SiBE341027
Troubleshooting by Remote Controller
Service Diagnosis
141
2.24 Inverter Compressor Starting Abnormality
Remote
Controller
Display
L9
Applicable
Models
RQYQ-PY1B
Method of Error
Detection
Error is detected based on the signal waveform of the compressor.
Error Decision
Conditions
Starting the compressor does not complete.
Supposed
Causes
Stop valve is not opened
Defective compressor
Wiring connection error to the compressor
Large pressure difference before startup the compressor
Defective inverter PCB
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
YES
Go on to the next page.
(Starting failure due to aged operation.)
NO
Is it the initial time to
start after installation?
Is a right amount of
refrigerant charged?
Charge a right amount of
refrigerant.
Is the stop valve
opened?
Is the
insulation resistance of
the compressor more
than 100k
Ω
?
NO
YES
Refrigerant
is melting in refrigerant
oil. (The unit is out of
power supply for more
than 6 hours.)
Are the compressor lead
wires disconnected?
YES
NO
YES
NO
NO
YES
YES
NO
Open the stop valve.
Cancel the melting state of
refrigerant.
Cancel the melting state of
refrigerant.
Fix the compressor lead wire.
Correct the wiring then supply the
power to restart.
