Mitsubishi Electric MJ-E15BX-A1 Instruction Manual download pdf (Page 3)

Room temperature may rise

2-4°C during operation

The dehumidiﬁ er is not capable of cooling or warming a

whole room. Due to heat produced during operation, the

room temperature may rise. As a result, the unit may blow

warm air, but this is not to a malfunction.

The humidity reading on the unit

may differ from a hygrometer in

the same room

Even in the same room, temperature and humidity levels

may differ from place to place. If the hygrometer and the

unit are in different parts of the room, the humidity levels

are prone to differ. Moreover, humidity levels differ between

places that have good and no airﬂ ow.

Use the reading on the unit as an estimate.

The unit can operate in a room

temperature range of 1-35°C.

However, if the room temperature exceeds 35°C, the unit

may operate in blower mode or increase the airﬂ ow. This is

because the temperature within the unit rises causing the

protection mechanism to operate. In order to lower the internal

temperature of the unit, use the unit with the swing function

stopped and louvre vertical.

If the temperature is below 1°C, the extracted water is close

to freezing, disabling the dehumidiﬁ er, and only the blower

is operational.



The defrosting operation is

performed when the room

temperature falls to 15°C or less

In all modes, the defrosting operation is performed

automatically when the room temperature falls to 15°C or less.

Approximately once every 40 minutes at its most frequent,

the DEFROST lamp lights and airﬂ ow (dehumidifying) stops

automatically, and then the frost that has accumulated inside

the unit will be melted and dropped into the tank.

Normal operation will resume several minutes after defrost

cycle begins.

The dehumidi er collects less

water in winter.

In winter, because the temperature is generally lower than in

summer, the effect of the dehumidiﬁ er is greatly reduced as

shown in the graph below.

Although only a little water collects in the tank, this is not a

malfunction.

5 10152025

Temp.

Before using the unit

Air ow stops after air is

blown for approximately

2 minutes.

The operation sound

changes



How does the dehumidi er work?

Dehumidi er cycle

If you pour cold water into a cup, the air around it

becomes cold, causing water droplets to form on the

surface of the cup.

The dehumidiﬁ er takes advantage of this phenomenon

to remove moisture from the air.

1 The unit draws air from the room, cools it with its

cooling coil, causing the moisture to transform into

water droplets.

2 The water droplets fall into the water tank.

Air passed through the re-heating coil is heated and

blown out from an air outlet. (The air outlet varies

depending on the operating mode.)

The humidity of the room is thus reduced by repeating

steps 1, 2, and 3.

Warm airCool air

Cooling coil

Compressor

Re-heating coil

Water tank

Cause

Inconsistencies

in temperature

and humidity

Difference in

location

Difference in

hygrometer

precision



Summer (humidity) Winter (dampness)

When the humidity is 80% and the value is HIGH

The values shown on the graph were measured

at constant temperature and humidity and do not

reﬂ ect values obtained in actual usage conditions.



Features of this dehumidiﬁ er

Dehumidiﬁ cation capacity (L/day)

Room temperature (°C)

Dried air

Moist air

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Mitsubishi Electric MJ-E15BX-A1 Instruction Manual Page 3

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