27
E
T
roub
leshooting
Symptom
Cause/Remedy
z
Check to see if the unit is on a slope or uneven surface which
causes the unit to tilt or wobble.
o
Move to a safe and even surface.
5
z
Check to see if the pre-filter is clogged.
o
Clean according to the methods specified in the
“Maintenance” section.
24
z
Operating the unit on a wood board or in a small room is likely to
cause acoustic resonance.
o
Placing a soft mat underneath the unit can reduce the acoustic
resonance.
6
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.
18
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 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.
12
The
unit
makes
noises.
The operating
noise is loud/
reverberates.
The operating sound
suddenly increases
in volume.
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
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.
The unit
produces
an odor.
During DRYING
INSIDE operation
z
Error message (Humidity indicator)
Digital Display
Cause/Remedy
z
Check to see if the power cord is plugged properly.
o
Correctly plug the power cord into the power socket.
10
or
appears.
z
Malfunction
o
Take note of error message, unplug the power cord, and contact
the Mitsubishi Electric Service Centre.
,
, 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
If the power cord is damaged, it must be replaced by the manufacturer, its services agent or similar qualified
persons in order to avoid a hazard.
z
Stop operation and contact the Mitsubishi Electric Service
Centre.
The power plug or power socket
generates abnormal heat.
