Daikin AT12BV1LS Pocket Manual page 53

Troubleshooting
5.2.13 Input Over Current Detection
Remote
Controller
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
52
E8
An input over-current is detected by checking the input
current value being detected by CT with the compressor
running.
The following CT input with the compressor running
continues for 2.5 seconds.
CT input : Above 20 A
The system will be shut down if the error occurs 16
times.
Clearing condition : Continuous run for about 5
minutes (normal)
Over-current due to compressor failure
Over-current due to defective power transistor
Over-current due to defective inverter main circuit
electrolytic capacitor
Over-current due to defective outdoor unit PCB
Error detection due to outdoor unit PCB
Over-current due to short-circuit
Si10-417
Service Diagnosis