Transmission Error - Daikin RXQ12AHR Service Manual

SiAF341904E

5.12 Transmission Error

Applicable FXFSQ
Models
C1-01
Error Code
Method of Error Check the condition of transmission using microcomputer.
Detection
Error Decision
Error is decided when transmission has been lost for 15 seconds and the error code is
Conditions displayed on the remote controller 60 seconds later.
Supposed
 Defective connection of the transmission connector (X70A)
Causes  Defective indoor unit control PCB
 External factor such as noise
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
connector X70A on the
indoor unit main PCB connected
correctly?
YES
Is there any
external factor such as
noise other than failure?
NO
Turn OFF the power supply and
then turn it ON again.
Put the unit into operation with the
remote controller.
Error is displayed
again.
YES
NO
YES
NO
Troubleshooting by Error Code
Connect the connector correctly.
Remove the external factor.
Normal.
Check the indoor unit control
PCB (A1P).
203