• 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: 23. Combination error (Outdoor unit)" 18.1
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
Room temp. sensor error
"E: 41. Room temperature sensor error
(Indoor unit)"
41.1
Indoor unit Heat Ex. Middle temp. 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
Outdoor unit main PCB model information
error
"E: 62. Outdoor unit main PCB error
(Outdoor unit)"
62.1
62.2
Inverter error "E: 63. Inverter error (Outdoor unit)"
63.1
63.2
PC circuit error "E: 64. PFC circuit error (Outdoor unit)"
64.1
64.3
64.4
64.8
Trip terminal L error "E: 65. Trip terminal L error (Outdoor unit)" 65.3
Discharge temp. sensor error
"E: 71. Discharge thermistor error (Outdoor
unit)"
71.1
Outdoor unit Heat Ex. liquid temp. sensor
error
"E: 73. Outdoor unit heat exchanger
thermistor error (Outdoor unit)"
73.3
Outdoor temp. sensor error
"E: 74. Outdoor temperature thermistor
error (Outdoor unit)"
74.1
Current sensor error "E: 84. Current sensor error (Outdoor unit)" 84.1
Trip detection "E: 94. Over current error (Outdoor unit)" 94.1
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
Discharge temp. error
"E: A1. Discharge temperature error
(Outdoor unit)"
A1.1
1-4. Error code table (Mobile app) - (03-7) - 1. Error code
TROUBLESHOOTING
TROUBLESHOOTING