Daikin RZQG71~140L7V1B Service Manual page 249

Troubleshooting by Remote Controller
Troubleshooting
Caution
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.
Are
there any
breaking and wrong wiring
of the connecting
wires?
YES
Is
the once-
connected indoor unit
equipment disconnected or the
address changed?
NO
Does transmission error
occur to all indoor units?
YES
Are
there any
breaking and wrong
wiring of the connecting wires
to the centralized
controller?
YES
Is the
centralized
controller setting connector
for the centralized controller
unit disconnected?
YES
238
NO
YES
NO
Is the group No. for the
defective indoor unit?
YES
NO
NO
Make the wiring correct.
Reset the all remote controllers
power supply at the same time.
NO
Make correct setting of the
centralized control group No.
Replace the indoor unit PCB.
Correctly connect the wiring.
Correctly connect the connector.
Replace the remote controller
PCB.
ESIE12-06
Service Diagnosis