Transmission Abnormality Between Indoor Unit Pcb And Fan Pcb - Daikin RXYQ-TA Series Service Manual

Troubleshooting by Error Code
3.16 Transmission Abnormality between Indoor Unit PCB and
Fan PCB
C1
Error Code
Applicable
FXMQ-PB
Models
Method of Error Transmission conditions between the indoor unit main PCB (A1P) and fan PCB (A2P) are checked
via microcomputer.
Detection
Error Decision When normal transmission is not conducted for certain duration.
Conditions
Supposed
Causes
Troubleshooting
197
Connection defective the connector between indoor unit main PCB (A1P) and fan PCB (A2P)
Defective indoor unit main PCB (A1P)
Defective fan PCB (A2P)
External factor, such as instantaneous power failure
Be sure to turn off the power switch before connecting or disconnecting
Caution
connectors, or parts may be damaged.
Is the
connector
between indoor
unit PCB (A1P) and
fan PCB (A2P)
accurately
connected?
(∗1)
YES
Confirm the condition of
transmission on indoor
unit PCB using field
setting mode. (∗2)
Under
above field
setting mode, second
code No. is
01.
YES
Connect the connector
X70A and turn ON the
power again.
C1 is
displayed
again.
NO
NO
NO
YES
SiUS341615E
Connect the connector
accurately.
Replace the indoor unit main
PCB (A1P).
Replace the fan PCB (A2P).
Connect it and continue the
operation (It is possible to have
a cause, such as instantaneous
power failure).
Service Diagnosis