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DUAL, TRIPLE, POKER DC Inverter : 3. Outdoor Unitis & Troubleshooting
Multi Liberty
DC Inverter
Outline of malfunction
OPERATION
TIMER
DEF./FAN
Flashing
OFF
ON
ALARM
ON
• Troubleshooting by LED indicators of Multi Liberty (HTFU, HSFU, HRBU) X Indoor Units
YES
YES
NO
NO
NO
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.
If refrigerant charge is correct and pressure values are normal,
replace Outdoor Unit’s main PCB.
Compressor faulty. Replace it.
Compressor faulty. Replace it.
Intervention of protection for compressor’s overcurrent.