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 (Wireless LAN indicator).......................................................................03-4
1-5. Error code table (Mobile app) .........................................................................................03-5
1-6. Error message for wireless LAN control (Mobile app).....................................................03-7
2. Troubleshooting with error code .............................................................03-11
2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit)...........03-11
2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit) .............03-13
2-3. E: 12. Wired remote controller communication error (Indoor unit) ................................03-15
2-4. E: 18. External communication error (Indoor unit) ........................................................03-17
2-5. E: 22. Indoor unit capacity error (Indoor unit) ...............................................................03-18
2-6. E: 23. Combination error (Outdoor unit)........................................................................03-19
2-7. E: 26. Address setting error in wired remote controller (Indoor unit).............................03-20
2-8. E: 29. Connected unit number error (Indoor unit) .........................................................03-21
2-9. E: 32. Indoor unit main PCB error (Indoor unit) ............................................................03-22
2-10. E: 33. Indoor unit motor electricity consumption detection error (Indoor unit) .............03-23
2-11. E: 35. MANUAL AUTO button error (Indoor unit)........................................................03-24
2-12. E: 39. Indoor unit power supply error for fan motor (Indoor unit) ................................03-25
2-13. E: 3A. Indoor unit communication circuit (wired remote controller) error ....................03-26
2-14. E: 41. Room temperature sensor error (Indoor unit)...................................................03-27
2-15. E: 42. Indoor unit heat exchanger sensor error (Indoor unit) ......................................03-28
2-16. E: 45. Refrigerant leakage sensor error (Indoor unit)..................................................03-29
2-17. E: 45. Refrigerant leakage sensor deterioration (Indoor unit) .....................................03-30
2-18. E: 51. Indoor unit fan motor error (Indoor unit) ...........................................................03-31
2-19. E: 53. Drain pump error (Indoor unit)..........................................................................03-32
2-20. E: 57. Damper (Open/Close) detection limit switch error ............................................03-33
2-21. E: 57. Damper (Open/Close) simultaneous detection limit switch error (Indoor unit)..03-34
2-22. E: 58. Intake grille error (Indoor unit) ..........................................................................03-35
2-23. E: 5U. Indoor unit error ...............................................................................................03-36
2-24. E: 62. Outdoor unit main PCB error (Outdoor unit).....................................................03-37
2-25. E: 63. Inverter error (Outdoor unit)..............................................................................03-38
2-26. E: 64. PFC circuit error (Outdoor unit) ........................................................................03-39
2-27. E: 65. Trip terminal L error (Outdoor unit)...................................................................03-40
2-28. E: 71. Discharge thermistor error (Outdoor unit).........................................................03-41
2-29. E: 72. Compressor thermistor error (Outdoor unit) ....................................................03-42
2-30. E: 73. Heat exchanger (Middle/Outlet) temperature thermistor error (Outdoor unit) ...03-43
2-31. E: 74. Outdoor temperature thermistor error (Outdoor unit)........................................03-44
2-32. E: 76. 2-way valve thermistor error (Outdoor unit)......................................................03-45
2-33. E: 76. 3-way valve thermistor error (Outdoor unit)......................................................03-46
2-34. E: 84. Current sensor error (Outdoor unit) ..................................................................03-47
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