Fujitsu ASUG12LZBS Service Manual page 34

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 (Wireless LAN indicator).......................................................................03-3
1-5. Error code table (Mobile App).........................................................................................03-4
1-6. Error message for wireless LAN control (Mobile App) ....................................................03-6
2. Troubleshooting with error code .............................................................03-10
2-1. E: 11.X. Serial communication error (Serial reverse transfer error) (Outdoor unit) .......03-10
2-2. E: 11.X. Serial communication error (Serial forward transfer error) (Indoor unit) ..........03-12
2-3. E: 12.X. Wired remote controller communication error (Indoor unit) .............................03-14
2-4. E: 18.X. External communication error (Indoor unit) .....................................................03-15
2-5. E: 32.X. Indoor unit main PCB error (Indoor unit) .........................................................03-16
2-6. E: 35.X. MANUAL AUTO button error (Indoor unit) ......................................................03-17
2-7. E: 41.X. Room temperature sensor error (Indoor unit)..................................................03-18
2-8. E: 42.X. Indoor unit heat exchanger sensor error (Indoor unit) .....................................03-19
2-9. E: 51.X. Indoor unit fan motor error (Indoor unit) ..........................................................03-20
2-10. E: 58.X. Intake grille error (Indoor unit).......................................................................03-21
2-11. E: 62.X. Outdoor unit main PCB error (Outdoor unit)..................................................03-22
2-12. E: 63.X. Inverter error (Outdoor unit) ..........................................................................03-23
2-13. E: 64.X. PFC circuit error (Outdoor unit).....................................................................03-24
2-14. E: 65.X. IPM error (Outdoor unit)................................................................................03-25
2-15. E: 71.X. Discharge thermistor error (Outdoor unit) .....................................................03-27
2-16. E: 72.X. Compressor thermistor error (Outdoor unit) .................................................03-28
2-17. E: 73.X. Outdoor unit heat exchanger thermistor error (Outdoor unit) ........................03-29
2-18. E: 74.X. Outdoor temperature thermistor error (Outdoor unit) ....................................03-30
2-19. E: 84.X. Current sensor error (Outdoor unit)...............................................................03-31
2-20. E: 94.X. Trip detection (Outdoor unit) ........................................................................03-32
2-21. E: 95.X. Compressor motor control error (Outdoor unit) .............................................03-33
2-22. E: 97.X. Outdoor unit fan motor error (Outdoor unit)...................................................03-34
2-23. E: 99.X. 4-way valve error (Outdoor unit) ...................................................................03-35
2-24. E: A1.X. Discharge temperature error (Outdoor unit)..................................................03-37
2-25. E: A3.X. Compressor temperature error (Outdoor unit) .............................................03-39
3. Troubleshooting without error code........................................................03-41
3-1. Indoor unit—No power..................................................................................................03-41
3-2. Outdoor unit—No power...............................................................................................03-42
3-3. No operation (Power is on) ...........................................................................................03-43
3-4. No cooling/No heating ..................................................................................................03-44
3-5. Abnormal noise.............................................................................................................03-46
3-6. Water leaking................................................................................................................03-47
3-7. Too warm .....................................................................................................................03-48
3-8. Too cool........................................................................................................................03-52
CONTENTS
3. TROUBLESHOOTING