Mitsubishi Electric MA-E85R-E Instruction Manual page 17

Troubleshooting
Before requesting repairs, thoroughly read this Instruction Manual, and check the following points.
Symptom
The air purifier does not operate.
The bottom of the inlet panel
cannot be attached.
The main unit vibrates a lot.
Odor and smoke are difficult to
remove.
The operation noise and vibration
have increased.
A clattering sound is heard.
A buzzing sound has
become loud.
The main unit makes a sound
when being moved.
Cause and Remedy
Has the power plug become disconnected?
Firmly insert the power plug into the power outlet.
Is an air volume lamp or operation mode lamp lit?
(Is the operation On/Off switch ON?)
Turn ON the operation On/Off switch.
Is the tab (1 place) on the dust box unit inserted in the hole properly?
Attach the dust box unit properly.
Did you install the main unit on a surface that is not flat or stable?
Install the main unit on a table or other surface that is flat and stable. P.3
Is the pre-filter dirty?
Clean the pre-filter.
Are the filters dirty?
Replace the filters.
Is there dust on the PM2.5 Sensor and odor sensor?
Clean the PM2.5 Sensor and odor sensor.
Are you operating the air purifier with "Turbo" or "High" manual operation or
"Turbo" automatic operation?
The sound is louder for operation with a high air volume. If the sound
bothers you, select an operation mode with a low air volume.
Is the pre-filter dirty?
Clean the pre-filter.
Are the filters dirty?
Replace the filters.
Is the activated charcoal filter installed in the main unit still inside the plastic bag?
Take it out of its plastic bag and then attach it again.
Is the dust box unit attached to the pre-filter unit properly?
Attach the dust box unit properly.
A buzzing sound is emitted during the cleaning of the pre-filter because the motor
is running. If a lot of dust adheres to the cleaning brush, the buzzing noise may
become loud.
When the noise bothers you, perform cleaning.
Are you moving the air purifier while it is operating?
If the main unit is suddenly moved or tilted, sound may be emitted.
P.9
P.9
P.13
P.12–13
P.16
P.14
P.9
P.12–13
P.16
P.8
P.13
P.12–13
P.3
17