Table of Contents
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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. Error code table (Mobile app) .........................................................................................03-7
1-7. Error message for wireless LAN control (Mobile app).....................................................03-9
2. Troubleshooting with error code .............................................................03-13
2-1. E: 11.↓. Serial communication error (Serial reverse transfer error) (Outdoor unit) .......03-13
2-2. E: 11.↓. Serial communication error (Serial forward transfer error) (Indoor unit) ..........03-15
2-3. E: 12.↓. →ired remote controller communication error (Indoor unit) .............................03-17
2-4. E: 18.↓. External communication error (Indoor unit) .....................................................03-18
2-5. E: 23.↓. Combination error (Outdoor unit) ....................................................................03-19
2-6. E: 26.↓. Address setting error in wired remote controller (Indoor unit) .........................03-20
2-7. E: 29.↓. Connected unit number error (Indoor unit) ......................................................03-21
2-8. E: 32.↓. Indoor unit main PCB error (Indoor unit) .........................................................03-22
2-9. E: 35.↓. MANUAL AUTO button error (Indoor unit) ......................................................03-23
2-10. E: 3A.↓. Indoor unit communication circuit error (Indoor unit).....................................03-24
2-11. E: 41.↓. Room temperature sensor error (Indoor unit)................................................03-26
2-12. E: 42.↓. Indoor unit heat exchanger sensor error (Indoor unit) ...................................03-27
2-13. E: 51.↓. Indoor unit fan motor error (Indoor unit) ........................................................03-28
2-14. E: 58.↓. Intake grille error (Indoor unit).......................................................................03-29
2-15. E: 62.↓. Outdoor unit main PCB error (Outdoor unit)..................................................03-30
2-16. E: 63.↓. Inverter error (Outdoor unit) ..........................................................................03-31
2-17. E: 64.↓. PFC circuit error (Outdoor unit).....................................................................03-32
2-18. E: 65.↓. Trip terminal L error (Outdoor unit) ...............................................................03-33
2-19. E: 71.↓. Discharge thermistor error (Outdoor unit) .....................................................03-34
......................................................................................................................................03-35
2-21. E: 74.↓. Outdoor temperature thermistor error (Outdoor unit) ....................................03-36
2-22. E: 77.↓. Heat sink thermistor error (Outdoor unit).......................................................03-37
2-23. E: 84.↓. Current sensor error (Outdoor unit)...............................................................03-38
2-24. E: 86.↓. High pressure switch error (Outdoor unit) .....................................................03-39
2-25. E: 86.↓. Pressure sensor error (Outdoor unit) ............................................................03-40
2-26. E: 94.↓. Trip detection (Outdoor unit) .........................................................................03-41
2-27. E: 95.↓. Compressor motor control error (Outdoor unit) .............................................03-42
2-28. E: 97.↓. Outdoor unit fan motor error (Outdoor unit)...................................................03-43
2-29. E: 99.↓. 4-way valve error (Outdoor unit) ...................................................................03-45
2-30. E: A1.↓. Discharge temperature error (Outdoor unit)..................................................03-47
2-31. E: A5.↓. Low pressure error (Outdoor unit) ................................................................03-49
2-32. E: AC.↓. Heat sink temperature error (Outdoor unit) ..................................................03-51
CONTENTS
3. TROUBLESHOOTING
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Troubleshooting
