Transmission Abnormality Between Indoor Unit Pcb And Fan Pcb - Daikin VRV-WIII RWEYQ72PTJU Service Manual

SiUS30-1301
3.10 Transmission Abnormality between Indoor Unit PCB and
Fan PCB
C1
Error Code
Applicable FXMQ07~48P
Models
Method of Error Check the condition of transmission between indoor unit PCB (A1P) and fan PCB (A2P) using
Detection computer.
Error Decision
When normal transmission is not conducted for certain duration.
Conditions
 Connection defective the connecter between indoor unit PCB (A1P) and fan PCB (A2P)
Supposed
 Defective indoor unit PCB (A1P)
Causes
 Defective fan PCB (A2P)
 External factor, such as instantaneous blackout
Troubleshooting
Service Diagnosis
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Is the
connector
between indoor
NO
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
NO
setting mode, second
code No. is
01
" ".
YES
Connect the connecter
X70A and turn ON the
power again.
C1
" "
YES
is displayed
again.
NO
Troubleshooting by Indication on the Remote Controller
Connect the connector
accurately.
Replace the indoor unit PCB
(A1P).
Replace the fan PCB (A2P).
Connect it and continue the
operation (It is possible to have
a cause, such as instantaneous
blackout).
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