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. Function settings
To adjust the functions of this product according to the installation environment, various types of
function settings are available.
NOTE: Incorrect settings can cause a product malfunction.
1-1. Function settings by using remote controller
Some function settings can be changed on the remote controller. After confirming the setting proce-
dure and the content of each function setting, select appropriate functions for your installation envi-
ronment.
¢
Setting procedure by using wireless remote controller
The function number and the associated setting value are displayed on the LCD of the remote con-
troller. Follow the instructions written in the local setup procedure supplied with the remote controller,
and select appropriate setting according to the installation environment.
Before connecting the power supply of the indoor unit, reconfirm following items:
• Cover for the electrical enclosure on the outdoor unit is in place.
• There is no wiring mistake.
• Piping air tight test and vacuuming have been performed firmly.
• All the necessary wiring work for outdoor unit has been finished.
After reconfirming the items listed above, connect the power supply of the indoor unit.
NOTES:
• Settings will not be changed if invalid numbers or setting values are selected.
• →hen optional wired remote controller is used, refer to the installation manual enclosed with the
remote controller.
Entering function setting mode:
→hile pressing the PO→ERFUL button and TEMP. (
) button simulta-
neously, press the RESET button to enter the function setting mode.
Function number
Setting value
Selecting the function number and setting value:
1. Press the MIN. HEAT button. TEMP. (
) ( ) buttons to select the
function number. Press theMIN. HEAT button to switch between the
left and right digits.
2. Press the PO→ERFUL button to proceed to value setting. To return
the function number selection, press the PO→ERFUL button again.
3. Press the TEMP. (
) ( ) buttons to select the setting value. To
switch between the left and right digits, press the MIN. HEAT button.
4. Press the MODE button once. Confirm that you hear the beep
sound.
5. Press the START/STOP button to fix the function setting. Confirm
that you hear the beep sound.
6. Press the RESET button to end the function setting mode.
7. After completing the function setting, be sure to disconnect the pow-
er supply and then reconnect it.
CAUTION
After disconnecting the power supply, wait 30 seconds or more before reconnecting it. The function
setting will not become active unless the power supply is disconnected and then reconnected.
1-1. Function settings by using remote controller - (05-1) - 1. Function settings
FIELD
WORKING
FIELD
WORKING