SiBE01-829 Troubleshooting
Service Diagnosis 53
4.8 Insufficient Gas
Remote
Controller
Display
U0
Method of
Malfunction
Detection
A gas shortage is detected by checking the indoor unit heat exchanger temperature.
Malfunction
Decision
Conditions
When the compressor operates for 30 min. with the indoor heat exchanger temperature is °C
and then, check for 5 more min. before determining insufficient gas and system down.
Supposed
Causes
Refrigerant shortage (refrigerant leakage)
Poor compression performance of compressor
Indoor heat exchanger thermistor disconnected
Stop valve closed
Cooling Heating
25 20
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