SiBE12-908
Troubleshooting
Service Diagnosis
135
2.24
Damper Abnormality
Remote
Controller Display
H1
Outdoor Unit LED
Display
A
5
5
5
Method of
Malfunction
Detection
Detected by the limit switch (LS) in the humidification unit.
Malfunction
Decision
Conditions
Limit switch does not turn on or off when the operation of humidification unit starts or
finishes. For example, when turning on the power supply, when humidification operation
(including air intake) starts.
Supposed
Causes
Faulty damper operation due to frost
Faulty damper operation due to foreign material
Limit switch fault (including improper connection)
Defective motor for damper
Troubleshooting
OK
(Check intake air and
humidification unit for direct
sucking of moisture.)
Reconnect wires.
Remove the foreign
material.
Replace the damper unit
(replacement of the limit
switch only is impossible)
or, replace the outdoor unit
PCB.
Is the damper fixed
due to frost?
(R9444)
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.
Heat the damper unit and
melt frost
Is the damper fault
repeated?
NO
YES
YES
Is the wire connection
of limit switch (LS)
loosen?
YES
Is there any foreign
material in the
damper unit?
NO
NO
YES
NO
