MITSUBISHI ELECTRIC MSH24WN - Manual (Page 13)

13
BEFORE CONTACTING THE SERVICE REPRE-
SENTATIVE, CHECK THE FOLLOWING AGAIN
The air conditioner
cannot be operated.
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Check the following.
1 Is the breaker turned
on?
2 Isn’t the fuse blown?
The room cannot be
cooled or heated
sufficiently.
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Check the following.
1 Is the temperature set-
ting correct?
2 Isn’t the filter dirty?
3 Isn’t the outlet of the out-
door unit blocked?
■ The remote control signal may
not be received in a room where
an electronic ON/OFF type fluo-
rescent lamp (inverter-type fluo-
rescent lamp, etc.) is used.
■ In the region where the electric
wave is weak, when the air con-
ditioner is operated, noise may
be generated in radio reception.
■ When thunder is heard, stop op-
eration and turn off the breaker.
Otherwise, the electrical parts
may be damaged.
3 Isn’t the ON-timer set?
Even if the above items are checked, when the air conditioner does not
recover from the trouble, stop using the air conditioner and consult your
dealer.
In the following cases, stop using the air conditioner and consult your dealer.
Display of the remote con-
troller does not appear (1,
2). The remote control sig-
nal cannot be received if
the remote controller is
not operated near the air
conditioner (1).
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Check the following.
1 Aren’t the batteries ex-
hausted?
2 Is the polarity (+, -) of the
batteries correct?
When a power failure occurs.
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Check the following after
the restoration of the power.
If the air conditioner had operated be-
fore the power failure, as this model
is equipped with an auto restart func-
tion, the air conditioner should start
operating again. (Refer to Description
of “AUTO RESTART FUNCTION” on
page 7.)
1 Does the air conditioner
start operating again?
WHEN YOU THINK THAT TROUBLE
HAS OCCURRED
Question
The air conditioner
cannot be operated
for about 3 minutes
when restarted.
Cracking sound is
heard.
The room smells
strange.
The fan stops
during the DRY
operation.
The sound of water
flowing is heard.
Answer (not a malfunction)
■ This protects the air conditioner according to instruc-
tions from the microprocessor. Please wait.
■ This sound is generated by the expansion/contraction
of the front panel, etc. due to change in temperature.
■ The air conditioner sucks in an odor adhering to the
wall, carpet, furniture, cloth, etc. and blows it out with
the air.
■ In DRY operation, the unit operates using the same
refrigerant circuit as in COOL operation. DRY opera-
tion time has to be reduced in order to lower humidity
without much room temperature decreasing. So the
compressor sometimes stops, and at the same time
the indoor fan stops. This prevents water condensed
on the heat exchanger from evaporating again.
■ This is the sound of refrigerant flowing inside the air
conditioner.
■ This is the sound of condensed water flowing in the
heat exchanger.
■ This is the sound of the heat exchanger defrosting.