Mitsubishi Electric MR-CU375S-W-A, MR-CU375S-W-ANZ, MR-CU375S-ST-ANZ, MR-CU375S-ST-A, MR-CU375SL-W-A Service Manual

Changes for the Better

Models

CONTENTS

A………….......Australia

A(NZ)...............New Zealand

1. SPECIFICATIONS....................................................

2. OUTLINES AND DIMENSIONS..................................

3. WIRING DIAGRAM....................................................

4. REFRIGERANT CIRCUIT...........................................

5. NAMES OF THE PARTS...........................................

6. TROUBLE SHOOTING..............................................

6.1 TROUBLE CRITERION OF MAIN PARTS.......

6.2 FUNCTION OF OPERATION PANEL..............

6.3 FLOW CHART OF SELF-CHECK....................

6.4 TEST POINT DIAGRAM OF MAIN CONTROL

BOARD........................................................

7. DISASSEMBLY INSTRUCTIONS...............................

8. PARTS LIST............................................................

1
3
4
6
7
8
8
11
12

15
16
21

MR-CU375S-W-A
MR-CU375S-ST-A
MR-CU375S-W-A(NZ)
MR-CU375S-ST-A(NZ)
MR-CU375SL-W-A
MR-CU375SL-ST-A
MR-CU375SL-W-A(NZ)
MR-CU375SL-ST-A(NZ)

2006

SERVICE MANUAL

NO.SM-RE-0605

MITSUBISHI
ELECTRIC

HOME REFRIGERATORS

1-1 SPECIFICATIONS
MR-CU375S/SL-A

MR-CU375S/SL-A(NZ)

Power supply

Total capacity L

Dimensions (HXWXD) mm. 1655 x 600 x 639

Cabinet Acrylic resin coated steel

Food liner ABS resin

Cabinet Foamed cyclopenthane

Refrigerator door Foamed cyclopenthane

Vegetable door Foamed cyclopenthane

Freezer door Foamed cyclopenthane

Cooling system

Freezer Forced air convection

Refrigerator 3 way air flow

Evaporator Fin and tube type

Condenser Concealed type

Defrost system Automatic (Defrost heater )

Drain Automatic (drainage)

Temperature control system Automatic control

Refrigerator room light 240V, 15W (E12)

Ice spoon 1 pc.

Slide chilled case (UP) 1 pc.

Slide chilled case (LR) 1 pc.

Freezing case (UP)

1 pc.

Freezing case (LOW)

1 pc.

Crystal shelf (R)

1 pc.

Top plate

1 pc.

Slide shelf

1 pc.

Free pocket (M) 2 pcs.

Tube stand 1 pc.

Egg case 1 pc.

Bottle pocket 1 pc.

Vegetable case 1 pc.

Vegetable case cover

1 pc.

Drain pan 1 pc.

Fruit case 1 pc.

Water tank 1 pc.

Kick plate 1 pc.

Weight

Unit kg 69

Shipping kg 76

1 SPECIFICATIONS

- 1 -

Insulation

Accessories

GROSS (AS) 376 (R : 198 V : 111 F : 67)

230-240V 50Hz

1-2 ELECTRICAL PARTS SPECIFICATION
MR-CU375S/SL-A

MR-CU375S/SL-A(NZ)

Model ESS60C11RAW
Power supply 220-240V, 50Hz

Compresso

r

Rated input W 116/118 (220/240V 50Hz)
Starting current A 8.49/9.31 (220/240V 50Hz)
Running current A 0.57/0.55 (220/240V 50Hz)

Winding resistance (A.T. 20

o

C)

17.9

Ω(Main) / 15.1 Ω(Aux)

PTC RELAY PTH7M330MD2

Model 5TM222NHBYY-53

Motor protecto

r

Ambient temperature

o

C

25
Time Sec. 16 MAX
Current A 6.7

Running capacito

r

4µF 400VAC

Capillary tube mm.

∅ 1.8 X ∅ 0.65 X 2350

Dehydrant Molecular sieve g 10
Refrigerant HFC. 134a g 220
Compressor oil g

Defrosting timer Control board
Defrost finish

o

C

Thermister 14 +

1.5

Thermal fuse

o

C

73
Defrost heater

Not equipped
Model UDQM002B3
Type DC brushless
Number of poles 10P
Input W 2.4 (12V DC)
Revolution r.p.m 1520(12V DC)
Model UDQM004B3
Type DC brushless
Number of poles 10P
Input W 1 (12V DC)
Revolution r.p.m 1200(12V DC)
Vegetable case heate

r

W6

Water pipe heate

r

W0.9

Drain pipe heate

r

W6

Freeze

r

Refrigerato

r

Dial position ON OFF OPEN SHUT
LOW

o

C

-16.0 -21.9 7.0 5.8

MID

o

C

-18.4 -24.3 5.1 3.8

HI

o

C

-21.1 -27.1 3.2 1.9

186 (FREOL ∝ 10)

Refrigerator

384 Ω (240V, 150W)

- 2 -

Defrosting control

Deodorizing function of defrost heater

Thermistor RThermistor F

Fan motor

Heater

Machine
Chamber

Temperature control

MR-CU375S/SL-A

Unit : mm

MR-CU375S/SL-A(NZ)

- 3 -

2 OUTLINES AND DIMENSIONS

MR-CU375S/SL-A

(SKELETON WIRING DIAGRAM)

MR-CU375S/SL-A(NZ)

3 WIRING DIAGRAM

- 4 -

(ACTUAL WIRING DIAGRAM)

Remark GY = GRAY BK = BLACK BR = BROWN

W = WHITE OR = ORANGE

R = RED Y = YELLOW

SB = SKY BLUE YG = YELLOW GREEN

P = PINK LG = LIGHT GREEN

LB = LIGHT BROWN BY = BRIGHT YELLOW

V = VIOLET B = BLUE

- 5 -

THERMALFUSE（73°

7 6 5 4 3 2 1

LL

BUZZER&
THERMISTORA.T

REFRIGERATORROOM

9
8
7
6
5
4
3
2
1

R
Y

SB

GY
BY
BK

8
7
6
5
4
3
2
1

R
Y
SB
GY
BY
BK

W

W

R

Y
SB
GY
BY
BK

OR

SB

THERMISTORR

MOTORDAMPER

MD

1
2
3
4

1
2
3
4

R

Y

B

BR

1
2
3
4
5
6

R

Y

B

BR

R

Y

B

BR

FM

FANMOTOR

BK

V
LB
BY

1
2
3
4

BK

V
LB
BY

BK

V
LB
BY

ROOMLIGHT

1
2

YORY

GY

2
1

GY

W

GY

W

4
3
2
1

1
2

LB
LB

LB

LB

LB

LB
R
B

YG

P

M

WATERPUMP

DOORSW.R

C）
VEGETABLE
ROOM

DEF.THERMISTOR

DEF.HEATER

1
2

1

W
W

W

W

P

SB

R

WATERPIPEHEATER

1
2

1
2

1
2
3
4
5
6
7
8
9
10

1
2

LB
LB

LB
LB

LB

R

GY

R

GY

YG

SBBK

BK

SB

SB

SB

SB

SB

SB

SB

B

B

LG

LG
GY

GY

W

W

P

P

VHEATER

DOORSW.F

FREEZER
ROOM

THERMISTORF

THERMISTORI

GEARBOX

6 5 4 3 2 12 1

DRAIN
HEATER

WW

B

SB

W

GYGY

W

PTC
THERMISTOR

OUTER
FANMOTOR

1 2 3 4

Y

GY

GY

Y

MOTORPROTECTOR

FM

V

BK

OR

LG

4
3
2
1

CN10

12
11
10
9
8
7
6
5
4
3
2
1

V

BK

GY

B

BY

BR

LB

Y

P

R

W

YG

CN4

11
9
7
5
3
1

YG

SB

Y

7
5
3
1

R
W

GY

18
17
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1

SB

LB

P

LG

OR

SB

B

Y

R

BY

GY

BK

V

GY

R

W

5
4
3
2
1

3 1

B

BR

CN3

CN2

CN7

CN9

CN1

R

W

V

GY

SB

TEMPCONTROL

W
V

W
V

W

REFRIGERATORDOOR

LG

OR

BK

V

1

2

GY

GY

W

W

2

1

R

DIODE

W

CONTROLBOARD

VEGETABLEDOOR

FREEZERDOOR

W

R

P

SB

YB

W

W

SBLGGY

MR-CU375S/SL-A
MR-CU375S/SL-A(NZ)

MR-CU375S/SL-A
MR-CU375S/SL-A(NZ)

- 6 -

4 REFRIGERANT CIRCUIT

MR-CU375S/SL-A
MR-CU375S/SL-A(NZ)

- 7 -

5 NAMES OF PARTS

Fruit case

Vegetable case

Water tank

Ice box sheet

Ice spoon

Freezing case (UP)

Freezing case (LOW)

Vegetable case room

Auto ice making

Freezer room

Free pocket (M)

Egg case

Tube stand

Bottle pocket

Crystal shelf (R)

Slide shelf

Thermo dial (R)

Slide Chilled case (UP)

Slide chilled case (LOW)

Top plate

Kick plate

Drain pan

6.1 TROUBLE CRITERION OF MAIN PARTS
MR-CU375S/SL-A

MR-CU375S/SL-A(NZ)

Compressor

Measure the resistance with a tester.
(Ambient temperature:Room temperature 15

o

C ~ 25oC)

Measure the resistance with a teste

r

Open
Close

Opened (∞ Ω )

PTC Relay

PTH7M330MD2

Measure the resistance with a tester.
(Ambient temperature:Room temperature 15

o

C ~ 25oC)

Normal

As PTC Relay has been heated while refrigerator is running be sure
to measure the resistance after the thermistor has got cool enough.

33 Ω (Approx.)

Abnormal(faulty)

Opened (∞ Ω ) or Short (0Ω)

Rated input W 116/118 (220/240V 50Hz)

Short (0Ω )

15.1 Ω (Approx.)

Normal

Main wiring

A

Starting current

chamber at the
rear side of

0.57/0.55 (220/240V 50Hz)

A 8.49/9.31 (220/240V 50Hz)

Running current

Measure the resistance with a tester.(Ambient
temperature:Room temperature 15

o

C ~ 25oC)

69 + 9o C

Abnormal

(faulty)

5TM222NHBYY-53

Opened

(∞ Ω )

or

Short (0Ω)

120 +

5o C

Connected

Point

Normal

17.9 Ω (Approx.)

Auxilliary wiring

Run capacitor

4 µF

Rated input

Motor

protector

400VAC

Abnormal(faulty)

Model

the frame

the frame

In the control
panel of the
rear side at
compressor
room

Compressor in
the machine
chamber at the
rear side of
the frame

- 8 -

Model

Normal

Abnormal(faulty)

Less than 1Ω

rear side of

chamber at the

the machine

Compressor in

6

Components
/ Part Name

TROUBLE SHOOTING

Model

Parts

Mounted

Position

Check Method and Criterion

ESS60C11RAW (220-240V 50Hz)

Compressor in
the machine

Auxilialy
wiring

Main
wiring

5

6

3

2

5

6

2

3

1

3

Therminal check point

Measure the resistance with a tester.(Ambient temperature: Room temperature 15oC ~ 25oC)

Measure the resistance with a tester.(Ambient temperature: Room temperature 15

o

C ~ 25oC)

Measure the resistance with a tester.(Ambient temperature: Room temperature 15

o

C ~ 25oC)

Normal

Abnormal (faulty)

Measure the resistance with a tester.(Ambient temperature: Room temperature 15oC ~ 25oC)

Number of pole

DC brushless

Diameter

∅ 140 (Diagonal fan)

In the machine
chanber at the rear
side of the frame.

UDQM004B3

Model

Number of pole

DC brushless

Diameter

∅ 140 (Diagonal fan)

Open (∞Ω) or

short circuit (0Ω)

Motor
damper for
refrigerator
compartment
slide
compartment

In the fan grille of
the refrigerator
compartment.

Normal

415 Ω

(Approx.)

Model

Normal

Between 1 - 4 (GND
and IC Power ) :
About 12k Ω

- 9 -

Under the water
tank holder in
refrigerator
compartment.

Open (∞ Ω )

or short

circuit (0Ω)

Abnormal

(faulty)

Winding
(Blue-White,
Red-Yellow)

Water
pump motor
(DC 5V)

16 Ω (Approx.)

In the fan grille of
the refrigerator
compartment.

Refrigerator
fan motor

UDQM002B3

Machine
chamber
fan motor

Normal

Abnormal (faulty)

B

etween 1 - 4
(GND and IC
Power ) : About

9

k Ω

Between 1-4 : open( ∞

Ω ) or

between 3-4 : short ( 0 Ω)

Abnormal (faulty)

Between 1-4 : open( ∞

Ω ) or

between 3-4 : short ( 0 Ω)

Check Method and Criterion

Parts Mounted Position

Components/

Part Name

IC power
Power

GND

FG

IC

Pin no.

1
2
3

4

123

4

IC power
Power

GND

FG

IC

Pin no.

1
2
3

4

123

4

Yellow

Red

Blue Brown

Measure the resistance with a tester.(Ambient temperature:Room temperature 15oC ~ 25oC)

Measure the resistance with a tester.

(Ambient temperature:Room temperature 15oC ~ 25oC)

Measure the resistance with a tester according to t he f ollowing graph.
(Thermistor resistance values against temperature)

Resistance measured under the ambient temperature from - 50

o

C to +50 oC

1. 200 Ω to 500kΩ ............normal

2. Out of the above range ............abnormal

(kΩ)

Thermistor Check Procedure

Thermistor resistance will vary
with the change of temperature.
Take the temperature ar ound t he
thermistor, and then m easur e
thermistor resistance using a

tester.

The relation between resistance

and temperature is as shown on
the left side.

Trouble shooting with self-check

(1) If the self - check indicates the abnormality of thermistor right after the power is
turned on, measure the resistance of the thermistor.

If the circuit of thermistor is short , check the element of the thermistor and the
contact of the connector.
(2) When the self - check indicates the abnormality of thermistor a few seconds
after the power is turned on , check the contact of the connector.

Check Method and Criterion

Parts Mounted

Position

Components/

Part Name

384Ω (Approx.)

- 10 -

Rated input 150 W

operation method

Power ON after defrosting

(14 + 1.5oC or more)

Thermistor

Opened ( ∞ Ω )

Defrost
Heater

(Out air thermistor)

In the buzzer board
(check board)

(Defrost
thermistor) To the

cooler at the back of
vegetable
compartment

(Freezer
compartment
thermistor and Ice
making tray
thermistor) In Ice

maker of freezer
compartment

Abnormal (faulty)

(Refrigerator
compartment
thermistor) In the

control panel of
refrigerator
compartment

Water pipe
heater

Normal

Abnormal (faulty)

1.3 kΩ (Approx.) Open (∞ Ω )

Normal

At the left
bottom of
vegetable
compartment

The heater is turned on when th e temperature of tray
for automatic ice mak i ng tray is about 10

o

C or less

Operation method

In the drip tray
under the
evaporator of the
freezer
compartment

-20

20 30

-10

0

10

30

20

15
10

5
0

25

35

Thermistor resistance valves against
temperature

Temperature

Black

Black

Outside air thermistor

Refrigerator
compartment,
Freezer
compartment,
Defrosting,
Ice making

Inner
thermistor

13,14

11

6.3 FLOW CHART OF SELF-CHECK

(1) Trouble shooting with self-check

This refrigerator has self-check feature to clarify and indicate where & what the trouble is. It can be checked that
there is something wrong with electronic circuit and electric parts.

Remark

(2) Timing of self-check

 Defrost heater and related parts :

Self-check is conducted after defrosting.(Make sure to confirm the display before unplugging
because it is automatically reset once the power cord is pulled out.)

 Ice maker and related parts :

To check the ice- making and then, check the blink amount of LED see the reference as (3)

 Fan motor and related parts :

To check the blink amount of LED see the reference as (3)

 Thermistor and related parts :

Self-check is continuously working.

Caution: The self-check will automat ic start to begin power supply. But in the portion of the abnormality show the detail as (3) .

And the caution checking couldn't be summar ized, please use self- c heck means by using operation panel.

- 12 -

Self-check

Press Ice making stop button

Was trouble

displayed?

Locate the trouble according to

LED indication.(See page13,14)

Disconnect power plug

Repair/replace defective part(s)

according to LED indication

Connect power plug ∗

Press Ice making stop button

Self-check ,Ice making stop
LED blink during the operational
test of automatic ice maker.

Check the parts whose
Abnormalities cannot be
detected by self-check.
(Remark.1)

Is error no

longer

displayed?

Self-check is finished.

Slide room

Refrigerator room

Ice making

stop LED

Refrigerato

r

Freeze

r

Ice maker of

f

No

No

Yes

Yes

∗

Wait 10 minutes

before inserting the cord
once it's unplugged.(If
the cord is plugged in
within 10
minutes,trouble may be
display.)

During the ice making test
mode,watch the operation of ice
maker gear box and water pump
in refrigerator.

Is trouble no

longer displayed?

No

1.) Self-check cannot detect abnormalities of the
following parts. See page 10~12 for trouble
criterion of main parts.

- Freezer & refrigerator door sw NG

- Thermo heater NG ( Water pipe / Vegetable
case heater etc.)

- Motor damper NG (See page 12.)

- Water pump motor NG (See page 12.)

2.) If the abnormality is found when power is
turned on, compressor and fan motor will be
suspended for 20 minutes.

(3) LED trouble display and the check point

(3.1) LED trouble display : follow the procedure of "self check method
and its operation" at page 11. Trouble is indicated by the blinking number

of ice making stop LED.

∗ When several troubles occur

,

smaller blinking number of LEDs has to be indicated first.

(3.2) Check point and treatment

Normal

1. Normally display and the Auto ice-maker
system display.

* If non-power supply, it'll show as same

the effect.

Auto ice maker NG

1. The connector lead wire of Auto ice maker 1. Check all points of the Auto ice maker
is not orderly. connector lead wire. May be un-lock

and struck insert.

2. 2.

3.

3. PCB plate ( Ref Con assy) NG

Thermistor(I) NG

1.

The connector thermistor (I) lead wire 1.

Check all points of the thermistor (I)

isn't orderly.

connector lead wire, may be unloc

k

and struck insert.

2.

Thermistor (I) NG (break or short) 2.

If the resistance of thermistor (I) is NG,
should be changed the thermistor and
re-check the resistance.

3.

PCB plate (Ref Con assay) NG 3.

If the resistance is OK,should be changed
PCB plate (Ref Con assy and re-check
the resistance).

Thermistor (F) NG

1. The connector thermistor (F) lead wire 1.

Check all points of the thermistor (F)

isn't orderly.

connector lead wire, may be unloc

k

and struck insert.

2. Thermistor (F) NG (break or short) 2.

If the resistance of thermistor (F) is
NG,should be changed the thermistor and
re-check the resistance.

3. PCB plate (Ref Con assy) NG 3.

If the resistance is OK,should be changed
PCB plate (Ref Con assy and re-check
the resistance.

Thermistor (DEF) NG

1. The connector DEF. thermistor lead wire 1.

Check all points of the thermistor

isn't orderly.

(DEF) connector lead wires, may be
unlock and struck insert.

2. Thermistor (DEF) NG (break or short) 2.

If the resistance of thermistor (DEF) is
NG,should be changed the thermistor and
re-check the resistance.

3. PCB plate (Ref Con assy) NG 3.

If the resistance is OK,should be changed
PCB plate (Ref Con assy and re-check
the resistance.

Defrost heater NG

1. 1.

2. Defrost heater break or 2.
Thermal fuse break.

and thermal fuse.

3. PCB plate (Ref Con assy) break. 3.

If the resistance is OK,should be changed
PCB plate (Ref Con assy and re-check
the resistance.

-13 -

isn't orderly.

maker.
Replace and re-check the PCB plate

and non-display)

connector lead wire, may be un-lock

Blink

Blink

Light

Light

Light

1 Blink

No Light

Display function of LED

Off

NO

Function Explanation

Light

No Light

Detecting method and corrective NG points

2 Blinks

Check the resistance of the defrost heate

r

and struck insert.

3 Blinks

Light

No Light

No Light

No Light

0.1 second

0.3 seconds

No Light

Replace and re-check the Auto ice

( Ref Con assy)

A

uto ice maker (Motor's not rotate

The Defrost heater connector lead wire

Check all points of the defrost heater

Light

0.1 sec

5 sec

1

1

5 sec

1 2 1 2

5 sec

1 2 13

1 Cycle

0.1 sec

0.3 sec 0.3 sec

0.3 sec

1 Cycle

0.3 sec

1 Cycle

0.3 sec

Slide room

Refrigerator room

Ice making

stop LED

Refri

g

erato

r

Freeze

r

Ice maker off

Thermistor (R) NG

1. The Thermistor (R) connector lead wire

1. Check all points of Thermistor (R) connector

isn't orderly.

lead wire, may be unlock and struck insert.

2. Thermistor (R) NG (break or short)

2. If the resistance of Thermistor (R) is NG,
should be replaced the Thermistor (R) and
re-check the resistance.

3. PCB plate (Ref Con assy) NG

3. If the resistance is OK., should be replaced
PCB plate (Ref Con assy) and re-check the
resistance.

Thermistor (A.T.) NG

1. The Thermistor (A.T.) connector lead 1. Check all points of the thermistor (A.T.)
wire isn't orderly. connector lead wire, may be unlock and

struck insert.

2. Thermistor (A.T.) NG (break or short) 2. If the resistance of Thermistor (A.T) is NG,

3. PCB plate (Ref Con assy) NG should be replaced the Thermistor (R)

and re-check the resistance.

3. If the resistance is OK., should be replaced
PCB plate (Ref Con assy) and re-check the
resistance.

1. DC motor is orderly connected. 1. Check all points of DC motor connector
lead wire, may be unlock and struck insert.

2. DC motor NG (Motor un-rotate and 2.

non-display) re-check display.

3. PCB plate (Ref Con assy) NG 3. If the resistance is OK., should be replaced
PCB plate (Ref Con assy) and re-check the
resistance.

1. DC fan motor is orderly connected. 1. Check all points of DC Fan motor connector
lead wire, may be unlock and struck insert.

2. DC fan motor NG (Motor un-rotated, 2. Replace DC fan motor (Outer motor assy)

and non-display.) and check display.

3. PCB plate (Ref Con assy) NG 3. If the resistance is OK., should be replaced
PCB plate (Ref Con assy) and re-check the
resistance.

PCB plate (Ref Con assy) NG

1. PCB program (Ref Con assy) is NG 1. Replace a new PCB plate (Ref Con assy)

Refrigerant circuit is NG.

1. Pipe cracked (Welding joint) 1. Check and corrective to each problem.

2. Gas leak

3. Compressor NG

Remark :

1.) For the refrigerator is NG more than one case, will show as the first symptoms before, such as Thermistor (F) NG (1 blink in 0.3 seconds) and
Thermistor (R) NG (4 blinks in 0.3 seconds). LED will blink 1 blink in 0.3 seconds until Thermistor (F) was corrected. Then change to 4 blinks in 0.3 seconds
and LED won't blink when Thermistor (R) was corrected.

2.) Ice making stop LED blink during the operational test for ice maker.

3.) Compressor won't work if the fridge have problem and LED blink.

4.) Characteristic value may be changed due to the product improvement.

-14 -

6 Blinks

Display function of LED

Light

No Light

Light

Function Explanation Detecting method and corrective NG points

4 Blinks

Replace DC motor (Fan grille assy) and

Fan motor (Fan grille assy) NG

11 Blinks

Fan motor (Outer motor assy) NG

Light

Light

No Light

No Light

Light

No Light

10 Blinks

No Light

Light

16 Blinks

No Light

19 Blinks

5 sec

1 2 3

1 Cycle

4

1 2 6

1 Cycle

1 2

1 2 10

1 Cycle

1 2

1 2 11

1 Cycle

1 2

1 2 16

1 Cycle

1 2

1 2 19

1 Cycle

1 2

0.3 sec

0.3 sec

0.3 sec

0.3 sec

0.3 sec

0.3 sec

6.4 TEST POINT DIAGRAM OF MAIN CONTROL BOARD
MR-CU375S/SL-A

MR-CU375S/SL-A(NZ)

-15 -

1 = INNER FAN MOTOR VCC

2 = GND

3 = ICE MAKER POSITION SW

4 = DAMPER

5 = INNER FAN MOTOR FG

6 = DAMPER

7 = INNER FAN MOTOR DC+

8 = DAMPER

9 = ICE MAKER AND WATER PUMP FORWARD

10= DAMPER

11= ICE MAKER REVERSE

12 = WATER PUMP DC-

1 = OUTER FAN MOTOR VCC

2 = GND

3 = OUTER FAN MOTOR FG

4 = OUTER FAN MOTOR DC+

1 = 5 V COMMON

2 = DOOR SW

6 = DEF THERMISTOR

7 = ICE TRAY THERMISTOR

8 = R THERMISTOR

9 = F THERMISTOR

11 = ICE MAKER STOP SW

12

14 = ICE MAKER STOP LED

16 = DIAL R

17 = DIAL F

18 = GND

1 = 5 V COMMON

2 = OUTER THERMISTOR

3 =COMPULSION DEF

4 = BUZZER

1 =

3 = 230V AC COMMON 3 = V HEATER 5 = 12V

230 VAC

5 = COMPRESSOR 5 = PIPE HEATER

3 =

7 = DEFROST HEATER 11= LAMP

CN4CN10CN7CN9

CN1 CN2 CN3

+

-

325V DC12V DC

+

-

+

-

5V DC

DISASSEMBLY INSTRUCTIONS

MR-CU375S/SL-A
MR-CU375S/SL-A(NZ)

Plug out before work.
Check the automatic i ce-maker by pressing ice making stop switch.
In assembling & disassembling parts us e several kind of Screw and Rivet. Do not mistake to use them .

1. Detachment Control PCB parts Photo 1

Compressor cover

(1) Detach 7 pcs. of compressor cover sc rews behind the

refrigerator. (Photo 1)

Elect cover

(2) Detach 7 pcs. of Elect cover screws. (Photo 2)

Elect attach Photo 2

(3) Disconnect the connector and remove Elect attach. (Photo 3)

PCB(Ref Con assy)

(4) Remove the catch of elect attach to releas e the PCB plate.

(Photo 3)

Caution on assembly Photo 3

(1) Firmly connect the lead wire and the connector. Ensure the

wire are not pinched.

(2) Please use the new material of sealing insulation when

re-attach.

2. Detachment Lamp cover parts Photo 4
(1) Remove parts inside the refrigerator Shelf 1,2,3 s hel f

Lamp cover inside the refrigerator

(1) Push up the lower catch, and pull the room light cover toward you.
(2) Detach two upper catches to take out the cover (Photo 4)

OPERATING PROCEDURE PHOTOS

7

-16 -

7 fixing screws

Comp cover

Elect

PCB

Catch

Catch

Catch

4 x12

4 x12 (Black) With metal washer

Rivet

A

B

D

C

Rivet

7 fixing screws

Elect cover

Lamp cover

3. Detachment the Vegetable case parts Photo 5
(1) Detach parts inside vegetable compartment (Vegetable case, Fruit case).
(2) Detach the door of vegetable compartment.
(3) Detach rivet (F ) at the right and unhooking 2 catch at front,

(center and left). (Photo 5)

Caution on assembly

Be sure to put vegetable case cover on the catches at the rear of
vegetable compartment.

Water pump motor

(4) Remove two screws and cut the lead wire of water-pump motor to

detach it.

4. Detach the refrigerator room parts Photo 6
(1) Detach parts inside the refrigerator compartment.

(See procedure (2))

(2) Detach parts inside the vegetable compartment.

(See procedure (3))

(3) Detach a left screw of mirror hinge and pull out the lead wire.

(Photo 7)

(4) Detach the connect or.

Control panel ,Duct R, Temperature control panel Photo 7

(5) Remove the upper and lower rivets (F) of right side and unhook 6 catches.

* Remove the right catch before push the control panel to the right
and detach it. (Photo 7)

Fan grille

(6) Remove the following; Screw (A) at the upper and right center,

2 screws (B) at the left and 2 screws (B) at the right.
* Motor damper and thermal fuse are combined with fan grille.
* Fan and fan motor are combined with fan grille.

Caution on assembly

(1) Use new tapes and sealing materials for assembly.
(2) Putting some tape across joints, tape them securely so that they will

not leak the cool air.

(3) Attach a connect or securely in order to prevent contact failure.

OPERATING PROCEDURE PHOTOS

- 17 -

Rivet

Catches

Catch

Catch

Vegetable cave

cover

Vegetable cave

ScrewScrew

Fan grille

F-room

Catch

CatchCatch

Catch

Catch

Catch

Screw

Screw

Screw

Lamp

Rivet

Mirror hinge

Fan grille

Control panel

OPERATING PROCEDURE PHOTOS

r

Defrost heater Drip tray Photo 8

(7) Peel off the tape that f i xes lead wires on t he side wall

of the vegetable compartment. Then take out defrost heater
together with heater roof.
Detach heater roof and Heater cover from Defrost heater.
Detach the drip tray after removing the defrost heater.

Defrost thermistor

(8) Cut the binder and disconnect t he connector. (Photo 9)

Caution on assembly

1) Loosen the lead wire at the defrost heather to prevent
water from entering the glass t ube and careful the
direction for the correct assembly.

2) Attach the drip t ray securely to the lower parts.

3) Attach the defrost thermistor in t he correct place. (If
they're attached out of plac e, thermal characteris tics
will go wrong).

Photo 9

Tape

Defrost

Aluminium tape

Heater roof

Defrost

Evaporato

Drip tray

Heater cover

DEF thermistor

Tape

DEF

4) Attach the lead wires to t he fixture.

5 Detachment the parts in Freezer compartment

(1) Detach the parts inside t he Freezer room (Ice spoon,

Freezing case [upper] and Freezing case [ l ower] ).

(2) Pull the door of Freezer compartm ent by pulling t oward you.

Cover (upper)

(3) Detach 3 catches and remove it.
(4) Disconnect the connec t or.

Automatic ice-maker

(5) push a catch to upper and pull the part to the right

and detach it. (Photo 10)

Photo 10

Cover

Ice corner

Rivet

Catch

Rivet

Catch

F- room

-18 -

OPERATING PROCEDURE PHOTOS

6 Detachment the vegetable compartment parts Photo 11

(1) Detach the door of the vegetable compartment.

Water pipe (lower)

(2) Detach a rivet (E), pipe cover and c onnector. Then

remove the water pipe lower.

Water tank tray

(3) Pull Tank tray to R-room upper and t ake it out together Photo 12

with the water pipe.

Caution on assembly

(1) Fit the water tank tray properly in order to prevent a

water leak.

DOOR SW.

(4) Insert a minus s crewdriver between switch and body

to remove the door switch.

Pipe cover

Vegetable case room

R-room

Water

Tank tray

-19 -

Compressor cover

(1) Remove 7 screws for compressor cover at the back of the refrigerator.

Fan motor of compressor compartment

(2) Detach the Elect cover

(3) Detach the Connector.

(4) Remove a screw that fixed bellmouth. Pull out the whole fan motor and disconnect the terminals.

(5) Pull out the fan from the fan motor.

(6) Detach the lid-fixing screw to take out the fan motor.

7 Detachment compressor.

(1) Collect gas from the charge pipe on the high pressure side.
(2) After collecting gas, cut the charge pipe on the low pressure side.
(3) Detach the welded section of the discharge pipe and suction pipe.
(4) Replace the compressor and the dryer at a time.

Caution on assembly

(1) After attaching the compressor, must to Vacuum and charge gas from charge pipe.
(2) Arrage the piping so that the pipe will not hit each other and compressor cover, (which causes loud noise). Then

attach the compressor cover.

(3) After all the work is complete, be sure to check the cooling preformance and the gas leak from the welded points.

- 20 -

OPERATING PROCEDURE

Keep the clearance between each parts about the big

of fiinger (for 10 -15 mm.)

Attach U washer as the figure shown below

This mark shows welded point.

Heat radiation pipe at the left.

Machine chamber

fan motor

Charge pipe(Low pressure side)

Dryer

W

W

W

W

W

W

W

W

W

W

W

W

Heat radition pipe at the right.

Heat rediation pipe of

flat face flange

Heat radiation pipe at back

Heat radiation pipe at back side

DOOR PARTS

MR-CU375S/SL-A
MR-CU375S/SL-A(NZ)

- 21 -

8 PARTS LIST

1

2

3

4

5

6

13

12

11

10

9

8

7

WSTWSTWSTWST

KIEK96000

<G>

11

KIEK97000

<G>

11

KIEK98000

<G>

11

KIEK99000

<G>

11

KIEK96002

<G>

1111

KIEHB1002

<G>

1111

KIEK96001

<G>

1111

KIEHB1001

<G>

1111

KIEB66746

<G>

1111

KIEEA3746

<G>

1111

5

KIEHJ3151

<G>

FRAME (V)

11111111

6

KIEHJ3157

<G>

FRAME (F)

11111111

7

KIEHJ3118

<G>

FREE POCKET (M)

22222222

8

KIEHJ3115

<G>

EGG CASE

11111111

9

KIEHJ3139

<G>

TUBE STAND

11111111

10

KIEHN8110

<G>

MAGNET GASKET ASSY ( R )

11111111

11

KIEHJ3124

<G>

BOTTLE POCKET

11111111

12

KIEHJ3112

<G>

MAGNET GASKET ASSY ( V )

11111111

13

KIEHJ3111

<G>

MAGNET GASKET ASSY ( F )

11111111

RECOMMEND PART NO. 1,2,3,10,12,13

ABBREVIATION

- 22 -

PRICESPEC

CU375S

A

A

(NZ)

A

Q'TY/UNIT

CU375SL

DOOR V

DOOR F3

A(NZ)

DOOR STOPPER (R)4

RoHS

PART NO. PART NAMENO.

1 DOOR R

2

FRFREEZER ROOM

REFRIGERATOR ROOM

V VEGETABLE ROOM

BODY PARTS
MR-CU375S/SL-A

M

R

MR-CU375P/PL-A(NZ)

- 23 -

1

2

3

4

5

6

7

8

9

10

11

26

25

24

23

22

21

20

19

18

17

16

15

14

12

13

11

WSTWSTWSTWST

1 KIEHN8858

<G>

CONTROL PANEL 11111111

2 KIEHJ3305

<G>

THERMO DIAL (R) 22222222

3 KIEHJ3503

<G>

WATER TRAY ASSY 11111111

4 KIEK96663

<G>

FAN GRILLE ASSY 11111111

KIEHJ3708

<G>

1111

KIEHH5708

<G>

1111

6 KIEHJ3442

<G>

PIPE COVER 11111111

7 KIEHJ3350

<G>

A

UTO ICE MAKER 11111111

8 KIEHJ3652

<G>

COMP COVER ASSY 11111111

9 KIEHJ3328

<G>

ELECT COVER 11111111

10 KIE805794

<G>

CASTER SET 22222222

11 KIEHJ3709

<G>

SCREW LABEL (F) 22222222

12 KIE805795

<G>

CASTER ASSY 22222222

13 KIEC02460

<G>

A

DJUST BOLT 22222222

KIEHJ3705

<G>

11

KIEHH5705

<G>

11

KIEHJ2705

<G>

11

KIEJM7705

<G>

11

KIEHJ3701

<G>

1111

KIEHJ2701

<G>

1111

16 KIEHJ3470

<G>

LAMP COVER 11111111

17 KIEHJ4503

<G>

JOINT PIPE (TANK) 11111111

18 KIEHJ3531

<G>

WATER TANK CAP 11111111

19 KIEHJ3519

<G>

WATER PUMP 11111111

20 KIEK96527

<G>

WATER TANK COVER ASSY

11111111

KIEHJ3702

<G>

1111

KIEHJ2702

<G>

1111

22 KIEHJ3798

<G>

ROLLER 44444444

23 KIEHJ3520

<G>

WATER TANK 11111111

24 KIEHJ3526

<G>

FILTER (TANK) 11111111

25 KIEHJ3442

<G>

COVER (IM) 11111111

KIEKA0730

<G>

1111

KIEKA1730

<G>

1111

27

KIEK96663

<G>

FAN GRILLE 11111111

28

KIEHJ4662

<G>

BELL MOUTH 11111111

29

KIEHJ3320

<G>

FAN MOTOR

UDQM002B3

11111111

30

KIEHJ4321

<G>

FAN (IN) 11111111

31

KIEHJ4682

<G>

DUCT DAMPER 11111111

32

KIEHJ4336

<G>

THERMAL FUSE ASSY 11111111

RECOMMEND PART NO. 4,18, 20,32

ABBREVIATION

ENCIRCLED PART NUMBER ARE NOT SHOWN IN THE FIGURES.

CU375S

A

A

(NZ)

A

Q'TY/UNIT

CU375SL

A(NZ)

- 24 -

NO. PART NAMEPART NO. PRICESPEC

26

RoHS

KICK PLATE

5 LABEL FC

14

HINGE ASSY (UP)15

HINGE ASSY (LOW)21

HINGE COVER

FRFREEZER ROOM

REFRIGERATOR ROOM

IMVICE MAKER

VEGETABLE ROOM

ELECTRICIAL PARTS

MR-CU375S/SL-A
MR-CU375S/SL-A(NZ)

- 25 -

1

2

3

4

5

6

9

10
11

12

13

14

25

26

25

24

23

22

21

20

19

18

17

10

16

15

8

7

WSTWSTWSTWST

1 KIEHJ3313

<G>

THERMISTOR (R) 11111111

2 KIEHD6386

<G>

LAMP SOCKET 11111111

3 KIE402360

<G>

LAMP

E12 240V 15W

11111111

4 KIEHJ3312

<G>

THERMISTOR (DEF) 11111111

5 KIEHJ3378

<G>

THERMISTOR (F) 11111111

6 KIEHJ3365

<G>

WATER PUMP 11111111

7 KIEHJ3469

<G>

GEAR BOX (IM) 11111111

8 KIEHJ3316

<G>

THERMISTOR (I) 11111111

9 KIEHB2354

<G>

PLUG CORD ASSY 11111111

10 KIEHJ3362

<G>

LAMP SWITCH 22222222

11 KIEHJ3364

<G>

WATER PIPE ASSY 11111111

12 KIEK96339

<G>

REFCON ASSY 11111111

13 KIECC9346

<G>

RUNNING CAPACITOR 4µF 400VAC 11111111

14 KIEHJ3662

<G>

BELL MOUTH M 11111111

15 KIEKA0374

<G>

BUZZER BOARD &
THERMISTOR (A.T.)

11111111

16 KIEKA0382

<G>

TEMP CONTROL PANEL

11111111

17 KIEHJ3537

<G>

HEATER ROOF 11111111

18 KIEHP1392

<G>

DEFROST HEATER

240V, 150W NOT

DEODORIZER

11111111

19 KIEHJ3397

<G>

HEATER COVER 11111111

20 KIEHJ3538

<G>

DRIP TRAY 11111111

21 KIEG01340

<G>

MOTOR PROTECTOR

5TM222NHBYY-53

11111111

22 KIEE76330

<G>

PTC RELAY

PTH7M330MD2

11111111

23 KIEHJ3341

<G>

THERMINAL COVER 11111111

24 KIEHJ3321

<G>

FAN (OUT) 11111111

25 KIEHJ3329

<G>

FAN MOTOR BUSH 22222222

26 KIEHJ3325

<G>

OUT FAN MOTOR

UDQM004B3

11111111

RECOMMEND PART NO. 1 , 3, 4, 5, 8, 12, 15, 16, 18, 21, 22

Q'TY/UNIT

CU375SL

A(NZ)

CU375S

- 26 -

NO. PART NAMEPART NO. PRICESPEC

A

A

(NZ)

RoHS

A

ACCESSORY AND UNIT PARTS

MR-CU375S/SL-A
MR-CU375S/SL-A(NZ)

- 27 -

1

5

14

16

20

21

18

17

15

13

19

2

3

4

5

8

10

11

12

9

7

6

WSTWSTWSTWST

1 KIEHJ3420

<G>

CRYSTAL SHELF (R) 11111111

2 KIEHJ3427

<G>

SLIDE SHELF (REAR) 11111111

3 KIEHJ3428

<G>

SLIDE SHELF (FRONT) 11111111

4 KIEHJ3411

<G>

SLIDE CHILLED CASE (UP) 11111111

5 KIEG59471

<G>

STOPPER 22222222

6 KIEHJ3413

<G>

SLIDE CHILLED CASE (LR) 11111111

7 KIEHJ3409

<G>

VEGEATABLE CASE COVER 11111111

8 KIEHJ3406

<G>

FRUIT CASE 11111111

9 KIEHJ3468

<G>

ICE BOX SHEET 11111111

10 KIEJ77474

<G>

FREEZING CASE (UP) 11111111

11 KIEHJ3477

<G>

ICE SPOON 11111111

12 KIEHJ3475

<G>

FREEZING CASE (LOW) 11111111

13 KIEKA0479

<G>

TOP PLATE 11111111

14 KIEHJ3405

<G>

VEGEATABLE CASE 11111111

15 KIEE76435

<G>

DRAIN PAN 11111111

16 KIEHJ3995

<G>

EVAPORATOR 11111111

17 KIEHJ3735

<G>

U WASHER 44444444

18 KIEHJ3797

<G>

RUBBER MOUTH 44444444

19 KIEAA1980

<G>

DRYER 11111111

20 KIEHD6277

<G>

COMPRESSOR

ESS60C11RAW

11111111

21 KIEHJ3940

<G>

E PLATE FINAL ASSY 11111111

RECOMMEND PART NO. 1, 2, 3, 4, 6, 16, 19, 20

CU375SL

A(NZ)

A

(NZ)

A

- 28 -

NO. PART NAMEPART NO. PRICESPEC

CU375S

RoHS

A

Q'TY/UNIT

PACKING PARTS
MR-CU375S/SL-A

MR-CU375S/SL-A(NZ)

- 29 -

NO STEP ON

1

C.F.B BOX ASSY

7

C.F.B TOP COVER

4

SIDE CUSHION ASSY

3

PACKING COVER

6

C.F.B PALLET

5

BOTTOM CUSHION

L

R

2

TOP CUSHION

WSTWSTWSTWST

KIEK96970 <G> 1 1

KIEK97970 <G> 1 1

KIEK98970 <G> 1 1

KIEK99970 <G> 1 1

2 KIEHJ3979 <G> TOP CUSHION 11111111

3 KIEHN8973 <G> PACKING COVER 11111111

4 KIEHB2971 <G> SIDE CUSHION ASSY 11111111

5 KIEHJ3978 <G> BOTTOM CUSHION 11111111

6 KIEHJ3974 <G> C.F.B PALLET 11111111

7 KIEHJ3975 <G> C.F.B TOP COVER 11111111

CU375SL

A(NZ)

CU375S

A

A

(NZ)

A

1 C.F.B BOX ASSY

- 30 -

NO. PART NAMEPART NO. PRICESPEC

RoHS

Q'TY/UNIT

MITSUBISHI ELECTRIC CORPORATATION

HEAD OFFICE : MITSUBISHI DENKI BLDG., MARUNOUCHI,TOKYO 100. TELEX : J24532 CABLE MELCO TOKYO

Distributed by Mitsubishi Electric Australia

MITSUBISHI ELECTRIC AUSTRALIA PTY LTD.

(Incorporated in New South Wales) ABN 58 001 215 792

New South Walse : Queensland: South Australia /
348 Victoria Road, Unit 12, 469 Northern territory :
Rydalmere NSW 2116 Nudgee Road, 77 Port Road
Ph : [phone] Hendra, 4011 Hindmarsh SA 5007
Fax : [phone] Ph : [phone] Ph: [phone]

Fax : [phone] Fax : [phone]

Western Australia : Victoria / Tasmania : Far North
329 collier Road, Unit 4, 303 Burwood Queensland:
Bassendean WA 6054 Hightway, Capricorn Air,
Ph : [phone] East Burwood 3151 13 Mackley St,
Fax : [phone] Ph : [phone] Garbutt 4814

Fax : [phone] Ph: [phone]

Fax : [phone]

Distributed by

BLACK DIAMOIND TECHNOLOGIES LIMITED (BDT)

Wellington Office (Head Office)Auckland Office Christchurch Office
1 Parliament Street Unit1, 4 Walls Road Suite 2, Level 1
PO Box 30-772 Penrose 37 Manderville Street
Lower Hutt

A

uckland PO Box 12-726 Chischurch PO Box 1604
Ph : [phone] Ph: [phone] Ph : [phone]
Fax : [phone] Fax : [phone] Fax : [phone]