Altech ATE-053DCIMX05, Техническое и сервисное руководство

Страница: 30 / 32

P0 Compressor top protection against temperature
Off: 105c; On: 90c
The trouble shooting is same with the one of indoor unit P2 protection.
Outdoor unit display
LED STATUS
P3 Compressor current protection
Outdoor unit display
LED STATUS
P4 Compressor drive malfunction drive protection arose
Check the resistance of compressor, normally
U and V is 1 ohm
U and W is 1 ohm
V and W is 1ohm
Turn one indoor unit only, Does the compressor start after
3 minutes?
Does the trouble occur again after compressor
running some time?
No
Yes
No
The compressor is defective
Check the refrigerant circulation volume and pressure
No
The compressor is defective
Yes
If refrigerant circulation volume and pressure is OK, change the outdoor main PCB.