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Symptom
The operating
noise is loud/
reverberates.
The operating sound
The
suddenly increases
unit
in volume.
makes
noises.
The air blowing sound
changes in volume.
The unit produces
a simmering
sound.
The unit produces a buzz
that sounds intermittently
(or the compressor does
not activate).
When first used
The unit
produces
During DRYING
an odor.
INSIDE operation
The power plug or power socket
generates abnormal heat.
z Error message (Humidity indicator)
Digital Display
or
appears.
appears.
,
, or
–
appears.
z If the symptoms persist even after following the prescribed remedies, or the error message does not disappear,
unplug the power cord, and contact the Mitsubishi Electric Service Centre.
z When unplugging and plugging back the power cord into the power socket, wait at least one minute before
plugging it in.
Cause/Remedy
z Check to see if the unit is on a slope or uneven surface which
causes the unit to tilt or wobble.
→ Move to a safe and even surface.
z Check to see if the pre-filter is clogged.
→ Clean according to the methods specified in the
"Maintenance" section.
z Operating the unit on a wood board or in a small room is likely to
cause acoustic resonance.
→ Placing a soft mat underneath the unit can reduce the acoustic
resonance.
z Sound increases when the compressor starts operation.
(Approximately three minutes after turning on the unit, or during
INTELLIGENT LAUNDRY and AUTO operation.)
z The volume of the sound differs depending on the louvre angle.
z This is the sound of the refrigerant flow.
The sound can be heard when the unit is turned on, operation
mode is changed or operation stops. No sound can be heard
when the refrigerant flow stabilizes.
z This is the sound of the compressor when it starts up.
In EASY and AUTO mode, the compressor operates intermittently, so
there is compressor startup sound. The compressor does not start
when the operation ends or until 3 minutes has passed after the unit
is turned on. This is to protect the compressor from damage.
z The temperature of heat exchanger goes up rapidly, causing transient odor.
z The discharged moisture may emit an odor. It is common that the
silver ion filter cannot eliminate all the odors and the odors can
be absorbed by moisture inside the unit.
z Stop operation and contact the Mitsubishi Electric Service
Centre.
Cause/Remedy
z Check to see if the power cord is plugged properly.
→ Correctly plug the power cord into the power socket.
z Check to see if anything is blocking the air outlet.
→ Remove the obstruction and plug the power cord into the
power socket again.
z Check to see if the pre-filter is clogged.
→ Clean according to the "Maintenance" procedures.
z Malfunction
→ Take note of error message, unplug the power cord, and contact
the Mitsubishi Electric Service Centre.
P4
P21
P5
P16
P9
P4·9
P21
23
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