Mitsubishi MJ-E16V-S1 Service Manual page 10

5.2 Operation and Performance
Dehumidification is possible with a room
temperature of 1 – 35°C. If the room temperature
exceeds 35°C, however, the temperature inside the
unit will increase; therefore, the protective device
may activate and halt operation in some cases. For
this reason, the louvres should be aimed upward.
• If the room temperature is lower than 1˚C, there is
danger of the removed water freezing, making
dehumidification impossible, so the fan will start
operating.
Wait for 3 minutes before dehumidifying
The dehumidifier will not operate for 3 minutes
when the unit is turned on immediately after being
turned off or plugged in. (In order to protect the
compressor.)
When dehumidifying begins, the operational noise
increases. This is not a malfunction.
How does the dehumidifier work?
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 dehumidifier 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.
3 The dehumidified air is reheated by the
heating coil, and then discharged.
The humidity of the room is thus reduced by
repeating steps 1, 2, and 3.
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 airflow.
Use the reading on the unit as an estimate.
10
Working temperature Defrosting
The unit may display
flow, followed by a change in the operating noise. The
unit has stopped the airflow, and is melting internal frost
into the water tank. The unit will resume automatically
when the defrost operation completes.
This operation will be performed automatically when
the room temperature is approximately 15°C or
lower. (When humidity is high, this will occur
approximately once every 40 minutes for 5 – 10
minutes.)
Room temperature may rise 2-4°C during operation
The dehumidifier does not have a cooler function.
Due to heat produced during operation, the room
temperature may rise 2-4
blow warm air, but this is not due to a malfunction.
During winter, the air may not feel warm as the
temperature is below body temperature.
Dried (warm) air
Cooling coil
Moist air
Compressor
CURRENT
during operation and stop air
As a result, the unit may
°C
Re-heating coil
Water tank
<Cause>
● Inconsistencies
in temperature
and humidity
● Difference in
location
● Difference in
hygrometer
precision