Si18-201 Troubleshooting - Split Type Indoor Unit
Service Diagnosis 241
Troubleshooting
Check the varistor of the
indoor unit PCB.
Check the supply voltage.
Does the power
supply have the rated
voltage?
NO
NO
NO
Is it damaged?
Is there conductivity?
Is there conductivity?
Check the thermal fuse of the
terminal board.
Check the fuse of the indoor
unit PCB.
Is the connection proper?
Check the connection wire
contact at the terminal board.
NO
NO
YES
YES
YES
YES
Check the power supply, and
correct it if not proper.
Replace the varistor.
Replace the fuse.
Replace the thermal fuse of
the terminal board.
Replace the terminal board
and thermal fuse.
(MF007)
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1
YES
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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