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
3) Room temperature control for wired remote controller sensor
NOTE: Before performing this setting, refer to Function 95.
Depending on the installed environment, correction of the wire remote temperature sensor may be
required. Select the appropriate control setting according to the installed environment.
To change this setting, set Function 42 to “Both“ (01).
Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
*→hen Function 95-01 (High insulation) is set, the Standard setting "00" will be the same as "No cor-
rection 0.0 °C" (01).
Function number Setting value Setting description
Factory
setting
35
(For cooling)
36
(For heating)
00 Standard setting* ♦
01 No correction 0.0 °F (0.0 °C)
02 -1 °F (-0.5 °C)
More cooling
Less heating
03 -2 °F (-1.0 °C)
04 -3 °F (-1.5 °C)
05 -4 °F (-2.0 °C)
06 -5 °F (-2.5 °C)
07 -6 °F (-3.0 °C)
08 -7 °F (-3.5 °C)
09 -8 °F (-4.0 °C)
10 +1 °F (+0.5 °C)
Less cooling
More heating
11 +2 °F (+1.0 °C)
12 +3 °F (+1.5 °C)
13 +4 °F (+2.0 °C)
14 +5 °F (+2.5 °C)
15 +6 °F (+3.0 °C)
16 +7 °F (+3.5 °C)
17 +8 °F (+4.0 °C)
4) Auto restart
Enables or disables automatic restart after a power interruption.
Function number Setting value Setting description Factory setting
40
00 Enable ♦
01 Disable
NOTE: Auto restart is an emergency function such as for power outage etc. Do not attempt to use
this function in normal operation. Be sure to operate the unit by remote controller or exter-
nal device.
5) Room temperature sensor switching
(Only for wired remote controller)
→hen using the wired remote controller temperature sensor, change the setting to "Both" (01).
Function number Setting value Setting description Factory setting
42
00 Indoor unit ♦
01 Both
00: Sensor on the indoor unit is active.
01: Sensors on both indoor unit and wired remote controller are active.
NOTE: Remote controller sensor must be turned on by using the remote controller.
1-1. Function settings by using remote controller - (05-5) - 1. Function settings
FIELD
WORKING
FIELD
WORKING