• Error code
Error message Error contents Error code
Serial communication error
(Serial Reverse Transfer Error)
E: 11. Serial communication error (Serial
reverse transfer error) (Outdoor unit)
11.1
11.2
Serial communication error
(Serial Forward Transfer Error)
E: 11. Serial communication error (Serial
forward transfer error) (Indoor unit)
11.3
11.4
Wired remote controller communication error
E: 12. Wired remote controller
communication error (Indoor unit)
12.1
Combination error
E: 18. External communication error (Indoor
unit)
18.1
Indoor unit capacity error
E: 22. Indoor unit capacity error (Indoor
unit)
22.1
Address setting error in wired remote
controller
E: 26. Address setting error in wired remote
controller (Indoor unit)
26.4
26.5
Connected unit number error
E: 29. Connected unit number error (Indoor
unit)
29.1
Indoor unit PCB model information error
E: 32. Indoor unit main PCB error (Indoor
unit)
32.1
Manual auto switch error
E: 35. MANUAL AUTO button error (Indoor
unit)
35.1
Indoor unit communication circuit error
E: 3A. Indoor unit communication circuit
(wired remote controller) error
3A.1
Room temperature sensor error
E: 41. Room temperature sensor error
(Indoor unit)
41.1
Indoor unit heat exchanger sensor error
E: 42. Indoor unit heat exchanger sensor
error (Indoor unit)
42.2
Indoor unit fan motor error
E: 51. Indoor unit fan motor error (Indoor
unit)
51.1
51.2
Drain pump error E: 53. Drain pump error (Indoor unit) 53.1
Damper error
E: 57. Damper (Open/Close) detection limit
switch error
E: 57. Damper (Open/Close) simultaneous
detection limit switch error (Indoor unit)
57.1
57.2
57.3
Intake grille error E: 58. Intake grille error (Indoor unit) 58.1
Discharge thermistor error
E: 71. Discharge thermistor error (Outdoor
unit)
71.1
Compressor thermistor error
E: 72. Compressor thermistor error
(Outdoor unit)
72.1
Outdoor temperature thermistor error
E: 74. Outdoor temperature thermistor error
(Outdoor unit)
74.1
Outdoor unit operating valve thermistor error
E: 76. 2-way valve thermistor error
(Outdoor unit)
E: 76. 3-way valve thermistor error
(Outdoor unit)
76.1
76.2
Compressor rotor position detection error
E: 95. Compressor motor control error
(Outdoor unit)
95.1
95.3
Outdoor unit fan motor error
E: 97. Outdoor unit fan motor error
(Outdoor unit)
97.3
4-way valve error E: 99. 4-way valve error (Outdoor unit) 99.1
Outdoor unit discharge temperature error
E: A1. Discharge temperature error
(Outdoor unit)
A1.1
Outdoor unit compressor temperature error
E: A3. Compressor temperature error
(Outdoor unit)
A3.1
1-5. Error code table (Mobile app) - (03-6) - 1. Error code
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