OUT-88
DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting
Multi Liberty
DC Inverter
Protection for compressor overcurrent
P 3
Outline of protection function
• Troubleshooting flowcharts, referred to Protection Codes displayed on Outdoor Unit:
Protection Code on Outdoor Unit
Measure the resistance on compressor’s terminals. Normally, the
detected values must be the following:
Between U(R) and V(S): 1
Ω
.
Between U(R) and W(C): 1
Ω
.
Between V(S) and W(C): 1
Ω
.
Start only one Indoor Unit by remote controller.
After 3-minute delay, does compressor start?
Does error (Error Code display) occur again even after compressor
has operated for a certain time?
Check refrigerant amount inside refrigerant circuit, by measuring
pressure values.
Faulty compressor. Replace it.
YES
Intervention of protection for compressor overcurrent.
YES
NO
NO
NO
The display shows
“
P3”.
Faulty compressor. Replace it.
If refrigerant charge is correct and pressure values are normal,
replace Outdoor Unit’s main PCB.