SiUS04-702 Troubleshooting
Service Diagnosis 137
4.10.2 15/18/24 Class
emote Controller
Display
E8
Method of
Malfunction
Detection
An input over-current is detected by checking the input current value being detected by CT with the
compressor running.
Malfunction
Decision
Conditions
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)
Supposed
Causes
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
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