Daikin ZQG71~140L7V1B Service Manual page 184

Troubleshooting by Remote Controller
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Check the installation conditions.
Is the stop valve open?
YES
Is the difference
between high and low pressure
before startup not more
than 0.2MPa?
YES
Turn OFF the power supply, and then
disconnect the connection between
the compressor and inverter.
CHECK 4
Continuity check in the power
transistor (IGBT). Is the
continuity normal?
YES
The
compressor is grounded and
short circuited.
NO
CHECK 4 Refer to P.198.
172
NO
NO
NO
YES
ESIE12-06
Open the stop valve.
Insufficient pressure
equalization.
Check refrigerant system.
Replace the outdoor unit PCB
(A1P).
Replace the compressor.
Compressor inspection.
Inspect according to the
diagnosis procedure for
abnormal noises, vibration,
operating status, etc. of the
compressor.
Service Diagnosis