Troubleshooting for Wall Mounted and LSP Duct Type Indoor Unit
SiSG121917E
119
Part 6 Service Diagnosis
5.3 Indoor Fan Motor or Related Abnormality
5.3.1 DC Fan Motor or Related Abnormality
Applicable
Models
CTKS25/35/50/60/71TVMG
CTKB25/35/50/60TVMG
Error Code
A6
Method of Error
Detection
The rotation speed detected by the Hall IC during fan motor operation is used to determine
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
Caution
OK?
N
O
YES
YES
N
O
Be s
u
re to t
u
rn off the po
w
er s
w
itch
b
efore connecting or disconnecting
connectors, or parts may
b
e damaged.
Check the connector for
connection.
N
ote: The motor may
b
reak
w
hen the
motor connector is disconnected
w
ith the po
w
er s
u
pply on.
(T
u
rn off the po
w
er s
u
pply
b
efore
connecting the connector also.)
∗
To sec
u
re the connection,
once disconnect the connector
and then reconnect it.
Foreign matters in or
aro
u
nd the fan?
Rotate the fan
b
y hand.
Correct the connection.
Remo
v
e the foreign matters.
T
u
rn off the po
w
er s
u
pply.
(Unpl
u
g the po
w
er ca
b
le or t
u
rn
the
b
reaker off.)
A
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(R23939)
