Mitsubishi Electric MA-E85R-E Manuel D'instructions page 18

Troubleshooting (Cont.)
Symptom
When looked through the air
outlet during operation, the
blower fan is vibrating.
When the power plug is
disconnected, sometimes a bleep
or buzzing sound can be heard.
The monitor indications are
slow to change.
The monitors respond very
infrequently.
The monitor indication
does not change despite
the existence of an odor.
The monitor responds even
though the air in the room
is clean.
The Replace Filter lamp is lit.
The Clean Dust Box lamp is lit.
The dust on the pre-filter cannot
be removed.
(The pre-filter does not rotate.)
The pre-filter is dirty.
If the symptoms persist even after trying the remedies above, stop using the air purifier and disconnect the power plug, and then
contact the retail store where you purchased the product.
18
This is not a problem as long as there is no abnormal noise or abnormal vibration.
Did you disconnect the power plug while the operation On/Off switch is ON?
Turn OFF the operation On/Off switch before disconnecting the power plug.
If the room is large, the air may take a while to become clean.
If there is a lot of dust and odor, the air may take a while to become clean.
<How to check monitor operation>
Rub tissue paper near the PM2.5 Sensor so as to create dust.
Place perfume, hair tonic, or the like on tissue paper and then place the tissue paper in front of the main
unit so that the fragrance is sucked into it.
Is there dust on the PM2.5 Sensor and odor sensor?
Clean the PM2.5 Sensor and odor sensor.
Response will be slow for a few minutes after the operation On/Off switch is
turned ON because the PM2.5 Sensor and odor sensor are performing the
preparation operation.
The monitor indication may not change sometimes because the sensitivity of the
sensor differs depending on the components of the odor.
The monitor may sometimes respond to the wind from an air conditioner in the
room or gas that is difficult for a human nose to sense.
Is there dust floating in the air? If there is even a small amount of dust floating in
the air, the monitor may respond.
Adjust the sensitivity of the PM2.5 Sensor and wait and see.
It is time to replace the HEPA filter and activated charcoal filter.
Replace the HEPA filter and activated charcoal filter.
It is time to clean the dust box.
Clean the dust box.
Is the dust box attached properly?
Attach the dust box properly.
Are the pre-filter unit and dust box unit securely attached?
Attach the pre-filter unit and dust box unit properly.
The cleaning mechanism is a function for removing dust on the pre-filter.
Cigarette tar and minute dust particles will not be removed.
If such dirt bothers you, wash the pre-filter in water.
Cause and Remedy
P.14
P.7
P.10
P.16
P.14
P.14
P.8
P.12–13
P.12–13