Troubleshooting - Mitsubishi Electric MA-EF503HS-U Instruction Manual

Troubleshooting

Symptom
Main unit vibrates
heavily
There is no air intake
Little monitor response
Odor and smoke are
not completely
removed
Fan noise and
vibration are louder
than before
One of the following lamps flash:
FAN/POLLEN GUARD/NORMAL
Plasma deodorization
lamp flashes
The remote controller
does not work
The following symptoms are not malfunctions.
Symptom
The air fan does not turn, or there
is no air discharge
A small hissing noise is heard, or there
is a smell of ozone during the Plasma
deodorization
The monitors do not change much
(Odor monitor, microdust monitor and
pollen monitor)
The odor monitor does not change
even when an odor can be noticed
The monitor lamp flashes
The monitor lamp flashes even when
the room is clean
Should the problem persist after having checked the above list, stop using the unit, remove the power plug and contact
your dealer of purchase or Mitsubishi Electric.
Cause
Is the unit installed on an unstable or
unlevel surface?
Is the power plug securely inserted into
the power outlet?
Is the fan level lamp on?
(Is the power on?)
Are the sensors dusty?
Is the HEPA filter or the activated
charcoal filter dirty?
Are the sensors dusty?
Is the HEPA filter or the activated
charcoal filter dirty?
Is the activated charcoal filter still
wrapped in plastic?
Are the intake grill, the HEPA filter and
the activated charcoal filter properly set?
There is an abnormal electrical
discharge.
Have the batteries been completely depleted or are
the and of the batteries set correctly?
Is the unit operating in AUTO (NORMAL) mode?
The unit will stop operation when the air is clean.
During the Plasma deodorization, you may hear a small hissing noise or notice an ozone smell.
(The level of noise and degree of the smell of ozone will vary depending on the environment.
The generated ozone is of low concentration and is harmless to the body.)
Is the room too large?
Use the unit within the range of the applicable floor area.
If there is a large volume of dust or odor, it may
take some time for the air to become clean.
The sensitivity of the sensor differs depending on odor ingredients, and the
monitor display may at times remain unchanged.
The monitor lamp will flash until the sensors become stable, even if the
power is turned on immediately after inserting the power plug.
The sensor may at times respond to a breeze from air conditioners within
the room, and gases that are unnoticeable to the human smell.
Remedy
Install on a level and stable surface.
Reinsert the power plug into the power
outlet.
Press the power switch and turn on the
power.
Clean the sensors.
Replace the HEPA filter and the
activated charcoal filter.
Clean the sensors.
Replace the HEPA filter and the
activated charcoal filter.
Remove the plastic and replace.
Reset the intake grill, the HEPA filter
and the activated charcoal filter.
Clean the Plasma unit.
Replace with new batteries, or correctly set
the batteries observing the proper polarity.
Cause
Checking monitor operation:
Rub tissue paper in front
of the main unit to
discharge dust.
Blow cigarette smoke.
12~13
14
12~13
14
8
13
8
15