Mitsubishi MJ-E16VX-S1 User manual

CONTENTS
1. PRODUCT SPECIFICATIONS........................................................................................ 2
2. OUTER DIMENSIONS .................................................................................................... 3
3. EXTERNAL VIEW, PARTS AND DISPLAY SECTION................................................... 3
4. NAMES AND FUNCTIONS OF PARTS....................................................................... 4 ~ 10
5. TECHNICAL POINTS................................................................................................. 11 ~ 13
6. MAINTENANCE ......................................................................................................... 14 ~ 16
7. WIRING DIAGRAM AND BLOCK DIAGRAM
7.1 Wiring Diagram....................................................................................................... 17
7.2 Function List ....................................................................................................... 18 ~ 21
7.3 Timing Charts ..................................................................................................... 22 ~ 25
7.4 General Block Diagram ...................................................................................... 26 ~ 27
8. TROUBLESHOOTING PROCEDURE
8.1 Troubleshooting flowchart ................................................................................. 28 ~ 29
8.2 Key Component Check Procedures ....................................................................... 30
8.3 Error Indications and Corrective Actions ............................................................... 31
8.4 Self-Test program and Execution Procedure .................................................... 31 ~ 32
9. DISASSEMBLY AND REASSEMBLY HINTS .......................................................... 33 ~ 36
9.1 Disassembly Procedures ....................................................................................... 33
10. CONTINUOUS WATER DRAINAGE ............................................................................. 37
PARTS CATALOG .......................................................................................................... 38 ~ 45
11. TROUBLESHOOTING ............................................................................................... 46 ~ 47
PRECAUTIONS ............................................................................................................... 48 ~ 50
ADVANCED AND EVER ADVANCINGMITSUBISHI ELECTRIC
DEHUMIDIFIER 2005
SERVICE MANUAL
MJ-E16VX-S1Model
Sold from 2005
No.MJW-0501A

2
1. Product specifications
Easy
Dehumidifying
* The brackets [ ] enclose values measured at a room
temperature of about 15°C or lower.
16.0
41
37
Single phase, 220-240V, 50Hz
275
1.3
5.5
Blue (A)
570 ×384 ×187
11.7
120
Slit fin
Slit fin
Thermal overcurrent relay
XB460VTE
150
Primary: 26.1 , subsidiary: 70.7
With temperature fuse
Sirocco fan
16
4
1 ~ 35 (°C)
Hot gas type
Built-in humidity sensor
Lead switch (automatic)
Auto-stopper tripped with about 4.0 liters of water
Commercial hose (inside diameter 15 mm)
AUTO · EASY DEHUMIDIFYING · LAUNDRY · MILDEW GUARD · LOW ·
LOW TEMP · DRYING INSIDE · AIR PURIFIER
MJ-E16VX-S1
Item
Power supply (phases,V,Hz)
Power consumption (W)
Operating current (A)
Starting current (A)
Color tone
Dimensions (H ×W ×D mm)
Weight (kg)
Coolant quantity (g)
Evaporator
Condenser
Model
(30°C room temperature, 80% relative humidity) (liters/day)
Laundry
Low
Performance
Product performance
CompressorBlower
Electrical characteristics
Operating noise levels(dB)
Compressor protection
Model
Output (W)
Winding resistance (Ω)(20°C)
Blower protection
Type
Output (W)
Flow rate selection
Speed (rpm)
Flow rate (m3/min)
Operating room
temperature (reference) (°C)
Air Purifier
Drying Inside
Low
Low Temp
Mildew Guard
The operating noise levels indicated are
typical values measured in our anechoic room.
680
680
or 700
680
or 720
700
2.5
680
or 720
2.5
or 2.7
700
2.6
2.5
or 2.6
2.5
or 2.7
2.6
Laundry
700
[720]
2.6
[2.7]
Dehumidifying capacity
On/Off timer (1-9h)
Ye s
16A
Defrosting method
Humidity control
Tank full protection
Tank capacity (liters)
Continuous drainage
Operation modes
Timer
Air cleaning performance
Plug socket rating

3
2. Outer Dimensions
3. External View, Parts and Display Section
Drain the water tank before use
Refrain from opening
doors/windows during
operation
Drying laundry indoors
Use the dehumidifier in a small, enclosed room.
Maintain room temperature above 16°C
with an air conditioner
Installing your dehumidifier
Make sure to leave some space around the
unit.
<For use in close proximity to
a wall>
Stop the louvre in the
vertical position. Blowing air
at the wall may cause
staining.
Operating noise
Place the unit on top of a mat. This reduces
vibration and noise. It also prevents leaving
depressions on carpets.
At least 50 cm At least
2 cm
At least
20 cm
At least 20 cm
At least
20 cm
¡Direct the louvres at the laundry.
¡Space laundry to improve airflow.
¡Drying times will vary depending on the nature of the
laundry and the room temperature. In low
temperatures, drying takes about twice as long as
normal. In low temperatures (10°C), drying takes
about twice as long as when normal (20°C+).
¡The airflow is strongest to the top right of the unit.
2. Outer Dimensions

Continuous drainage outlet
4
Front
Back
What is a washable photocatalytic filter?
The water tank may contain water residue at
time of purchase. This is from final product
testing at the factory and is not due to a defect.
The washable photocatalytic filter has a two-layer
construction consisting of a white particle filter and a blue
air-freshener filter.
<Particle filter>
The fine particle filter removes pollen* and dust particles.
<Air-freshener Filter>
The special air-freshening agent contained in the fibres
of the air-freshener filter absorbs odorants such as
ammonia. The odor is broken down by photocatalysis
renewing the air-freshening properties.
As the filter’s particle and air-freshening properties are
renewed by simply soaking and leaving it to dry in the sun,
the air purifier can be used continuously over a long time.
Cigarette smoke and toxins found in smoke, such as
carbon monoxide, cannot be removed with this filter.
* Diameter of pollen: approx. 10-100µm
Front Air Intake
Do not block.
Control panel Washable photocatalytic filter
(hereafter: photocatalytic filter) (See box below for discussion)
Pre-filter
Air filter performance testing facility
Japan Spinners Inspecting Foundation (tested under
JIS L 1902 standards)
Water tank
Front panel
Tank lid
Floating element
Front door
Louvre
Power plug
Sensor
Do not cover
Side air intakes (left/right)
Do not block
Handle
Raise handle to transport
4. Names and Functions of Parts

5
Control Panel
LCD Panel
All indicators on the LCD panel shown below.
¡Lamps
Current mode lights
¡Selection button
Switches modes
¡Mode button
For switching from
one operating
mode to another
¡
Humidity Selection
This is used to set
the target humidity.
¡Child lock
To set the child lock,
press the mode
button for three
seconds.
¡Swing louvre button
Sets swing louvre
direction or locks it into
position
¡ON/OFF Timer button
Sets timer
¡Power lamp
Lights when unit is ON.
¡Power button
Use this to switch the
unit ON and OFF.
¡Tank full light
This lights up to warn that
the water tank is full.
¡Drying inside lamp
Flashes when drying inside in progress.
¡Drying inside button
Activates/deactivates drying inside.
¡Air purifier lamp
Lights during air purifier only operation
¡Air purifier button
Switches to air purifier only operation
¡EASY
DEHUMIDIFYING
¡LAUNDRY
¡LOW
¡MILDEW GUARD
¡LOW TEMP
¡AUTO
¡AIR PURIFIER
All modes include
dehumidifier and air purifier
functions.
Air purifier only operation.
The dehumidifier function is
disabled.
You can select from 7 operating modes
¡Information display
Indicates room and unit condition
The indicator comes on if the room temperature drops below 15°C.
Activating Low Temp mode is recommended.
Low Temperature Indicator
DEFROST Indicator High humidity
warning
The indicator flashes
when the humidity in the
room exceeds 75%.
Activating the dehumidifier is
recommended when the
indicator is flashing.
If the High humidity warning
is not used, remove the
power plug from the power
socket.
Airflow (dehumidifying) will stop and the frost that
has accumulated inside will be melted and
dropped into the tank when the indicator is on.
Please wait a moment as operation will resume
in around 5 minutes.
While in DEFROST mode, airflow
(dehumidifying) and the louvre will stop. The
sounds coming from the unit will also
change.
DEFROST will start automatically when room
temperature drops below 15°C (This may be as
often as once every 40 minutes).
¡Mode Indicator
Indicates the current
operating mode.
¡Humidity Indicator
This indicates the
approximate humidity
indicates the current
humidity
indicates the
humidity setting in
AUTO mode
The current humidity is
displayed in a range from 30
to 80%.
¡Swing monitor
Indicates the direction
of the swing louvre.
¡Child lock indicator
Displayed while child lock
is active
¡Timer display
Displays the time set
for the ON/OFF timer.

6
¡LOW TEMP The unit operates continuously and automatically by controlling airflow according to
room temperature. The air flow is strongest below 15°C. The use of LOW TEMP
mode is recommended when the Low temperature indicator is lit.
When the temperature is low, condensation may still form on windows exposed to the outside
air even when LOW TEMP mode is operating
¡ MILDEW GUARD The unit lowers humidity levels automatically once a day, suppressing mildew growth.
Use the unit within the effective floor space for maximum benefits.
¡The unit operates intermittently for 2-4 hours a day
(24 hours).
¡The operating time varies depending on the humidity.
The unit continues to operate when the humidity does not
decrease.
•Humidity 40%→Approx. 2 hours
•Humidity 50%→Approx. 4 hours
∞Refrain from turning on ventilation fans or opening windows or doors as this lowers performance.
∞Mildew growth may still occur due to the fungus type and conditions of the room.
E.g. Rooms that contain excessive condensation, bathrooms, and places with bad airflow (insides of
closets and behind furniture).
∞This mode does not remove existing mildew.
∞Do not use in conjunction with OFF Timer mode. Effects may not be achieved.
Information
Information
¡LOW The dehumidifier operates regardless of the humidity level. Airflow is weak.
ON 24 hours
Dehumidifies Dehumidifies
Standby
24 hours
Standby
How is mildew Mildew is unable to produce new spores (similar to plant seeds) if dried as
mycelia. The Mildew Guard feature applies this principle (However, the
growth suppressed? spores themselves are resilient to dry conditions.). “Identification of Aspergillus
and Penicillium”
<Research paper by Dr. K. Abe of the Environmental Biology Research Center>
Repeat
¡EASY DEHUMIDIFYING
The unit operates intermittently controlling the
airflow to remove the damp feeling in the air.
(There is no need to set the humidity level)
When the room temperature is high, the blower
operates to decrease the damp feeling.
The airflow or louvre operation may stop
according to the humidity level.
¡LAUNDRY
The unit operates for 12 hours and automatically
switches off.
∞Drain the tank before use.
The unit may stop before the washing dries
because of a full tank.
∞Do not use in conjunction with the OFF
timer.
The timer may turn the unit off before the
washing dries.
∞The following conditions prevent clothes
from drying well:
Room temperature below 15°C, large
volume of laundry; laundry not spaced well;
clothes of thick fabric and spacious room.
Humidity level (%)
Room temperature (°C)
60
50
020 27 30
Room temperature is
below 27°C - the unit
automatically sets the
humidity level
according to the
temperature.
Room temperature is
above 27°C - the unit
lowers the humidity
level to 50%, then
activates the blower.
The dehumidifier is
reactivated when
humidity rises to 60%.
Modes
Information

7
¡AUTO
The unit maintains the humidity level by
automatically controlling airflow and operating
intermittently as necessary. All you have to do is set
the humidity level.
¡The unit turns off when current humidity
decreases past the set humidity level, and
restarts when the level is exceeded.
¡The unit operates for 6 minutes continuously
regardless of the humidity level immediately after
turning the power on.
Frequent use of exits and room size/conditions
may cause the humidity to not reach the set
level.
< To view set humidity level/ To set humidity level >
¡Pressing the button once displays
the set humidify level with the
indicator. After 3
seconds, the display
returns to the current
humidity display.
¡Pressing HUMIDITY
SELECTION while is
displayed sets the
humidity level. Each time the button
is pressed, the humidity setting
changes.
¡AIR PURIFIER
The unit cleans the air by passing it through the photocatalytic filter. The dehumidifying function is disabled.
∞The air passes through the photocatalytic filter in all modes, cleaning the air even if the air purifier
lamp is not lit.
∞Cigarette smoke and toxins found in smoke, such as carbon monoxide, cannot be removed with this
filter.
Information
Information
Press
Press
again
6570 505560
¡Swing louvre function (how to read the swing monitor)
The louvre can be made to swing. Select from the 4 possible settings to suit the purpose.
Press
¡Starts swing operation.
¡The swing monitor is displayed.
The swing operation stops when the
power cord is unplugged.
This indicates the range of louvre swing.
(The louvre and monitor do not move in
synchronization.)
Stop swing
operation
WIDE
UPWARD
REAR
With each
press of the
button
Stop the louvre in the vertical position when using the unit against a wall. Blowing air at the wall may
cause staining.
Note
∞The level of noise emitted from the unit varies according to the angle of the air-flow.
∞The louvre may stop up to a maximum of 8 seconds to correct its position, after which it will start
moving again.
∞If the louvre is knocked out of the desired angle, readjust by following the above steps.
Information

¡Drying inside
The inside of the unit can be dried to suppress mildew growth on the cooler.
On days the dehumidifier is used, drying inside is recommended.
8
<Drying inside operation> This operation takes approximately one hour. However, when the
room temperature is below 1°C, drying time is shortened to protect
the compressor.
OFF
Regular
operation
Dehumidifier
Air purifier
Drying inside operation (approx. one hour.)
Airflow
Approx.
30min.
Airflow stops; compres-
sor activates (operating
sound)
Compressor operates
according to room temperature
Approx. 20min.
Compressor
stops
Airflow
Approx.
10min.
Unit
stops
auto-
mati-
cally
Operating
sounds
To abort drying inside
Press the drying inside button while the
unit is performing drying inside (the Drying
inside lamp turns off)
Press the power button to abort drying inside,
and resume normal operation.
∞Connecting/disconnecting the power plug deactivates automatic operation.
∞This function does not remove existing mildew. Also, aborting drying inside may cause the benefits to
diminish.
∞Do not close the louvres while drying inside as this causes noise.
∞The moisture expelled from inside the unit may cause the humidity level of the room to rise.
∞The air leaving the unit may appear white depending on the humidity or temperature of the room.
∞The moisture expelled from inside the unit may smell due to odorants* that were not caught by the
filter dissolving in the water.
* The photocatalytic filter is mainly for absorbing ammonia.
∞The OFF timer cannot be set during drying inside.
Information
Press while the unit is off
Automatic operation
To activate drying inside after every use.
¡Drying inside standby
(Drying inside lamp lit)
Drying inside starts when operation ends
When the unit is turned off, LAUNDRY mode
ends, or the OFF timer ends.
¡Drying inside starts
The Drying inside lamp flashes, the
humidity indicator turns off, and the louvre
stops in the vertical position.
Drying inside mode
¡Drying inside ends
The Drying inside lamp turns off and the
louvres shut.
<To deactivate automatic operation>
Press the Drying inside button while the unit is
on (the Drying inside lamp turns off)
Manual operation
To activate drying inside by pressing a button.
¡Drying inside starts
The drying inside lamp flashes, the
humidity indicator turns off, and the louvre
stops in the vertical position.
Drying inside mode
¡Drying inside ends
The drying inside lamp turns off and the
louvres shut.
Press while the unit is on

9
The unit automatically shuts down and indicates with the light and sound that the water tank is full. Empty the
water tank.
¡Tank full light lights
(The unit beeps continuously.)
¡Air flows stops (louvre stops)
¡Swing monitor turns off
¡Compressor turns off
•After removing the water and replacing the tank, the Tank full light will go off, and the unit will automatically
return to operation mode.
•When the Tank full light is lit, no operation but ON/OFF is possible.
Tank full light
[Lamp Indicator]

To cancel the OFF timer
<When you want to turn the unit off>
Press the POWER button. (Power off)
¡The OFF Timer is cancelled.
<When you want to disable the Timer OFF
mode, and continue operation>
Keep pressed until the remaining time display
disappears to return to continuous operation.
¡The OFF Timer is cancelled.
To cancel the ON timer
Press the Power button. (Power off)
¡The ON timer is cancelled.
Press
Press Press
10
The following is an example of a display indicating
AUTO dehumidifying (set to 60%), swing set to WIDE
and the ON timer set for 5 hours.
¡The time remaining until the unit switches itself on
is indicated in increments of one hour.
¡When the set time is reached, the unit switches
itself on.
To set
1Switch the power off.
2Set the time you wish the unit to turn on.
¡ Press once. The Power lamp, Mode indicator, and a [ ]
on the digital display flash. The [ON] indicator lights.
¡Each subsequent press changes the display in
order from 1 to 9 hours.
(Hold the button to run automatically through the
numbers.)
3Select operating mode.
Select desired operating mode.
Set drying inside (auto) as desired.
4Change the louvre swing direction.
Select the desired setting.
5Confirm the operating start time.
¡Power lamp and Time display light.
➝The ON timer is set.
The unit informs you if you forget to press the Power
button by making the Time display and Mode
indicator blink and sounding an alarm for 1 minute.
[Timer Operation]
OFF timer operation
The OFF timer can be set for 1 to 9 hours.
Set the timer when the power is switched on.
ON timer operation
The ON timer can be set for 1 to 9 hours.
Set the timer when the power is switched off.
To set
1Switch the power on.
2Select operating mode.
Select desired operating mode.
3Change the louvre swing direction.
Select the desired setting.
4Set the operating time.
¡
When pressed once the figure [ ] and [OFF] appear.
¡ Each subsequent press changes the display in order from 1 to 9 hours.
(Hold the button to run automatically through the numbers.)
➝The OFF timer is set.
The following is an example of a display indicating AUTO dehumidifying
(set to 60%), swing set to WIDE and the OFF timer set for 2 hours.
¡ The time remaining until the unit switches itself off is
indicated in increments of one hour with a flashing numeral.
¡When the set time is reached, the unit switches
itself off and the louvre closes automatically.
¡
Drying inside will commence if it has been activated.
No Display
(LOW mode)
Press
Press
Press
No Display
(operation
is off)
∞Empty the water tank before operating. The unit
stops and the Tank full lamp lights if the tank
becomes full during operation.
∞The OFF timer and ON timer cannot be set at the
same time.
∞Do not use timer OFF mode in conjunction with
LAUNDRY or MIDEW GUARD.
∞The OFF timer cannot be set during internal drying.
∞Drying inside is deactivated when the ON timer is
set during internal drying operations.
∞The ON timer function is not operable using a
commercially-available timer plug outlet.
Information
Information

11
5. Technical points
5.1 The technical points of the new products
1) Drying inside
During dehumidification, moisture accumulates on the heat exchanger. If left, this can lead to mildew
growth, which is circulated around the room with the air discharge. Drying inside starts automatically after
operation, and dries any moisture inside the unit.
2) Powerful 16-litre/day dehumidifying
The uncomfortable damp feeling caused by humidity is something that needs to be removed quickly.
Mildew can grow and damage the home or clothing when closets, dressing rooms, shoe cabinets, and
other spaces where humidity is prone to collect are not dehumidified. A single high-capacity unit is
effective in dehumidifying and drying various locations throughout the home, quickly moving from one
point to the next.
3) Room humidity and sensible temperature comfortably controlled
The EASY DEHUMIDIFYING mode controls humidity according to room temperature. If the room
temperature rises during dehumidification, use CIRCULATION mode (*1) to lower the sensible
temperature.
*1The automatic dehumidification and blower modes operate alternately controlling the sensible
temperature and humidity to a comfortable level (50%–60%).
4) Washable photocatalytic filter
The photocatalytic deodoring filter and particle filter are integrated.
This filter collects ammonia, the base for household smells, as well as dust, fungus spores, and pollen.
It is easy to clean, meaning longer lasting performance.

12
The dehumidifier does not have a cooler function.
Due to heat produced during operation, the room
temperature may rise 2-4°C As a result, the unit may
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.
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.
Working temperature
Wait for 3 minutes before dehumidifying
Defrosting
Room temperature may rise 2-4°C during operation
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.
The unit may display during operation and stop air
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.)
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.
1The unit draws air from the room, cools it with
its cooling coil, causing the moisture to
transform into water droplets.
2The water droplets fall into the water tank.
3The 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.
W
h
y
a
r
e
t
h
e
y
d
i
f
f
e
r
e
n
t
?
CURRENT
<Cause>
●Inconsistencies
in temperature
and humidity
●Difference in
location
●Difference in
hygrometer
precision
Re-heating coil
Cooling coil
Moist air
Compressor
Dried (warm) air
Water tank

13
5.3 Coolant Circuit
Dehumidifying
Defrosting
Coolant flow
Blow
Fan
Heat exchanger (heat radiation)
φ 5
φ 6.35
φ 5
φ6.35
Compressor
Heat exchanger (cooling)
Intake
φ
6.35
Tube temperature
sensing thermistor
φ
6.35
Capillary tube
Capillary tube
φ
2.0 × φ 0.8 × 340
φ 5.0 × φ 4.0
φ 6.35
Humidity
sensor
Room
temperature
sensing thermistor
Solenoid
valve
(closed when
dehumidifying
and open
when
defrosting)
5.4 Performance curve
When the temperature and humidity are low, the amount of water collected is
decreased.
In winter, because the temperature is lower than in summer, the effects of the dehumidifier decrease
dramatically as shown in the graph below.
Although less water collects in the tank, this is not a malfunction.
Summer (humidity) Winter (dampness)
*If the temperature is low, but the humidity is high due to snow or rain, operating the unit in LOW TEMP
mode will yield better results than in LOW mode.
Values for LOW when humidity is 80%.
¡The values shown on the graph were measured at
constant temperature and humidity and do not
reflect values obtained in actual usage conditions.
Room temperature (°C)
Dehumidification capacity (L/day)
0
2
4
6
8
12
14
16
10
5101520
25 30

14
6. Maintenance
Dry well in the sun
(The performance of
the filter renews with
soaking, and the
photocatalytic effect of
the sunlight removes
remaining odorants)
Hose with lukewarm water
when excessively soiled.
Dry well.
Remove grit with
vacuum cleaner
Remove the front panel and pre-filter.
1
Remove the photocatalytic filter.
2
Clean the pre-filter.
3
Floating element
Do not remove or dismantle.
Fit the photocatalytic filter.
4
Attach the pre-filter and front panel.
5
Remove the front panel and pre-filter.
1
Remove the photocatalytic filter.
2
Soak the photocatalytic filter in water.
3
Dry the photocatalytic filter.
4
Fit the photocatalytic filter.
5
Attach the pre-filter and front panel.
6
Water tank · Main unit
Wipe with a soft cloth.
Cleaning Once every three months
Pre-filter
Debris clogging the pre-filter reduces
the effectiveness of the dehumidifier.
Clean once every 2 weeks.
Once every two weeks
Do not use detergents, cleaning agents for heat exchange equipment, abrasive powders, chemically treated
dusters, gasoline, benzene, thinners or other solvents, as they can damage the unit or the water tank, which
may result in leakage.
¡ Stains may remain on the filter, but should
not affect performance.
¡ The filter can be soaked for a total of eight
times. After that, replace with a new filter.
Do not use detergent or hot water.
Also, do not brush or rub while soaking
as this may damage the filter.
Do not hang with pegs as this may
damage the filter.
Do not use the filter while wet.
Maintenance
Photocatalytic filter
Soaking the filter in water, and leaving it to dry
in the sun renews the performance and
prolongs service life. Perform this every three
months.
Soak in cool to
lukewarm water for
30 minutes.
¡The unit draws in dust present in the air, and
this may cause the tank to gradually
become dirty. If the dirt does not come off
easily, wash with cold or warm water, then
wipe with a soft, dry cloth.
¡Mildew may form in the tank unless kept
clean.

15
Pour the
water out
as shown.
Removing Water from the Tank
The unit automatically shuts down and lights the Tank full lamp when the tank (approximately 4L) is full.
Empty the tank.
1Remove the water tank.
2Remove the tank lid, and empty.
Floating element
Do not remove or dismantle
the float.
Note
Grasp handle and
slide out.
Open the front door.
Do not remove or dismantle the floating element
in the tank. If it is removed, the unit cannot detect
when the tank is full, and this could result in
leakage.
<Hold the tank
this way>
Tank lid
3Reattach the tank lid and replace
the water tank.
Confirm that the
lid is securely
attached to the
water tank, and
push the tank in.
Close the front
door.
¡If the lid is not properly closed, you
may have problems removing the tank.
¡If the tank is not installed correctly, the
tank full light will come on, and the unit
will not operate.

16
After switching the unit off, leave for one day until
any water inside has had time to run off, then carry
out the following steps.
1Perform drying inside
Performing drying inside to prevent mildew
growth is recommended.
2Bundle
power cord.
3Remove the
drainage
water.
Empty the water tank and
wipe away any remaining
drops of water.
4Clean the
pre-filter.
Remove grit with
vacuum cleaner
5Store the unit.
•When you are sure that all parts of the
unit are dry, cover it with a cloth to keep
it from dust.
•Store the unit in an upright position in a
place not exposed to direct sunlight.
Remove the front panel and pre-filter to
replace the photocatalytic filter.
Replacing the Air Purifying Filter
The air purifying filter is disposable.
Make sure to replace the filter when it becomes dirty.
Storage
Photocatalytic filter for replacement
∞Type: MJPR-10TXFT
∞Type code: 5C5 815
For these items contact your nearest Mitsubishi
Electric dealer.
Parts sold separately
Replacing the photocatalytic filter
Although the photocatalytic filter lasts roughly 2
years, replace it when:
¡You have soaked the filter 8 times.
¡The photocatalytic filter has turned brown due
to cigarette smoke or black with dust.
Filter life differs on usage and environmental
conditions.
When disposing the unit
Dispose according to the garbage regulations in
your district.
¡Photocatalytic filter
Material: PET and PS
¡Unit
Do not disassemble. Dispose according to the
garbage regulations in your district.

17
7. Wiring Diagram and Block Diagram
7.1 Wiring Diagram
(1) Current fuse ....................Overcurrent flow caused by deterioration in electrical parts or other problems
turns the power source to OFF.
<Current setting: 2A>
(2) Motor protector................The compressor stops operating if the room temperature exceeds 35°C.
(Overload relay) The compressor will also shut down when malfunctions or other problems
cause the current flow to exceed 5.3A.
(3) Control circuitry ...............The room temperature thermister senses temperature below about 0°C, and
shuts down the compressor.
(4) Thermal fuse ...................When blower motor temperature exceeds 133°C due to blower locking or other
malfunctions, blower operation shuts down.
Safety Devices
P1 P11
P20
P100
P2 P3P5
P4
FM
S
C
R
CM
P200
P10
P13
SV
P201
P 101
SM
White
White
Orange Orange
Red Red
Thermistor (Tube
temperature sensing)
1°C (defrost)/12°C (end)
Sensors
(Humidity and room
temperature sensing)
Power supply board
Blue
Brown
Gray
Gray
Gray
Gray
Blue Blue Blue
Black
Gray
White
Red
Yellow
Control board
Tank full switch
Power plug
Stepping motor
Run capacitor
Overload relay
Compressor
Solenoid valve
Fan motor

18
7.2 Function List
Compressor
Blower
Solenoid valve
Swing louvre
Power
Selection
Air Purifier
Tank full
Drying inside
Humidity (set/current)
Operation mode
Swing area
Swing monitor
On/off timer
Mildew guard
Defrost
Low temp
Child lock
Operation
Auto
Operation switch
Selection
Air purfier
Swing louvre
On/off timer
Drying inside
Child lock
LCD indicator LED indicator
Switch
Child lock Operation off Auto Mildew guard Low Temp Laundry
Easy dehumidifying
Tank full Air purifier
Drying inside
Defrost Off timer on On timer being set On timer counting
Low
Operation mode
Dehumidifying operation
Note : Display lamp/Operable
: Timer – flashes when on
: Off/stopped/inoperable
: Operable only when swing on/lit
: Operable only when swing on and blower fan rotates
: LCD lights at each operation mode
: LCD flashes at each operation mode
: Lights at room temperatures of 14°C or under
: Varies by conditions.
: ON LED lit or flashing
: OFF LED lit
ON
OFF

19
<Operation Control>
1Specifications shared at all operation modes
The compressor and blower fan will operate for about 6 minutes after turning on the operation switch or
activating the compressor, regardless of humidity or temperature levels.
2Humidity set operation
Compressor and blower fan operation will switch by current humidity and set temperature.
3High, Low, Low Temp, Mildew Guard, Air Purifier
Compressor
ON
Rank 1
Rank 1 Rank 2
Rank 2 Rank 5
Rank 5
Rank 0 Rank 0 Rank 0
27°C29°C
ON
OFF
Current humidity
– Set humidity
Decline in
current
humidity
+3%
–1%
34°C36°C
+5%
+1%
Rise in current
humidity
Fan temperature table
Mildew Guard
Low Temp
Low
Air Purifier
ON
ON
ON
Compressor
OFF
Rank 1
Rank 1
Rank 1
Rank 4
Rank 6
Rank 2
Rank 2
Rank 1
Rank 5
Rank 5
Rank 5
Rank 1
Rank 2
Rank 1
Rank 1
Rank 1
Fan temperature table
27°C29°C34°C14°C16°C 36°C
4Mildew Guard mode
1. Outline of Control
(a) Lowering the temperature once a day ‘suppresses’ mildew growth.
(b)
The dehumidification time changes depending on how much the temperature was lowered (40%: 2 hours, 50%: 4 hours).
2. Under the following conditions, mildew guard will clear the time count and restart with initial settings.
Mildew guard starts with dehumidifier operations by turning ON the compressor and fan regardless of the present
humidity or time.
(a)
The power is turned ON when mildew guard is selected (i.e.: power button is turned ON or ON timer time is reached).
(b) Mildew guard is selected with the MODE button.
(c) Mildew guard is reactivated by operating the air purifier button (Air purifier ON →OFF).
(d) Mildew guard is run for 24 hours.
3. While mildew guard is operating, the dehumidifier is deactivated under the following conditions.
(a) Current humidity below 35% detected followed by 2 hours of below 40%.
However, the accumulated time is cleared if the current humidity breaches 41% for 3 consecutive minutes during the count.
(b) Current humidity below 45% detected followed by 4 hours of below 50%.
However, the accumulated time is cleared if the current humidity breaches 51% for 3 consecutive minutes during the count.
4. After being deactivated in step 3, if the humidity level reaches 71%, the dehumidifier is automatically activated and runs
until the level drops below 65%. Below 65%, the dehumidifier remains deactivated until the humidity level again reaches
71% (limiter dehumidifier operation).
5. Mildew guard mode is disabled in the following cases.
(a) The mode button is used to activate Low Temp mode.
(b) The selection button is used to activate the previously set mode (easy dehumidifying/laundry).
(c) The air purifier button is used to activate air purifier operation.
2HR 2HR
4HR4HR
45%
Elapsed time
35%
Elapsed time
Humidity level
Compressor
Blower
Mildew
Guard
ON
Below 45%
time count
start
Below 35%
time count
start
Below 35%
time count
stop
Dehumidifier
activated
Below 35%
time count
start
Dehumidifier
deactivated
Dehumidifier
deactivated
Dehumidifier
deactivated
Accumulated
time counts
reset
65%
45%
40%
35%
24HR
75%
ON
OFF
Below
45%
Below
35%
3 minutes
above 41%
elapse
Limit
71%
Limit
recovered 65%
Target part Compressor Airflow fan Solenoid valve Louvre
Operation ON/OFF Rank control OFF ON/OFF

20
5Easy Dehumidifier
1. Controls
(a) Adjusts humidity according to room temperature for increased comfort.
(b) CIRCULATION mode is activated when the temperature is high and the humidity is low. This mode keeps the
compressor off.
(c) Switches temperature table every 60 seconds to prevent the blower from turning on and off at the 3-minute restart for
the coloured section in the chart above. (51% – 59%)
(d) When the room temperature is above 29°C (temperature rising) or 27°C (temperature decreasing), CIRCULATE
mode operates with the humidity below 50%.
(e) The unit activates the dehumidifier when the humidity rises above 60%, and returns to CIRCULATE mode when the
humidity drops below 50%.
0
60%
ON
ON
OFF OFF OFF OFF
ON
ON
60% 60%50% 50%
50%
12 3
Current humidity
– Set humidity
20°C 27°C 34°C
+3%
–1%
+5%
+1%
Temperature
Temperature table
Set humidity
Dehumidification
Fan rank
Compressor
Fan rank
Compressor
Fan rank
Compressor
22°C 29°C 36°C
Rank 3
Rank 1
ON
ON
Rank 3
Rank 1
Rank 3
Rank 2
ON
ON
Circulate
To
Dehumidifier
mode
To
Dehumidifier
mode
Rank 4Rank 0Rank 0 Rank 5
To
Circulate
mode
Rank 5
Rank 5
To
Circulate
mode
Dehumidifier mode
Circulate
Dehumidifier modeDehumidifier modeDehumidifier mode
Circulate
set humidity 60% Dehumidifier mode set humidity 50% Circulate set humidity 60%
Set humidity 60% Set humidity 50%
ON
OFF
ON
OFF
50%
60%
Humidity
Compressor
Blower
~20°C~ ~27°C~Temperature
Target part Compressor Airflow fan Solenoid valve Louvre
Operation ON/OFF Rank control OFF ON/OFF
2. Easy DEHUMIDIFYING mode is disabled in the following cases.
(a) The MODE button is used to activate the previously set mode (EASY DEHUMIDIFYING, HIGH, LOW, AUTO, MILDEW
GUARD, LOW TEMP).
(b) The selection button is used to activate LAUNDRY mode.
(c) The air purifier button is used to activate AIR PURIFIER mode.
Room
temperature
Humidity Set humidity
60%
Set humidity
50%
When 60% exceeded,
lowers to below 50%
Compressor
OFF
Fan rank 0
Compressor
OFF
Fan rank 0
CIRCULATE mode
60%
50%
20°C 27°C