Daikin ZQG71~140L7V1B Service Manual page 169

ESIE12-06
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Turn OFF the power supply and turn
the power ON again.
NO
Error is displayed again?
electronic expansion
properly connected to
the outdoor unit PCB?
resistance of the electronic
expansion valve normal?
sensor of each thermistor
(suction pipe, discharge pipe,
intermediate heat exchanger and
heat exchanger distributor
Note:
1 Connector and indoor unit PCB
Model Connector for electronic expansion valve
RZQG
CHECK 6 Refer to P.199.
Service Diagnosis
YES
Is the
valve connector
NO
(*1)
YES
Is the coil
NO
CHECK 6
YES
Is the
temperature
NO
pipe thermistors)
mounted
properly?
YES
A
X21A
Troubleshooting by Remote Controller
Connect properly.
Replace the coil of the
electronic expansion valve.
Mount properly.
PCB
A1P
157