Symptom-based Troubleshooting Si20-701_B
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2. Symptom-based
Troubleshooting
2.1 Overview
Symptom Details of Measures
1 Equipment does not operate. Refer to P.31
2
Indoor unit fan operates, but
compressor does not operate.
Refer to P.33
3
Cooling/heating operation starts
but stops immediately.
Refer to P.36
4
After unit shuts down, it cannot
be restarted for a while.
Refer to P.38
5
Equipment operates but does
not provide cooling.
Refer to P.41
6
Equipment operates but does
not provide heating.
Refer to P.44
7
Equipment discharges white
mist.
Refer to P.47
8
Equipment produces loud noise
or vibration.
Refer to P.49
9 Equipment discharges dust. Refer to P.52
10
Remote controller LCD displays
“88”.
Refer to P.53
11 Equipment emits odor.
Room smell and cigarette odors
accumulated inside the indoor
unit are discharged with air.
Inside of the indoor unit must be
cleaned.
12
Flap operates when power is
turned ON.
It is normal.
The flap initializes for accurate
positioning.
13
Change of operation mode
causes flap to move.
It is normal.
There is a control function that
moves the flap when operation
mode is changed.
14
Fan operates in “M” tap during
heating even if remote controller
is set to “L” tap.
It is normal.
It is caused by the activation of
the overload control (airflow shift
control).
15
Flap automatically moves during
cooling.
It is normal.
It is caused by the activation of
the dew condensation
prevention function or ceiling
soiling prevention function.
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