Forecast of Cause:
1. Indoor unit Controller PCB failure
2. Wireless LAN adapter PCB failure
3. Wiring connection failure
Wireless LAN adapter Non-Energized
Trouble shooting 33
INDOOR UNIT Error Method:
Detective Actuators: Detective details:
Indicate of Display:
Indoor Unit :
Operation lamp: 1 time Flash
Timer lamp : 8 time Flash
W-LAN lamp : On or Off
ERROR CODE : [ 18 ]
Indoor unit Controller PCB
Wireless LAN adapter PCB
When the does not output the DC12 voltage from Controller PCB.
OK
Check Point 1 : Check the connection
Check any loose or removed connection of between the Wireless LAN adapter PCB and Controller PCB
>If there is abnormal condition, correct it.
Check the connection condition on the Controller PCB
>If there is loose connector, open cable or miswiring, correct it.
Check Point 2 : Check the Wireless LAN adapter PCB and Controller PCB
Check Voltage at CN6 (Pin #1=12V, Pin #4=GND) of Controller PCB.
>If it is DC 0V, Controller PCB is failure.
Replace Controller PCB.
>If it is DC12V, Wireless LAN adapter PCB failure.
Replace Wireless LAN adapter and please cancel the air conditioner of the registration on the Mobile App.
After the replace adapter, Please perform the pairing on the App.
> Air conditioning de-registration method, refer to page “02 - 44”
> Pairing method, refer to page “02 - 45”
02-43
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