When You Think That Trouble Has Occurred - Mitsubishi Electric MS-A09WA Manual De Instrucciones

• OPERATING INSTRUCTIONS •
W
HEN YOU THINK THAT TROUBLE HAS OCCURRED
Even if these items are checked, when the unit does not recover from the
trouble, stop using the air conditioner and consult your dealer.
Symptom
Indoor Unit
The unit cannot be operated. • Is the breaker turned on?
• Is the power supply plug connected?
• Is the ON timer set?
The horizontal vane does not • Is the horizontal vane installed correctly?
move. • Is the fan guard deformed?
The unit cannot be operated • This protects the unit according to instruc-
for about 3 minutes when tions from the microprocessor. Please
restarted. wait.
The fan stops during the DRY • In DRY operation, the unit operates using the
operation. same refrigerant circuit as in COOL opera-
tion. DRY operation time has to be reduced
<MS TYPE ONLY>
in order to lower humidity without much room
temperature decreasing. So the compres-
sor sometimes stops, and at the same time
the indoor fan stops. This prevents water
condensed on the heat exchanger from
evaporating again.
Mist is discharged from the air • The cool air from the unit rapidly cools mois-
outlet of the indoor unit. ture in the air inside the room, and it turns
into mist.
The swing operation of the • This is for the swing operation of the HORI-
HORIZONTAL VANE is ZONTAL VANE to be performed normally.
suspended for a while, then
restarted.
The air flow direction changes • When the unit is operated in COOL or DRY
during operation. mode, if the operation continues with air
The direction of the horizontal blowing down for around 1 hour, the direction
vane cannot be adjusted with of the air flow is automatically set to position
the remote controller. (1) to prevent water from condensing and
dripping.
The unit starts operation by • These models are equipped with an auto re-
itself when the main power start function. When the main power is turned
is turned on, though it isn't off without stopping the unit with the remote
operated with the remote controller and is turned on again, the unit
controller. starts operation automatically in the same
mode as the one set with the remote control-
ler just before the shut off of the main power.
Refer to "Auto restart function"
Outdoor Unit
Water leaks from the outdoor • During COOL and DRY operations, pipe or
unit. pipe connecting sections are cooled and this
causes water to condense.
The fan of the outdoor unit • When the outside temperature is low dur-
does not rotate even though ing cooling operation, the fan operates
the compressor is running. intermittently to maintain sufficient cooling
Even if the fan starts to rotate, capacity.
it stops soon.
En-9
Explanation & Check points
Page 7
page 5 .
Symptom
Remote controller
The display on the remote • Are the batteries exhausted?
controller does not appear • Is the polarity (+, -) of the batteries correct?
or it is dim. The indoor unit Page 4
does not respond to the • Are any buttons on the remote controller of
remote control signal. other electric appliances being pressed?
Does not cool
The room cannot be cooled • Is the temperature setting appropriate?
sufficiently. Page 5
• Is the fan setting appropriate? Please
change fan speed to higher setting.
Page 6
• Are the filters clean?
• Is the fan or heat exchanger of the indoor unit
clean?
• Are there any obstacles blocking the air inlet
or outlet of the indoor or outdoor unit?
• Is a window or door open?
• When a ventilation fan or a gas cooker is
used in a room, the cooling load increases,
resulting in an insufficient cooling effect.
• When the outside temperature is high, the
cooling effect may not be sufficient.
Airflow
The air from the indoor unit • Are the filters clean?
smells strange. • Is the fan or heat exchanger of the indoor unit
clean?
• The unit may suck in an odor adhering to the
wall, carpet, furniture, cloth, etc. and blow it
out with the air.
Sound
Cracking sound is heard. • This sound is generated by the expansion/
contraction of the front panel, etc. due to
change in temperature.
The sound as burbling is • This sound is heard when the outside air is
heard. absorbed from the drain hose by turning on
the range hood or the ventilation fan, making
water flowing in the drain hose to spout out.
This sound is also heard when the outside air
blows into the drain hose in case the outside
wind is strong.
Mechanical sound is heard • This is the switching sound in turning on/off
from the indoor unit. the fan or the compressor.
The sound of water flowing • This is the sound of refrigerant or condensed
is heard. water flowing in the unit.
In the following cases, stop using the air conditioner and consult your
dealer.
• When water leaks or drips from the indoor unit.
• When the left operation indicator lamp blinks.
• When the breaker trips frequently.
• The remote control signal is not received in a room where an electronic ON/OFF
type fluorescent lamp (inverter-type fluorescent lamp, etc.) is used.
• Operation of the air conditioner interferes with radio or TV reception. An ampli-
fier may be required for the affected device.
• When an abnormal sound is heard.
Explanation & Check points
Page 4
Page 8
Page 8