Daikin ZQG71~140L7V1B Service Manual page 192

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 power
supply voltage between
200±10% VAC?
YES
Remove the connector for fan motor
on the PCB, and operate.
U2
" " is displayed?
YES
CHECK 5
Is the resistance valve is
above the criteria?
YES
Is the wiring correct?
YES
When the compressor is running,
measure the voltage between + and -
of electrolytic capacitor (C+, C-).
Is the
measured voltage
220 VDC or more?
NO
CHECK 5 Refer to P.199.
180
NO
NO
Is the fan
motor normal?
(Refer to troubleshooting
E7
" " )
YES
NO
NO
YES
Field factors
NO
Replace the fan motor.
Replace the fan motor.
Correct the wiring.
Monitor the voltage
(Instantaneous voltage drop)
Replace the outdoor unit PCB.
ESIE12-06
Service Diagnosis