Fujitsu AOUH18LMAS1, Service Manual

Page: 41 / 215

3. Troubleshooting without error code........................................................03-52
3-1. Indoor unit—No power..................................................................................................03-52
3-2. Outdoor unit—No power...............................................................................................03-53
3-3. No operation (Power is on)...........................................................................................03-54
3-4. No cooling/No heating ..................................................................................................03-55
3-5. Abnormal noise.............................................................................................................03-57
3-6. →ater leaking................................................................................................................03-58
3-7. Too warm .....................................................................................................................03-59
3-8. Too cool........................................................................................................................03-63
4. Troubleshooting with error code (For wireless LAN adapter)...............03-67
4-1. E: 18.↓. External communication error between indoor unit and →LAN adapter..........03-67
4-2. →ireless LAN adapter error ..........................................................................................03-68
4-3. Network communication error between wireless LAN router and →LAN adapter.........03-69
4-4. E: 18.↓. Communication error ......................................................................................03-71
4-5. E: 18.↓. →ireless LAN adapter non-energized .............................................................03-73
4-6. →ireless LAN adapter Sleep mode (Indoor unit) ..........................................................03-74
4-7. Mobile app setting method............................................................................................03-75
5. Service parts information.........................................................................03-80
5-1. Compressor..................................................................................................................03-80
5-2. Inverter compressor......................................................................................................03-81
5-3. Outdoor unit Electronic Expansion Valve (EEV) .........................................................03-82
5-4. Indoor unit fan motor ....................................................................................................03-84
5-5. Outdoor unit fan motor ................................................................................................03-85
5-6. Pressure switch ..........................................................................................................03-86
5-7. 4-way valve coil (solenoid coil)/4-way valve ...............................................................03-87
6. Thermistor resistance values...................................................................03-88
6-1. Indoor unit ....................................................................................................................03-88
6-2. Outdoor unit..................................................................................................................03-89
CONTENTS (continued)