Input Over Current Detection - Daikin Super Multi NX C-Series Service Manual

Troubleshooting

5.14 Input Over Current Detection

E8
Remote
Controller
Display
Outdoor Unit LED
A
Display
Method of An input over-current is detected by checking the input current value being detected by CT with
Malfunction the compressor running.
Detection
" The following CT input with the compressor running continues for 2.5 seconds.
Malfunction
Decision
" The system will be shut down if the error occurs 16 times.
Conditions
" Clearing condition : Continuous run for about 5 minutes (normal)
" Over-current due to compressor failure
Supposed
" Over-current due to defective power transistor
Causes
" 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
184
5 1 1 2 4 3 1 4
CT input : Above 20 A
4
SiE12-411
Service Diagnosis