Combination Error Between Indoor Unit Control Pcb And Fan Pcb - Daikin VRV Aurora RXLQ-TATJU Series Service Manual

Troubleshooting by Error Code
3.24 Combination Error between Indoor Unit Control PCB and
Fan PCB
Applicable
FXSQ-TA, FXSQ-TB, FXMQ-PB, FXMQ-TB, FXMQ-TA
Models
C6
Error Code
Method of Error
Check the condition of transmission with fan PCB (A2P) using indoor unit control PCB (A1P).
Detection
Error Decision
When the communication data of fan PCB (A2P) is determined as incorrect.
Conditions
Supposed
 Defective fan PCB (A2P)
Causes  Defective connection of capacity setting adaptor
 Field setting error
Troubleshooting
271
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Does
the fan PCB
NO
part No. match that
of the spare
parts list?
YES
Was
indoor unit
NO
control PCB
(A1P) replaced
with a spare
PCB?
YES
Was
correct
capacity setting
NO
adaptor installed
when replacing it
with a spare
PCB?
YES
SiUS341802EC
Replace it with correct fan PCB
(A2P).
After establishing transmission
for indoor and outdoor units,
diagnose the operation again.
Install correct capacity setting
adaptor.
After establishing transmission
for indoor and outdoor units,
diagnose the operation again.
Part 6 Service Diagnosis