Daikin FTXS09HVJU Service Manual page 124

Troubleshooting
4.10.2 15/18/24 Class
E8
Remote
Controller
Display
An input overcurrent is detected by checking the input current value being detected by CT with the
Method of
compressor running.
Malfunction
Detection
 The following CT input with the compressor running continues for 2.5 seconds.
Malfunction
Decision
 The system is shut down if the error occurs 16 times.
Conditions
 Clearing condition : Continuous run for about 5 minutes (normal)
 Overcurrent due to compressor failure
Supposed
 Overcurrent due to defective power transistor
Causes
 Overcurrent due to defective inverter main circuit electrolytic capacitor
 Overcurrent due to defective outdoor unit PCB
 Error detection due to outdoor unit PCB
 Overcurrent due to short-circuit
Service Diagnosis
CT input : Above 20 A
SiUS04-904
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