
Troubleshooting
4-28
4-4-4. Indoor Fan error (E154)
Check the normal
operation.
No
Is the motor connector(CN73)
disconnected from the PCB?
Connect the
connector to PCB
Yes
No
Does the motor rotates when operating?
Motor
ི
ļ
ུ
:
Is voltage of DC 0V~DC 6V displayed?
Check the PCB and
replace it
Is the RPM of motor less
than 120?
Yes
During operation or Operation at the
beginning :
E154 is displayed.
No
Check the motor and
replace it.
Yes
EX) DEPENDING ON FAN RPM,
VOLTAGE OF DC 0V~DC 6V IS OUTPUT.
ײ
ײ
1 2 3 4 5 6
Check the normal
operation
No
Is the motor connector (CN73) or (CN44)
disconnected from the PCB?
Connect the
connector to PCB
Yes
No
Is voltage
of AC 220V displayed to Motor
ļ
ི
after operation signal permission
of Fan?
Check the PCB and replace it
Yes
Check the motor and
replace it
[1-way cassette model]
Indoor unit display
360 Cassette
x(Ice blue) x(Yellow green)
◑
(Blue)
◑
(Red)
Judgment method
Refer to checking method, as shown below
Symptom
If the motor connector break away / Indoor unit Fan does not operate by motor or PBA defectiveness.