SiUS341802E
Troubleshooting by Error Code
Service Diagnosis
190
2.16 Transmission Abnormality between Indoor Unit PCB and
Fan PCB
Error Code
C1
Applicable
Models
FXSQ-TA, FXMQ-PB
Method of Error
Detection
Transmission conditions between the indoor unit main PCB (A1P) and fan PCB (A2P) are checked
via microcomputer.
Error Decision
Conditions
When normal transmission is not conducted for certain duration.
Supposed
Causes
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
Troubleshooting
Under
above field
setting mode, second
code No. is
01
.
NO
NO
YES
Replace the fan PCB (A2P).
YES
YES
Is the
connector
between indoor
unit PCB (A1P) and
fan PCB (A2P)
accurately
connected?
(
∗
1)
NO
C1
is
displayed
again.
Confirm the condition of
transmission on indoor
unit PCB using field
setting mode. (
∗
2)
Connect the connector
X70A and turn ON the
power again.
Connect it and continue the
operation (It is possible to have
a cause, such as instantaneous
power failure).
Connect the connector
accurately.
Replace the indoor unit main
PCB (A1P).
Caution
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Summary of Contents for Aurora Series
Page 317: ...SiUS341802E Wiring Diagrams Appendix 304 RXLQ96 120TATJU 2D112581A ...
Page 318: ...Wiring Diagrams SiUS341802E 305 Appendix RXLQ72TAYDU 2D112582A ...
Page 319: ...SiUS341802E Wiring Diagrams Appendix 306 RXLQ96 120TAYDU 2D112583A ...
Page 331: ...SiUS341802E Wiring Diagrams Appendix 318 VAM1200GVJU 3D073270C ...
Page 332: ...Revision History Month Year Version Revised contents 04 2018 SiUS341802E First edition ...