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
• Error message list
– For Android
Registration error
Error message Cause Solution
Wi-Fi must be enabled to set
up new device
The user has disabled Wi-Fi
on the smart device.
Enable the Wi-Fi on the smart device.
We weren’t able to sign you
onto null. Please goto the Wi-
Fi settings and join the
network from there. Return to
the app when you’re done.
The smart device and air
conditioner are connected to
difference Wi-Fi networks
when attempting to register.
Connect the mobile device to the same
network as air conditioner, then retry the
registration.
Could not connect to the
device at this time. Please
reset the device and try
again.
The air conditioner is not
connected to Wi-Fi.
Check if the router connected to the air
conditioner has internet access. (You can
check by connecting the smart device to
the router, then opening the website.) If
there is no access, connect the router to
the internet.
Smart device is not
connected to the same
network as the air
conditioner.
Connect the mobile device to the same
network as the air conditioner, then retry
the registration.
The device failed to connect
with service.
Your internet access may be
down or a firewall may be
blocking requests to the
service.
Check if the router connected to the air
conditioner has internet access. (You can
check by connecting the smart device to
the router, then opening the website.) If
there is no access, connect the router to
the internet.
Could not register the device.
Make sure the device is
ready for registration.
The air conditioner is not
connected to the router.
Enter the Wi-Fi setting on the smart device,
then check if the SSID of the air
conditioner (AP-WF-
) is connected. If
the air conditioner is connected, retry the
registration.
The router the air conditioner
is connected to, has no
internet access.
Check if the router connected to the air
conditioner has internet access. (You can
check by connecting the smart device to
the router, then opening the website.) If
there is no access, connect the router to
the internet.
The air conditioner is already
registered.
If there is a smart device that has already
been registered to the air conditioner,
unregister by using the registered smart
device. Retry the registration with the
smart device you wish to register. If you do
not own the smart device registered to the
air conditioner (lost, property of previous
owner, etc.), ask your maker service to
unregister the smart device. Notify the
MAC address of the WLAN adapter as
written on the Wireless LAN label.
If the problem persists even if the all of the above is conducted, please
contact your dealer or authorized service personnel. When asking for
advice, Notify the MAC address of the WLAN adapter as written on the
Wireless LAN label.
Please ensure your air
conditioner is ready to pair,
and that you have entered its
SSID and password
correctly.
Occurs when pairing is
executed, when the user
erroneously enter the SSID
of the adapter.
Enter the SSID literally. (Uppercase and
lowercase letters also match)
1-4. Error message for wireless LAN control (Mobile app)
- (03-6) - 1. Error code
TROUBLESHOOTING
TROUBLESHOOTING