Daikin ZQG71~140L7V1B Service Manual page 180

Troubleshooting by Remote Controller
A
CHECK 4
Continuity check in the power
transistor (IGBT). Is the
continuity normal?
YES
Turn the power ON, and then operate
the test operation.
Error is displayed again?
YES
Check the power supply voltage.
Is instantaneous
voltage drop generated?
NO
CHECK 4 Refer to P.198.
168
NO
NO
Continue the
operation normally.
YES
YES
Replace the outdoor unit PCB.
NO
Go to the other troubleshooting.
Normal operation.
Correct the power supply.
Compressor inspection.
Inspect according to the
diagnosis procedure for
abnormal noise, vibration,
operating status, etc. of the
compressor.
ESIE12-06
Service Diagnosis