LMAS Service Manual
Table Of Contents
- SERVICE MANUAL
- 1. GENERAL INFORMATION
- 2. TECHNICAL DATA AND PARTS LIST
- 3. TROUBLESHOOTING
- 1. Error code
- 1-1. How to check the error memory
- 1-2. How to erase the error memory
- 1-3. Error code table (Indoor unit and wired remote controller)
- 1-4. Error code table (Outdoor unit)
- 1-5. Error code table (Wireless LAN indicator)
- 1-6. Error code table (Mobile app)
- 1-7. Error message for wireless LAN control (Mobile app)
- 2. Troubleshooting with error code
- 2-1. E: 11.X. Serial communication error (Serial reverse transfer error) (Outdoor unit)
- 2-2. E: 11.X. Serial communication error (Serial forward transfer error) (Indoor unit)
- 2-3. E: 12.X. Wired remote controller communication error (Indoor unit)
- 2-4. E: 18.X. External communication error (Indoor unit)
- 2-5. E: 23.X. Combination error (Outdoor unit)
- 2-6. E: 26.X. Address setting error in wired remote controller (Indoor unit)
- 2-7. E: 29.X. Connected unit number error (Indoor unit)
- 2-8. E: 32.X. Indoor unit main PCB error (Indoor unit)
- 2-9. E: 35.X. MANUAL AUTO button error (Indoor unit)
- 2-10. E: 3A.X. Indoor unit communication circuit error (Indoor unit)
- 2-11. E: 41.X. Room temperature sensor error (Indoor unit)
- 2-12. E: 42.X. Indoor unit heat exchanger sensor error (Indoor unit)
- 2-13. E: 51.X. Indoor unit fan motor error (Indoor unit)
- 2-14. E: 58.X. Intake grille error (Indoor unit)
- 2-15. E: 62.X. Outdoor unit main PCB error (Outdoor unit)
- 2-16. E: 63.X. Inverter error (Outdoor unit)
- 2-17. E: 64.X. PFC circuit error (Outdoor unit)
- 2-18. E: 65.X. Trip terminal L error (Outdoor unit)
- 2-19. E: 71.X. Discharge thermistor error (Outdoor unit)
- 2-20. E: 73.X. Heat exchanger (Middle/Outlet) temperature thermistor error (Outdoor unit)
- 2-21. E: 74.X. Outdoor temperature thermistor error (Outdoor unit)
- 2-22. E: 77.X. Heat sink thermistor error (Outdoor unit)
- 2-23. E: 84.X. Current sensor error (Outdoor unit)
- 2-24. E: 86.X. High pressure switch error (Outdoor unit)
- 2-25. E: 86.X. Pressure sensor error (Outdoor unit)
- 2-26. E: 94.X. Trip detection (Outdoor unit)
- 2-27. E: 95.X. Compressor motor control error (Outdoor unit)
- 2-28. E: 97.X. Outdoor unit fan motor error (Outdoor unit)
- 2-29. E: 99.X. 4-way valve error (Outdoor unit)
- 2-30. E: A1.X. Discharge temperature error (Outdoor unit)
- 2-31. E: A5.X. Low pressure error (Outdoor unit)
- 2-32. E: AC.X. Heat sink temperature error (Outdoor unit)
- 3. Troubleshooting without error code
- 4. Troubleshooting with error code (For wireless LAN adapter)
- 4-1. E: 18.X. 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.X. Communication error
- 4-5. E: 18.X. 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
- 1. Error code
- 4. CONTROL AND FUNCTIONS
- 1. Rotation number control of compressor
- 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. MIN. HEAT operation
- 7-5. ECONOMY operation
- 7-6. POWERFUL operation
- 7-7. Fresh air control
- 7-8. Compressor preheating
- 7-9. External electrical heater control
- 7-10. Electronic expansion valve control
- 7-11. Prevention to restart for 3 minutes (3 minutes st)
- 7-12. 4-way valve control
- 7-13. Peak cut operation
- 7-14. Unit status monitoring and the detected value indication
- 8. Various protections
- 5. FILED WORKING
- BACK COVER
1-3. 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.↓. →ired 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 →LAN adapter
1 times 8 times Continuous 18
E: 18.↓. Communication error 1 times 8 times Continuous 18
E: 18.↓. →ireless LAN adapter non-
energized
1 times 8 times Continuous 18
E: 23.↓. Combination error (Outdoor unit) 2 times 3 times Continuous 23
E: 26.↓. Address setting error in wired
remote controller (Indoor unit)
2 times 6 times Continuous 26
E: 29.↓. Connected unit number error
(Indoor unit)
2 times 9 times Continuous 29
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: 3A.↓. Indoor unit communication circuit
error (Indoor unit)
3 times 10 times Continuous 3A
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: 65.↓. Trip terminal L error (Outdoor unit) 6 times 5 times Continuous 65
E: 71.↓. Discharge thermistor error
(Outdoor unit)
7 times 1 times Continuous 71
E: 73.↓. Heat exchanger (Middle/Outlet)
temperature 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: 77.↓. Heat sink thermistor error (Outdoor
unit)
7 times 7 times Continuous 77
E: 84.↓. Current sensor error (Outdoor unit) 8 times 4 times Continuous 84
E: 86.↓. High pressure switch error
(Outdoor unit)
8 times 6 times Continuous 86
E: 86.↓. Pressure sensor error (Outdoor
unit)
8 times 6 times Continuous 86
E: 94.↓. Trip detection (Outdoor unit) 9 times 4 times Continuous 94
1-3. Error code table (Indoor unit and wired remote controller) - (03-2) - 1. Error code
TROUBLESHOOTING
TROUBLESHOOTING