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) .......................................................................................03-3
2. Troubleshooting with error code ...............................................................03-5
2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit).............03-5
2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit) ...............03-7
2-3. E: 12. Wired remote controller communication error (Indoor unit) ..................................03-9
2-4. E: 22. Indoor unit capacity error (Indoor unit) ...............................................................03-10
2-5. E: 32. Indoor unit main PCB error (Indoor unit) ............................................................03-11
2-6. E: 35. MANUAL AUTO button error (Indoor unit)..........................................................03-12
2-7. E: 41. Room temperature sensor error (Indoor unit).....................................................03-13
2-8. E: 42. Indoor unit heat exchanger sensor error (Indoor unit) ........................................03-14
2-9. E: 44. Human sensor error ...........................................................................................03-15
2-10. E: 51. Indoor unit fan motor error (Indoor unit) ...........................................................03-16
2-11. E: 62. Outdoor unit main PCB error (Outdoor unit).....................................................03-17
2-12. E: 63. Inverter error (Outdoor unit)..............................................................................03-18
2-13. E: 64. PFC circuit error (Outdoor unit) ........................................................................03-19
2-14. E: 65. Trip terminal L error (Outdoor unit)...................................................................03-20
2-15. E: 71. Discharge thermistor error (Outdoor unit).........................................................03-21
2-16. E: 73. Heat exchanger (Middle/Outlet) temperature thermistor error (Outdoor unit) ...03-22
2-17. E: 74. Outdoor temperature thermistor error (Outdoor unit)........................................03-23
2-18. E: 77. Heat sink thermistor error (Outdoor unit) .........................................................03-24
2-19. E: 84. Current sensor error (Outdoor unit) ..................................................................03-25
2-20. E: 86. High pressure switch error (Outdoor unit) ........................................................03-26
2-21. E: 94. Trip detection (Outdoor unit).............................................................................03-27
2-22. E: 95. Compressor motor control error (Outdoor unit) ................................................03-28
2-23. E: 97. Outdoor unit fan motor error (Outdoor unit)......................................................03-29
2-24. E: 99. 4-way valve error (Outdoor unit).......................................................................03-31
2-25. E: A1. Discharge temperature error (Outdoor unit).....................................................03-33
2-26. E: AC. Heat sink temperature error (Outdoor unit) .....................................................03-35
3. Troubleshooting without error code........................................................03-36
3-1. Indoor unit—No power..................................................................................................03-36
3-2. Outdoor unit—No power...............................................................................................03-37
3-3. No operation (Power is on)...........................................................................................03-38
3-4. No cooling/No heating ..................................................................................................03-39
3-5. Abnormal noise.............................................................................................................03-41
3-6. Water leaking................................................................................................................03-42
4. Service parts information .........................................................................03-43
4-1. Compressor..................................................................................................................03-43
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