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11-5. Judgment of Trouble by Every Symptom
11-5-1. Indoor Unit (Including Remote Controller)
(1) Power is not turned on (Does not operate entirely)
<Primary check>
1. Is the supply voltage normal?
2. Is the normal voltage provided to the outdoor unit?
3. Is the crossover cable connected properly?
4. Is the fuse (F01) blown?
( For 10/13k)
FILE NO. SVM-13001
• Be sure to disconnect the motor connector CN31 after shut off the power supply, or it will be a cause of
damage of the motor.
NO
Turn off power supply once, and
5 second later, turn it on again.
Is OPERATION indicator flashing?
Is it possible to turn on
power supply by pushing
[ ] button on
remote controller?
Is voltage
(DC12V or 5V)
indicated on rear of
indoor control
board normal?
Does transmission mark
on remote controller flash
normally,and is its signal
transmitted properly?
Item by symptoms
Operation
Check Item
Considerable principle cause
Measures
Parts (R01, C01, C02,
R64, C27, DB01
Remote controller is defective.
Refer to (5) “Troubleshooting
for remote controller”.
Parts of a power supply circuit
defective.
Unit operates normally.
Replace main
P.C. board
Is fuse (F01)
of indoor control
board blown?
NO
NO
NO
NO
YES
YES
YES
YES
YES
T01) are defective.
Microcomputer
is defective.
