Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASUH09KPAS ASUH18KPAS ASUH30KPAS ASUH12KPAS ASUH24KPAS ASUH36KPAS OUTDOOR AOUH09KPAS1 AOUH18KPAS1 AOUH30KPAS1 AOUH12KPAS1 AOUH24KPAS1 AOUH36KPAS1 SR_AS142ES_04 2024.11.26...
Page 2 Mobile” is a trademark of FUJITSU GENERAL LIMITED. ™ Google Play is trademark of Google LLC. ® App Store is a service mark of Apple Inc., registered in the U.S. and other countries. Copyright © 2024 Fujitsu General Limited. All rights reserved.
Page 3: General Information
CONTENTS 1. GENERAL INFORMATION 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. CONTROL AND FUNCTIONS 5. FIELD WORKING...
Page 5 1. GENERAL INFORMATION 2024.11.08 SR_CH01_AS142ES_02...
Page 6 CONTENTS 1. GENERAL INFORMATION 1. Specifications....................01-1 1-1. Indoor unit ........................01-1 1-2. Outdoor unit........................01-7 2. Dimensions....................01-10 2-1. Indoor unit ........................01-10 2-2. Outdoor unit........................01-17...
Page 7 1. Specifications 1-1. Indoor unit ¢ Models: ASUH09KPAS and ASUH12KPAS Wall mounted Type Inverter, Heat pump Model name ASUH09KPAS ASUH12KPAS Power supply intake Outdoor unit Voltage 208/230 System power supply Frequency Available voltage range 187—253 Indoor unit power supply (from outdoor unit) 208/230 k→...
Page 8 Wall mounted Type Inverter, Heat pump Model name ASUH09KPAS ASUH12KPAS Main 1: 8-1/4 × 26-5/16 × 1-1/16 (210 × 668 × 26.6) Dimensions (H × → × D) in (mm) Main 2: 4-7/16 × 26-5/16 × 13/16 (112 × 668 × 20.0) Main 1: 21 Fin pitch Main 2: 23...
Page 9 ¢ Models: ASUH18KPAS and ASUH24KPAS Wall mounted Type Inverter, Heat pump Model name ASUH18KPAS ASUH24KPAS Power supply intake Outdoor unit Voltage 208/230 System power supply Frequency Available voltage range 187—253 Indoor unit power supply (from outdoor unit) 208/230 k→ 5.28 6.45 Rated Btu/h...
Page 10 Wall mounted Type Inverter, Heat pump Model name ASUH18KPAS ASUH24KPAS Material Polystyrene Enclosure →hite Color Approximate color of Munsell N9.25/ 11 × 38-9/16 × 9-7/16 (280 × 980 × 240) Dimensions in (mm) (H × → × D) Gross 12-11/16 × 42-7/16 × 13-5/8 (322 × 1,078 × 346) 28 (12.5) →eight lb (kg)
Page 11 ¢ Models: ASUH30KPAS and ASUH36KPAS Wall mounted Type Inverter, Heat pump Model name ASUH30KPAS ASUH36KPAS Power supply intake Outdoor unit Voltage 208/230 System power supply Frequency Available voltage range 187—253 Indoor unit power supply (from outdoor unit) 208/230 k→ 8.79 9.67 Rated Btu/h...
Page 12 Wall mounted Type Inverter, Heat pump Model name ASUH30KPAS ASUH36KPAS Material Polypropylene + High-density polyethylene Drain hose Tip diameter in (mm) Ø17/32 (Ø13.8) (I.D.), Ø19/32 to 21/32 (Ø15.0 to 16.8) (O.D.) °F (°C) 64 to 90 (18 to 32) Cooling Operation range 80 or less Heating...
Page 13: Outdoor Unit
1-2. Outdoor unit ¢ Models: AOUH09KPAS1 and AOUH12KPAS1 Type Inverter, Heat pump Model name AOUH09KPAS1 AOUH12KPAS1 Power supply 208/230 V~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current Cooling 936 (1,590) 959 (1,630) Airflow rate CFM (m Heating 959 (1,630)
Page 14 ¢ Models: AOUH18KPAS1 and AOUH24KPAS1 Type Inverter, Heat pump Model name AOUH18KPAS1 AOUH24KPAS1 Power supply 208/230 V~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current Cooling 1,218 (2,070) 1,719 (2,920) Airflow rate CFM (m Heating 1,348 (2,290) 1,560 (2,650)
Page 15 ¢ Models: AOUH30KPAS1 and AOUH36KPAS1 Type Inverter, Heat pump Model name AOUH30KPAS1 AOUH36KPAS1 Power supply 208/230 V~ 60 Hz Power supply intake Outdoor unit Available voltage range 187—253 V Starting current 11.3 14.8 Cooling 2,166 (3,680) Airflow rate CFM (m Heating 2,166 (3,680) Type ×...
Page 16 2. Dimensions 2-1. Indoor unit ¢ Models: ASUH09KPAS and ASUH12KPAS Unit: in (mm) 8-3/4 (222) 32-13/16 (834) 1/8 (3) 2-5/8 (67) 12-7/8 (327) 12-7/8 (327) 4-7/16 (113) Outline of indoor unit for pipe inlet Ø 2-9/16 (65) for pipe inlet Ø 2-9/16 (65) 2-7/16 (62) 2-7/16 (62) 1-15/16 (50)
Page 17: Installation Space Requirement
 Installation space requirement Provide sufficient installation space for product safety. CAUTION Do not place any other electrical products or household belongings under the product. Condensa- tion dripping from the product might get them wet, and may cause damage or malfunction to the property.
Page 18 ¢ Models: ASUH18KPAS and ASUH24KPAS Unit: in (mm) 38-9/16 (980) 9-7/16 (240) 3-1/16 16-1/4 (413) 15-3/4 (400) 3-9/16 (77) (90) Outline of indoor unit for pipe inlet for pipe inlet Ø3-1/8 (80) Ø3-1/8 (80) 3-9/16 2-13/16 2-1/16 (52) (91) (72) 2-3/8 (60) 16-15/16 (430) 16-7/16 (418)
Page 19  Installation space requirement Provide sufficient installation space for product safety. CAUTION Do not place any other electrical products or household belongings under the product. Condensa- tion dripping from the product might get them wet, and may cause damage or malfunction to the property.
Page 20 ¢ Models: ASUH30KPAS and ASUH36KPAS Unit: in (mm) 45-1/4 (1,150) 13-6/16 (340) 11 (280) 45-1/4 (1,150) 20-1/2 (520) 20-1/2 (520) 3-9/16 (90) 13/16 (20) Outline of unit 2-1/2 (64) 10/16 (16) 13-6/16 (340) 1-15/16 (50) 1-15/16 (50) 4-1/4 7/16 (11) 2-6/16 (61) 18-7/8 (479) 19-6/8 (502)
Page 21  Installation space requirement Provide sufficient installation space for product safety. CAUTION Do not place any other electrical products or household belongings under the product. Conden- sation dripping from the product might get them wet, and may cause damage or malfunction to the property.
Page 22 ¢ Pipe exit length from the rear Design the system considering the length of the pipes or hose exiting from the rear of the indoor unit. NOTE: Detailed shapes of the indoor unit and the tip of each pipe or hose may vary depending on the model.
Page 23 2-2. Outdoor unit ¢ Models: AOUH09KPAS1 and AOUH12KPAS1 Unit: in (mm) 17-11/16 (450) 4-3/16 (106) 4-M10 hole Pitch of bolts for installation Top view 3/4 (19) 26-1/8 (663) 2-11/16 (68) 1/2 (13) 11-7/16 (290) 1-5/16 (33) 1-3/16 (30) Side view Front view Side view Airflow...
Page 24 ¢ Models: AOUH18KPAS1 and AOUH24KPAS1 Unit: in (mm) 4-M10 hole 22-13/16 (580) 4-5/16 (109) Pitch of bolts for installation Top view 3/4 (19) 31-7/16 (799) 2-11/16 (68) 1/2 (13) 11-7/16 (290) 1-5/16 (33) 1-3/16 (30) Side view Front view Side view Airflow 15-11/16 (399) 7-1/16 (180)
Page 25 ¢ Models: AOUH30KPAS1 and AOUH36KPAS1 Unit: in (mm) 5-13/16 25-9/16 (650) 5-5/8 (147) (143) 3-way valve (Gas) 3-way valve (Liquid) 1-1/4 (48) Liquid Top view Detail A Detail B 12-5/8 (320) 37 (940) 1-9/16 (40) 9/16 (14) 2-Ф7/8 (22) Cable port 2-Ф7/8 (22) Cable port 2-Ф1/8 (28)
Page 26 - (01-20) - 2-2. Outdoor unit 2. Dimensions...
Page 27 2. TECHNICAL DATA AND PARTS LIST 2024.11.08 SR_CH02_AS142ES_02...
Page 28 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: ASUH09KPAS and ASUH12KPAS ..............02-2 2-2. Models: ASUH18KPAS and ASUH24KPAS ..............02-6 2-3. Models: ASUH30KPAS and ASUH36KPAS ..............02-10 3. Outdoor unit parts list................02-14 3-1. Models: AOUH09KPAS1 and AOUH12KPAS1 ............02-14 3-2.
Page 29 • Service parts information and design are subject to change without notice for product improve- ment. • For the latest information of the service parts, refer to our Service Portal. https://fujitsu-general.force.com/portal/ • Precise figure of the service parts listed in this manual may differ from the actual service parts. - (02-1) -...
Page 30: Exterior Parts
2. Indoor unit parts list 2-1. Models: ASUH09KPAS and ASUH12KPAS ¢ Exterior parts - (02-2) - 2-1. Models: ASUH09KPAS and ASUH12KPAS 2. Indoor unit parts list...
Page 31 Item no. Part no. Part name 9388142005 Bracket panel 9387714036 Stepping motor holder assy 9387456004 Stepping motor holder 9901011047 Stepping motor 9387479003 Horizontal louver assy 9384977618 Front panel total assy 9387473018 Air filter 9317250009 Air clean filter assy 9387471007 Louver spring 9387590241 Drain pan total assy 9316177017...
Page 32 ¢ Base, evaporator, and control unit - (02-4) - 2-1. Models: ASUH09KPAS and ASUH12KPAS 2. Indoor unit parts list...
Page 33 Item no. Part no. Part name 9362077057 Evaporator total assy 9387467000 Room thermistor holder 9901160035 Thermistor assy 9387587265 Base assy 9712546264 Main PCB (09 model) 9712546271 Main PCB (12 model) 9901013010 Terminal block 3P 9711146199 Indicator assy 9711147073 Indicator PCB 9384500014 Motor case sub assy 9603768003...
Page 34 2-2. Models: ASUH18KPAS and ASUH24KPAS ¢ Exterior parts - (02-6) - 2-2. Models: ASUH18KPAS and ASUH24KPAS 2. Indoor unit parts list...
Page 35 Item no. Part no. Part name 9388158013 Bracket panel 9383728006 Vertical louver stepping motor assy 9901011023 Stepping motor 9387714012 Gear case assy 9901011016 Stepping motor 9387479010 Horizontal louver assy 9384977670 Front panel total assy 9323340022 Air filter 9317250009 Air clean filter assy 9383730030 Louver spring 9387590142...
Page 36 ¢ Base, evaporator, and control unit - (02-8) - 2-2. Models: ASUH18KPAS and ASUH24KPAS 2. Indoor unit parts list...
Page 37 Item no. Part no. Part name 9383735400 Evaporator total assy 9387467000 Room thermistor holder 9901160035 Thermistor assy 9387587272 Base assy 9712546288 Main PCB (18 model) 9712546295 Main PCB (24 model) 9711146304 Indicator assy 9711147073 Indicator PCB 9901013010 Terminal block 3P 9384500007 Motor case sub assy 9603631000...
Page 38 2-3. Models: ASUH30KPAS and ASUH36KPAS ¢ Exterior parts - (02-10) - 2-3. Models: ASUH30KPAS and ASUH36KPAS 2. Indoor unit parts list...
Page 39 Item no. Part no. Part name 9386990004 Bracket panel 9386958011 Louver U 9386959018 Louver Z 9315212016 Air clean filter assy 9386960014 Air filter 9387072396 Front panel total assy 9362142014 Remote controller total assy 9350319008 Remote controller holder - (02-11) - 2-3.
Page 40 ¢ Base, evaporator, and control unit - (02-12) - 2-3. Models: ASUH30KPAS and ASUH36KPAS 2. Indoor unit parts list...
Page 41 Item no. Part no. Part name 9387064209 Evaporator total assy 9386975001 Rear panel 9901013010 Terminal block 3P 9712546301 Main PCB (30 model) 9712546318 Main PCB (36 model) 9901160011 Thermistor assy 9386988001 Room temp. thermistor holder 9711146229 Indicator assy 9711147035 Indicator PCB 9316601000 Motor cover 9603839017...
Page 42 3. Outdoor unit parts list 3-1. Models: AOUH09KPAS1 and AOUH12KPAS1 ¢ Exterior parts and Chassis - (02-14) - 3-1. Models: AOUH09KPAS1 and AOUH12KPAS1 3. Outdoor unit parts list...
Page 43 Item no. Part no. Part name 9322556103 Top panel assy 9322811004 Protective net assy 9322552310 Cabinet right assy 9322570055 Switch cover assy 9709689967 Main PCB (09 model) 9709689974 Main PCB (12 model) 9900727062 Thermistor assy 9900565176 Thermistor (Outdoor temp.) 9900583019 Reactor assy 9322144003 Drain pipe...
Page 44 ¢ Compressor - (02-16) - 3-1. Models: AOUH09KPAS1 and AOUH12KPAS1 3. Outdoor unit parts list...
Page 45 Item no. Part no. Part name 9970110153 Solenoid 9322392008 4-way valve assy 9970222009 Expansion valve coil 9322403001 Pulse motor valve assy 9322472007 2-way valve assy 9322473004 3-way valve assy 9322423009 Compressor assy (09 model) 9322425003 Compressor assy (12 model) - (02-17) - 3-1.
Page 46 3-2. Models: AOUH18KPAS1 and AOUH24KPAS1 ¢ Exterior parts and Chassis - (02-18) - 3-2. Models: AOUH18KPAS1 and AOUH24KPAS1 3. Outdoor unit parts list...
Page 47 Item no. Part no. Part name 9322556028 Top panel assy 9322811028 Protective net 9900565145 Thermistor (Outdoor temp.) 9712996113 Main PCB (18 model) 9712996120 Main PCB (24 model) 9900935054 Thermistor assy 9900985011 Thermistor (Compressor temp.) 9322570062 Switch cover assy 9384276001 Conduit cover 9322552365 Cabinet right assy 9322144003...
Page 48 ¢ Compressor - (02-20) - 3-2. Models: AOUH18KPAS1 and AOUH24KPAS1 3. Outdoor unit parts list...
Page 49 Item no. Part no. Part name 9810521002 Compressor 9322446015 4-way valve assy 9970194023 Solenoid 9970222016 Expansion valve coil 9322463029 Pulse motor valve assy 9322474001 2-way valve assy 9387831016 3-way valve assy - (02-21) - 3-2. Models: AOUH18KPAS1 and AOUH24KPAS1 3. Outdoor unit parts list...
Page 50 3-3. Models: AOUH30KPAS1 and AOUH36KPAS1 ¢ Exterior parts and chassis 13 13 - (02-22) - 3-3. Models: AOUH30KPAS1 and AOUH36KPAS1 3. Outdoor unit parts list...
Page 51 Item no. Part no. Part name 9383880001 Top panel sub assy 9383779008 Protective net 9900984038 Thermistor (Heat exchanger temp.) 9900727154 Thermistor assy 9900565152 Thermistor (Outdoor temp.) 9383607004 Thermostat holder 9383874000 Right panel sub assy 9384997005 Rear pipe cover 9712996106 Inverter PCB 9901031014 Thermistor (Heat sink temp.) 9900203061...
Page 52 ¢ Compressor - (02-24) - 3-3. Models: AOUH30KPAS1 and AOUH36KPAS1 3. Outdoor unit parts list...
Page 53 Item no. Part no. Part name 9900186029 Pressure switch 9374425648 4-way valve assy 9970194016 Solenoid 9375250249 Accumulator assy 9970209000 Expansion valve coil 9370947373 Expansion valve assy 9379079037 3-way valve assy 9387794007 3-way valve assy 9900985035 Thermistor (Compressor temp.) 9383821004 Compressor - (02-25) - 3-3.
Page 54 4. Accessories 4-1. Indoor unit ¢ Models: ASUH09KPAS, ASUH12KPAS, ASUH18KPAS, and ASUH24KPAS Part name Exterior Part name Exterior Operation manual →all hook bracket Self-tapping screw Installation manual (large) Self-tapping screw Remote controller (small) Remote controller Cloth tape holder Battery Filter holder Installation spacer Air cleaning filters - (02-26) -...
Page 55 ¢ Models: ASUH30KPAS and ASUH36KPAS Part name Exterior Part name Exterior Operation manual Drain hose insulation Installation manual Cloth tape Self-tapping screw →all hook bracket (large) Self-tapping screw Remote controller (small) Battery Air cleaning filters Remote controller Filter holder holder Installation spacer - (02-27) - 4-1.
Page 56: Outdoor Unit
4-2. Outdoor unit ¢ Models: AOUH09KPAS1, AOUH12KPAS1, AOUH18KPAS1, and AOUH24KPAS1 Part name Exterior Part name Exterior Installation manual Cable tie Drain pipe Protection label ¢ Models: AOUH30KPAS1 and AOUH36KPAS1 Part name Exterior Part name Exterior Installation manual Drain pipe Protection label Drain cap - (02-28) - 4-2.
Page 57 5. Optional parts 5-1. Indoor unit ¢ Controllers Exterior Part name Model name Summary Remote controller that provides the functions you need in a sleek design that uniquely transforms itself to blend with any interior. Optional Communication Kit is necessary for installation. NOTE: →hen this remote controller is connected, wireless →ired Remote...
Page 58 NOTES: • Available functions may differ by the remote controller. For details, refer to the operation manu- • →hen using the group controlling system of the →ired Remote Controller, using →LAN Adapter is prohibited. - (02-30) - 5-1. Indoor unit 5.
Page 59 For connection between indoor unit Modbus with UART interface and a Modbus UT↔-VMS↓ Converter open network. Connecting point: CN65 on Main PCB This converter can control Fujitsu General products using a third-party Thermostat thermostat controller. Optional UT↔-TTR↓Z* Converter Communication Kit is necessary for installation.
Page 60 5-2. Outdoor unit Exterior Part name Model name Summary Use to operate the external input and External UT↔-↓→Z↓Z3 output functions of outdoor unit. Connect Kit (for 30-36 model) - (02-32) - 5-2. Outdoor unit 5. Optional parts...
Page 61: Refrigerant System Diagrams
6. Refrigerant system diagrams 6-1. Models: AOUH09KPAS1 and AOUH12KPAS1 Heat exchanger 3-way 2-way (INDOOR) valve valve Muffler 4-way valve Strainer Expansion valve Heat exchanger Strainer (OUTDOOR) Cooling Heating : Thermistor (Discharge temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature) : Thermistor (Room temperature) - (02-33) -...
Page 62 6-2. Models: AOUH18KPAS1 and AOUH24KPAS1 : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature) : Thermistor (Room temperature) - (02-34) - 6-2. Models: AOUH18KPAS1 and AOUH24KPAS1 6. Refrigerant system diagrams...
Page 63 6-3. Models: AOUH30KPAS1 and AOUH36KPAS1 Heat exchanger 3-way 3-way (INDOOR) valve valve Pressure switch 4-way valve Strainer Expansion valve Heat exchanger Strainer (OUTDOOR) : Cooling : Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat exchanger middle temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Pipe temperature)
Page 64 7. Wiring diagrams 7-1. Indoor unit ¢ Models: ASUH09KPAS and ASUH12KPAS - (02-36) - 7-1. Indoor unit 7. →iring diagrams...
Page 65 ¢ Models: ASUH18KPAS, ASUH24KPAS, ASUH30KPAS, and ASUH36KPAS - (02-37) - 7-1. Indoor unit 7. →iring diagrams...
Page 66 7-2. Outdoor unit ¢ Models: AOUH09KPAS1 and AOUH12KPAS1 - (02-38) - 7-2. Outdoor unit 7. →iring diagrams...
Page 67 ¢ Models: AOUH18KPAS1 and AOUH24KPAS1 ¢ Models: AOUH30KPAS1 and AOUH36KPAS1 - (02-39) - 7-2. Outdoor unit 7. →iring diagrams...
Page 68 8. PC board diagrams 8-1. Models: ASUH09KPAS and ASUH12KPAS CONTROL UNIT 07 model: EZ-02429HSE 09 model: EZ-0240PHSE TERMINAL 12 model: EZ-0240RHSE 15 model: EZ-0242AHSE AWG22 BLACK OPTION UNIT (2-WIRE REMOTE CONTROLLER) CN14 OUTDOOR UNIT AWG22 WHITE AC POWER POWER SUPPLY B3 (5.0) B-XASK-1-A (LF) (SN) AWG22 RED WHITE...
Page 69 8-2. Models: ASUH18KPAS and ASUH24KPAS CONTROL UNIT 18 model: EZ-0240SHSE 24 model: EZ-0240THSE TERMINAL OPTION UNIT (2-WIRE REMOTE CONTROLLER) AWG22 BLACK CN14 OUTDOOR UNIT AWG22 WHITE B3 (5.0) B-XASK-1-A (LF) (SN) CN300 POWER SUPPLY AWG22 RED WHITE B03B-XNISK-A-1 (LF) (SN) REMOTE AWG22 RED AWG22 WHITE...
Page 70 8-3. Models: ASUH30KPAS and ASUH36KPAS CONTROL UNIT 30 model: EZ-0240WHSE 36 model: EZ-0240YHSE TERMINAL OPTION UNIT (2-WIRE REMOTE CONTROLLER) AWG22 BLACK CN14 CN300 OUTDOOR UNIT AWG22 WHITE AC POWER REMOTE AWG22 RED REMOTE POWER SUPPLY CN301 B3 (5.0) B-XASK-1-A (LF) (SN) B03B-XNISK-A-1 (LF) (SN) AWG22 WHITE CN13...
Page 71 8-4. Models: AOUH09KPAS1 and AOUH12KPAS1 CONTROL UNIT EZ-024BHUE EMI FILTER Winding Resistance TR-28-16-13FG 2.180 Ω F8C T 28*13*16-C ℉ [20°C]) 3 TURNS EMI FILTER EMI FILTER GRFC-8 GRFC-8 W400 AWG16 RED 1 TURN 1 TURN INDOOR UNIT AWG16 WHITE W401 COMPRESSOR W103 AWG20 BLACK...
Page 72 8-5. Models: AOUH18KPAS1 and AOUH24KPAS1 CONTROL UNIT EZ-024SHUE Winding Resistance EMI FILTER TRM-31-20-15E-WE 1.916 Ω 3 TURNS (68°F [20°C]) EMI FILTER EMI FILTER GRFC-13 W400 AWG16 RED GRFC-13 2 TURNS TO INDOOR UNIT 1 TURN AWG16 WHITE W401 COMPRESSOR W103 AWG20 BLACK W402 AWG16 BLACK...
Page 73 8-6. Models: AOUH30KPAS1 and AOUH36KPAS1 CONTROL UNIT EZ-024PHUE 5 V-1 UL1015 AWG20 GREEN BLACK P700 THERMISTOR (HEAT SINK TEMP.) B03B-XAKK-1-A (LF)(SN) INDOOR POWER SUPPLY/COM. BLACK BLACK TERMINAL P108 EMI FILTER B3P5-VH-B (LF)(SN) EMI FILTER GRFC-8 GRFC-13 BLUE P700 Thermistor Characteristics. 1 TURN 2 TURNS UL1015 AWG14 BLACK...
Page 74 - (02-46) - 8-6. Models: AOUH30KPAS1 and AOUH36KPAS1 8. PC board diagrams...
Page 75: Troubleshooting
3. TROUBLESHOOTING 2024.11.26 SR_CH03_AS142ES_02...
Page 76 CONTENTS 3. TROUBLESHOOTING 1. Error code ....................03-1 1-1. How to check the error memory..................03-1 1-2. How to erase the error memory ..................03-1 1-3. Error code table (Indoor unit and wired remote controller)..........03-2 1-4. Error code table (Outdoor unit) ..................03-4 1-5. Error code table (→ireless LAN indicator)...............03-6 1-6.
Page 77: Table Of Contents
CONTENTS (continued) 2-33. E: A1.↓. Discharge temperature error (Outdoor unit)..........03-62 2-34. E: A3.↓. Compressor temperature error (Outdoor unit) ..........03-64 2-35. E: AC.↓. Heat sink temperature error (Outdoor unit) ..........03-66 3. Troubleshooting without error code............03-67 3-1. Indoor unit—No power....................03-67 3-2. Outdoor unit—No power....................03-68 3-3.
Page 79: Error Code
1. Error code →hen a problem occurs in the system or the connected device, the error content is notified by dis- playing the code. NOTE: This function is only available in a system with indoor or IR receiver units equipped with in- dicator lamps to show the error content.
Page 80 1-3. Error code table (Indoor unit and wired remote controller) The operation, timer, and economy indicators operate according to the error contents. For confirmation of the error contents, refer the flashing pattern as follows. Indoor unit display Wired remote Error contents Operation [ ] Timer [ ] Economy [ ]...
Page 81: E: A1.↓. Discharge Temperature Error (Outdoor Unit)
Indoor unit display Wired remote Error contents Operation [ ] Timer [ ] Economy [ ] controller (Green) (Orange) (Green) display E: 94.↓. Over current error (Outdoor unit) 9 times 4 times Continuous E: 95.↓. Compressor motor control error 9 times 5 times Continuous (Outdoor unit)
Page 82 1-4. Error code table (Outdoor unit) The operation status is determined by the lighting up and blinking of the LED lamp. After check that ERROR LED lamp blinks, press the ENTER button once. NOTE: For the positions of LED lamp and buttons, refer to "Function settings (for 30–36 outdoor units)"...
Page 83 PUMP LOW NOISE PEAK CUT POWER/ DOWN Error contents ERROR MODE E: 73.↓. Outdoor unit heat exchanger ■ ● ■ ■ ○ ○ ● ○ liquid outlet thermistor error (Outdoor unit) E: 74.↓. Outdoor temperature ■ ● ■ ■ ○ ○...
Page 84 1-5. Error code table (Wireless LAN indicator) • →ireless LAN control system diagram example Indoor unit Internet Main PCB Cloud Wireless Mobile app Parts: Outdoor unit router (Smart device) WLAN adapter • Name of parts WLAN adapter Wireless LAN label MAC: SSID: AP- PIN:...
Page 85 1-6. How to check the error code on Mobile app If there is an abnormality on the air conditioning, refer to as follows. →hen the (error button) on the home screen is tapped, error code and error name is displayed. Error button Error code Error name...
Page 86: Error Message
1-7. Error code table (Mobile app) Error message Error contents Error code Serial reverse transmission error at start-up 11.1 E: 11.↓. Serial communication error (Serial Serial reverse transmission error during reverse transfer error) (Outdoor unit) 11.2 operation Serial forward transmission error at start-up 11.3 E: 11.↓.
Page 87 Error message Error contents Error code Outdoor unit heat ex. liquid temp. thermistor E: 73.↓. Outdoor unit heat exchanger liquid 73.3 error outlet thermistor error (Outdoor unit) E: 74.↓. Outdoor temperature thermistor Outside air temp. thermistor error 74.1 error (Outdoor unit) E: 77.↓.
Page 88 1-8. Error message for wireless LAN control (Mobile app) ¢ Error display If there is an abnormality on the wireless control system, refer to error messages as follows. Error message - (03-10) - 1-8. Error message for wireless LAN control (Mobile app) 1.
Page 89: Error Message List
¢ Error message list • Registration error Cause Error Error message code Solution Communication failed. After Communication with the air conditioner failed. checking the following Check the following contents depending on the status of indoor contents, please try again unit wireless LAN indicator lamp or →LAN Adapter LED 2 and after a while.
Page 90 Cause Error Error message code Solution →LAN adapter password is Failed because the smartphone could not connect to the air wrong. Enter it again. conditioner. Check the following contents depending on the status of indoor →hen problems are not unit wireless LAN indicator lamp or →LAN Adapter LED 2 and resolved, there may be other operate again.
Page 91 Cause Error Error message code Solution • The air conditioner you are trying to register is already registered to another account. • Registration failed because the air conditioner cannot connect to the Internet. • Immediately after turning on the power of the air Air conditioner registration conditioner, wait for about 5 minutes before registering it.
Page 92 Cause Error Error message code Solution Registration may have failed because a problem occurred in communication with the server (cloud). 2944 Communication failed. →ait for a while and then operate again. The connected air conditioner ↔our air conditioner does not support Direct Control. 2946 cannot use the Direct control.
Page 93 • Sign in error Cause Error Error message code Solution Various settings could not be completed because Communication failed. After 4010 communication with the server (cloud) failed. checking the following 4410 contents, please try again after Check the following contents and operate again. a while.
Page 94 Cause Error Error message code Solution User information or temperature unit information could not be Loading of user information obtained because communication with the server (cloud) failed. failed. Check the following Check the following contents and operate again. contents. 4420 1.
Page 95 • General error Cause Error Error message code Solution 0100 Communication with the air conditioner failed. 0200 0300 0400 Check the following contents depending on the status of indoor 0500 unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
Page 96 Cause Error Error message code Solution The outdoor unit low noise timer information could not be obtained because communication with the server (cloud) failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
Page 97 Cause Error Error message code Solution The error history information could not be obtained because communication with the server (cloud) failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
Page 98 Cause Error Error message code Solution Air conditioner group setting has not been completed because communication with air conditioner failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
Page 99 Cause Error Error message code Solution Air conditioner group setting has not been completed because communication with air conditioner failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
Page 100 Cause Error Error message code Solution Air conditioner group setting has not been completed because communication with air conditioner failed. Check the following contents depending on the status of indoor unit wireless LAN indicator lamp or →LAN Adapter LED 2 and operate again.
Page 101 Cause Error Error message code Solution Various settings could not be completed because Failed to update the screen. communication with the server (cloud) failed. After checking the following contents, please try again after Check the following contents and operate again. a while.
Page 102 2. Troubleshooting with error code 2-1. E: 11.X. Serial communication error (Serial reverse transfer error) (Outdoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 11 Outdoor unit Refer to "Error code table (Outdoor unit)"...
Page 103 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) GREEN WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3.
Page 104 2-2. E: 11.X. Serial communication error (Serial forward transfer error) (Indoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 11 outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Main PCB Indoor unit...
Page 105 Check point 4. Check serial signal (Forward transfer signal) Check serial signal (Forward transfer signal) GREEN WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 30 V and AC 130 V at outdoor unit terminal 2—3. • If it is abnormal, replace main PCB.
Page 106 2-3. E: 12.X. Wired remote controller communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 2 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 12 outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Indoor unit Main PCB...
Page 107 2-4. E: 18.X. External communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 8 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 18 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 External After receiving a signal from the external input and Detective actuator...
Page 108 2-5. E: 22.X. Indoor unit capacity error (Indoor unit) Operation indicator 2 time flash Timer indicator 2 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 22 outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 →hen the total capacity of the indoor units does not Detective actuator Indoor unit main PCB...
Page 109 2-6. E: 23.X. Combination error (Outdoor unit) Operation indicator 2 time flash Timer indicator 3 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 23 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 The outdoor unit receives the serial signal of applied Detective actuator Indoor unit...
Page 110 2-7. E: 26.X. Address setting error in wired remote controller (Indoor unit) Operation indicator 2 time flash Timer indicator 6 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 26 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 →ired remote controller (2-wire) •...
Page 111 2-8. E: 29.X. Connected unit number error (Indoor unit) Operation indicator 2 time flash Timer indicator 9 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 29 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 →ired remote controller (2-wire) →hen the number of the connected indoor unit exceeds Detective actuator...
Page 112 2-9. E: 32.X. Indoor unit main PCB error (Indoor unit) Operation indicator 3 time flash Timer indicator 2 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 32 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 →hen power is on and there is some below case.
Page 113 2-10. E: 33.X. Indoor unit motor electricity consumption detection error (Indoor unit) Operation indicator 3 time flash Timer indicator 3 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 33 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Indoor unit motor electricity →hen the voltage value or the current value of the motor...
Page 114 2-11. E: 35.X. MANUAL AUTO button error (Indoor unit) Operation indicator 3 time flash Timer indicator 5 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 35 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Indoor unit controller PCB →hen the MANUAL AUTO button becomes on for Detective actuator...
Page 115 2-12. E: 39.X. Indoor unit power supply error for fan motor (Indoor unit) Operation indicator 3 time flash Timer indicator 9 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 39 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 •...
Page 116 2-13. E: 3A.X. Indoor unit communication circuit (wired remote controller) error Operation indicator 3 time flash Timer indicator 10 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 3A Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 →ired remote controller (2-wire) Detect the communication error of microcomputer and...
Page 117 2-14. E: 41.X. Room temperature sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 1 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 41 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Indoor unit main PCB Room temperature thermistor is open or short is Detective actuator...
Page 118 2-15. E: 42.X. Indoor unit heat exchanger sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 2 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 42 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Indoor unit main PCB →hen heat exchanger temperature thermistor open or...
Page 119 2-16. E: 51.X. Indoor unit fan motor error (Indoor unit) Operation indicator 5 time flash Timer indicator 1 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 51 outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 main PCB →hen the actual rotation number of the indoor unit fan...
Page 120 2-17. E: 5U.X. Indoor unit error Operation indicator 5 time flash Timer indicator 15 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 5U Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Check point. Check following error code. E: 11.↓.
Page 121 2-18. E: 62.X. Outdoor unit main PCB error (Outdoor unit) Operation indicator 6 time flash Timer indicator 2 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 62 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Access to EEPROM failed due to some cause after Detective actuator...
Page 122 2-19. E: 64.X. PFC circuit error (Outdoor unit) Operation indicator 6 time flash Timer indicator 4 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 64 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 •...
Page 123 2-20. E: 65.X. IPM error (Outdoor unit) Operation indicator 6 time flash Timer indicator 5 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 65 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Main PCB 1.
Page 124 Check point 4. Check compressor Check compressor. (Refer to inverter compressor in "Service parts information".) Check point 5. Replace main PCB If Check point 1 to 4 do not improve the symptom, change main PCB. - (03-46) - 2-20. E: 65.↓. IPM error (Outdoor unit) 2.
Page 125 2-21. E: 71.X. Discharge thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 1 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 71 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit main PCB →hen discharge pipe temperature thermistor open or Detective actuator...
Page 126 2-22. E: 72.X. Compressor thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 2 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 72 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit main PCB →hen compressor temperature thermistor open or short Detective actuator...
Page 127 2-23. E: 73.X. Outdoor unit heat exchanger liquid outlet thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 3 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 73 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit main PCB →hen heat exchanger temperature thermistor open or...
Page 128 2-24. E: 74.X. Outdoor temperature thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 4 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 74 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit main PCB →hen outdoor temperature thermistor open or short Detective actuator...
Page 129 2-25. E: 77.X. Heat sink thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 7 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 77 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Detective actuator Heat sink temperature thermistor Heat sink temperature thermistor short or open detected...
Page 130 2-26. E: 84.X. Current sensor error (Outdoor unit) Operation indicator 8 time flash Timer indicator 4 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 84 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Main PCB →hen input current sensor has detected 0 A, while inverter compressor is operating at higher than 56 rps,...
Page 131 Check point 1-2. Check external cause at Indoor and Outdoor (Voltage drop or Noise) • Instant drop: Check if there is a large load electric apparatus in the same circuit. • Momentary power failure: Check if there is a defective contact or leak current in the power sup- ply circuit.
Page 132 2-27. E: 86.X. High pressure switch error (Outdoor unit) Operation indicator 8 time flash Timer indicator 6 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 86 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit main PCB →hen pressure switch open is detected in 10 seconds Detective actuator...
Page 133 2-28. E: 86.X. Pressure sensor error (Outdoor unit) Operation indicator 8 time flash Timer indicator 6 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 86 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit main PCB 30 seconds or more after power-on, when pressure sensor detection value detects the condition below...
Page 134 2-29. E: 94.X. Over current error (Outdoor unit) Operation indicator 9 time flash Timer indicator 4 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 94 outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Main PCB Protection stop by over-current generation after inverter compressor start processing completed generated...
Page 135 2-30. E: 95.X. Compressor motor control error (Outdoor unit) Operation indicator 9 time flash Timer indicator 5 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 95 outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Main PCB 1.
Page 136 2-31. E: 97.X. Outdoor unit fan motor error (Outdoor unit) Operation indicator 9 time flash Timer indicator 7 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 97 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Main PCB 1.
Page 137 Check point 4. Check output voltage of main PCB Check outdoor unit circuit diagram and the voltage. (Measure at main PCB side con- nector) NOTE: For details of wiring diagram, refer to "→iring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-36. Read wire DC voltage 280 V ±10% (09/12 models), 240—400 V (18/24 models),...
Page 138 2-32. E: 99.X. 4-way valve error (Outdoor unit) Operation indicator 9 time flash Timer indicator 9 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 99 outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Indoor unit main PCB →hen the indoor heat exchanger temperature is...
Page 139 Check point 3. Check the solenoid coil and 4-way valve NOTE: Refer solenoid coil and 4-way valve in "Service parts information" on page 03-82. • Solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance value is below. –...
Page 140 2-33. E: A1.X. Discharge temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 1 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: A1 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit main PCB Protection stop by discharge temperature ≥...
Page 141 Check point 5. Check the refrigerant amount Check the refrigerant leakage. Check point 6. Replace the main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. - (03-63) - 2-33. E: A1.↓. Discharge temperature error (Outdoor unit) 2.
Page 142 2-34. E: A3.X. Compressor temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 3 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: A3 Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit main PCB Protection stop by compressor temperature ≥...
Page 143 Check point 5. Check the refrigerant amount Check the refrigerant leakage. Check point 6. Replace the main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. - (03-65) - 2-34. E: A3.↓. Compressor temperature error (Outdoor unit) 2.
Page 144 2-35. E: AC.X. Heat sink temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 11 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: AC Outdoor unit Refer to "Error code table (Outdoor unit)" on page 03-4 Outdoor unit inverter PCB Protection stop by heat sink temperature ≥...
Page 145: Troubleshooting Without Error Code
3. Troubleshooting without error code 3-1. Indoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Isn’t the breaker down? • Check loose or removed connection cable. -> If abnormal condition is found, correct it by referring to the installation manual or the DESIGN & TECHNICAL MANUAL.
Page 146: Outdoor Unit-No Power
3-2. Outdoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Is the circuit breaker on or off? • Check loose or removed connection cable. If abnormal condition is found, correct it by referring to the installation manual or the DESIGN & TECHNICAL MANUAL.
Page 147: No Operation (Power Is On)
3-3. No operation (Power is on) Setting/ Connection failure Forecast of cause External cause Electrical components defective Check point 1. Check indoor and outdoor installation condition • Indoor unit: – Check incorrect wiring between indoor unit and remote controller. – Check if there is an open cable connection.
Page 148: No Cooling/No Heating
3-4. No cooling/No heating Indoor unit error Outdoor unit error Forecast of cause Effect by surrounding environment Connection pipe/Connection wire failure Refrigeration cycle failure Check point 1. Check Indoor unit • Does Indoor unit fan run in the HIGH mode? •...
Page 149 NOTES: • Strainer normally does not have temperature difference between inlet 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, re- place the strainer.
Page 150: Abnormal Noise
3-5. Abnormal noise Abnormal installation (indoor unit/outdoor unit) Forecast of cause Fan failure (indoor unit/outdoor unit) Compressor failure (outdoor) Diagnosis method when abnormal noise is occurred Abnormal noise is coming from Outdoor Abnormal noise is coming from Indoor unit. unit. (Check and correct followings) (Check and correct followings) •...
Page 151: Ater Leaking
3-6. Water leaking Erroneous installation Forecast of cause Drain hose failure Diagnosis method when water is spitting Diagnosis method when water leak occurs • Is main unit installed in stable condi- tion? Is the filter clogged? • Is main unit broken or deformed at the time of transportation or maintenance? MPa MPa •...
Page 152: Troubleshooting With Error Code (For Wireless Lan Adapter)
4. Troubleshooting with error code (For wireless LAN adapter) 4-1. E: 18.X. External communication error between indoor unit and wireless LAN adapter Operation indicator 1 time flash Timer indicator 8 time flash Economy indicator Continuous flash Indoor unit Indicator →ireless LAN Flashing slowly indicator Error code...
Page 153: Network Communication Error Between Wireless Lan Router And Wireless Lan Adapter
4-2. Network communication error between wireless LAN router and wireless LAN adapter Operation indicator No indication Timer indicator No indication Economy indicator No indication Indoor unit Indicator →ireless LAN Flashing slowly indicator Error code — Mobile app No indication →ireless LAN router →hen the not connection between wireless LAN adapter and wireless LAN router.
Page 154 Check point 4. Replace wireless LAN adapter. If check point 3 do not improve the symptom, replace the wireless LAN adapter and cancel the reg- istration of air conditioner on the Mobile app. After replacing the adapter, perform the pairing on the Mobile app. For the method of the Mobile app, refer to "Mobile app setting method"...
Page 155: E: 18.↓. Communication Error
4-3. E: 18.X. Communication error Operation indicator 1 time flash Timer indicator 8 time flash Economy indicator Continuous flash Indoor unit Indicator →ireless LAN Flashing slowly indicator Error code E: 18 Mobile app E: 18.1 →ireless LAN router →hen the external communication error between indoor unit and wireless LAN adapter and network →ireless LAN adapter PCB communication error between wireless LAN router and...
Page 156 Check point 4. Check the connection cable Check the connection cable on the wireless LAN router. -> If there is loose connector, open cable or mis-wiring, correct it. Check point 5. Check the connection status. Check the connection status to the Internet and wireless LAN router. ->...
Page 157: E: 18.↓. →Ireless Lan Adapter Non-Energized
4-4. E: 18.X. Wireless LAN adapter non-energized Operation indicator 1 time flash Timer indicator 8 time flash Economy indicator Continuous flash Indoor unit Indicator →ireless LAN No indication indicator Error code E: 18 Mobile app No indication Indoor unit controller PCB →hen the voltage (DC 12 V) does not output from the Detective actuator controller PCB.
Page 158: Mobile App Setting Method
4-5. Mobile app setting method ¢ Air conditioner delete method →hen the wireless LAN adapter is replaced, delete of all air conditioner is necessary on the mobile app. Launch the mobile app. Tap the icon to display the Setting screen. Tap the “Air conditioner editing”.
Page 159 Tap the air conditioner to be deleted. Tap the Delete button. Tap the OK button. Deletion of the air conditioner registered in the mobile app is completed. - (03-81) - 4-5. Mobile app setting method 4. Troubleshooting with error code (For wireless LAN adapter)
Page 160: Service Parts Information
5. Service parts information 5-1. Compressor Diagnosis method of compressor (If outdoor unit LED displays error, refer to troubleshooting) Does not start up Stops soon after starting up Abnormal noise Check if vibration noise by Is there open or loose con- Is there open or loose con- loose bolt or contact noise of nection cable?
Page 161: Inverter Compressor
5-2. Inverter compressor ¢ Models: AOUH09KPAS1, AOUH12KPAS1, AOUH18KPAS1, and AOUH24KPAS1 Check point 1. Check connection • Check terminal connection of compressor (loose or incorrect wiring) W(C) V(S) (BLACK) (WHITE) Main PCB U(R) (RED) • Check terminal connection of main PCB (loose or incorrect wiring) Main PCB W400(U) W401(V) W402(W)
Page 162 Check point 3. Replace inverter PCB If check point 1 to 2 do not improve the symptom, replace main PCB. ¢ Models: AOUH30KPAS1 and AOUH36KPAS1 Check point 1. Check the terminal connection. • Check the following terminal connections of the compressor. (Loosening or incorrect wiring.) S (V) C (W) R (U): Red...
Page 163: Outdoor Unit Electronic Expansion Valve (Eev)
5-3. Outdoor unit Electronic Expansion Valve (EEV) Check point 1. Check connections Check connection of connector. (Loose connector or open cable) NOTE: For details of wiring diagram, refer to "→iring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-36. Check point 2.
Page 164 Check point 6. Check strainer • Strainer normally does not have temperature difference between inlet 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.
Page 165: Indoor Unit Fan Motor
5-4. Indoor unit fan motor Check point 1. Check rotation of fan Rotate 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 resistance of indoor fan motor Refer to below.
Page 166: Outdoor Unit Fan Motor
5-5. Outdoor unit fan motor Check point 1. Check rotation of fan Rotate 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 resistance of outdoor fan motor Refer to below.
Page 167: Reactor Assy
5-6. Reactor assy ¢ Models: AOUH09KPAS1 and AOUH12KPAS1 Check point 1. Appearance check No fissures, breaks, damage, etc. at the body and winding section, terminals section? Check point 2. Electric check • Set the tester to the "Resistance" mode, and check for open/short between both ends of the reactor wire (or connector).
Page 168: 4-Way Valve Coil (Solenoid Coil)/4-Way Valve
5-8. 4-way valve coil (solenoid coil)/4-way valve Check point 1. Check connection • Check the connection of connector P60. BLACK SOLENOID COIL BLACK Check Point 2 : Check solenoid coil Remove P60 from PCB and check the resistance value of coil. Resistance value ≈...
Page 169: Thermistor Resistance Values
6. Thermistor resistance values 6-1. Indoor unit ¢ Room temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) 14.0 (-10.0) 58.25 0.73 23.0 (-5.0) 44.03 0.93 32.0 (0.0) 33.62 1.15 41.0 (5.0) 25.93 1.39 50.0 (10.0) 20.18 1.66 59.0 (15.0) 15.84 1.94 68.0 (20.0)
Page 170: Outdoor Unit
6-2. Outdoor unit ¢ Discharge temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) 1,013.11 0.06 -12.0 (-25.0) 729.09 0.09 -4.0 (-20.0) 531.56 0.12 5.0 (-15.0) 392.31 0.16 14.0 (-10.0) 292.91 0.21 23.0 (-5.0) 221.09 0.28 32.0 (0.0) 168.60 0.36 41.0 (5.0)
Page 171 ¢ Compressor temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) 1,013.11 0.06 -12.0 (-25.0) 729.09 0.09 -4.0 (-20.0) 531.56 0.12 5.0 (-15.0) 392.31 0.16 14.0 (-10.0) 292.91 0.21 23.0 (-5.0) 221.09 0.28 32.0 (0.0) 168.60 0.36 41.0 (5.0) 129.84 0.46 50.0 (10.0)
Page 172 ¢ Heat exchanger temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) 95.57 0.24 -12.0 (-25.0) 68.89 0.32 -4.0 (-20.0) 50.31 0.43 5.0 (-15.0) 37.19 0.57 14.0 (-10.0) 27.81 0.73 23.0 (-5.0) 21.02 0.92 32.0 (0.0) 16.05 1.14 41.0 (5.0) 12.38 1.39...
Page 173 ¢ Outdoor temperature thermistor Temperature °F (°C) Resistance (kΩ) Voltage (V) -22.0 (-30.0) 224.33 0.73 -12.0 (-25.0) 159.71 0.97 -4.0 (-20.0) 115.24 1.25 5.0 (-15.0) 84.21 1.56 14.0 (-10.0) 62.28 1.90 23.0 (-5.0) 46.58 2.26 32.0 (0.0) 35.21 2.61 41.0 (5.0) 26.88 2.94 50.0 (10.0)
Page 174 - (03-96) - 6-2. Outdoor unit 6. Thermistor resistance values...
Page 175: Control And Functions
4. CONTROL AND FUNCTIONS 2024.11.26 SR_CH04_AS142ES_02...
Page 176 CONTENTS 4. CONTROL AND FUNCTIONS 1. Rotation number control of compressor...........04-1 1-1. Cooling operation ......................04-1 1-2. Heating operation ......................04-4 1-3. Dry operation ........................04-5 1-4. Rotation number of compressor at normal start-up ............04-6 1-5. Limitation of compressor rotation number by outdoor temperature.........04-8 2.
Page 177 CONTENTS (continued) 8-5. Compressor temperature protection (for 18/24/30/36 model) ........04-47 8-6. High pressure protection (for 30/36 model) ..............04-47 8-7. Low outdoor temperature protection (for 09/12 model)..........04-47 8-8. High temperature and high pressure release control ............04-48...
Page 179: Rotation Number Control Of Compressor
1. Rotation number control of compressor 1-1. Cooling operation A sensor (room temperature thermistor) built in the indoor unit body will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation rotation number of the compressor. •...
Page 180 • Limit of maximum speed based on outdoor temperature Outdoor temperature rises Outdoor temperature drops 96.8°F A zone 93.2°F (36°C) (34°C) 89.6°F B zone 86.0°F (32°C) (30°C) 69.8°F C zone 66.2°F (21°C) (19°C) 53.6°F D zone 50.0°F (12°C) (10°C) 35.6°F E zone 32.0°F (2°C)
Page 181 Indoor unit fan mode Outdoor Model name temperature MED— MED— HIGH QUIET zone HIGH A zone B zone C zone ASUH09KPAS D zone E zone F zone A zone B zone C zone ASUH12KPAS D zone E zone F zone A zone B zone C zone...
Page 182: Heating Operation
1-2. Heating operation A sensor (room temperature thermistor) built in indoor unit body will usually perceive difference or variation between setting temperature and present room temperature, and controls operation rota- tion number of compressor. • If the room temperature is 11°F (6.0°C) lower than a set temperature, the operation rotation num- ber of compressor will attain to maximum performance.
Page 183: Dry Operation
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 temperature. •...
Page 184: Rotation Number Of Compressor At Normal Start-Up
1-4. Rotation number of compressor at normal start-up ¢ Models: AOUH09KPAS1 and AOUH12KPAS1 Rotation number of compressor soon after starting is controlled as below. Rotation number VII Rotation number VI Rotation number V Rotation number IV Rotation number III Rotation number II Rotation number I Time 1 Time 2...
Page 185 ¢ Models: AOUH30KPAS1 and AOUH36KPAS1 Rotation number of compressor soon after starting is controlled as below. Rotation number VIII Rotation number VII Rotation number VI Rotation number V Rotation number IV Rotation number III Rotation number II Rotation number I Time 1 Time 2 Time 3...
Page 186: Limitation Of Compressor Rotation Number By Outdoor Temperature
1-5. Limitation of compressor rotation number by outdoor temperature ¢ Models: AOUH09KPAS1 and AOUH12KPAS1 The minimum rotation number of compressor is limited by outdoor temperature as below. • Cooling/Dry mode F zone 100.4°F (38°C) E zone 66.2°F (19°C) D zone 50.0°F (10°C) C zone...
Page 187 • Heating mode F zone 66.2°F (19°C) E zone 41.0°F (5°C) D zone 32.0°F (0°C) C zone 5.0°F (-15°C) B zone -13.0°F (-25°C) A zone Unit: rps Limitation of compressor Model name Outdoor temperature zone rotation number A zone B zone AOUH09KPAS1 C zone AOUH12KPAS1...
Page 188 ¢ Models: AOUH18KPAS1 and AOUH24KPAS1 The minimum rotation number of compressor is limited by outdoor temperature as below. • Cooling/Dry mode G zone 100.4°F (38°C) F zone 66.2°F (19°C) E zone 50.0°F (10°C) D zone 32.0°F (0°C) C zone 14.0°F (-10°C) B zone 5.0°F...
Page 189 • Heating mode F zone 66.2°F (19°C) E zone 41.0°F (5°C) D zone 32.0°F (0°C) C zone 5.0°F (-15°C) B zone -13.0°F (-25°C) A zone Unit: rps Limitation of compressor Model name Outdoor temperature zone rotation number A zone B zone AOUH18KPAS1 C zone AOUH24KPAS1...
Page 190 ¢ Models: AOUH30KPAS1 and AOUH36KPAS1 The minimum rotation number of compressor is limited by outdoor temperature as below. • Cooling/Dry mode J zone 125.6°F (52°C) I zone 122.0°F (50°C) H zone 87.8°F (31°C) G zone 69.8°F (21°C) F zone 55.4°F (13°C) E zone 44.6°F...
Page 191 • Heating mode H zone 60.8°F (16°C) G zone 53.6°F (12°C) F zone 44.6°F (7°C) E zone 35.6°F (2°C) D zone 19.4°F (-7°C) C zone 14.0°F (-10°C) 5.0°F B zone (-15°C) A zone Unit: rps Limitation of compressor Model name Outdoor temperature zone rotation number A zone...
Page 192: Auto Changeover Operation
2. Auto changeover operation →hen the air conditioner is set to AUTO mode by remote controller, operation starts in the optimum mode from among heating, cooling, dry and monitoring modes. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set be- tween 64.4°F (18°C) and 86.0°F (30°C) in 1.8°F (1.0°C) steps.
Page 193: Operation Flow Chart
Operation flow chart Start Ts: Setting temperarure Monitor mode Room temp. > Ts+3.6°F(2°C)? Room temp. < Ts-3.6°F(2°C)? Middle zone Auto change over is second or more? Operation mode before the monitor mode is cooling mode? Operation mode of Heating operation Cooling operation outdoor unit: Cooling? Thermostat remains...
Page 194: Fan Control
3. Fan control Tr: Room temperature Ts: Setting temperature 3-1. Indoor fan control ¢ Fan speed Indoor fan speed is defined as below. Speed (rpm) Operation Fan mode mode 30/36 PO→ERFUL 1,270 1,270 1,340 1,480 1,450 HIGH 1,180 1,200 1,180 1,360 1,230 MED—HIGH...
Page 195: Cooling Operation
¢ Cooling operation Switch the airflow AUTO, and indoor fan motor will run according to room temperature, as below. On the other hand, if switched in HIGH—QUIET, indoor motor will run at a constant airflow of COOL operation modes QUIET, LO→, MED, HIGH as shown in “Fan speed” above. Airflow change over (Cooling: Auto) Tr - Ts ≥...
Page 196 ¢ Cool air prevention control (heating mode) The maximum value of the indoor fan speed is set as shown below, based on the detected tempera- ture by the indoor heat exchanger sensor on heating mode. • Normal operation Indoor heat exchanger temperature rises Indoor heat exchanger HIGH...
Page 197 • Powerful operation Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL temperature drops 107.6°F (42°C) 98.6°F HIGH (37°C) 102.2°F (39°C) 93.2°F (34°C) 98.6°F (37°C) 89.6°F Cool air prevention (32°C) or setting fan mode* 86.0°F (30°C) 82.4°F S-LOW (28°C) *: Lower speed is selected. 7 minutes later: Indoor heat exchanger temperature rises...
Page 198: Outdoor Fan Control
3-2. Outdoor fan control ¢ Outdoor fan motor This outdoor unit has a DC fan motor. (Control method is different between AC and DC motors.) ¢ Fan speed  Model: AOUH09KPAS1 Fan speed is defined by outdoor temperature and rotation number of compressor. •...
Page 199  Model: AOUH12KPAS1 Fan speed is defined by outdoor temperature and rotation number of compressor. • Outside air temperature zone selection Outside air Outside air temperature rises temperature drops Y zone 69.8°F ( 21°C) 66.2 °F Z zone (19°C) 53.6°F ( 12°C) 50.0 °F...
Page 200  Model: AOUH18KPAS1 Fan speed is defined by outdoor temperature and rotation number of compressor. • Outside air temperature zone selection Outside air Outside air temperature rises temperature drops Y zone 69.8°F ( 21°C) 66.2 °F Z zone (19°C) 53.6°F ( 12°C) 50.0 °F...
Page 201  Model: AOUH24KPAS1 Fan speed is defined by outdoor temperature and rotation number of compressor. • Outside air temperature zone selection Outside air Outside air temperature rises temperature drops Y zone 69.8°F ( 21°C) 66.2 °F Z zone (19°C) 53.6°F ( 12°C) 50.0 °F...
Page 202  Models: AOUH30KPAS1 and AOUH36KPAS1 Fan speed is defined by outdoor temperature and rotation number of compressor. Unit: rpm Fan step Cooling or dry Heating — — — S-HIGH — • →hen the rotation number of compressor increases, the outdoor fan speed also changes to the higher speed.
Page 203: Louver Control
4. Louver control 4-1. Horizontal louver control ¢ Models: ASUH09KPAS, ASUH12KPAS, ASUH18KPAS, and ASUH24KPAS Each time the button is pressed, the air direction range will change as below: Side view • Remote controller display is not changed. • Vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
Page 204: Vertical Louver Control
¢ Models: ASUH30KPAS and ASUH36KPAS Each time the button is pressed, the air direction range will change as below: Side view • Remote controller display is not changed. • Vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
Page 205: Adjust The Horizontal Louver
4-3. Adjust the horizontal louver ¢ Models: ASUH09KPAS and ASUH12KPAS Move the horizontal louvers to adjust airflow direction you prefer. Knob Vertical louver 4-4. Swing operation • To select up/down airflow swing operation →hen the swing signal is received, the horizontal louver starts to swing. –...
Page 206: Timer Operation Control
5. Timer operation control 5-1. Wireless remote control On/Off timer Program timer Sleep timer Weekly timer ○ ○ ○ — ¢ On/Off timer • Off timer: →hen the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
Page 207: Sleep Timer
¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped auto- matically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. •...
Page 208: Ired Remote Control
5-2. Wired remote control Temperature On/Off timer Program timer Sleep timer Weekly timer Setback Timer ○ ○ ○ ○ ○ ¢ On/Off timer • Off timer: →hen the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
Page 209: Weekly Timer
¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped auto- matically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. •...
Page 210: Temperature Setback Timer
¢ Temperature Setback Timer • The temperature setback timer only changes the set temperature for 7 days, it cannot be used to start or stop air conditioner operation. • The temperature setback timer can be set to operate up to two times per day but only one temperature setting can be used.
Page 211: Defrost Operation Control
6. Defrost operation control Tn: Outdoor unit heat exchanger temperature Ta: Outdoor temperature Tn10: Temperature at 10 minutes after compressor start Tnb: Temperature before 5 minutes Triggering condition • The defrost operation starts when outdoor unit heat exchanger temperature sensor detects the temperature lower than the values shown below.
Page 212 – Integrating defrost (Constant monitoring) More than 240 min. (For More than 215 min. (For Compressor integrating Less than 10 min.* (For long continuous long continuous operation time intermittent operation) operation) operation Count of the compressor Condition Tn ≤ 26.6°F (-3°C) Tn ≤...
Page 213: Defrost Operation In Heating Operation Stopped
6-1. Defrost operation in heating operation stopped If the outdoor unit is frosted when stopping the heating operation, it stops after performing the auto- matic defrosting operation. In this time, if the indoor unit operation lamp flashes slowly (6 sec on/2 sec off), the outdoor unit al- low the heat exchanger to defrost, and then stop.
Page 214: Various Control
7. Various control 7-1. Auto restart →hen the power was interrupted by a power failure etc. during operation, the operation contents at that time are memorized and when the power is recovered, operation is automatically started with the memorized operation contents. Operation contents memorized when the power is interrupted Operation mode Setting temperature...
Page 215: Forced Cooling Operation
7-3. Forced cooling operation The outdoor unit may not operate depending on the room temperature. →hen FORCED COOLING OPERATION button is pressed more than 10 seconds, forced cooling operation starts as shown in the table below. Operation mode Cooling Fan mode HIGH Timer mode Continuous (no timer setting available)
Page 216: Powerful Operation
7-6. POWERFUL operation The PO→ERFUL operation starts by pressing PO→ERFUL button on the remote controller. The indoor unit and outdoor unit operate at maximum power as shown in the table below. ASUH09-24KPAS ASUH30-36KPAS Rotation number of compressor Maximum Fan mode PO→ERFUL Cooling Horizontal louver setting...
Page 217 • Models: AOUH09KPAS1 and AOUH12KPAS1 – Triggering condition • 30 minutes after compressor stopped. • Outdoor unit heat exchanger temperature (Tn) 28.4°F (-2°C) 24.8°F (-4°C) →hen the jumper wire (JM2) is disconnected: 44.6°F (7°C) 41.0°F (5°C) • Models: AOUH18KPAS1 and AOUH24KPAS1 –...
Page 218: External Electrical Heater Control
7-9. External electrical heater control The external electrical heater is operated as below. When the room Ts: Setting temperature temperature rises Heater : Off -1.8°F (Ts -1°C) -5.4°F (Ts -3°C) Heater : On -18.0°F (Ts -10°C) -21.6°F (Ts -12°C) Heater : Off When the room temperature drops NOTES:...
Page 219: Prevention To Restart For 3 Minutes (3 Minutes St)
7-11. Prevention to restart for 3 minutes (3 minutes st) →hen the compressor fails to start for the number of times below, it does not enter operation status for 3 minutes. • Models: AOUH09KPAS1 and AOUH12KPAS1 Retry number Retry set number •...
Page 220: Unit Status Monitoring And The Detected Value Indication
7-14. Unit status monitoring and the detected value indication The wired remote controller can monitor the indoor and outdoor units' status and display the detect- ed result as a relevant ID. For details of the display method, refer to the Chapter of “Display Sensor Values” in the Installation Manual of →ired Remote Controller (Touch Panel).
Page 221 Available Sensor ID Sensor ID Item Unit Remarks 0: Off, 1: On Requested cooling strength On/Off NOTE: The value is output even if 00: — (External output) the function setting or rotary switch is not set. 0: Off, 1: On External heater On/Off (External NOTE: The value is output even if 00: —...
Page 222: Various Protections
8. Various protections 8-1. Discharge gas temperature over-rise prevention control The discharge gas temperature sensor (discharge thermistor: outdoor unit side) detects the dis- charge gas temperature. • →hen the discharge temperature becomes higher than the trigger condition, the rotation number of compressor is decreased as the table below, and it continues to decrease until the discharge tem- perature becomes lower than the trigger condition.
Page 223: Current Release Control
8-3. Current release control The rotation number of compressor is controlled so that the outdoor unit input current does not ex- ceeds current limit value set according to the outdoor temperature. The rotation number of compressor returns according to the operation mode, when the current be- comes lower than the release value.
Page 224: Cooling Pressure Over-Rise Protection (For 09/12/18/24 Model)
¢ Model: AOUH30KPAS1 Operation mode Outdoor temp. (Ta) Trigger condition Release condition 125.6°F (52°C) ≤ Ta 8.0 A 7.5 A 122.0°F (50°C) ≤ Ta < 125.6°F 12.0 A 11.5 A (52°C) Cooling 100.4°F (38°C) ≤ Ta < 122.0°F 14.0 A 13.5 A (50°C) Ta <...
Page 225 8-5. Compressor temperature protection (for 18/24/30/36 model) →hen the compressor temperature sensor detects higher than the trigger condition below, the com- pressor is stopped. →hen the compressor temperature sensor detects the release condition, the pro- tection is released. Trigger condition 226.4°F (108°C) 176.0°F (80°C) Release condition...
Page 226 8-8. High temperature and high pressure release control The compressor is controlled as follows. ¢ Models: AOUH09KPAS1, AOUH12KPAS1, AOUH18KPAS1, and AOUH24KPAS1 Indoor unit heat exchanger Indoor unit heat exchanger temperature rises temperature drops 145.4°F (63°C) 131.0°F (55°C) Zone A 127.4°F (53°C) Zone B 122.0°F (50°C) Zone C...
Page 227: Operation
¢ Models: AOUH30KPAS1 and AOUH36KPAS1 • Cooling mode Indoor unit heat exchanger Indoor unit heat exchanger temperature rises temperature drops 147.2°F (64°C) Zone A 140.0°F (60°C) 136.4°F (58°C) Zone B Zone C Stable zone Zone D Zone Operation Zone A Compressor is stopped.
Page 228 - (04-50) - 8-8. High temperature and high pressure release control 8. Various protections...
Page 229 5. FIELD WORKING 2024.11.26 SR_CH05_AS142ES_02...
Page 230 CONTENTS 5. FIELD WORKING 1. Function settings (for indoor unit).............05-1 1-1. Function settings by using remote controller ..............05-1 1-2. Custom code setting for wireless remote controller ............05-10 2. Function settings (for 30–36 outdoor units) ...........05-11 2-1. Control PCB and switch buttons location..............05-11 2-2.
Page 231: Function Settings (For Indoor Unit)
1. Function settings (for indoor unit) To adjust the functions of this product according to the installation environment, various types of function settings are available. NOTE: Incorrect settings can cause a product malfunction. 1-1. Function settings by using remote controller Some function settings can be changed on the remote controller.
Page 232: Contents Of Function Setting
¢ Contents of function setting Each function setting listed in this section is adjustable in accordance with the installation environ- ment. NOTE: Setting will not be changed if invalid numbers or setting values are selected.  Function setting list Function no. Functions Filter sign 30/31...
Page 233: Factory Setting
2) Room temperature control for indoor unit sensor NOTE: Before performing this setting, refer to Function 95. Depending on the installed environment, correction of the room temperature sensor may be re- quired. Select the appropriate control setting according to the installed environment. The temperature of the room temperature sensor is corrected as follows: Corrected temp.
Page 234: Auto Restart
3) Room temperature control for wired remote controller sensor NOTE: Before performing this setting, refer to Function 95. Depending on the installed environment, correction of the wire remote temperature sensor may be required. Select the appropriate control setting according to the installed environment. To change this setting, set Function 42 to “Both”...
Page 235 6) Remote controller custom code (Only for wireless remote controller) The indoor unit custom code can be changed. Select the appropriate custom code. Function number Setting value Setting description Factory setting ♦ 7) External input control “Operation/Stop” mode or “Forced stop” mode can be selected. Function number Setting value Setting description...
Page 236 10) Switching functions for external output terminal Functions of the external output terminal can be switched. For details, refer to “External input and output”. Function number Setting value Setting description Factory setting Operation status ♦ 01—04 Cooling thermostat On Heating operation Operation/Stop 07—08 Cooling thermostat On...
Page 237 13) Outdoor temperature zone boundary temperature A Setting required if changing of the outdoor temperature setting for heat pump prohibition zone is re- quired when auxiliary heater control by outdoor temperature 1 and 2 are performed on the indoor unit. For details, refer to “External heater output”...
Page 238 16) Heat pump backup setting Enables or disables the heat pump backup operation. Function number Setting value Setting description Factory setting Disable ♦ Enable 17) Emergency heat for external output terminal Enables or disables emergency heat input. Function number Setting value Setting description Factory setting Disable...
Page 239 20) Special cooling operation (For 18-36 model) Stabilizes the cooling operation when the outdoor temperature is low. • Operation mode: Fixed at COOL • Airflow: Fixed at HIGH • Set temperature: 76°F (24°C) to 88°F (30°C) • Outdoor unit operation range: -4°F (-20°C) to 122°F (50°C)* * Suction temperature Function number Setting value...
Page 240: Custom Code Setting For Wireless Remote Controller
1-2. Custom code setting for wireless remote controller To interconnect the air conditioner and the wireless remote controller, assignment of the custom code for the wireless remote controller is required. NOTE: Air conditioner cannot receive a signal if the air conditioner has not been set for the custom code.
Page 241: Function Settings (For 30-36 Outdoor Units)
2. Function settings (for 30–36 outdoor units) Perform appropriate function setting locally according to the installation environment. NOTE: Incorrect settings can cause a product malfunction. CAUTION • Before setting up the switch buttons, discharge the static electricity from your body. •...
Page 242: Switch Buttons And The Functions
¢ Switch buttons and the functions LED lamps S134 S133 S132 S131 S130 Switch buttons LED lamp Function or operation method Lights on while power on. (1) PO→ER/MODE Green Blinks to show the local setting on the outdoor unit or the error code. (2) ERROR Blinks during error operation.
Page 243: Local Setting Procedure
2-2. Local setting procedure NOTE: Before performing the function setting, be sure to stop the operation of the air conditioner. ¢ Low noise mode Press the MODE switch button (S134) for 3 seconds or more to switch to “Local setting mode”. After confirming the LED lamp of PO→ER/MODE blinks 9 times, press the ENTER switch but- ton (S132).
Page 244: Peak Cut Mode
¢ Peak cut mode Press the MODE switch button (S134) for 3 seconds or more to switch to “Local setting mode”. After confirming the LED lamp of PO→ER/MODE blinks 9 times, press the ENTER switch but- ton (S132). PUMP POWER LOW NOISE PEAK CUT DOWN...
Page 245: External Input And Output (For Indoor Unit)
3. External input and output (for indoor unit) External Input and Output PCB Indoor unit PCB CN47 (Ext. out) CN65 (Ext. in/out PCB) CN46 (Ext. in) SW301 SW302 Rotary switch CN314 CN313 CN312 CN311 CN310 CN308 Connecting point Input/Output Function Input select Input signal Operation/Stop...
Page 246: External Input
3-1. External input →ith using external input function, some functions on this product can be controlled from an external device. • “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit. • A twisted pair cable (22 A→G) should be used. Maximum length of cable is 492 ft (150 m). •...
Page 247: External Input And Output Pcb
¢ External Input and Output PCB The indoor unit Operation/Stop can be set by using the input connector on the PCB. • Input select Use either one of these types of connectors according to the application. (Both types of connec- tors cannot be used simultaneously.) –...
Page 248: Input Signal Type
¢ Input signal type • Indoor unit Input signal type is only "Edge". Edge • External Input and Output PCB The input signal type can be selected. Signal type (edge or pulse) can be switched by the DIP switch 2 (S→302) on the External Input and Output PCB.
Page 249: External Output
3-2. External output Use an external output cable with appropriate external dimension, depending on the number of ca- bles to be installed. ¢ Indoor unit • A twisted pair cable (22 A→G)should be used. Maximum length of cable is 82 ft (25 m). •...
Page 250 ¢ External Input and Output PCB • A twisted pair cable (22A→G) should be used. Maximum length of cable is 82 ft (25 m). • Output voltage: High DC 12 V ±2 V, Low 0 V. • Permissible current: 50 mA •...
Page 251: Setting Of External Input And Output
3-3. Setting of external input and output • Indoor unit Input Connection point Function setting number 46 Function Operation/Stop mode 1 (R.C. enabled) (Setting prohibited) CN46 Forced stop mode Operation/Stop mode 2 (R.C. disabled) Output Connection point Function setting number 60 Function Operation/Stop 01 to 04...
Page 252 • External Input and Output PCB Switch setting Ex IN Ex OUT Rotary SW302 CN313 CN314 CN310 CN311 CN312 switch Edge Operation/Stop Not available Indoor unit fan Operation/Stop Error status operation Pulse Operation Stop status Indoor unit fan Forced External heater Not available Error status operation...
Page 253: Details Of Control Input Function
3-4. Details of control input function ¢ Operation/Stop mode 1 • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary SW302 switch Operation — Input of indoor unit CN46 Stop 46-00 Operation External Input and...
Page 254 ¢ Forced stop • In the case of "Edge" input External Input and Output PCB Function External input Input signal Command setting Rotary SW302 switch Forced stop (R.C. disabled) — Input of indoor unit CN46 Normal (R.C. enabled) 46-02 Forced stop (R.C.
Page 255: Operation/Stop Mode
¢ Operation/Stop mode 2 • In the case of “Edge” input External Input and Output PCB Function External input Input signal Command setting Rotary SW302 switch Operation (R.C. enabled) — Input of indoor unit CN46 Stop (R.C. disabled) 46-03 Operation (R.C.
Page 256: Forced Thermostat Off
¢ Forced thermostat off External Input and Output External input Input signal Command Rotary switch Thermostat off External Input and 2, B, C, D CN313 Output PCB Normal operation Thermostat off External Input and 4, 7, 8, A CN313 Output PCB Normal operation CN313 Compressor...
Page 257: Details Of Control Output Function
3-5. Details of control output function ¢ Operation status External Input and Function Output PCB External output Output signal Status setting Rotary switch Operation 60-00 1, 2, 8 Output of indoor unit CN47 60-06 Stop Operation External Input and — 1, B, C, D CN310 Output PCB...
Page 258: Indoor Unit Fan Operation Status
¢ Indoor unit fan operation status External Input and Function Output PCB External output Output signal Status setting Rotary switch Fan run 60-10 Output of indoor unit CN47 Fan stop Fan run External Input and — 2, 3, 7, 8, B, D CN311 Output PCB Fan stop...
Page 259: External Heater Output
¢ External heater output Function setting Indoor unit Control Primary heater Auxiliary heater Control switching external heaters No. 61 Auxiliary heater control 1 Heat pump External device* 61-00 Auxiliary heater control 2 Heat pump External device 61-01 Heat pump prohibition External device None 61-02...
Page 260 • Inappropriate designing and installation of external heater may cause a fire by emitted heat from the external heater. • Fujitsu General Ltd. is not responsible for inappropriate designing or installation of external heat- ing device. - (05-30) - 3-5.
Page 261  Auxiliary equipment control by room temperature Auxiliary equipment control is switchable by room temperature. Auxiliary equipment switching is per- formed for each room temperature divided to following 3 zones. Zone A Ts +0.9°F (0.5 °C) Ts: Setting temperature Ts -0.9°F (-0.5 °C) Tr: Room temperature Zone B Zone C...
Page 262: Auxiliary Heater Control
 Auxiliary heater control 1 Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode Heater off • Error occurred •...
Page 263  Heat pump prohibition control Perform heating by external heater only. Indoor unit is continuous thermostat off. Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
Page 264  Auxiliary heater control by outdoor temperature 1 This control selects heat pump or external heater according to the outdoor temperature. →hen out- door temperature is high, the heating is performed by using heat pump only. Operation Condition Heater on Heater is on as shown in following diagram of heating temperature.
Page 265 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump Heat pump Combination zone only zone prohibition zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
Page 266  Auxiliary heater control by outdoor temperature 2 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Condition Heater on...
Page 267 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump prohibition Combination zone zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
Page 268  Auxiliary heater control by outdoor temperature 3 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Condition Heater on...
Page 269 NOTE: In following operations, compressor will be on in heat pump prohibition zone. • Other than heating • Test run - (05-39) - 3-5. Details of control output function 3. External input and output (for indoor unit)
Page 270  Auxiliary heat pump control • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode Heater off •...
Page 271  Auxiliary heat pump control by outdoor temperature 1 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
Page 272 • Operation status 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Heat pump prohibition Combination zone zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
Page 273  Auxiliary heat pump control by outdoor temperature 2 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
Page 274 • Operation status Heat pump prohibition zone 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
Page 275  Auxiliary heat pump control by outdoor temperature 3 • External heater output Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
Page 276 • Operation status Heat pump prohibition zone 46.4°F (8°C) 42.8°F (6°C) Outdoor temperature (Factory setting) -0.4°F (-18°C) -4°F (-20°C) Combination zone Outdoor temperature zone * Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
Page 277: Heating Thermostat On For Humidifier
¢ Heating thermostat on for humidifier Indoor unit Function External output setting Situation Mode Rotary SW Heating Indoor unit fan Heating thermostat on operation thermostat on no. 60 status 60-05 CN47 Example of 60-06 CN312 individual Not used 60-07 CN311 connection 60-08 CN310...
Page 278: External Input And Output (For 30-36 Outdoor Units)
4. External input and output (for 30–36 outdoor units) →ith using external input and output functions, this product can be operated inter-connectedly with an external device. Connector Input Output Remarks P580 Low noise mode — PA580 Peak cut mode — See external input/output settings for details.
Page 279 ¢ Peak cut mode By performing following on-site work, operation that suppresses the current value can be enabled: The air conditioner is set to the “Peak cut mode” when closing the contact input of a commercial timer or on/off switch to a connector on the control PCB of the outdoor unit. •...
Page 280: External Output
4-2. External output →ith using external output function, some status signals are transmitted to the control PCB, and the related LED lamp indicates the status of this product. ¢ Error status output Signal on air conditioner error status is generated when a malfunction occurs. •...
Page 281: Compressor Status Output
¢ Compressor status output Signal on compressor operation status is generated when the compressor is running. • Circuit diagram example • Output voltage (Vcc): DC 12 Outdoor unit V 50 mA or less control PCB Connected unit (Locally purchased) • *: Make the distance from Example: Connector...

This manual is also suitable for:

Airstage asuh18kpas Airstage asuh30kpas Airstage asuh12kpas Airstage asuh24kpas Airstage asuh36kpas Airstage asuh07kpas ... Show all

Fujitsu AIRSTAGE ASUH09KPAS Service Manual

Quick Links

Troubleshooting

Need help?

Questions and answers

Subscribe to Our Youtube Channel

Related Manuals for Fujitsu AIRSTAGE ASUH09KPAS

Summary of Contents for Fujitsu AIRSTAGE ASUH09KPAS

This manual is also suitable for:

Table of Contents