Mitsubishi Electric MJ-E15BX-S1-IT Service Manual page 25

Symptom
The operating
sound is loud
The operating
noise is loud/
reverberates
The operating
sound suddenly
increases in
The unit
volume
makes
noises
The wind sound
changes in volume
The unit produces
a simmering sound
The unit makes a
gentle clinking or
rattling sound
The unit produces
a buzz that sounds
intermittently (or
the compressor
does not activate)
When fi rst used
• During internal
The unit
drying
produces
• During
an odour
deodorizing
clothes operation
Error message (Humidity indicator)
Digital display
appears in the CURRENT
HUMIDITY indicator
appears in the CURRENT
HUMIDITY indicator
appears
in the CURRENT HUMIDITY
indicator
If the symptoms persist even after following the prescribed remedies, or the error message does not
disappear, unplug the power cord, and contact the place of purchase.
Cause/Remedy
Since the unit uses two fans and two motors in addition to the cool air function, the
operating sound becomes loud compared to models without a cool air function. This is not
a malfunction. If the operating sound bothers you, use the unit set to DEHUMIDIFYING LOW.
Check to see if the unit is on a slope or uneven surface.
→
Move to a sturdy even surface.
Check to see if the silver ion fi lter is clogged.
→
Clean according to the maintenance procedures.
Operating the unit in small rooms or in tight spaces sometimes causes
the sound to reverberate.
→
Place a mat underneath the unit.
The sound increases when the compressor activates (approximately 3 minutes
after turning on the unit or during automatic operation ( DEHUMIDIFYING AUTO)).
Is operation being performed with the unit set to DEHUMIDIFYING LOW?
→
When the room temperature becomes 35°C or more, operation is performed
with the same amount of wind as HIGH in order to protect the compressor.
The volume of the sound differs depending on the angle of the louvre.
This is the sound of the refrigerant. The sound can be heard while the refrigerant
stabilizes after the unit turns on, changes modes, or stops.
This is the sound of the blowing route changing. The unit sometimes makes
sounds when the operating mode changes or the blowing route changes during
operation.
This is the sound of the compressor. In modes that monitor the humidity
level or during drying inside, the compressor operates intermittently
causing the sound to be heard occasionally. The compressor does not
activate after turning the unit off, or for 3 minutes after plugging the unit
into a power socket. (This is to protect the compressor from damage.)
The heat converter heats rapidly causing an odour. This is not a malfunction.
The moisture expelled from inside the unit may smell due to odorants that were
not caught by the silver ion fi lter dissolving in the water. This is not a malfunction.
Cause/Remedy
Check to see if the power cord is plugged into the power socket properly.
→
Plug the power cord into the power socket properly.
Check to see if anything is blocking the air outlet.
→
Remove the obstruction, and plug the power cord into the power
socket again.
Check to see if the silver ion fi lter is clogged.
→
Clean according to the maintenance procedures.
Malfunction
→
Take note of error message, unplug the power cord, and contact the
place of purchase.
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