Service Manual
Table Of Contents
- SERVICE MANUAL
- 1. GENERAL INFORMATION
- 2. TECHNICAL DATA AND PARTS LIST
- 3. TROUBLESHOOTING
- 1. Error code
- 2. Troubleshooting with error code
- 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit)
- 2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit)
- 2-3. E: 12. Wired remote controller communication error (Indoor unit)
- 2-4. E: 18. External communication error (Indoor unit)
- 2-5. E: 32. Indoor unit main PCB error (Indoor unit)
- 2-6. E: 35. MANUAL AUTO button error (Indoor unit)
- 2-7. E: 41. Room temperature sensor error (Indoor unit)
- 2-8. E: 42. Indoor unit heat exchanger sensor error (Indoor unit)
- 2-9. E: 51. Indoor unit fan motor error (Indoor unit)
- 2-10. E: 58. Intake grille error (Indoor unit)
- 2-11. E: 62. Outdoor unit main PCB error (Outdoor unit)
- 2-12. E: 63. Inverter error (Outdoor unit)
- 2-13. E: 64. PFC circuit error (Outdoor unit)
- 2-14. E: 71. Discharge thermistor error (Outdoor unit)
- 2-15. E: 73. Outdoor unit heat exchanger thermistor error (Outdoor unit)
- 2-16. E: 74. Outdoor temperature thermistor error (Outdoor unit)
- 2-17. E: 84. Current sensor error (Outdoor unit)
- 2-18. E: 94. Trip detection (Outdoor unit)
- 2-19. E: 95. Compressor motor control error (Outdoor unit)
- 2-20. E: 97. Outdoor unit fan motor error (Outdoor unit)
- 2-21. E: 99. 4-way valve error (Outdoor unit)
- 2-22. E: A1. Discharge temperature error (Outdoor unit)
- 3. Troubleshooting without error code
- 4. Troubleshooting with error code (For wireless LAN adapter)
- 4-1. E: 18. External communication error between indoor unit and WLAN adapter
- 4-2. Wireless LAN adapter error
- 4-3. Network communication error between wireless LAN router and WLAN adapter
- 4-4. E: 18. Communication error
- 4-5. E: 18. Wireless LAN adapter non-energized
- 4-6. Wireless LAN adapter Sleep mode (Indoor unit)
- 4-7. Mobile app setting method
- 5. Service parts information
- 6. Thermistor resistance values
- 4. CONTROL AND FUNCTIONS
- 1. Compressor frequency control
- 2. Auto changeover operation
- 3. Fan control
- 4. Louver control
- 5. Timer operation control
- 6. Defrost operation control
- 7. Various control
- 7-1. Auto restart
- 7-2. MANUAL AUTO operation
- 7-3. Forced cooling operation
- 7-4. 10 °C HEAT operation
- 7-5. ECONOMY operation
- 7-6. POWERFUL operation
- 7-7. Compressor preheating
- 7-8. Electronic expansion valve control
- 7-9. Prevention to restart for 3 minutes (3 minutes st)
- 7-10. 4-way valve control
- 7-11. Outdoor unit low noise operation
- 8. Various protections
- 5. FILED WORKING
1. Error code
1-1. Error code table (Indoor unit and wired remote controller)
The operation, timer, and economy indicators operate according to the error contents.
For confirmation of the error contents, refer the flashing pattern as follows.
Error contents
Indoor unit display Wired
remote
controller
display
Operation [ ]
(Green)
Timer [ ]
(Orange)
Economy [ ]
(Green)
E: 11. Serial communication error (Serial
reverse transfer error) (Outdoor unit)
1 times 1 times Continuous 11
E: 11. Serial communication error (Serial
forward transfer error) (Indoor unit)
1 times 1 times Continuous 11
E: 12. Wired remote controller
communication error (Indoor unit)
1 times 2 times Continuous 12
E: 18. External communication error (Indoor
unit)
1 times 8 times Continuous 18
E: 18. External communication error
between indoor unit and WLAN adapter
1 times 8 times Continuous 18
E: 18. Communication error 1 times 8 times Continuous 18
E: 18. Wireless LAN adapter non-energized 1 times 8 times Continuous 18
E: 32. Indoor unit main PCB error (Indoor
unit)
3 times 2 times Continuous 32
E: 35. MANUAL AUTO button error (Indoor
unit)
3 times 5 times Continuous 35
E: 41. Room temperature sensor error
(Indoor unit)
4 times 1 times Continuous 41
E: 42. Indoor unit heat exchanger sensor
error (Indoor unit)
4 times 2 times Continuous 42
E: 51. Indoor unit fan motor error (Indoor
unit)
5 times 1 times Continuous 51
E: 58. Intake grille error (Indoor unit) 5 times 8 times Continuous 58
E: 62. Outdoor unit main PCB error
(Outdoor unit)
6 times 2 times Continuous 62
E: 63. Inverter error (Outdoor unit) 6 times 3 times Continuous 63
E: 64. PFC circuit error (Outdoor unit) 6 times 4 times Continuous 64
E: 71. Discharge thermistor error (Outdoor
unit)
7 times 1 times Continuous 71
E: 73. Outdoor unit heat exchanger
thermistor error (Outdoor unit)
7 times 3 times Continuous 73
E: 74. Outdoor temperature thermistor error
(Outdoor unit)
7 times 4 times Continuous 74
E: 84. Current sensor error (Outdoor unit) 8 times 4 times Continuous 84
E: 94. Trip detection (Outdoor unit) 9 times 4 times Continuous 94
E: 95. Compressor motor control error
(Outdoor unit)
9 times 5 times Continuous 95
E: 97. Outdoor unit fan motor error
(Outdoor unit)
9 times 7 times Continuous 97
E: 99. 4-way valve error (Outdoor unit) 9 times 9 times Continuous 99
E: A1. Discharge temperature error
(Outdoor unit)
10 times 1 times Continuous A1
1-1. Error code table (Indoor unit and wired remote controller) - (03-1) - 1. Error code
TROUBLESHOOTING
TROUBLESHOOTING