FILE NO. SVM-02007
– 15 –
4. WIRING DIAGRAM
4-1. Indoor Unit
Table 4-1-1 Simple Check for Failure Diagnosis
Diagnosis Result
Check if the OPERATION indicator goes on and off when the
main switch or breaker is turned on.
(Check the primary and secondary voltage of the transformer.)
Check the power supply voltage between
1
and
2
.
(Refer to the name plate.)
(Check the primary and secondary voltage of the transformer.)
Check the fluctuating voltage between
2
and
3
. (15~60VDC)
Check if the fuse blows out.
(Check the R04 of the varistor.)
Check the voltage at the No. 4 pin on CN13 connector of the
infrared receiver.
(Check the transformer and the power supply circuit of the
rated voltage.)
Check the voltage at the white lead of the louver motor.
(Check the transformer and the power supply circuit of the
rated voltage.)
Check the voltage at the No. 1 pin on CN10 connector.
(Check the DB01, R05 and C03.)
Refer to the service data for the detailed failure diagnosis.
Check Item
OPERATION
INDICATOR
TERMINAL
BLOCK
FUSE
3.15A
DC5V
DC12V
DC325V
(DC310~340V)
1
2
3
4
5
6
