OUT-48
DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting
Multi Liberty
DC Inverter
P 3
Protection for compressor overcurrent
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-minutes’ delay, does compressor start?
Does anomaly persist (display of Error Code) even if compressor has
been running for a certain time?
Check refrigerant amount in the refrigerant circuit, by measuring
pressure values.
YES
Intervention of protection for compressor’s overcurrent.
YES
NO
NO
NO
Protection Code on Indoor Unit
Outline of Protection function
• Troubleshooting for Protection Codes shown on Display of Multi Liberty of HKEU X Indoor Units
If refrigerant charge is correct and pressure values are normal,
replace Outdoor Unit’s main PCB.
Compressor faulty. Replace it.
Compressor faulty. Replace it.