Before Contacting The Service Representative, Check The Following Again; When You Think That Trouble Has Occurred - Mitsubishi Electric MSZ-GA22VA Operating Instructions Manual

BEFORE CONTACTING THE SERVICE REPRE-
SENTATIVE, CHECK THE FOLLOWING AGAIN
Question Check points
The air conditioner • Is the breaker turned on?
cannot be operated. • Is the fuse blown?
• Is the ON timer set? (Page 9)
All LED lamps on the • Is the horizontal vane attached to the indoor unit
indoor unit are blinking. correctly? (Page 12)
The horizontal vane • Are the horizontal vane and the vertical vane
does not move. attached to the indoor unit correctly? (Page 12)
• Is the fan guard deformed?
The room cannot be • Is the temperature setting correct? (Page 7)
cooled or heated • Is the fi lter clean? (Page 10)
suffi ciently. • Is the fan of the indoor unit clean? (Page 12)
• Are there any obstacles blocking the air inlet or
outlet of the indoor or outdoor unit?
• Is a window or door open?
The air from the indoor • Is the fi lter clean? (Page 10)
unit smells strange. • Is the fan of the indoor unit clean? (Page 12)
The display on the • Are the batteries exhausted? (Page 5)
remote controller does • Is the polarity (+, -) of the batteries correct?
not appear or it is dim. (Page 5)
The indoor unit does • Are any buttons on the remote controller of other
not respond to the electric appliances being pressed?
remote control signal.
When a power failure • Does the air conditioner start operating again?
occurs. If the air conditioner had operated before the
power failure, as these models are equipped
with an auto restart function, the air conditioner
should start operating again. (Refer to Descrip-
tion of "AUTO RESTART FUNCTION" on page
6.)
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.
• When water leaks or drops from the indoor unit.
• When the left operation indicator lamp blinks.
• When the breaker trips frequently.
• The remote control signal may not be received in a room where an electronic
ON/OFF type fl uorescent lamp (inverter-type fl uorescent lamp, etc.) is used.
• Operation of the air conditioner may interfere with radio or TV reception in
areas where the reception is weak. An amplifi er may be required for the
affected device.
• When thunder is heard, stop operation and disconnect the power supply plug
or turn off the breaker. Otherwise, the electrical parts may be damaged.
WHEN YOU THINK THAT TROUBLE HAS OCCURED
Question Answer (not a malfunction)
The air conditioner • This protects the air conditioner according to in-
cannot be operated structions from the microprocessor. Please wait.
for about 3 minutes
when restarted.
Cracking sound is • This sound is generated by the expansion/con-
heard. traction of the front panel, etc. due to change in
temperature.
The air from the indoor • The air conditioner may suck in an odor adhering
unit smells strange. to the wall, carpet, furniture, cloth, etc. and blow
it out with the air.
The fan of the outdoor • When the outside temperature is low, the fan
unit does not rotate may not operate to maintain suffi cient cooling
even though the capacity.
compressor is running.
Even if the fan starts to
rotate, it stops soon.
The sound of water • This is the sound of refrigerant fl owing inside the
fl owing is heard. air conditioner.
• This is the sound of condensed water fl owing in
the heat exchanger.
• This is the sound of the heat exchanger defrost-
ing.
The sound as burbling • This sound is heard when the outside air is
is heard. absorbed from the drain hose in turning on the
range hood or the ventilation fan and that makes
water fl owing in the drain hose spout out.
This sound is also heard when the outside air
blows into the drain hose in case the outside
wind is strong.
The room cannot be • When a ventilation fan or a gas cooker is used in
cooled suffi ciently. a room, the cooling load increases, resulting in
an insuffi cient cooling effect.
• When the outside air temperature is high, the
cooling effect may not be suffi cient.
Mist is discharged from • The cool air from the air conditioner rapidly cools
the air outlet of the moisture in the air inside the room, and it turns
indoor unit. into mist.
Mechanical sound is • This is the switching sound in turning on/off the
heard from the indoor fan or the compressor.
unit.
The swing operation • This is for the swing operation of the HORIZON-
of the HORIZONTAL TAL VANE to be performed normally.
VANE is suspended for
about 15 seconds, then
restarted.
Question Answer (not a malfunction)
The air fl ow direction • When the air conditioner is operated in COOL
changes during or DRY mode, if the operation continues with
operation. air blowing down for 1 hour, the direction of the
The direction of the air fl ow is automatically set to position (1) to
horizontal vane cannot prevent condensed water from dropping.
be adjusted with the • In the heating operation, if the air fl ow tempera-
remote controller. ture is too low or when defrosting is being done,
the horizontal vane position is automatically set
to horizontal.
Water leaks from the • During COOL and DRY operations, pipe or pipe
outdoor unit. connecting sections are cooled and this causes
water to condense.
• In the heating operation, the defrosting operation
makes water frozen on the outdoor unit melt and
drip down.
• In the heating operation, water drips from the heat
exchanger. This is not a malfunction. However, if
you have any trouble with water dripping, consult
your dealer for drainage work. Please note that
we cannot provide drainage work in such climate
that the outdoor unit may get frosted.
White smoke is • In the heating operation, vapor generated by the
discharged from defrosting operation looks like white smoke.
the outdoor unit.
Air does not blow out • Please wait as the air conditioner is preparing to
soon in the heating blow out warm air.
operation.
The operation is • Defrosting of the outdoor unit is being done
stopped for about (Defrosting operation).
10 minutes in the Since this is completed in 10 minutes, please
heating operation. wait. (When the external temperature is too low
and humidity is too high, frost is formed.)
Hissing sound is • This is the sound when the fl ow of refrigerant
sometimes heard. inside the air conditioner is switched.
The room cannot be • When the outside air temperature is low, the
heated suffi ciently. heating effect may not be suffi cient.
In a multi-unit system, • A small amount of refrigerant continues to fl ow
the indoor unit which is into the indoor unit even though it is not operat-
not operating becomes ing.
warm and a sound,
similar to water fl owing,
is heard from the unit.
The air conditioner • These models are equipped with an auto restart
starts the operation function. When the main power is turned off
only with the main without stopping the air conditioner with the
power turned on, remote controller and is turned on again, the
though you do not air conditioner will start operation automati-
operate the unit with cally in the same mode as the one set with the
the remote controller. remote controller just before the shutoff of the
main power.
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