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SiUS091601EA
Troubleshooting for FTX, FVXS Series
Part 6 Service Diagnosis
128
5.3 Indoor Fan Motor (DC Motor) or Related Abnormality
Error Code
A6
Method of Error
Detection
The rotation speed detected by the Hall IC during indoor fan motor operation determines abnormal
fan motor operation.
Error Decision
Conditions
The detected rotation speed does not reach the demanded rotation speed of the target tap, and is
less than 50% of the maximum fan motor rotation speed.
Supposed
Causes
Remarkable decrease in power supply voltage
Layer short inside the fan motor winding
Breaking of wire inside the fan motor
Breaking of the fan motor lead wires
Defective capacitor of the fan motor
Defective indoor unit PCB
Troubleshooting
FTX09/12/15NMVJU
Caution
OK?
NO
YES
YES
NO
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
Check the connector for
connection.
Note: The motor may break when the
motor connector is disconnected
with the power supply on.
(Turn off the power supply before
connecting the connector also.)
∗
To secure the connection,
once disconnect the connector
and then reconnect it.
Foreign matters in or
around the fan?
Rotate the fan by hand.
Correct the connection.
Remove the foreign matters.
Turn off the power supply.
(Unplug the power cable or turn
the breaker off.)
A
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(R23939)
Summary of Contents for FTX-N Series
Page 18: ...SiUS091601EA 13 Part 2 Specifications 1 Specifications 14 Part 2 Specifications...
Page 198: ...Check SiUS091601EA 193 Part 6 Service Diagnosis 18 24 class R24538 1 2 3 4 Multimeter...
Page 201: ...SiUS091601EA Check Part 6 Service Diagnosis 196 18 24 class R24539 DC DC W V U...
Page 229: ...SiUS091601EA Piping Diagrams Part 8 Appendix 224 RXL15QMVJU RXL18UMVJU 3D100007 3D123368...
Page 230: ...Piping Diagrams SiUS091601EA 225 Part 8 Appendix RXL24UMVJU 3D107985A...