iKOOL-10/25/50/80 Plus, iKOOL-100
The error code ' F1' means the indoor unit PCB and outdoor unit PCB cannot communicate with each...Error Code: F4 - Internal Fan Fault
The error code 'F4' is indicating either a fault with the indoor fan motor or indoor PCB. To...Error Code: F6/F7/F9 - External Temperature Sensor Fault
All 3 error codes means there is something wrong with the sensors - the difference between the...Error Code: F1/F2/F3 - External Temperature Sensor Fault
The error code 'F1' means outdoor ambient air sensor fault; 'F2' means outdoor coil sensor fault;...Error Code: FC - Compressor Drive Fault
This error is signifying a fault between the compressor and external PCB. To fix the error code...