Daikin RXQ12AHR Service Manual page 211

SiAF341904E
Troubleshooting
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the
X70A connector on the
indoor unit PCB properly
connected?
YES
Is the X12A
connector on the auto grille
control PCB properly
connected?
YES
Is the harness
disconnected?
NO
Is there any
external factor such as
noise?
NO
Turn OFF the power once and turn
ON again.
↓
Perform grille operation by wired
remote controller.
Is
"Auto grille
elevation operation"
displayed in the remote
controller menu?
YES
Can
the target unit be
selected?
YES
NO
NO
YES
YES
NO
NO
Troubleshooting by Error Code
Properly connect the connector.
Properly connect the connector.
Replace the harness.
Remove the external factor.
Check the indoor unit PCB and
the auto grille control PCB.
Check the indoor unit PCB and
the auto grille control PCB.
Normal.
205