Si18-201 Troubleshooting - Split Type Indoor Unit
Service Diagnosis 245
Troubleshooting
Check the indoor unit's LED A.
Check the outdoor unit's
LED A.
ON or OFF
ON
OFF
ON
OFF
To the section on outdoor
unit diagnosis
To the section on faulty
indoor unit PCB
To the section on faulty
power supply or faulty
indoor unit PCB
Replace the indoor unit
PCB.
Signal transmission error
(between indoor and
outdoor units)
Correct the connection.
Replace the remote
controller cable.
Replace the remote
controller or indoor unit
PCB.
Outdoor unit's LED A
Flashing
Flashing
(MF010)
Indoor unit's LED A
Indoor unit's LED B
Is it normal?
Check the cable between the
indoor unit and remote
controller.
Check the indoor unit's LED B.
NO
Check the cable connection
between the indoor unit and
remote controller
YES
NO
YES
Is it normal?
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
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