Mitsubishi MSZ-YK09VA-H1, Operating Instructions Manual

Page: 43 / 54

Please check the following items before connecting a serviceman
Is there a failure? Check point
The air conditioner
can't operate.
The horizontal vane
can't operate.
Indoor cooling is not
enough.
The indoor unit gives
off odor.
The remote controller
has no message to
display or darkens.
The indoor unit has
no response to the
signal from the remote
controller.
Is there a failure? Answer (it 's normal)
The air conditioner
can't operate within
3 minutes after you
restart the machine.
Fan stops operation
in dry mode.
If the air conditioner can't still operate after the above items have been
checked, please stop using the machine and contact the specialty shop or
technical service center for help.
·
Is the filter clean?
In accordance with the microcomputer's
display, it means the protection of
the air conditioner, please wait.
During dry operation, the unit
uses the same refrigerant circuit
with the cooling operation. Dry
operation can' t decrease the room
temperature in order to reduce the
humidity. Therefore, sometimes the
compressor may stop operation
while indoor unit fan stops running,
which is to prevent the condensed
water drop on heat exchanger from
evaporating again.
When you think trouble occurs
Is the power supply turned on?
Is the fuse blown?
Is ON-Timer set?
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Are the horizontal vane and
vertical vane installed in the
indoor unit correctly?
Is the protective screening of the
fan distorted?
·
·
Is the temperature setting
correct?
Is the filter clean?
Is the air inlet or air outlet of the
indoor or outdoor unit covered?
Are the doors and windows in
room opened?
·
·
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·
Are batteries exhausted?
Is the polarity of a battery placed
correctly?
Are buttons on the remote controller
of other electric appliance
pressed?
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Please pay attention to the following condition before
asking a serviceman for repair.
·
In a room decorated with electronic fluorescent lamp, the
signal from the remote controller may be unacceptable.
In circumstances with weak radio wave, the air conditioner
may disturb the signal acceptance of broadcast or TV, thus,
the affected equipment may need a magnifier.
When thunder appears, you have to stop operation and
remove power plug or turn off the power supply. Otherwise,
there is a risk of damaging the electrical part in the air
conditioner.
·
·
·
A crack is heard. The noise results from the expansion/
shrinkage of the front panel due to
temperature change.
·
The air out of the
indoor unit has a
odor smell.
The air conditioner may absorb the
peculiar smells from wall, carpet,
furniture and clothes, then mix them
with air for blowout.
Is the Deodorizing filter cleaned?
Please clean the Deodorizing filter.
·
·
·
Voice similar to
current is heard.
This is a voice from refrigerant
flowing inside the air conditioner.
This is a voice from the flowing of
condensed water drop inside the
heat exchanger.
·
·
Voice similar to air
bubble is heard.
This is a voice from the ejection of
water flowing inside the drainage
hose when the outdoor air is
absorbed in the hose and when a
soot absorption machine or a vent
fan is activated. If the outside airflow
is strong and blown into the drainage
hose, you can hear the voice too.
·
Fog is blown out from
the indoor unit outlet
during operation.
The fog results from quick condensation
between moisture in the air and cold
airflow from indoor unit outlet.
·
Snapping can be
heard from indoor
unit.
This is a voice from the switching
(ON and OFF) of compressor or
fan.
·
Hiss can be heard
from indoor unit.
This is a voice in which the air
conditioner starts or stops refrigerant
flowing.
·
42
Is there a failure? Check point
Is there a failure? Answer (it 's normal)
When the air conditioner operates
in cooling mode, if the air is blown
downwards for one hour, the airflow
direction is set to (1) or (2) automatically,
which is to prevent condensed water
drop from dropping.
The airflow direction
c h a n g e s d u r i n g
operation. The remote
controller can’t adjust
the movement of the
horizontal vane.
·
There is a water
leakage in outdoor
unit.
In cooling operation, pipe or pipe
connector is condensed with water
due to cooling.
·
The horizontal vane and
vertical vane pauses to
swing and then starts to
swing again.
The condition appears so that normal
blowing with swing is enabled for the
horizontal vane and vertical vane.
·
C o o l i n g i n r o o m
can't fully meet the
demand.
Using exhaust fan or liquefied
cooking utensils can lead to
insufficient cooling with great load.
E x t r e m e h i g h o u t s i d e a i r
temperature can lead to poor
cooling effect.
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