Please Check The Following Items Before Connecting A Serviceman; When You Think Trouble Occurs - Mitsubishi Electric MSZ-YE09VA-H1 Operating And Installing Instructions

Please check the following items before connecting a serviceman

Is there a failure?
The air conditioner Is the power supply turned on?
·
can't operate. Is the fuse blown?
·
Is ON-Timer set?
·
Are the horizontal vane and
The horizontal vane
·
vertical vane installed in the
can't operate.
indoor unit correctly?
Is the protective screening of the
·
fan distorted?
Indoor cooling is not
Is the temperature setting
·
enough.
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?

When you think trouble occurs

Is there a failure?
The air conditioner In accordance with the microcomputer's
·
can't operate within
display, it means the protection of
3 minutes after you
the air conditioner, please wait.
restart the machine.
A crack is heard. The noise results from the expansion/
·
shrinkage of the front panel due to
temperature change.
The air conditioner may absorb the
The air out of the
·
peculiar smells from wall, carpet,
indoor unit has a
furniture and clothes, then mix them
odor smell.
with air for blowout.
Is the Deodorizing filter cleaned?
·
Please clean the Deodorizing filter.
Fan stops operation During dry operation, the unit
·
uses the same refrigerant circuit
in dry mode.
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.
Voice similar to This is a voice from refrigerant
·
current is heard. flowing inside the air conditioner.
This is a voice from the flowing of
·
condensed water drop inside the
heat exchanger.
Voice similar to air This is a voice from the ejection of
·
water flowing inside the drainage
bubble is heard.
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.
Check point
Answer (it's normal) 's normal) s normal)
't decrease the room t decrease the room
Is there a failure?
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.
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.
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.
Is there a failure?
Fog is blown out from
·
the indoor unit outlet
during operation.
S n a p p i n g c a n b e
·
heard from indoor
unit.
Hiss can be heard
·
from indoor unit.
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.
The horizontal vane and
·
vertical vane pauses to
swing and then starts to
swing again.
C o o l i n g i n r o o m ·
can't fully meet the
demand.
·
42
Check point
Is the filter clean?
Are batteries exhausted?
Is the polarity of a battery placed
correctly?
Are buttons on the remote controller
of o the r electric a ppliance
pressed?
Answer (it's normal) 's normal) s normal)
The fog results from quick condensation
between moisture in the air and cold
airflow from indoor unit outlet.
This is a voice from the switching
(ON and OFF) of compressor or
fan.
This is a voice in which the air
conditioner starts or stops refrigerant
flowing.
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.
In cooling operation, pipe or pipe
connector is condensed with water
due to cooling.
The condition appears so that normal
blowing with swing is enabled for the
horizontal vane and vertical vane.
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.