Mitsubishi Electric MJ-E14EG-S1-IT Bedienungsanleitung

2013

DEHUMIDIFIER

SERVICE MANUAL

Model MJ-E14EG-S1-IT

No.MJW-E-13020

Sold from 2014

CONTENTS

1. Precautions 2

2. Names and Functions of Parts 4

3. Specifications 5

4. Outer Dimensions 5

5. Wiring Diagram 6

6. Function 7

7. Technical Points 8

8. Precautions for failure diagnosis 9

9. Troubleshooting Procedure 10

10. Troubleshooting 18

11. Maintenance 20

12. Service Checklist 21

13. Precautions for Disassembly and Reassembly 22

14. Disassembly and Reassembly Hints 24

15. Parts Catalog 34

1. Precautions

Note) This page is extracted from the instruction manual.

2. Names and Functions of Parts Note) This page is extracted from the instruction manual.

3. Speciﬁcations

4. Outer Dimensions

Note) This page is extracted from the instruction manual.

238

160 80 210

360

534

P3 P6 P12P13

HUM.S

P9 P11 P20 P21

P100 P101

P30 P50

P15

VDD GND

P40

CRS

Operation control

board

Control boardPower supply board

5. Wiring Diagram

1) Wiring Diagram

2) Board Diagram

[Operation control board]

[Power supply board]

[Control board]

Com-

pressor

Capacitor for

compressor Fan Solenoid

Valve

White

Red

Gray

Black

Yellow

Blue

Yellow/Green

Blue

Brown

Power plug

Humidity

sensor

Room

temperature

sensor

Thermopile

(Move Eye)

Ambient

tempera-

ture

Object

tempera-

ture

Float switch

Gray

Blue

White

Gray

Tube

temperature

thermistor

Stepping

motor

(left/right)

Stepping

motor

(up/down)

6. Function

Function List

Operation Off

Operating mode

Laundry

Mildew guard

Low

High

Auto

Defrosting

detection

Tank full

detection

(Dehumidify)

Tank full

detection

(Move Eye)

Tank full

protection

Drying inside

ON timer setup

in progress

ON timer setup

complete

Blower fan OFF ON ON ON ON

ON/OFF

ON ON ON OFF

ON/OFF

OFF OFF

Compressor OFF ON ON ON ON

ON/OFF

OFF OFF OFF OFF OFF OFF OFF

Up-down louvre

ON ON *1 *1 *1*3 *1*4 *1 ON OFF Top

centre

CLOSE CLOSE

Left-right louvre Centre ON ON *2 *2 *2*3 *2*4 *2 ON OFF Centre Centre Centre

LED indicator

POWER

Flashing

FULL

DRYING INSIDE

LCD indicator

7-segment

Current humidity display (3-second display of set humidity only when SELECTION is selected)

Operation mode Selected operating mode lamp lit

Flashing

Lit

MOVE EYE *4 *4 *4

TIMER Set OFF timer time display

ON timer time display

Up-down swing area

*1 *1, *5 *1 *1 *1

Up-down swing monitor

Left-right swing area

*2 *2, *5 *2 *2 *2

Left-right swing monitor

CHILD LOOK Lit when child lock is ON

Switch

POWER

MOVE EYE *6 *6

DEHUMIDIFY *6 *6

SWING *5 *5 *5

DRYING INSIDE

TIMER *7

CHILD LOCK

*1: Operates when ON is selected for the up-down louvre. Stops when OFF is selected.

*2: Operates when ON is selected for the left-right louvre. Stops when OFF is selected.

*3: Operates when the blower fan is running

*4: Can only operate when using MOVE EYE (LAUNDRY, MILDEW GUARD) mode.

*5: Can only operate when using DEHUMIDIFY (LOW, HIGH, AUTO) mode.

*6: Operation mode moves to “tank full protection” when the switch is pressed.

*7: Can operate as the ON timer setting

: Lit/Can operate

: Unlit/Stopped/Cannot operate

When MOVE EYE is to be turned OFF (MOVE EYE operating mode only)

If MOVE EYE is to be turned OFF when it is in MOVE EYE operating mode, turn the power OFF and press

the MOVE EYE switch for at least 3 seconds.

Follow the same procedure to turn operations ON.

MOVE EYE is ON at the time of factory shipment.

This dehumidiﬁer remembers whether MOVE EYE is ON or OFF.

Even if the power plug is pulled out or power is turned OFF, operations start with the same setting that

was previously set.

7. Technical Points Note) This page is extracted from the instruction manual.

8. Precautions for failure diagnosis

The following precautions should be observed in order to perform troubleshooting safely and correctly.

The following diagrams indicate circumstances where danger can result from mishandling the unit.

WARNING

Mishandling may result in fatal or serious injury, or ﬁre.

CAUTION

Mishandling may result in injuries or damage to your home or property, etc.

Forbidden Always follow the

instructions Alert

Meanings of graphic symbols are explained below.

Remove the power plug

from the socket.

Failure to do so may cause electric shock or injuries.

When performing work with

the power on, be careful not

to touch the live part.

This may cause electric shock.

Do not touch a rotating object

until it completely stops.

The rotating object may catch your hand etc,

and result in injuries.

Do not work with wet hands.

This may cause electric shock.

Check the wiring diagram

before wiring processing.

Failure to do so may cause combustion,

generation of smoke, and/or malfunction.

After the work,

lay the wire out as it was before.

Failure to do so may cause combustion,

generation of smoke, and/or malfunction.

Unplug Electric shock

Don't touch No wet hands

Check Return to

as it was

WARNING

Wear protective gloves.

Failure to do so may result in injuries

by the edge of metal, electric shock,

and/or burns caused by contact with hot section.

Keep children away.

Failure to do so may result in

electric shock and/or injuries when moving

the unit or using a measuring device.

Wear gloves Keep away

CAUTION

9. Troubleshooting procedure

1) Failure diagnosis ﬂowchart

Do any of the following

errors appear on the

humidity indicator?

“E0” “E1” “E2” “E3” “E4”

“E5” “E7” “E8” “A1” “A2”

“A6” “A8” “P4”

Perform the recommended

actions described in “Error

Indications and Corrective

Actions” on page 16.

Check the continuity of current

fuse on the power supply board

FUSE1 : 10A FUSE2/3 : 2A

CHILD LOCK indicator

turns on

When the POWER switch is

turned ON, does the operating

mode lamp turn on?

Deactivate the child lock

Check the power cord conduction

Replace the power cord

Replace the power

supply board

Does the detection buzzer

beep when the POWER

switch is turned ON?

Check if the lamps on the

control panel turn on.

* How to turn on all of the

lamps (See “LED and

Monitor indicators” on

page 17)

* Check whether any of the

LEDs on the operation

control board have fallen

off (repair if an LED has

fallen off)

Check that the power

supply board, control

board and operation

control board connectors

are ﬁrmly connected

(carefully check whether

any of the connector pins

have been pulled out,

etc.).

Firmly insert the

connectors or

connector pins in

the trouble spots

Replace the operation

control board

Replace the control

board

Replace the power

supply board

Is the FULL lamp lit? Is the tank full?

Drain the water from the tank

Float check:

• Is the ﬂoat switch disconnected

or installed reversely?

• Is the ﬂoat operation smooth?

• Is there a magnet attached

to the ﬂoat?

Repair the ﬂoat problem

Check the ﬂoat switch

• Check the control board

P12 connector insertion

and the connector pins

• Check the continuity

between the P12

connector terminals when

the water tank is installed

Normal . . . When tank is

full: shorted

When tank is empty: open

Replace the ﬂoat switch

Replace the control board

Replace the power

supply board

YES

YES YES OK

NG NG

NGNO

NG OK

YES

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