of control input function 05 15 2 5 Details of control output function 05 19 ...

Page 139: ...e changed if invalid numbers or setting values are selected hen optional wired remote controller is used refer to the installation manual enclosed with the remote controller Entering function setting mode hile pressing the PO ERFUL button and TEMP button simulta neously press the RESET button to enter the function setting mode Function number Setting value Selecting the function number and setting...

Page 140: ...ired 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 saving for cooling 10 60 Switching functions for external output terminal 1 Filter sign Select appropriate intervals for displaying the filter sign on the indoor unit ...

Page 141: ... 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 1 0 C 04 1 5 C 05 2 0 C 06 ...

Page 142: ... C 4 Auto 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 5 Room temperature sensor swit...

Page 143: ...too Function number Setting value Setting description Factory setting 48 00 Both 01 ired 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...

Page 144: ...refer to 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 Setting prohibited 1 1 Function settings by using remote controller 05 6 1 Function settings FIELD WORKING FIELD WORKING ...

Page 145: ...s the START STOP button until only the clock is displayed on the remote controller display 2 Press the MODE button for at least 5 seconds to display the current custom code Initially set to 3 Press the TEMP buttons to change the custom code be tween Match the code on the display to the air condi tioner custom code Initially set to 4 Press the MODE button again to return to the clock display The cu...

Page 146: ...Dry contact Edge CN47 Output Operation status Error status Indoor unit fan operation status External input and output PCB UTY CS Z2 CN313 CN314 Input Operation Stop Dry contact Apply voltage Edge Pulse Forced stop CN313 Forced thermostat off Edge CN310 CN311 CN312 Output Operation status Error status Indoor unit fan operation status NOTE For details of the switching function refer to Setting of ex...

Page 147: ... m Use an external input and output cable with appropriate external dimension depending on the number of cables to be installed The wire connection should be separate from the power cable line Indoor unit Indoor unit functions such as Operation Stop can be done by using indoor unit connectors 1 2 3 CN46 PCB Connected device 1 The switch can be used on the following condition DC 12 V to 24 V 1 mA t...

Page 148: ... VOL side 1 2 3 Input 1 PCB Connected device 1 2 3 Input 2 CN313 CN314 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 S 301 to VOL side 1 2 3 Input 1 Power supply PCB Connected device 2 1 2 3 Input 2 CN313 CN314 1 The switches can be used on the following condition DC 12 V to 24 V 1 mA to 15...

Page 149: ...e edge or pulse can be switched by the DIP switch 2 S 302 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 2 1 External input 05 11 2 External input and output FIELD WORKING FIELD WORKING ...

Page 150: ...ent 50 mA For details refer to Setting of external input and output on page 05 14 When indicator etc are connected directly Example Function setting number 60 is set to 00 1 2 CN47 LED PCB Resistor Connected 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 2 2 Exte...

Page 151: ... set to 1 1 2 CN310 LED 1 Operation status PCB Resistor Connected device 1 2 CN311 LED 2 Error status Resistor 1 2 CN312 LED 3 Indoor unit fan operation status Resistor When connecting with a device equipped with a power supply Example Rotary S on External input and output PCB is set to 1 1 2 Connected device 1 CN310 PCB Connected device Relay Operation status 1 2 Connected device 2 CN311 Error st...

Page 152: ... unit fan status Pulse Operation Stop 2 Edge Forced thermostat off Not available Error status Indoor unit fan operation status Not available 3 to 9 A Setting prohibited B Forced thermostat off Not available Operation status Indoor unit fan operation status Not available C Forced thermostat off Not available Operation status Error status Not available D Setting prohibited NOTES hen the rotary switc...

Page 153: ...ller On Off Indoor unit operation On CN313 In the case of Pulse input Function setting External input and output PCB External input Input signal Command Rotary switch SW302 46 00 1 Pulse External input and output PCB CN313 Pulse Operation CN314 Stop On On Off On Off Remote controller On Off Indoor unit operation CN313 CN314 NOTES The last command has priority The indoor units within the same remot...

Page 154: ...bled On Off Forced stop Normal On Off Remote controller On On Indoor unit operation On CN313 In the case of Pulse input Function setting External input and output PCB External input Input signal Command Rotary switch SW302 46 02 1 Pulse External input and output PCB CN313 Pulse Forced stop R C disabled CN314 Normal R C enabled On Off On Off Remote controller On Off Forced stop Normal CN313 CN314 O...

Page 155: ... CN46 Off On Operation R C enabled On Off Stop R C disabled 1 Edge External input and output PCB CN313 Off On Operation R C enabled On Off Stop R C disabled On CN313 Off On Indoor unit operation Off Remote contoller On On Off In the case of Pulse input Function setting External input and output PCB External input Input signal Command Rotary switch SW302 46 03 1 Pulse External input and output PCB ...

Page 156: ... group Forced thermostat off External input and output PCB External input Input signal Command Rotary switch 2 B C External input and output PCB CN313 Off On Thermostat off On Off Normal operation On Off On Off Compressor Room temp Set temp CN313 2 4 Details of control input function 05 18 2 External input and output FIELD WORKING FIELD WORKING ...

Page 157: ...Off CN310 Indoor unit operation Error status 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 CN310 Off On Error On Off Normal 1 C External input and output PCB CN311 Off On Error On Off Normal The output is on when an error is generated for the indoor unit E...

Page 158: ...PCB CN311 Off On Fan run On Off Fan stop 1 External input and output PCB CN312 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 On Off CN47 On Off CN311 312 Indoor unit 2 5 Details of control output function 05 20 2 External input and outp...

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Fujitsu GENERAL AOHG18KMTA, Service Manual

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