Daikin RZQG71~140L7V1B Service Manual page 229

Troubleshooting by Remote Controller
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Is the secondary
current of the inverter higher
than A (∗1) for
each phase?
NO
Turn OFF the power supply.
CHECK 4
Continuity check in the power
transistor (IGBT). Is the
continuity normal?
YES
Note:
1 Secondary electronic thermal detection value
Model
RZQG71
RZQG100-140
CHECK 2 Refer to P.244.
CHECK 4 Refer to P.246.
CHECK 9 Refer to P.250.
218
YES
Is the stop valve opened?
YES
CHECK 2
High pressure is high.
NO
NO
Detection value
Cooling 12.6 or 12.2A × 260 seconds
Heating 14.8A × 260 seconds
Cooling 16.1A × 260 seconds
Heating 22.1A × 260 seconds
NO
Open the stop valve.
YES
Remedy the cause.
Check for excessive refrigerant
charging.
CHECK 9
Replace the outdoor unit PCB
(A1P).
Replace the outdoor unit PCB
(A1P).
Compressor inspection.
Inspect according to the
diagnosis procedure for
abnormal noises, vibration,
operating status, etc. of the
compressor.
ESIE12-06
Service Diagnosis