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Mitsubishi Electric MA-EF303HS-U, Instruction Manual, Page: 15 / 16

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Mitsubishi Electric MA-EF303HS-U Instruction Manual Download Page 15

Press the power switch and turn on the 
power.

Reinsert the power plug into the power 
outlet.

Clean the sensors.

Replace the HEPA filter and the 
activated charcoal filter.

Clean the sensors.

Replace the HEPA filter and the 
activated charcoal filter.

Clean the Plasma unit.

Reset the intake grill, the HEPA filter 
and the activated charcoal filter.

Replace with new batteries, or correctly set 
the batteries observing the proper polarity.

12~13

14

14

8

13

8

Symptom

Cause

Remedy

Symptom

Cause

The odor monitor does not change 
even when an odor can be noticed

The sensitivity of the sensor differs depending on odor ingredients, and the 
monitor display may at times remain unchanged.

● 

The following symptoms are not malfunctions.

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.
 

There is no air intake

Odor and smoke are 
not completely 
removed

Is the fan level lamp on?
(Is the power on?)

Is the power plug securely inserted into 
the power outlet?

Are the sensors dusty?

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.)

The monitors do not change much
(Odor monitor, microdust monitor and 
pollen monitor)

Is the room too large?

Use the unit within the range of the applicable floor area.

Checking monitor operation:

● 

Rub tissue paper in front 

of the main unit to 
discharge dust.

● 

Blow cigarette smoke.

If there is a large volume of dust or odor, it may 
take some time for the air to become clean.

The monitor lamp flashes

The monitor lamp will flash until the sensors become stable, even if the 
power is turned on immediately after inserting the power plug.

The monitor lamp flashes even when 
the room is clean

The sensor may at times respond to a breeze from air conditioners within 
the room, and gases that are unnoticeable to the human smell.

Is the unit operating in AUTO (NORMAL) mode?
The unit will stop operation when the air is clean.

Are the sensors dusty?

Fan noise and 
vibration are louder 
than before

Plasma deodorization 
lamp flashes

There is an abnormal electrical 
discharge.

Is the activated charcoal filter still 
wrapped in plastic?

One of the following lamps flash:
FAN/POLLEN GUARD/NORMAL

Are the intake grill, the HEPA filter and 
the activated charcoal filter properly set?

The remote controller 
does not work

Main unit vibrates 
heavily

Little monitor response

Is the unit installed on an unstable or 
unlevel surface?

Install on a level and stable surface.

Is the HEPA filter or the activated 
charcoal filter dirty?

12~13

Is the HEPA filter or the activated 
charcoal filter dirty?

Remove the plastic and replace.

Have the batteries been completely depleted or are 
 the        and       of the batteries set correctly?

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

Tr

oub
le-

shooting

15

Maintenance

Troubleshooting

Replacing the filters

T

roub

leshooting

Summary of Contents for MA-EF303HS-U

Page 1: ...ote control CONTENTS Page Safety precautions 2 Precautions 4 Names and functions of parts 5 Effective usage 7 Preparations 8 Setting the filters Installing the batteries for remote controller Operation viewing the monitor lamps 9 Changing the airflow 10 Plasma air deodorization 11 Off TIMER operation 11 Monthly cleaning 12 Yearly cleaning 13 Replacing the filters 14 Troubleshooting 15 Specificatio...

Page 2: ...t where the plug cannot be inserted securely Electrical shock short circuit and or fire may occur as a result Do not wash the Plasma unit Using the Plasma unit when wet may cause fire and or electrical shock Do not insert finger or foreign objects into the dust sensor Electrical shock may occur as a result Remove the power plug when cleaning Furthermore never handle the power plug with wet hands o...

Page 3: ...ock fire and or cracking may occur as a result Do not remove the HEPA filter with the unit laying on its back Dust may enter inside the unit and fire and or electrical shock may occur as a result Do not use damaged filters or operate the unit without a filter Contact your dealer or Mitsubishi Electric for a replacement Fire and or electrical shock may occur as a result Do not touch the electric po...

Page 4: ...nit at least 3 3 feet 1m away from televisions cordless telephones air conditioners computers incandescent bulbs fluorescent lighting etc Electrical wave interference may occur resulting in the remote control becoming inoperable Do not use in a location exposed to direct sunlight Deformation and or discoloration may occur as a result Leave space around the unit Walls and or ceiling may become dirt...

Page 5: ...grill On each side of unit Table stand Air fan Spring clips On each side of Plasma unit What is a HEPA filter High Efficiency Particulate Air filter The HEPA filter is a high performance filter than can catch up to 99 97 of all particles as small as 0 3 micron in diameter Handle Exhaust air port Power cord Removing Lay the unit on its back side and then remove the stand by pressing table stand tab...

Page 6: ...ODOR MICRO DUST POLLEN How do the sensors work Odor sensor Using a semiconductor sensor gases from odor ingredients are detected The sensor will react to a breeze from air conditioners fans etc as well as odorless gases and perfumes Dust sensor MICRODUST Using an optical sensor the number of particles less than approximately 1 micron is detected POLLEN Using an optical sensor the number of particl...

Page 7: ... air deodorization switch on the remote only Plasma air deodorization function ON Plasma air deodorization function OFF 9 Operation switch Turns the unit ON Turns the unit OFF Off TIMER switch Switches the timer ON Switches the timer OFF Names and functions of parts Effective usage 10 Use by installing on a high platform Table top POLLEN GUARD operation POLLEN GUARD which reacts to even the slight...

Page 8: ...the activated charcoal filter are titanium oxide not mildew Installing the batteries for the remote controller While pushing the cover slide it forward Insert the batteries Close the cover by sliding it backward until it snaps shut Two AA type batteries Ensure that the proper polarity is observed Use dry cell batteries in a proper manner Do not use rechargeable batteries Make sure that the positiv...

Page 9: ...roller to turn on the air purifier The operation is the same as on the main unit ON OFF Press Press How to use the remote controller The remote controller allows you to operate the unit from a remote place Aim the remote controller toward the main unit and press the switch The maximum range of operation is 23 feet 7 m Remote sensor Remote controller Do not cover the remote sensor with cloths etc I...

Page 10: ... NORMAL Operation switches every time the button is pressed and the selected operation mode lamp lights Operation is automatically adjusted to the appropriate airflow volume according to the odor monitor microdust monitor and pollen monitor POLLEN GUARD The sensor is set to supersensitive to react to even the slightest traces of pollen The fan speed is faster than the NORMAL operation for easier i...

Page 11: ...be heard and the unit may also stop at times If the noise becomes irritating turn off the feature by pressing the PLASMA button on the remote control When the Plasma deodorization lamp is blinking turn the unit off and clean the Plasma unit To operate from the main unit you can turn the Plasma deodorization ON or OFF using the following procedure When the power is turned on press and hold the AUTO...

Page 12: ...ipe with a soft cloth For stubborn dirt wipe with a cloth dampened with water Press the grill release buttons on each side and remove the intake grill Remove the HEPA filter and clean Replace the HEPA filter remove dust by taking care not to tear the HEPA filter surface Do not wash The filter cannot be reused if washed or after becoming wet 8 Replace the intake grill Hook the five tabs on the uppe...

Page 13: ...de remove the intake grill and then remove the HEPA filter Remove the Plasma unit Cleaning the Plasma unit Plasma unit Do not pull by force Malfunction may occur as a result Clean the Plasma unit Lightly flick off the tips Using force may cause the Plasma unit to deform resulting in malfunction of the unit Use a toothbrush and lightly flick off the tips of the electric poles Replace the Plasma uni...

Page 14: ...eplace old filters with new filters When smoking large amount of cigarettes odor may adhere to the filter and main unit In this case clean the main unit and replace the filters Separately sold part Replacement filter set HEPA filter activated charcoal filter Model MAPR E837HFT Code no 5D4 C06 To order parts contact your dealer of purchase or Mitsubishi Electric www plasmapure com Remove the intake...

Page 15: ...pplicable floor area Checking monitor operation Rub tissue paper in front of the main unit to discharge dust Blow cigarette smoke If there is a large volume of dust or odor it may take some time for the air to become clean The monitor lamp flashes The monitor lamp will flash until the sensors become stable even if the power is turned on immediately after inserting the power plug The monitor lamp f...

Page 16: ...HIGH MED LOW MIN MAX HIGH MED LOW MIN 36W 26W 19W 17W 16W 106 CFM 90 CFM 65 CFM 46 CFM 34 CFM 66W 28W 19W 17W 16W 160 CFM 102 CFM 65 CFM 46 CFM 34 CFM MITSUBISHI ELECTRIC AIR PURIFIER MA EF503HS U MA EF303HS U Model Power supply Current fuse 2A motor overheat protection device operational temp 212 F 100 C abnormal electric discharge protection device Remote controller type AA battery 2 MA EF303HS ...

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