Mitsubishi Electric MSH-07RV Operating Instructions Manual page 14

YOUTHINKTHATTROUBLE HAS OCCURRED
Question Answer (not a malfunction)
Question
Answer (not a malfunction)
The air conditioner
cannot be operated
for about 3 minutes
when restarted.
This protects the air conditioner according to instruc¬
tions from the microprocessor. Please wait.
Cracking sound is
heard.
The room smells
strange.
The fan stops
during the DRY
operation.
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.
Water leak from the
outdoor unit.
The sound as
burbling is heard.
Air does not blow
out soon in the
heating operation.
The operation is
stopped for about
10 minutes in the
heating operation.
During COOL and DRY operations, pipe or pipe con¬
necting 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 condensed on the heat
exchanger drips down.
This sound is heard when the outside air is absorbed
from the drain hose in turning on the range hood or
the ventilation fan and that makes water flowing 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.
Please wait as the air conditioner is preparing to blow
out warm air.
Defrosting of the outdoor unit is being done (Defrost¬
ing operation).
Since this is completed in 10 minutes, please wait.
(When the external temperature is too low and humid¬
ity is too high, frost is formed.)
The sound of water
flowing is heard.
p5%I
The air flow
direction changes
during operation.
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.
When the air conditioner is operated in COOL or DRY
mode, if the operation continues with air blowing down
for 1 hour, the direction of the airflow is automatically set
to horizontal to prevent condensed water from dropping.
In the heating operation, if the air flow temperature is
too low or when defrosting is being done, the horizon¬
tal vane position is automatically set to horizontal.
Hissing sound is
sometimes heard.
The room cannot be
cooled sufficiently.
This is the sound when the flow of refrigerant inside
the air conditioner is switched.
When a ventilation fan or a gas cooker Is used in a
room, the cooling load increases, resulting in an in¬
sufficient cooling effect.
When the outside air temperature is high, the cooling
effect may not be sufficient.
Mechanical sound
is heard from the
indoor unit.
This is the switching sound in turning on/off the fan or
the compressor.
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