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
1-4. Error code table (Outdoor unit)
The operation status is determined by the lighting up and blinking of the LED lamp.
After check that ERROR LED lamp blinks, press the ENTER button once.
NOTE: For the positions of LED lamp and buttons, refer to "Function settings (for outdoor unit)" in
Chapter 5. FIELD →ORK.
Error contents
POWER/
MODE
ERROR
PUMP
DOWN
LOW NOISE PEAK CUT
L1 L2 L3 L4 L5 L6
E: 11.↓. Serial communication error
(Serial forward transfer error) (Indoor
unit)
(Occurs immediately after starting
operation)
■
2
● ■
1
■
1
○ ○ ● ●
E: 11.↓. Serial communication error
(Serial forward transfer error) (Indoor
unit)
(Occurs during operation)
■
2
● ■
1
■
1
○ ● ○ ○
E: 12.↓. →ired remote controller
communication error (Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 18.↓. External communication error
(Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 23.↓. Combination error (Outdoor
unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 26.↓. Address setting error in wired
remote controller (Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 29.↓. Connected unit number error
(Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 32.↓. Indoor unit main PCB error
(Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 35.↓. MANUAL AUTO button error
(Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 3A.↓. Indoor unit communication
circuit error (Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 41.↓. Room temperature sensor
error (Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 42.↓. Indoor unit heat exchanger
sensor error (Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 51.↓. Indoor unit fan motor error
(Indoor unit)
■
2
● ■
5
■
15
○ ○ ○ ●
E: 62.↓. Outdoor unit main PCB error
(Outdoor unit)
■
2
● ■
6
■
2
○ ○ ○ ●
E: 63.↓. Inverter error (Outdoor unit)
■
2
● ■
6
■
3
○ ○ ○ ●
E: 65.↓. Trip terminal L error (Outdoor
unit)
■
2
● ■
6
■
5
○ ○ ● ●
E: 71.↓. Discharge thermistor error
(Outdoor unit)
■
2
● ■
7
■
1
○ ○ ○ ●
E: 73.↓. Heat exchanger (Middle/Outlet)
temperature thermistor error (Outdoor
unit)
■
2
● ■
7
■
3
○ ○ ● ○
E: 74.↓. Outdoor temperature
thermistor error (Outdoor unit)
■
2
● ■
7
■
4
○ ○ ○ ●
E: 77.↓. Heat sink thermistor error
(Outdoor unit)
■
2
● ■
7
■
7
○ ○ ○ ●
E: 84.↓. Current sensor error (Outdoor
unit)
■
2
● ■
8
■
4
○ ○ ○ ●
E: 86.↓. High pressure switch error
(Outdoor unit)
■
2
● ■
8
■
6
○ ● ● ○
1-4. Error code table (Outdoor unit) - (03-4) - 1. Error code
TROUBLESHOOTING
TROUBLESHOOTING