Combination Abnormality (Between Indoor Unit Pcb And Fan Pcb) - Daikin RXQ12AHR Service Manual

SiAF341904E
5.15 Combination Abnormality (between Indoor Unit PCB and
Fan PCB)
Applicable FXMQ40-140PB
Models
C6
Error Code
Method of Error Transmission conditions with the fan PCB (A2P) are checked using the indoor unit PCB (A1P).
Detection
Error Decision
Fan PCB (A2P) communication data is determined to be incorrect.
Conditions
Supposed  Defective fan PCB (A2P)
 Defective connection of capacity setting adaptor
Causes
 Field setting error
Troubleshooting
Part 6 Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Does the
fan PCB part No. NO
match that of the spare
parts list?
YES
Has the
indoor unit main PCB
NO
(A1P) been replaced with
a spare PCB?
YES
Was the
correct capacity
NO
setting adaptor installed
when replacing it with
a spare PCB?
YES
Troubleshooting by Error Code
Replace it with the correct
fan PCB (A2P).
After establishing
transmission for indoor and
outdoor, diagnose the
operation again.
Install the correct capacity
setting adaptor.
After establishing
transmission for indoor and
outdoor, diagnose the
operation again.
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