Mitsubishi Electric MR-E55R-F-C, MR-E60R-F-C, MR-E55R-PS-C, MR-E60R-PS-C Service Manual

SERVICE MANUAL

Models

MR-E55R-F-C
MR-E55R-PS-C
MR-E60R-F-C
MR-E60R-PS-C

CONTENTS

1. SPECIFICATIONS •••••••••••••••••••••••••••••••••••••••••••••••••••••••••• 2

2. WIRING DIAGRAM •••••••••••••••••••••••••••••••••••••••••••••••••••••••• 5

3. OUTLINES AND DIMENSIONS •••••••••••••••••••••••••••••••••••••••••7

4. REFRIGERANT CIRCUIT ••••••••••••••••••••••••••••••••••••••••••••••••9

5. TROUBLESHOOTING••••••••••••••••••••••••••••••••••••••••••••••••••• 10
5-1 FUNCTION OF OPERATION PANEL ••••••••••••••••••••••••••• 10
5-2 FLOWCHART OF SELF-CHECK •••••••••••••••••••••••••••••••• 22
5-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD ••••••••26
5-4 AUTO ICE MAKER •••••••••••••••••••••••••••••••••••••••••••••••••26
5-5 FLOWCHART OF TROUBLE CRITERION •••••••••••••••••••• 28
5-6 TROUBLE CRITERION OF MAIN PARTS •••••••••••••••••••••35
5-7 TEST POINT DIAGRAM OF FILTER BOARD •••••••••••••••• 42
5-8 TEST POINT DIAGRAM OF CONTROL BOARD •••••••••••• 42
5-9

TROUBLESHOOTING FOR SUPERCOOL FREEZING OPERATION

•••• 43

6. NAMES OF THE PARTS ••••••••••••••••••••••••••••••••••••••••••••••• 47

7. DISASSEMBLY INSTRUCTIONS ••••••••••••••••••••••••••••••••••••• 48

HOME REFRIGERATOR

No. OAH110

NOTE:

• RoHS compliant products have <G> mark on the spec name plate.

C •••• Taiwan

PARTS CATALOG (OAB110)

Model name
indication
(Inside this door)

2

SPECIFICATIONS

1

SPECIFICATIONS

110 V, 60 Hz

E55R E60R

545 (gross) 601 (gross)

1821 × 685 × 728 1821 × 745 × 728

Cabinet, cabinet ceiling

,

sides,

back and front flange

Cabinet, cabinet ceiling, sides, back,

front flange and machine chamber condenser

103 108
109 115

Acrylic resin coated steel

ABS resin
Foamed polyurethane (Cyclopentane)
Foamed polyurethane (Cyclopentane)
Foamed polyurethane (Cyclopentane)

Forced air convection
Forced air convection

Fin and tube type

Automatic heater defrost

Automatic drainage, Forced evaporation method

Automatic control

LED

187 (FREOL S10)

9

kg
kg

mm

g
g
g

V,Hz

L

mm

Unit
Shipping

Weight

Accessories

Evaporator

Condenser

Defrost system
Drain
Temperature control system
Refrigerator compartment interior light

Power supply
Total capacity
Dimensions (H × W × D)
Cabinet
Food liner

Cabinet
Freezer door
Refrigerator door
Freezer
Refrigerator

Insulation

Cooling system

Capillary tube
Desiccant (molecular sieve)
Refrigerant filling capacity R600a
Refrigerating oil (model)

Change pocket (large)
Change pocket (small)
Bottle pocket (large)
Bottle pocket (small)
AUTO-shelf
Two-way flexishelf
Small item case
Free egg shelf
Slide chilled case
Lid of slide chilled case
Versa case
Aluminum tray (Versa case)
Water tank (with light-type bacteria removing filter with lead elimination function)
Freezing case (top)
Freezing case (bottom)
Ice server
Soundproof mat
Ice storage box
Vegetable case
Sliding case (Vegetable case)
Leg cover

2pcs.
2pcs.

1pc.
1pc.

2pcs.

1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.
1pc.

1.6 × 0.63 × 2740, 1.8 × 0.67 × 2740

94

MR-E55R-C
MR-E60R-C

3

Temperature control

ON

−22.2

−18.9

−14.3

–
–
–
–
–
–
–
–
–

OFF

−23.8

−20.6

−16.0

–
–
–
–
–
–
–
–
–

OPEN

1.9

5.1

8.4
–
–
–
–
–
–
–
–
–

SHUT

0.1

3.2

6.4
–
–
–
–
–
–
–
–
–

Dial position
HI
MID
LOW
LOW (Soft freezing)
MID (Soft freezing)
HI

(Soft freezing)
FREEZER(LOW)
FREEZER(MID)
FREEZER(HI)
ICE MAKING
ICE MAKING STOP
CRYSTAL ICE MAKING

Model

NTC thermistor

Freezer

Compressor HeaterMotor damper

Refrigerator

OFF

4.2

6.1

7.7
–
–
–
–
–
–
–
–
–

ON

2.9

4.8

6.4
–
–
–
–
–
–
–
–
–

OPEN

–
–
–

−5.9

−9.8

−11.1

−12.0

−16.1

−17.7

–
–
–

SHUT

–
–
–

−7.1

−11.1

−12.3

−15.1

−19.4

−21.2

–
–
–

VegetableVersa

OPEN

–
–
–
–
–
–
–
–
–

−21.6

−21.6

−21.6

SHUT

–
–
–
–
–
–
–
–
–

−23.4

−23.4

−23.4

Ice making

W

A
A

Sec.

A

W

rpm

W

rpm

Compressor

Motor protector

Heater
(Rating)

Freezer
compartment

Refrigerator

Machine
chamber

Fan motor

Defrosting

control

Model
Power supply

Rated input
Starting current
Running current
Winding resistance (A.T.20 )
Model
Ambient temperature
Time
Current
Model
Type
Model
Specification

Defrost finish
Thermal fuse
Defrost heater 1
Defrost heater 2
Deodorizing function of defrost heater
Model
Type
Input
Revolution
Number of poles
Model

Input
Revolution
Number of poles
Water pipe heater
Rotational heater board
Vegetable compartment heater

Ice making tray heater
Water tank heater

EFI100E 13DHH

110 V, 60Hz

45 (1620rpm)

4 (Current limiter)

0.69 (1620rpm)

12.4

MM3-71CCV

25

16 or less

17.0

NSCE001DC1

4-phase stepping motor drive voltage DC12V

141 (110V,86W)

81 (110V,150W)

Control board

Microcomputer

Thermistor 14 ± 1.5

70 ± 2

Not equipped

UDQM002B3

DC brushless motor

2.4 (12V DC)

1520 (12V DC)

10P

4715JL04WS16G51

1.4 (12V DC)

1450 (12V DC)

4P
110V-4.0W
110V-8.0W
110V-7.3W

110V -12.1W

110V-4.0W

Defrosting
timer

Three-way valve

ELECTRICAL PARTS SPECIFICATIONS
MR-E55R-C

4

Temperature control

ON

−21.9

−19.2

−13.7

–
–
–
–
–
–
–
–
–

OFF

−23.5

−20.8

−15.4

–
–
–
–
–
–
–
–
–

OPEN

0.7

3.8

7.0
–
–
–
–
–
–
–
–
–

SHUT

−1.2

1.9

5.1
–
–
–
–
–
–
–
–
–

Dial position
HI
MID
LOW
LOW (Soft freezing)
MID (Soft freezing)
HI

(Soft freezing)
FREEZER (LOW)
FREEZER (MID)
FREEZER (HI)
ICE MAKING
ICE MAKING STOP
CRYSTAL ICE MAKING

Model

NTC thermistor

Freezer

Compressor HeaterMotor damper

Refrigerator

OFF

7.0

9.0

10.7
–
–
–
–
–
–
–
–
–

ON

5.1

7.0

8.7
–
–
–
–
–
–
–
–
–

OPEN

–
–
–

−7.1

−9.5

−10.7

−11.4

−16.5

−18.0

–
–
–

SHUT

–
–
–

−8.3

−10.7

−12.0

−14.5

−19.7

−21.5

–
–
–

VegetableVersa

OPEN

–
–
–
–
–
–
–
–
–

−17.9

−17.9

−17.9

SHUT

–
–
–
–
–
–
–
–
–

−20.8

−20.8

−20.8

Ice making

W

A
A

Sec.

A

W

rpm

W

rpm

Compressor

Motor protector

Heater
(Rating)

Freezer
compartment

Refrigerator

Machine
chamber

Fan motor

Defrosting

control

Model
Power supply

Rated input
Starting current
Running current
Winding resistance (A.T.20 )
Model
Ambient temperature
Time
Current
Model
Type
Model
Specification

Defrost finish
Thermal fuse
Defrost heater 1
Defrost heater 2
Deodorizing function of defrost heater
Model
Type
Input
Revolution
Number of poles
Model

Input
Revolution
Number of poles
Water pipe heater
Rotational heater board
Vegetable compartment heater

Ice making tray heater
Water tank heater

EFI100E 13DHH

110 V, 60Hz

45 (1620rpm)

4 (Current limiter)

0.69 (1620rpm)

12.4

MM3-71CCV

25

16 or less

17.0

NSCE001DC1

4-phase stepping motor drive voltage DC12V

110V-4.0W

110V-12.1W

81Ω (110V, 150W)
141Ω (110V, 86W)

Control board

Microcomputer

Thermistor 14 ± 1.5

70 ± 2

Not equipped

UDQM002B3

DC brushless motor

2.4 (12V DC)

1520 (12V DC)

10P

4715JL04WS16G51

1.4 (12V DC)

1450 (12V DC)

4P
110V-4.0W
110V-8.0W
110V-7.3W

Defrosting
timer

Three-way valve

ELECTRICAL PARTS SPECIFICATIONS
MR-E60R-C

5

WIRING DIAGRAM

2

( SKELETON WIRING DIAGRAM )

MR-E55R-C
MR-E60R-C

I.THERMISTOR (Ice making compartment thermistor)
V.THERMISTOR (Vegetable compartment thermistor)
VERSA.THERMISTOR (Versa compartment thermistor)
DEF.THERMISTOR (Defrost thermistor)
ICE-TRAY THERMISTOR (Ice making tray thermistor)
F.THERMISTOR (Freezer compartment thermistor)
R.THERMISTOR (Refrigerator compartment thermistor)
TEMP. CONTROL BOARD: (Operation P.C. board)
COMPENSATIONAL HEATER FOR VEGETABLE ROOM: (Vegetable compartment heater)
DIVIDER HEATER: (Rotational heater board)
LED BOARD IN VEGETABLE ROOM: LEDs (Vegetable compartment)
TANK LED: (LED for bacteria removal from water tank)
LED BOARD IN REFRIGERATOR ROOM (R): Interior LED (right)
LED BOARD IN REFRIGERATOR ROOM (L): Interior LED (left)
S.LED: Versa compartment supercool freezing LED
R.LED(D): Refrigerator deodorization LED
DOOR SW. (FOR R-COMPARTMENT & ICE ROOM): Door switch (for refrigerator compartment, ice compartment)
DOOR SW. (FOR F-COMPARTMENT): Door switch (for freezer compartment)
FAN MOTOR (FOR COMPRESSOR): (BOX FAN)
VALVE MOTOR: Three-way valve
MOTOR DAMPER VS: Motor damper (for vegetable/versa compartment)
MOTOR DAMPER RI: Motor damper (for refrigerator/ice making compartment)

The wiring diagram in the dashed line is the
same as the one attached to the products.

Although the following parts are called in different names here,
they are identical with the parts shown in the service manual.

BLACKBLACK

WATER PIPE HEATER

GRAY GRAYGRAY BLUE

GRAY REDBLUEWHITE

THERMAL FUSE(73

°C

)

DEFROST

HEATER 1

BLACK

M

M

GRAY

RED

VIOLET

YELLOW

BLUE

VALVE MOTOR

WATER TANK HEATER

R.LED(D)

BLUEBLACK

S.LED

VIOLET

BLACK

PLUG

F1 : 10A FUSE
FUSE3

:

3A FUSE

ON THE BOARD

CONTROL BOARD,N/F BOARD

INVERTER

*

WHEN THE DOORS ARE CLOSED.

ICE GEAR BOX

(ON DISPLAY PANEL)

TEMP. CONTROL BOARD

MOTOR DAMPERRIMOTOR DAMPER

VS

THERMOPILE

WHITE

RED

YELLOW

SKY BLUE

LIGHT

BROWN

WHITE

WHITE/RED

BLUE

VIOLET

SKY BLUE

BLACK

GRAY

PINK RED

SKY BLUE

WHITE

GRAY

BLACK

BLACK

BLACK

BLACK

BLUE

WHITE

YELLOW

RED

ORANGE

BLUE

WHITE

YELLOW

RED

YELLOW

GREEN

PINK

GRAY

BROWN

SKY BLUE

WHITE/RED

LIGHT

BROWN

ORANGE

BLUE

PINK

BRIGHT

YELLOW

YELLOW

BROWN

WHITE

WHITE

WHITE

WHITE

WHITE

WHITE

WHITE WHITE

WHITE

WHITE

WHITE

WHITE

WHITE

WHITE

R.THERMISTOR

F.THERMISTOR

ICE TRAY THERMISTOR

DEF.THERMISTOR

VERSA THERMISTOR

V.THERMISTOR

I.THERMISTOR

WHITE

BLACK

WHITE

RED

YELLOW

GRAY

WHITE

GRAY

GRAY

GRAY

GRAY

LIGHT

GREEN

YELLOW

WHITE

ORANGE

BLUE

WHITE

GRAY

GRAY

WHITE

BLUE

GRAY

GRAY

WHITE

WHITEWHITE

WHITE

DEFROST

HEATER 2

GRAY

DIVIDER HEATER

COMPENSATIONAL HEATER

FOR VEGETABLE ROOM

ICE TRAY HEATER

MOTOR PROTECTOR

COMPRESSOR

LIGHT

GREEN

BLACKREDVIOLET

WHITE/RED

WHITE/RED

TANK LED

LIGHT BROWN

BRIGHT YELLOW

RED

YELLOWVIOLET

MOVE EYE MOTOR

FAN MOTOR (FOR COMPRESSOR)

FAN MOTOR

LIGHT GREENWHITE

ORANGE

BLACK

BRIGHT YELLOW

YELLOW

BLACK

YELLOW

VIOLET

VIOLET

VIOLET

VIOLET

PINK

RED

LIGHT BROWNWHITE

WATER PUMP

YELLOW GREENWHITE

BROWNRED

DOOR SW.(FOR F-COMPARTMENT)

*

DOOR SW.(FOR R-COMPARTMENT & ICE ROOM)

*

LED BOARD IN

VEGETABLE ROOM

SKY BLUE

SKY BLUE

WHITE/RED

WHITE LIGHT BROWN

LED BOARD IN

REFRIGERATOR ROOM

(L)

WHITE

V

MS
3

˜

W

U

LED BOARD IN

REFRIGERATOR ROOM

(R)

LIGHT

BROWN

RED

LIGHT

GREEN

M

MMM

6

MR-E55R-C
MR-E60R-C

( ACTUAL WIRING DIAGRAM )

( When the doors are closed. )

I.THERMISTOR (Ice making compartment thermistor) V.THERMISTOR (Vegetable compartment thermistor)
VERSA.THERMISTOR (Versa compartment thermistor) DEF.THERMISTOR (Defrost thermistor)
ICE-TRAY THERMISTOR (Ice making tray thermistor) F.THERMISTOR (Freezer compartment thermistor)
R.THERMISTOR (Refrigerator compartment thermistor) TEMP. CONTROL BOARD: (Operation P.C. board)
V.HEATER (Vegetable compartment heater) DIVIDER HEATER: (Rotational heater board)
VEGETABLE LED: LEDs (Vegetable compartment) TANK LED: (LED for bacteria removal from water tank)
R/I ROOM DOOR SWITCH: Door switch (for vegetable compartment, ice compartment)
FREEZER ROOM DOOR SWITCH: Door switch (for freezer compartment)
FAN MOTOR (FOR COMPRESSOR): (BOX FAN) R.LED(R): Interior LED (right)
R.LED(L): Interior LED (left) S.LED: Versa compartment supercool freezing LED
R.LED(D): Refrigerator deodorization LED VALVE MOTOR: Three-way valve
MOVE EYE MOTOR: i-see sensor

3

1

2

AC110V

60Hz

13

26

7

13

5

31

5

7
31

87 54 13

8 5

7

1

24

8

12

3

4

56

8791012 112134576910

5

1112

69

3

5

2

1

9101112131415

14 13

4

3

3

1

221

1

2

1

2

1

3

8765432

1

6

2

3

3

2

3

1

5

5

423

1

1

2

2

1

3421

145623

654321

4321

98 462753110

3

4

4

3

4

654321

4

1

4

4

2

1

2

1

1234567

8

4

4

10

3

4

4

5

3

131415161718

1

2

16

2
1

CN61L

5
31

1

2

4

4

4

3

2

2

GRAY

GRAY

GRAY

GRAY

GRAY

GRAY

GREEN

GREEN

WHITE

WHITE

GRAY

WHITE

RED

RED

PINK

BLACK

BLACK BLACK

SKY BLUE

SKY BLUE SKY BLUE

VAIOLET

VAIOLET

GRAY

VAIOLET

5

1

3

1

t°

t°

t°

t°

t°

t°

t°

TEMP.
CONTROL BOARD

DIVIDER

HEATER

REFRIGERATOR

COMPARTMENT

REFRIGERATOR
COMPARTMENT DOOR

WHITE

WHITE

RED

SKY BLUE

SKY BLUE

SKY BLUE

SKY BLUE

SKY BLUE

LIGHT BROWN

LIGHT GREEN

LIGHT GREEN

LIGHT BROWN

BLUE

BLUE

WHITE

WHITE/ RED

R, LED

(R):

WHITE

WHITE

WHITE/ RED

WHITE/ RED

WHITE/ RED

WHITE/ RED

R, LED

(L):

ICE/ VERSA
COMPARTMENT DOOR

WHITE

WHITE

2

R/ I ROOM

DOOR SWITCH

ICE COMPERTMENT

RED
SKY BLUE

SKY BLUE

LIGHT BROWN

LIGHT GREEN

BLUE

WHITE

WHITE

WHITE

RED

BLUE

YELLOW

M

MOTOR

DAMPER

ICE

GEAR

BOX

ICE TRY

THERMISTOR

ICE TRY HEATER

I. THERMISTOR

RED

BLUE

WHITE

YELLOW

WHITE

WHITE

FREEZR COMPARTMENT DOOR

VEGETABLE COMPRATMENT DOOR

FREEZER ROOM DOOR SWITCH

FREEZR

COMPARTMENT

M

FAN

MOTOR

WHITE/ RED

SKY BLUE

PINK

YELLOW

BRIGHT YELLOW

VAIOLET

THERMAL

FUZE (73ºC)

F. THERMISTOR

DEF. THERMISTOR

DEFROST

HEATER 2

DEFROST HEATER 1

WHITE

WHITE

BLACK

BLACK

PINK

SKY BLUE

BLACK

WHITE

WHITE

WHITE

WHITE

WHITE WHITE

LIGHT BROWN

WHITE

BLUE

RED

VEGETABLE

COMPARTMENT

VEGETABLE

LEDS

BLUE

BLUE

VAIOLET

VAIOLET

VAIOLET

YELLOW

SKY BLUE

ELECTRIC

BOX

CONTROL

BOARD

GRAYGRAY

YELLOWYELLOW

GRAY

YELLOW

R. THERMISTOR

R. LED (D)

WHITE

WHITE

LIGHT GREEN

ORANGE

SKY BLUE

LIGHT GREEN

LIGHT BROWN

LIGHT BROWN

M

WATER PUMP MOTOR

TANK LED

WHITE

RED

RED

BLACK

GRAY GRAY

GRAY

BLUE

VIOLET

ORANGE

GRAY

GRAY

GRAY

WATER PIPE HEATER

YELLOW GREEN

LIGHT GREEN

BROWN

WHITE
GRAY
WHITE
WHITE

WHITE
WHITE

WHITE
WHITE

WHITE

YELLOW

YELLOW

WHITE
RED

RED

RED

BLUE

BLUE

BLUE

WHITE

GRAY

SKY BULE

SKY BULE

ORANGE

BLUE

RED

WHITE/ RED

YELLOW
VIOLET

PINK

BRIGHT YELLOW

YELLOW

VIOLET

BLACK

BRIGHT YELLOW

BRIGHT YELLOW

BRIGHT YELLOWBRIGHT YELLOW
LIGHT GREENYELLOW GREEN

LIGHT BROWN

WHITE

LIGHT BROWN
WHITE

YELLOW GREEN

GRAY

SKY BULE

PINK

BROWN

SKY BULESKY BULE

VIOLETVIOLET
YELLOWYELLOW

GRAYGRAY
RED
BLACK

RED

BLACK

FILTER BOARD

WHITE/ RED
LIGHT BROWN

WHITE

BLACK
BLUE

RED
YELLOW

YELLOW

YELLOW

YELLOW

YELLOW

YELLOW

BRIGHT YELLOW

LIGHT GREEN

PINK

PINK

PINK

ORANGE

ORANGE

ORANGE

ORANGE

GRAY

GRAY

GRAY

GRAY

GRAY

SKY BULE

LIGHT BROWN

BROWN

BROWN

LIGHT BROWN

BRIGHT YELLOW
RED

RED

RED

RED

RED

WHITE
WHITE/ RED

WHITE/ RED

BLUE

BLUE

BLUE

BLUE

YELLOW GREEN

YELLOW GREEN

BRIGHT YELLOW

BLACK
BLACK

BLACK

BLACK

BLACK

BLACK

BLACK

VIOLET

VIOLET

VIOLET

VIOLET VIOLET

WHITE
WHITE

WHITE

WHITE

WHITE

WHITE

LIGHT GREEN

LIGHT GREEN

LIGHT GREEN

LIGHT BROWN

BLACK

WHITE

WHITE

BLACK

WHITE
WHITE

REACTOR

2
1

43

YELLOWORANGE

BLACK BLACK
VIOLET

LIGHT GREEN WHITE

RED

M

M

MS

3

˜

M

YELLOW

VIOLET

GRAY

RED

BLUE

25413

VALVE MOTOR

COMPRESSOR

(VIEW FROM REAR LEFT SIDE)

MACHINE CHAMBER

COMPARTMENT

213

WHITE
BLACK

RED

FAN MOTOR

(COMPRESSOR)

MOTOR

PROTECTOR

4

1

YELLOW
RED

BLUE

WHITE

MOTOR

DAMPER

VERSA

THERMISTOR

7

1

248563910

1
2453

2
3

LIGHT BROWN

LIGHT GREEN

LIGHT BROWN

LIGHT BROWN

BRIGHT YELLOW

BRIGHT
YELLOW

BRIGHT YELLOW

WHITE

SKY BLUE

YELLOW

YELLOW

YELLOW

GRAY

BLACK

RED

RED

BLACK
BLACK
BLACK
BLACK
BLACK

VIOLET /BLACKVIOLET

VIOLET

RED

BLACK
BLACK
BLACK
BLACK

4

1

2
3

VERSA

COMPARTMENT

THERMOPILE

MOVE EYE MOTOR

S.LED

TANK HEATER

432

1

V. HEATE R

LIGHT GREEN

GRAY

V. THERMISTOR

1

2

VIOLET

7

393

245

309

300

96

547

541

666(

Pitch between the front wheels

)

631(

Pitch between the adjust bolts

)

578(

Pitch between the rear wheels

)

363

8

363

8

128

8

5.5

2500

407

363

394.5

6

283.5

363 212 822

394.5283.5

6

1821

(Display)

685(Display)
680(Cabinet)

77

318

400

408

436

337

249

595

595

595

196

203

307

541

581

539

596
655

37

728(Display)

142

179

101

760

53

633

10

331

37

333

175

41

1075

204

314

86

104

358.5

358.8

348

255

REQUIRED SPACE FOR INSTALLATION

1821

20 685 20

211

290

950

728

100

1061

989

180.5

222

125

83.5

125

83.5

159.5

201

406
413

OUTLINES AND DIMENSIONS

3

MR-E55R-C

Unit : mm

R(L) : Refrigerator compartment (Left)
R(R) : Refrigerator compartment (Right)
I : Ice making compartment
S : Select compartment [Versa compartment]
F : Freezer compartment
V : Vegetable compartment

R(L) R(R) I S F V
Hight 822 822 212 212 363 363
Width 283.5 394.5 283.5 394.5 684 684

DOOR DIMENSION

8

MR-E60R-C

393

245

309

300

96

607

601

REQUIRED SPACE FOR INSTALLATION

726(

Pitch between the front wheels

)

691(

Pitch between the adjust bolts

)

638(

Pitch between the rear wheels

)

363

8

363

8

12

8

8

5.5

2500

407

363

454.5

6

283.5

363 212 822

454.5283.5

6

1821

(Display)

745(Display)
740(Cabinet)

77

318

400

408

436

337

249

655

655

655

196

203

367

601

641

599

596
655

37

728(Display)

142

179

101

760

53

633

10

331

37

333

175

41

1075

204

374

86

104

358.5

358.5

348

255

1821

20 745 20

211

335

950

728

100

1121

180.5

222

125

83.5

125

83.5

159.5

201

989

406
413

R(L) : Refrigerator compartment (Left)
R(R) : Refrigerator compartment (Right)
I : Ice making compartment
S : Select compartment [Versa compartment]
F : Freezer compartment
V : Vegetable compartment

R(L) R(R) I S F V

Hight 822 822 212 212 363 363

Width 283.5 454.4 283.5 454.5 744 744

DOOR DIMENSION

9

REFRIGERANT CIRCUIT

4

Capillary tube

1.8× 0.67×2740 (mm)

1.6× 0.63×2740(mm)

Suction pipe

Muffler

Evaporator

Dryer

Cabinet
pipe

#150

Compressor

Charge pipe
(Low pressure
side) 6.35

Charge pipe
(High pressure side)

Condenser

Capillary tube

Three-way
valve

4.0

MR-E55R-C
MR-E60R-C

10

ROOM button

Pressing this button selects the
compartment to be displayed.

Press to select the compartment before adjusting

the temperature or cooling fast.

When the versa compartment is set at soft freezing
mode, fast cooling cannot be selected.

SELECT / QUICK button

Pressing this button sets each compartment’s temperature.

In order to cool fast:

QUICK mode stops automatically

• QUICK mode automatically stops in 2 hours.

When stopping QUICK mode before it automatically ends

Press for 3 seconds.

This operation starts only when the room selection is set to
the versa compartment, and also the versa compartment is
set to soft freezing mode.

• Press once.

The supercool freezing operation ends automatically

• The superc ool freezing operation automatically ends
after 6 to 8 hours.

When stopping the supercool freezing operation before it automatically ends

• Press once.

ICE SELECT button

Supercool freezing button

Pressing this button selects the setting
of the ice making compartment.

The supercool freezing operation starts.

To reset the settings when initialled, press and simultaneously
for 3 seconds. The temperatures of the refrigerator, vegetable, and freezer compartments
will be set to “Middle” .The Fast Cooling operations in all the compartments will stop.

USEFUL FUNCTIONS

Press and simultaneously for 3 seconds.

Child lock

( lamp turns on)

1

2

Press several times until is displayed.

Stop ice making

3

Press button for 3 seconds.

( lamp turns on)

ECO mode (To start and cancel)

Operating mode and Temperature range

Compartment

Mode

Temp. range

Approx.

0 to 6

°C

Approx.

−9 to −5°C

Approx.

−

18 to −12

°C

Approx.

−

21 to −17

°C

Approx.

−

21 to −17

°C

Approx.

−21 to −17°C

Approx.

3 to 9°C

Approx.

−21 to −17°C

Refrigerator
compartment

Versa
compartment

Ice making
compartment

Vegetable compartment
Freezer compartment

The temp. range is based on the data measured at the center of each compartment with the door closed and with no
food inside under the condition of ambient temperature 30°C.

TROUBLESHOOTING

5

MR-E55R-C
MR-E60R-C
(1) Function of normal operation

5-1 FUNCTION OF OPERATION PANEL

· The display extinguishes in 30 seconds
after the last button is pressed.

(No failure in refrigerator)

· Pushing any button turns on the display
again.

11

(2) Demonstration mode for shop display

Setting

Within 1 minute after power supply turns on, press the , , and simultaneously for 5 seconds
with the door of the ice making compartment opened.

When the setting is complete, a “beep” sound is heard and “Auto Demo Mode” is displayed.
Demonstration mode is not available when the temperature of freezer compartment is –7°C or lower.

Panel operation mode during demonstration mode

The panel operation mode changes to “manual” if any of the switches is pressed. It changes to "auto" if none of the switches
is pressed for 45 seconds since the last time any of the switches was pressed.
Manual mode: Panel indication changes according to switch operation.
Auto mode: Panel indication is automatically changed.

Release

1) Open the ice making compartment’s door during demonstration mode, and leave it open.

2) Press

button twice.

3) Simultaneously press

, , and for 5 seconds. (A “beep” sound is heard in about 5 seconds.)

Verify that the room display and the temperature adjustment display on the operation panel do not light by turns a minute

after the 3 steps above are performed.

Note: Follow the procedure above to release demonstration mode as it cannot be released by simply turning
on/off the power supply.

(3) Fine adjustment of temperature
Fine adjustment of temperature is available for refrigerator compartment, freezer compartment and versa

compartment.
As for versa compartment, however, it is only available when the compartment is set to

.

Setting

Simultaneously press and for about 3 seconds until a “beep” sound is heard.
Room display blinks every 10 seconds in fine adjustment mode.

Fine adjustments of temperature

Follow the same operation procedure for temperature adjustment.

Release

Follow the same procedure as Setting and the finely-adjusted
temperatures are reset for refrigerator compartment, freezer
compartment and versa compartment at once.
Temperature is adjusted in approximately 0.3 to 0.6°C

increments.

(4) Ice making test/Self-check

Setting

Press for about 5 seconds.

Operation and its display

While automatic ice making is testing, the indication of ice

making compartment setting blinks on display.

When something is faulty, the error code is indicated.

Release

The test automatically finishes in 10 minutes.

Fine adjustment of temperature

Normal mode

Fine adjustment mode

Note: -25 °C freezing.

Select the maximum setting of the
temperature adjustment function for the
freezer compartment.
There is no particular display when the
setting is selected.

(5)

“LOW” setting on the anti-condensation heater

Outline

This setting lowers energy on the anti-condensation heater,

allowing for lower power consumption.

If, however, the condensation forms on the partitions, cancel

the setting.

Setting

Press and buttons simultaneously for 3 seconds

(until 1 beep sound is heard ).

Cancellation

Go through the same procedure as that of Setting (2 beep

sounds are heard when cancelled).

When the settings are reset, this setting is also cancelled.

Display/indication of the setting status

No display is available to show the low setting state on the

anti-condensation heater.

The number of beep sounds indicates the setting state.

Beep (1 time) Set to Low
Beep beep (2 times)

Low setting is canceled and returned to normal state.

12

(6) Service Check Function

1) Outline

• The chart below shows the outline of service check function.

• “Service check entry” needs to be set in order to perform each check mode. After setting “service check entry,” start the
setting operation of the check mode to be displayed.

• blinks while service check function is performed.

• The display of

indicates which mode is in operation.

• When one of the check modes is in operation, other modes cannot be set. The mode in operation needs to be cancelled
before setting another mode.

Once each check mode starts, it continues operating even if the door gets closed.

(Open the door when releasing each mode.)

Refer to the next sections about the operation procedure and display of each check mode.

• In order to release “service check function entry,” follow the same procedure as setting operation during “service check
function entry” or each check mode.

Setting / releasing method Display

Door Button operation Blinking

(1)

(2)

(3)

(4)

(4)(1)

(4)(2)

(5)

Open the

ice making com-

partment’s door

Leave the

ice making

compartment’s

door open

Leave the

ice making

compartment’s

door open

Leave the

ice making

compartment’s

door open

Leave the

ice making

compartment’s

door open

Leave the

ice making

compartment’s

door open

Simultaneously press
and for 3 seconds

Simultaneously press
and for
3 seconds

Simultaneously press
and for
3 seconds

Simultaneously press
and for
3 seconds

Press

Press

Press for
3 seconds

Press for
3 seconds

DisplaySetting method

Mode

Door Button operation Lighting

Blinking

1) Compressor’s rotational speed change mode

…The rotational speed of the compressor can be
changed; The fan motor in machine chamber
can be switched on and off.

2) Damper Operation mode

…Each damper can be opened and closed; Refrigerator
fan can be switched on/off.

3) Thermistor temperature check mode

…The detected temperature of each thermistor can
be checked.

4) Error history display mode

…The error occurred in the past can be checked.

(1) History display mode

…All the errors occurred in the past can be
checked in numeric order.

-

(2) Order of occurrence mode

…The newest 5 errors (at the maximum) are
displayed from the newest to the older.

-

5) Set temperature adjustment mode

…The set temperature in each compartment can be
adjusted.

Service check function entry

“History display mode” and “Order of occurrence mode” are
switched over each time is pressed.

13

e.g.) Compressor’s rotational speed 56rps, Fan box fan ON

Blinking

“ ”

Lighting

Fan in box fan ON/OFF

Compressor’s

rotational speed

Tens’ place

Compressor’s

rotational speed

Ones’ place

Display during Compressor’s
rotational speed change mode

Room display

Corresponding

values

8
4
2
1

Ice making mode

display

Corresponding

values
84
21

Blinking

“ ”

Lighting

Fan in box fan ON

Tens’ place "5"

(=4+1)

Ones’ place "6"

(=4+2)

Display during Compressor’ s
rotational speed change mode

Changing the rotational speed

After setting this mode, compressor’s rotational speed changes every time button is pressed.
Rotational speed (rps) is divided into ones’ place and tens’ place when it is displayed.

(Basically the compressor starts operation at level 10, however, it may be different depending on models, or as a result of
specification change.)

<Change of rotational speed>

Rotational speed can be changed only when the compressor is in operation. While the compressor stops, rotational speed is

not displayed, and

button operation is not effective. When the compressor stops, unplug the power code, and wait for

a several minutes, then plug it again.

Operation sound may get increase in the process of changing rotational speed, but that is not dysfunction. Check the sound

level when rotational speed is stabilized.

Switching ON/OFF the box fan

In this mode, box fan can be switched on and off at each press of .

Box fan

The ON/OFF state is displayed with on the display panel.

ON

OFF

Display of

Lighting

Not lighting

2) Compressor’s rotational speed change mode

Setting

With the ice making compartment’s door opened, simultaneously press and for 3 seconds until a “beep”
sound is heard. starts to blink.

With the door opened, press for 3 seconds to start compressor’s rotational speed change mode.

Once this mode starts, it continues operating even if the door is closed.
Compressor’s rotational speed change mode is not available during demonstration mode, thermistor temperature check
mode, set temperature adjustment mode, error history display mode, or when child lock is effective.

Display during compressor’s rotational speed change mode

During compressor’s rotational speed change mode, blinks and lights up.

Display of rotational speed

• Compressor’s rotational speed is divided into ones’ place and tens’ place when it is displayed.

• One of the values (8/4/2/1) is assigned to each indicator of both tens’ place and one’ place on the display panel. The sum of
the corresponding values of the lighting indicators is the compressor’s rotational speed.

Level 0 Level 1 Level 2 Level 3 Level 4 Level 5

Normal

Low speed

High speed

Level 6 Level 7 Level 8 Level 9

Level 10

14

3) Damper Operation Mode

Setting

With the ice compartment door opened, press and simultaneously for 3 seconds until a “beep” sound is
heard. blinks.

With the door opened, press and simultaneously for 3 seconds until a “beep” sound is heard.

Damper operation mode starts. Once this mode starts, it continues operating even if the door gets closed.
Damper operation mode is not available during demonstration mode, thermistor temperature check mode, compressor’s
rotational speed change mode, temperature adjustment mode, error history display mode, or when child lock is effective.

Display during damper operation mode

During damper operation mode, blinks and lights up.

Control state display of each damper

Blinking

“ ”

Lighting

a) Damper
serial number

b) State of damper

: present state
: next state
( The damper of the selected compartment is in operation, the indicator
in the present state blinks.)

During damper operation mode

c) Refrigerator
fan ON/OFF

d) Display during damper
operation “Blinks”

a) Damper serial number

The room display on the display panel corresponds to the values representing damper types. The room display indicators

and their corresponding values (8/4/2/1) are shown in the tables below.

Each serial number is assigned to each compartment (thermistor), which is used in thermistor temperature mode and
set temperature adjustment mode besides damper operation mode. The sum of the corresponding values of the lighting
indicators is the damper’s serial number.

Room Display Corresponding values

84
21

Serial number Assigned compartment Damper operation mode

1 Refrigerator compartment
2 Slide chilled compartment
3 Ice making compartment
4 Versa compartment
5 Vegetable compartment
6 Freezer compartment
7 Defrosting
8 Ice tray

9 Outdoor air
10 Deodorization
11 Thermopile

/ : SW operation is effective/ineffective

b) State of damper

on the left and on the right represent respectively the present state and the next state of the damper

operation.

When the right and left indicators are ON, it indicates that the damper is open.
When the right and left indicators are OFF, it indicates that the damper is close.

c) ON/OFF state of refrigerator fan motor

indicates the ON/OFF state of refrigerator fan motor.

Next

Present

Release

With the ice making compartment’s door opened, press and simultaneously for 3 seconds until a “beep”
sound is heard. The screen returns to the normal temperature display.

The function is automatically released in one hour.
Although unplugging and plugging the power code can release this function, it is recommended to follow the procedure
above for protection of the compressor.

15

Opening and closing dampers

(1) Press to select the damper to be set. Each press of the button makes a “beep” sound and changes the kind of
dampers. The serial number described in a) indicates the selected damper.

The selected damper is displayed using the serial number (1: refrigerator ~ 10: deodorization) in numeric order repeatedly.

Refrigerator damper slide chilled compartment damper ice making compartment damper outdoor air deodorization damper

Slide chilled compartment, defrosting, ice tray, outdoor air, and deodorization can be selected;

however, it is ineffective in damper operation mode.
(2) To open the damper, turn on , and to close the damper, turn off by pressing

button.

Damper operation indicators

on the left and on the right represent respectively the present state and the next state of the damper operation.
The on and off of the right and left indicators indicate respectively the opening and closing of the damper.
The damper operation of the indicator blinking in the “present state” is in operation.

When any of the damper operations including those not selected is in operation, blinks.

Next

Present

Switching ON/OFF the refrigerator fan motor in the unit

In this mode, each press of switches on and off the refrigerator fan motor.

The ON/OFF state of the refrigerator fan motor is represented with .

display Fan motor in the unit

Lighting ON

Not lighting OFF

Release

With the ice making compartment’s door opened, press and simultaneously for 3 seconds until a “beep” sound is
heard. The screen returns to the normal temperature display.

The function is automatically released in one hour.
Although unplugging and plugging the power code can release this function, it is recommended to follow the procedure
above for protection of the compressor.

“ ”

Lighting

a) Serial
number
“3” : Ice making
compartment

b) State of damper
Present: “ ”
Next: “ ”

c) Refrigerator fan
Lighting: ON

Blinking

(3) Press

for 3 seconds to operate the damper. (A “beep” sound is heard when the setting has been conveyed.)

Setting of the operating damper cannot be changed.
Damper operation stops automatically. (Blinking changes to lighting.)

e.g.) When changing the damper of ice making compartment from “CLOSE” state to “OPEN” state, select the indicators as
shown below and press

for 3 seconds.

The present and next damper operations of the selected

compartment illuminate.

When the damper of the selected compartment is in
operation, the indicator in the present state blinks.
<Present and next states of the damper of the selected
compartment>

< The damper of any compartment is in operation>

}

}

16

4) Thermistor temperature check mode

Setting

With the ice compartment door opened, press and simultaneously for 3 seconds until a “beep” sound is
heard. blinks.

With the door opened, press for 3 seconds.

Thermistor temperature check mode starts. Once this mode starts, it continues operating even if the door gets closed.
Thermistor temperature check mode is not available during demonstration mode, compressor's rotational speed change
mode, set temperature adjustment mode, error history display mode, or when child lock is effective.

Display during thermistor temperature check mode

During thermistor temperature check mode, blinks and lights up.

Displaying the thermistor temperature

The kind and temperature of thermistor is displayed on the operation panel.

The ambient temperature detected by thermistor may be a little different from the actual one due to the influence of the

temperature in the refrigerator.

a) Thermistor serial number

The room display on the display panel corresponds to the values representing thermistor types. The room display indicators

and their corresponding values (8/4/2/1) are shown in the tables below.

Each serial number is assigned to each compartment (thermistor), which is used in damper operation mode and
set temperature adjustment mode besides thermistor temperature mode. The sum of the corresponding values of the
lighting indicators is the thermistor’s serial number.

Room display

Corresponding

values

8
4
2
1

Serial number Assigned compartment Thermistor temperature check mode

1 Refrigerator compartment
2 Slide chilled compartment
3 Ice making compartment
4 Versa compartment
5 Vegetable compartment
6 Freezer compartment
7 Defrosting
8 Ice tray

9 Outdoor air
10 Deodorization
11 Thermopile

/ : SW operation is effective/ineffective

b) Thermistor temperature tens’ place

Usually, the , , and indicators that are used for temprature adjustment in the versa compartment represent
tens' place of the thermistor temprature.
Display of

// corresponds to the values, 4/2/1. The sum of the corresponding values of the blinking

indicators is the tens’ place of thermistor temperature.

Room display Corresponding values

4
2
1

c) Thermistor temperature signs

Plus and minus signs of thermistor temperature are indicated on the display which is usually used for mode.

Thermistor temperature signs

Lighting

-

Not lighting +

a) Thermistor
Serial number

b) Thermistor temperature
tens’ place

c) Thermistor temperature
± signs

d) Thermistor
temperature
ones’ place

“ ” “ ”

Lighting

Blinking

Display during
thermistor temperature
check mode

17

d) Thermistor temperature ones’ place

Ones’ place of thermistor temperature is indicated on the display part which is usually used for ice making setting.
Display of

/ / / corresponds to the values, 8/4/2/1. The sum of the corresponding values of lighting

indicators is the ones’ place of thermistor temperature.

Room display

Corresponding

values

8
4
2
1

e.g.) When freezer compartment thermistor is –25 ºC.

“ ” “ ”

Lighting

Blinking

Display during
thermistor temperature
check mode

a) Serial number
“6” : Freezer

b) Tens’ place

“2”

c) Sign
“-”

d) Ones’ place
“5” (=4+1)

Changing the thermistor on display

While thermistor temperature is on display, press .

Each press of the button makes a “beep” sound and changes the kind of thermistor.

Each thermistor is displayed using the serial numbers described in a) in numeric order repeatedly (1: refrigerator
compartment ~ 11: thermopile).

Refrigerator compartment slide chilled compartment ice making compartment versa compartment vegetable

compartment

freezer compartment defrosting ice tray outdoor air deodorization thermopile

When this mode is set, the display always starts from the refrigerator thermistor.
Slide chilled compartment thermistor can be selected; however, it is ineffective because slide chilled compartment thermistor

is not installed.

Deodorization can be selected; however, it is ineffective in thermistor temperature check mode.

Release

With the ice making compartment’s door opened, press and simultaneously for 3 seconds until a “beep”
sound is heard. The screen returns to the normal temperature display.

The function is automatically released in one hour.
Although unplugging and plugging the power code can release this function, it is recommended to follow the procedure

above for protection of the compressor.

18

5) Error history display mode

The errors occurred in the past can be observed as an error history. Use this mode when the actual problem of
the refrigerator is different from the error that was displayed at the service-call received.
Error history display mode offers two ways of display. One of the two is “history display mode,” which shows all
errors occurred in the past in numeric order of the error code; the other is “order of occurrence mode,” which
shows the newest 5 errors (at the maximum) from the newest to the older.
Error history display mode starts with “history display mode.”

Setting

With the ice compartment’s door opened, press and simultaneously for 3 seconds until a “beep” sound is
heard. blinks.

With the door opened, press

and simultaneously for 3 seconds until a “beep” sound is heard.

History error mode starts. Once this mode starts, it continues operating even if a door gets opened.

Display during error history display mode

During error history display mode, blinks and lights up.

Display of error history information.

a)

Mode display

b) Error code
Tens’ place

c) Error code
Ones’ place

“ ”

Lighting

Display during error
history display mode

Blinking

a) Mode display

Display the selected mode between “history display mode” and “order of occurrence mode.”

b) Error code tens’ place

It displays the tens’ place of error code.
It applies the same representative method as the error display of self-check.

c) Error code ones’ place

It displays the ones’ place of error code.
It applies the same representative method as the error display of self-check.

Switching over the mode

Press to select one of the error history display modes. Each press of the button makes a “beep” sound and
switches over between “history display mode” and “order of occurrence mode.”

Compartment Error history display mode

History display mode Display all errors occurred in the past in numeric order of the error code

Order of occurrence mode Display the newest 5 errors (at the maximum) from the newest to the older.

Tens’ place

Ones’ place

Error code

Pre-display

3sec.

0.5

sec.

Repetition

0.5

sec.

0.5

sec.

0.5

sec.

5sec. 5sec. 5sec.

E01 E13 E31

3sec.

Pre-display

Display method

Display method of the error code is the same as self check error display. (Refer to 5-2(3)); however, all indicators used for
the display of error code light up simultaneously for 3 seconds before the first error code is displayed (“pre-display”).
e.g.) When errors occurred in the following order:
fan motor error (E31) communication error of operation panel (E01) refrigerator thermistor error (E13)

• Display during history display mode

Errors are displayed in numeric order.

19

•Display during order of occurrence mode

Errors are displayed from the newest to the older.

Tens’ place

Ones’ place

Error code

Pre-display E13 E01 E31

3sec.

0.5

sec.

Repetition

0.5

sec.

0.5

sec.

0.5

sec.

5sec. 5sec. 5sec. 3sec.

Pre-display

When no error occurred in the past, error code is not displayed.

Check points and resetting the error history

Check and take appropriate measures according to the procedures as stated in 5-2(1).

Conduct self-check again to confirm there is no malfunction. (Make sure all connectors are connected properly and there is
no loose connection.)
Refer to “ Setting” above and activate the error history mode again. With the ice making compartment’s door opend,

press

for 3 seconds to reset error history. (Resetting the error history is completed.) If it is completed correctly,

no error code would be displayed.

Release

With the ice making compartment’s door opened, press and simultaneously for 3 seconds until a “beep”
sound is heard. The screen returns to the normal temperature display.

The function is automatically released in one hour.
Although unplugging and plugging the power code can release this function, it is recommended to follow the procedure
above for protection of the compressor.

a) Compartment
serial number

b) Set temperature
adjustment level

“ ” “ ”

Lighting

Display during set
temperature
adjustment mode

Blinking

6) Set temperature adjustment mode

Switch operation on the operation panel changes the set temperature in each compartment.

Setting

With the ice compartment door opened, press and simultaneously for 3 seconds until a “beep” sound is heard.
blinks.

With the door opened, press

and simultaneously for 3 seconds until a “beep” sound is heard.

Set temperature adjustment mode starts. Once this mode starts, it continues operating even if the door gets closed.

Display during set temperature adjustment mode

During set temperature adjustment mode, blinks and lights up.

Control state display of each compartment

20

a) Compartment serial number

Serial number of the selected compartment for set temperature adjustment is displayed on the part that are usually used

for room display.

Each serial number is assigned to each compartment that will be used in set temperature adjustment mode besides damper

operation mode and thermistor temperature check mode.

The sum of the corresponding values of the lighting indicators is the compartment serial number.

Room display

Corresponding

values

8
4
2
1

Serial number Assigned compartment Set temperature adjustment mode

1 Refrigerator compartment
2 Slide chilled compartment
3 Ice making compartment
4 Versa compartment
5 Vegetable compartment
6 Freezer compartment
7 Defrosting
8 Ice tray

9 Outdoor air
10 Deodorization
11 Thermopile

/ : SW operation is effective/ineffective

b) Set temperature adjustment level

Adjusting the set temperature

(1) Select the compartment with button.
(2) Each press of the button makes a “beep” sound and changes the compartment to adjust the set temperature.

Each compartment will be displayed using the serial numbers (1: Refrigerator compartment~ 6: Freezer
compartment) in numeric order repeatedly.

Refrigerator compartment slide chilled compartment ice making compartment versa compartment

vegetable compartment freezer compartment

Set temperature adjustment operation of slide chilled compartment is possible; however, it is ineffective because slide chilled

compartment thermistor is not installed.

(3) Select the adjustment level of set temperature with .
Each press of the button makes a “beep” sound and changes the adjustment level of set temperature.

There are 5 adjustment levels of set temperature (

2 & 0), and the selected level is displayed.

The indicator that lights up represents minus (−).

Adjustment level Temperature adjustment display

Change of the set

temperature

+2

About +2 ºC
+1 About +1 ºC
±0 No change

−1 About −1 ºC

−2

About −2 ºC

The changed adjustment levels are stored on the control board. If the control board is replaced, the updated information will be lost.

Release

With the ice making compartment’s door opened, press and simultaneously for 3 seconds until a “beep”
sound is heard. The screen returns to the normal temperature display.

The function is automatically released in one hour.
Although unplugging and plugging the power code can release this function, it is recommended to follow the procedure
above for protection of the compressor.

21

Door Buzzer System :

Door buzzer has been installed so that one will not forget to close the door.

• The buzzer rings in the following conditions:

1. When door is left open.

2. When refrigerator fan motor or box fan is abnormal.

1. The buzzer rings to inform the open door when the door of ice making compartment, refrigerator compartment, or freezer
compartment is left open for more than 1 minute.

• The buzzer rings every minute. After 5 minutes, the buzzer rings continuously.

• The buzzer will stop ringing as soon as the door is closed.

• When the buzzer does not stop even if all the doors are closed, the door switch may be abnormal.

The buzzer can be stopped by the following operations.
Perform the ice making test operation. (Refer to 5-2(1).)
(Note: If the test is conducted with water in the ice tray, water may fall into the ice storage box
because the tray is rolled over in the ice making operation.)
Synchronizing the buzzer sound, the indicator(s) of the compartment(s) with door(s) that are(is) left
open blink(s) to alert.

2. Buzzer sounds when a trouble is found in refrigerator fan motor or in box fan. The buzzer sounds
every time the door is closed until normal operation is obtained.
(Check the error code by following the steps in Specification of display in self-check result on page 22.)

Buzzer

1. When door is left open

Every 1 minute, for 4 minutes "Beep beep" 4 times
After 5 minutes “"Beep beep" continuously

2. Refrigerator fan motor or box fan is abnormal "Beep beep" 2 times

Interior LED :

• Interior LED inside the refrigerator compartment lights when the door of refrigerator compartment or ice making compart­ ment is open.

• When interior LED is lighted continuously for more than 60 minutes, it is turned off to prevent heating.

• The protection is released when doors of refrigerator compartment and ice making compartment are closed. Then, interior
LED will be lighted the next time at normal timing.

Blinks while
interlocking

with “beep, beep”

tone.

22

MR-E55R-C
MR-E60R-C
(1) Troubleshooting with self-check

This refrigerator has self-check feature to clarify and indicate where & what the trouble is.
You can perform operation checks and identify malfunction of electric or electronic parts.
Error history is recorded and can be displayed by the refrigerator.

5-2 FLOWCHART OF SELF-CHECK

Self-check

Error history mode (Refer to 5-1.(6)5))
Problem may recover automatically.
Perform the following if error is not displayed
before taking measures or the error which was informed
from user by telephone is not displayed.

Operate the ice-making test.
(Current displayed error: Refer to
in the table below.)
The display of ice making compart­ment setting will blink during the test.

Self-check

Plug the power cord into outlet.
(Current displayed error:
Refer to in the table below.)

Locate the trouble according to error
display. (See page 23-25)

Is error displayed?

Is error displayed?

Is error displayed?

Release error displayed
mode, and the self-check
is finished.

Release error display
mode and perform the
self-check again.
(go to )

Yes

No

Is error displayed?

Was more than one error

displayed during repair?

No

Yes

No

Yes

NoYes

Yes

Yes

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

*Wait 10 minutes
before plugging
the cord once
it's unplugged.
(If the cord is
plugged in within
10 minutes, error
may be displayed.)

Unplug the power cord from outlet.

Repair /replace defective part(s)
according to error display.

Self-check is finished.

Set the error display mode.

Reset the error history.

(Refer to 5-1.(6)5))

Perform self-check
procedures through .

Perform error
history mode.

No

No

Was the error which was informed
from user by telephone displayed?

And were measures taken?

Perform error
history mode.

Note1: Self-check cannot detect abnormalities in the following parts.
See page 28-41 for troubleshooting.
Door switch
Motor damper
Heater (Water pipe/Vegetable compartment heater, etc.)
Water pump motor
Note2: If any abnormality is found when plugging the power cord,
compressor and fan motor are suspended for 10 minutes.

Note3: The alarm beeps when some abnormalities (motor-locked) have
occurred at the refrigerator fan motor or box fan restarts its normal
operation.

Note4: If any abnormality occurs in compressor's inverter circuit,
the compressor and the refrigerator fan motor stop for 10 minutes
(not only when plugging the power cord).

Self-check and error display method and operation

Release of self-check display mode
Self-check finishes automatically. Error cord display is automatically released 10 minutes later.

Operation method Display or self-check operation Display period OthersItem

Ice making test operation.
All items except (*6) listed
up on the table at page
25 will be checked.

1.Conduct the automatic ice making test.
(The display of ice making compartment
setting blinks)

2.When trouble is found, all error codes
are displayed.

3.When error is not found, nothing is
displayed.

For 10 minutes
after setting.

Self-check is not available
during child lock, cooking
timer, changing the rotati­onal speed of compressor,
checking the temperature
of thermistor, damper ope­ration and demonstration
modes.

Self-check is not available
during child lock, cooking
timer, changing the rotati­onal speed of compressor,
checking the temperature
of thermistor, damper ope­ration and demonstration
modes.

Self-check is not available
during demonstration
mode.

For 10 minutes
after power is
supplied.

For 1 hour after
setting, or until
mode is released.

1.When trouble is found, all troubles except
E50 ~ E55 are displayed.

2.When error is not found, nothing is

displayed.

1.When trouble is found, all troubles except
E50 ~ E57 are displayed.

2.When error is not found, nothing is

displayed.

Press the switch.
for 5 seconds.

(“Beep” is heard)

Plug the power
cord into outlet.

Refer to 5-1.(6)5)
Error history
display mode.

Power input.
All items except (*6) listed
up on the table at page
25 will be checked.

Error history

Self-check

(current displayed error)

Display error

history.

23

(3) Error display and trouble locating

1. Display details

After conducting the self-check referring to 5-2(1), flashes repetitively and the error code will be displayed and divided
into tens’ place and ones’ place if any.
When two or more errors occur, they are displayed alternately. The error whose code has smaller number has priority to be
displayed first. There are 0.5 seconds intervals between the error codes

(2) Timing in self-check

Trouble of Defrost heater : Self-check is conducted after defrosting.
(Make sure to confirm the display before unplugging the power cord
because it is automatically reset once the power cord is unplugged.)

Trouble of Ice maker : Press the switch on the panel for 5 seconds. (Ice making test mode)
The setting of ice making compartment blinks on display during the test operation.

Trouble of Fan motor : Open the door and then close it.
When abnormality is found in fan motor, buzzer sound is heard every time the door is closed.
Trouble of Inverter : Check the error when compressor starts up or is operating.
Trouble of Thermistor : Self-check is continuously working

For 2 minutes in self-check, a high-tone sound is heard due to the operation check of damper.

2. Check point and measures

b) Error code

Tens’ place

…

c) Error code

Ones’ place

…

Flashing

Room display

Corresponding

values

8
4
2
1

Ice making mode display Corresponding values

84
21

e.g.) In case the errors of refrigerator thermistor (E13) and ice maker gear box (E33) are occuring simultaneously.

Tens’ place

Ones’ place

Error code

0.5

sec.

0.5

sec.

0.5

sec.

5sec.

E13 E33 E13 E33

5sec. 5sec. 5sec.

Display

Error
code

Display

Trouble

Detecting method

(*3)

Check point Measures Control

Tens' place

Ones' place

Self-check

Testing

(*1) Ice maker is under testing

Error display

E

01

(*4)
Communication
error of
operation panel

When the following com­munication errors occur
between control board and
operation P.C. board:

• They transmit and receive
data that has nothing to
do with settings.

•

They cannot transmit

and

receive data each

other for about 2 seconds.

1. Connector CN10K, CN9S, CN5D on con­trol board

5-pin wire to wire connector (hinge)
5-pin connector on operation P.C. board

Repair the
contact failure.

Keep the same operation
as the one before the
communication error has
occurred.

2. Trouble of control board and operation
P.C. board

Replace.

E

02

Communication
error of inverter

When abnormality is found in the
communication between refrig­erator control circuit and inverter
control circuit in control board.
(When they do not transmit and
receive data for 10 seconds.)

Replace the
control board.

Compressor OFF.

E03

Trouble of
model judge­ment

When the model of
control board is different
from that of operation
P.C. board.

1. Check the model name of control board. Replace. Keep operating the unit,

and conduct error code
indication only.

2. Check the operation P.C. board. Replace.

E10

Trouble of ice
making tray
thermistor

When there is a short
or open circuit in the ice
making tray thermistor.

1. Connector CN9S on control board, ice gear
box 6-pin wire to wire connector, 8-pin wire
to wire connector

Repair the
contact failure.

When the compartment door
has been closed for 3 hours
and when freezer compart­ment thermistor is -10 or
less, ice-detecting operation
starts.

2. Check the resistance of thermistor. Replace.

E11

Trouble of
freezer com­partment
thermistor

When there is a short
or open circuit in the
freezer compartment
thermistor.

1. Connector CN9S on control board,

4-pin wire to wire connector

Repair the
contact failure.

After 10 minutes off, the
compressor repeats 30­minute ON and 20-minute
OFF.

2. Check the resistance of thermistor. Replace.

E12

Trouble of
defrost
thermistor

When there is a short
or open circuit in the
defrost thermistor.

1. Connector CN9S on control board,

2-pin wire to wire connector

Repair the
contact failure.

The defrost heater won’t
be turned ON.

2. Check the resistance of thermistor. Replace.

24

Display

Error
code

Display

Trouble

Detecting method

(*3)

Check point Measures Control

Tens' place

Ones' place

Self-check

Error display

E13

Trouble of
refrigerator
thermistor

When there is a short
or open circuit in the
refrigerator compartment
thermistor.

1. Connector CN9S on control board,
4-pin wire to wire connector

Repair the
contact failure.

Synchronize the open/
close status of R damper
with that of compressor
ON/OFF.

2. Check the resistance of thermistor. Replace.

E15

Trouble of
versa com­partment ther­mistor

When there is a short or
open circuit in the versa
compartment thermistor.

1. Connector CN9S on control board,
6-pin wire to wire connector

Repair the
contact failure.

• When S-compartment
is used as “freezer”:
S-damper is open when
compressor is turned
on, S-damper is closed
when compressor is
turned off.

•

When S-compartment
is used as other than
“freezer”: S-damper
remains open for the
first 3 minutes and then
closed for the rest of
time.

S-compartment: Versa

(select) compartment.

2. Check the resistance of thermistor. Replace.

E16

Trouble of veg­etable compart­ment thermistor

When there is a short
or open circuit in the
vegetable compartment
thermistor .

1. Connector CN9S on control board, 2-pin
wire to wire connector

Repair the
contact fail­ure.

•

When R-damper is open,

V-heater is turned on.

• When R-damper is
closed, V-heater is
turned off.

2. Check the resistance of thermistor. Replace.

E17

Trouble of ice
making com­partment
thermistor

When there is a short
or open circuit in the ice
making compartment
thermistor.

1. Connector CN9S on control board, 6-pin
wire to wire connector

Repair the
contact fail­ure.

• When ice making com­partment is used as
“refrigerator”, synchronize
I-damper with R-damper.

• When ice making com­partment is used as “ice
making”, synchronize
I-damper with F-damper.

2. Check the resistance of thermistor. Replace.

E18

Trouble of
outside air
thermistor

When there is a short or
open circuit in the out­side air thermistor.

Replace the
operation
P.C. board.

Compressor is activated
at “Speed-level 2.”

E23

Trouble of
thermopile

When there is a short or
open circuit in the out­side air thermistor.

Relay connector 10 pin 2 positions.

Refer to "5-9.3 Failure diagnosis for the

thermopile (HIKARI i-see Sensor)".

Perform supercool freez­ing control in emergency
operation mode.

E30

Trouble of
defrost heater 1
(*6)

When defrosting is not
finished in 2 hours.

1. Connector CN2A on control board,
Defrost heater plug and receptacle,

1-pin wire to wire connector,

Thermal fuse 4-pin wire to wire connec-

tor

Repair the
contact fail­ure.

The defrost heater is
stopped and if the next
defrosting finishes in 2
hours, the error code will
disappear.

2. Check the resistance of defrost heater. Replace.

3. Check the continuity of thermal fuse. Replace.

E31

Trouble of
refrigerator
fan motor

• When motor doesn’
t rotate even though
power is on.

• When the waveform,
which indicates the
rotation times of motor,
cannot be detected.

1. Connector CN5D on control board,
Refrigerator fan motor 4-pin wire to wire

connector

Repair the
contact fail­ure.

•

3 minutes later, the refrig-

erator fan motor is reacti­vated to be checked.

• Until the fan motor gets
to operate correctly, the
buzzer sounds every
time the door is closed.

2. Check refrigerator fan motor operation. Replace.

E32

Trouble of box
fan

• When motor doesn’
t rotate even though
power is on.

• When the waveform,
which indicates the
rotation times of motor,
cannot be detected.

1. Connector CN4D, CN5D on control
board,

Box fan, 4-pin wire to wire con-

nector

Repair the
contact fail­ure.

• 3 minutes later, the box
fan is reactivated to be
checked.

• Until the fan motor gets
to operate correctly, the
buzzer sounds every
time the door is closed.

2. Check box fan operation.

Replace.

E33

Trouble of ice
maker gear
box

When the gear box
operation is not finished
in 30 seconds.

1. Connector CN8K, CN10K on control board, ice gear box
6-pin wire to wire connector, 8-pin wire to wire connector

Repair the
contact failure.

100 minutes later, the
gear box is reactivated to
be checked again.

2. Ice gear box frozen point Replace.

3. Check the trouble of the ice gear box
with the ice making test operation.

Replace.

E34

Clogging of
refrigerant
pipe or trou­ble related to
compressor

(T0: Defrost thermistor
temperature at power
input, T1: Defrost ther­mistor temperature when
15 minutes have passed
from the power input)

•When the difference
between
T0 and T1 is T0

T1. (*5)

Check the compressor and the pipe. When cooling operation

returns to normal condi­tion, the display of error
code disappears.

E41

Trouble of
solenoid
three-way
valve

When defrost thermistor
reads -10 or above in five
minutes after the compres­sor’s startup. (*5)

Connector CN4D on control board,
5-pin connector to three-way valve

Repair the
contact fail­ure.

Check the operation of
solenoid three-way valve
and then open the valve.

25

*1 : The setting of ice making compartment will be displayed and blinks during or after ice making test operation.
*2 : This operation is called the recovery operation:
If the damper has not operated ever once during the compressor operation, make the damper operate when the compressor stops.
*3 : When the resistance is

, the circuit is deemed open-circuited.
When the resistance is 0 , the circuit is deemed short-circuited.
*4 : Once E01 is detected, other errors would be ignored and not displayed on the panel.
*5 : Characteristic value may change in order to improve the product.
*6 : The error codes E50 to E55 are not displayed even if those abnormalities occur at power input.
Therefore, be sure to perform ice making test operation in order to check if any abnormality indicated by these error codes occurs. (See page 22.)
*7 : If those errors still continue for 1 minute after the restart, E56 will be displayed again.

Display

Error

code

Display

Trouble

Detecting method

(*3)

Check point Measures Control

Tens' place

Ones' place

Self-check

Error display

E50

Trouble of
inverter circuit

• When there is any
trouble in the circuit
which detects current
of compressor.

Refer to “Compressor does not operate” at page 30.

The compressor is sus­pended and reactivated
10 minutes later.

E51

Trouble of
bus-bar volt­age

•

When the range of bus-

bar voltage is not approx.

50 ~ 380 V DC.

E52

Trouble of
inverter software
reset function

• When the inverter driv­ing software malfunc­tions.

E53

Trouble of
startup, syn­chronization
or overcurrent
detection

• When there is no cur­rent at compressor
startup.

• When phase current
exceeds 5.5A at com­pressor startup.

•

When phase current
exceeds 3.3A during com­pressor operation.

•

When current of 5.3A or

more runs into the bus­bar of control board.

E55

Trouble of
control board
(EEPROM
related trou­ble)

EEPROM (IC11M)
accumulates data neces­sary for control.

• When the data are not
input accurately.

• When microcomputer
cannot read the data.

Replace the
control
board.

When abnormality occurs in
power input, the compres­sor is suspended for 10
minutes.
When abnormality occurs in
normal operation, the com­pressor keeps operating.

E56

Defective wir­ing connecting
or trouble of
control board

The errors E50 to E53
keep occurring over one
and a half hour. (The
situation, which compres­sor cannot be operated,
continues.)

Refer to “Compressor does not operate” at page 31.

• Error display starts after
it is regarded as E56.

• Error display continues
until defrosting starts or
cooling operation gets
back to normal. (Error
display doesn’t disap­pear by unplugging and
plugging the power cord.
*7)

• Try to restart compressor
every 3 minutes.

E57

Inverter drive
module abnor­mality

When the overcurrent
error is detected before
starting the compressor
(failure of the IC in the
inverter drive module).

Replace the
control
board.

Try to start the compres­sor every 3 minutes.

(*6)

(*6)

(*6)

(*6)

(*6)

26

MR-E55R-C
MR-E60R-C

5-3 BLOCK DIAGRAM OF PRINTED CIRCUIT BOARD

MR-E55R-C
MR-E60R-C

(1) Ice making cycle

(2) Automatic ice maker circuit

5-4 AUTO ICE-MAKER

CN2A

CN5D

CN10K

CN9S

CN1A

Water pump motor

LED for bacteria
removal from water
tank

6-pin connector

6-pin connector8-pin connector

Ice tray thermistor

Ice making
compartment
thermistor

Water pipe heater

Water tank heater

9-pin connector

Ice making
gear box

Control board

Ice stock

Ice is stocked in the ice storage box.
Ice making capacity is about 100 ­120 cubes a day.
Stock capacity of ice cubes is about
100 cubes.

(With 8-cube ice tray)

Ice ejection

After the detection lever checks
the amount of ice, the ice tray
is rolled over for ice ejection.
When the ice storage box is

filled with ice, the ice tray does
not roll over.

Water supply

The ice tray is filled with water
from the water tank.

Parts outside/inside refrigerator

For 311V DC system

• Compressor
For 110V AC system

• Defrost heater 1

• Defrost heater 2

• Water tank heater

•

Vegetable compartment heater

• Rotational heater board

• Water pipe heater

• Ice making tray heater

For 5V DC system

• Freezer compartment thermistor

•

Refrigerator compartment thermistor

• Defrost thermistor

• Door switch (for refrigerator com­partment, ice compartment & freezer

compartment)

• Ice tray thermistor

• Ice making compartment thermistor

• Vegetable compartment thermistor

• Position-specifying switch in ice

maker gear box

• Versa compartment thermistor

For 12V DC system

• Refrigerator fan motor

• Box fan

• Motor damper

• Ice maker gear box

• Three-way valve

• LED for bacteria removal from
water tank

• I-see sensor motor

• Interior LED

•

Refrigerator deodorization LED

• Versa compartment supercool
freezing LED

• Vegetable compartment LED

Ice making

Ice tray thermistor watches
and controls the ice making
operation

Operation P.C. board

• Setting up temperature, feature, quick mode and eco mode for each
compartment

• Display of self-check

• Outside air thermistor

• Buzzer

Control board

Control circuit of refrigerator

• Read/control each compartment tem­perature (Neuro-fuzzy)

• Control on timers

• Operation control of the parts such
as fan motor or heater, etc. equipped
inside/outside

Inverter control circuit of compressor

• Inverter control of compressor

• Inverter-drive power module

• Detection of bus-bar voltage

27

Ice making test completes
about 20 seconds later.

(3) Operation by ice making test

Press the
switch for 5 sec­onds or more.
(See 5-2(1) “• Self-check
and error display method
and operation,

Ice

making test operation”

Ice stock detective
lever detects the
amount of ice.

Detective lever once
comes down to detection
point then returns to the
original position.

The ice tray is
rolled over and the
system is reset.

The ice tray rolls
over once to drop the
ice, then returns to
the original position.

Water pump motor
is operates.

Remove the lid of
the water tank then
check the sounds of
water running.

Completion
When abnormality
occurs, the error code
is displayed on the
panel.
Inspect the abnormal
points by referring to
page 23-25.

Ice tray

Detection lever

(Upper ice making compartment)

[Check point of automatic ice maker operation]

* Never touch the automatic ice maker while it is operating.

After the operational test, a popping sound is heard several times because the operation of three-way valve is checked auto­matically. During the operation, do not insert a hand into the automatic ice maker.

(4) Maintenance for water pump and water pipe

The inside of the pump can be cleaned after disassembling the pump in the water tank.
The inside of the pipe can be cleaned after disassembling the water supply pipe in the tank holder. Follow the procedures below
when disassembling, cleaning, and assembling the pump and the pipe.
Be sure to explain to customers that they need to clean the water pump and the water supply pipe once a month.
After the test run, a “pop” sound is heard several times to automatically confirm the proper operation of the three-way valve.

(Lower-left part of refrigerator compartment)

Check here.

Water pipe · Tank holder

1. Pull out water supply
pipe. Wipe the tank
holder with clean cloth.

• Do not let water flow into
the tank holder.

Water pump

1. Pull out the pipe.

2. Turn the tank
pump to detach.

5. Put the parts back in the reverse order of disas­sembly.

3. Pull out the tank pipe, turn the cap
to remove, and then wash the pro­peller with water.

• The propeller is made
of the magnet.

Wash it well with water

so that no alien sub­stance remains on it.

4. Remove the light-type bacteria removing filter and
wash it in water.

Normally the filter needs not be replaced. However, replace it
in the following condition:

• When the filter is clogged by passing something other than

water through the filter.

• When the filter is broken.

In such a case, contact the dealer where you purchased
this refrigerator.

Light-type bacteria removing filter

Cap

Propeller

Tank pipe

Cover

Tank
pipe

Water
tank

Water pump & Light-type bacteria removing filter

3. Reverse steps to replace the pipe.

Water
pipe

Tank holder

Side A

Side B

Water pipe

• Replace the water
pipe.

Be sure that sides
A and B fit flush to
each other.

2. Separate pieces and wash with water.

Packing

Aluminum pipe

• Twist the
aluminum
pipe to
replace it.

(5) Troubleshooting for automatic ice-maker

Trouble with ice-making

Water or ice is on the

ice tray

The ice-maker gear box may be defective, cooling may be poor or ice cubes may be full in the ice storage box.

The ice does not

come out from the

tray

1. Check inside of the ice storage box. • Ice cubes are not stored flatly
and the amount is detected
as full.

•

Food inside the ice storage box

Inspection

2. Measure the resistance of ice tray thermistor circuit. • Open circuit ( ) or short
circuit (0 )

Replace the ice tray

thermistor.

3. Check if the temperature of the freezer compartment

is cool enough.
(It takes longer to make ice during summer days
or if the door is frequently opened.)

• Not enough

Poor cooling

No water or ice in the ice tray

The water saucer may be defective, or the ice tray may get cracked.

Water in

water sau-

cer

4. Check the water pipe for dirt and foreign objects. • Clogging

• Freezing (For freezing, check
installation and measure
the resistance of water pipe
heater and tank heater.)

Clean the water pipe.
Deice
Check connection of

water pipe heater and
tank heater.

No waterdrops in water

saucer

5. Check the condition of ice tray. • Broken or cracked

• Not placed properly

Replace the tray.
Reinstall it properly.

6. Disassemble the water pump and check the inside of
the pipe.

• Dirt or foreign objects

Repair and explain to the
user for proper usage.

7. Tank pipe is clogged, has a hole or is not

properly installed.

• Clogging, disconnecting

• Hole or crack

Clean/Reinstall it prop-

erly.

Change the tank pipe.

8. Check the coil resistance of pump motor. • Open or short circuit

Check the water pump.

9. Check if there are any dirt or foreign objects which
are difficult to remove in the water tank. Also, check if
there is any crack or deformation on the tank.

• Crack or deformation

Change the water tank.

Water in the tank holder

10. Check the water pipe for dirt and foreign objects.

Also, check the water pipe position and connection.

• Clogging, disconnecting

• Hole or crack

Clean/Reinstall it prop-

erly.

Replace the pipe.

Chained ice,
water leaking from the
ice server

11. Check the water pump operation by the ice-making

test

• Water filling period is longer
than 9 seconds.

Replace the control

board.

12. Water spill at the installation of water tank or more water over the full water level may cause formation of
chained ice.

13. Measure the water pump coil resistance. • Open or short circuit Change the water pump

motor.

Excessive cooling No cooling, poor cooling

28

MR-E55R-C
MR-E60R-C

5-5 FLOWCHART OF TROUBLE CRITERION

Refrigerator compartment/ Slide chilled compartment
[1]

Set the temperature to
“Low”.

No

Keep the food away
from air outlet.

Yes

Yes

Set the temperature to
“High”.

No

Proceed to [5] at page

32.

No

No

Normal

No

Yes

Yes

The baffle does not operate

Yes

Repair the frosted part.

Refrigerator compartment
thermistor abnormal

Replace the refrigerator

compartment thermistor.

Is the temperature of
refrigerator compart­ment/ set to “Low”?

Only food around the
air outlet gets frozen.

Is the temperature of
refrigerator compart­ment/ set to “High”?

Check the refrigerator compartment thermistor.

Replace the motor damper (for refrig­erator compartment/slide chilled com­partment)

Motor damper is combined with

fan grille assembly.

Is the motor damper (for refrigerator compartment/slide
compartment) covered with frost?

Expose the damper (for refrigerator compartment/slide com­partment) so that its operation can be visibly checked and
conduct an ice-making test. Does the baffle open/close?
(Wait 1 minute for self-check).
(See “Self check method and its operation, Ice making
test operation” at page 22.)

Dip refrigerator compartment thermistor into ice water (0 ),
disconnect the 2-pin connector, and measure resistance
between (white) and

(white).

• Resistance at 0 : approx. 6-7k .

CN9S

4-pin connector

Weak

Low

HighMiddle

Refrigerator
compartment

Cooling Strong

Refrigerator compartment
thermistor

Control board

Adjustment of the set temperature is
possible.

Page 20

Open the refrigerator
compartment door and
attach a magnet on the
door switch to check that
cold air blows from the
outlet. (See 1)

Refrigerator

compartment

Versa
compart­ment

Ice
making
compart­ment

Attach a
magnet bar
here.

1

Poor cooling

29

CN50G

CN1A

CN1 CN2

Filter board

Control board

Noise filter

Compressor

Lead wire assembly

Reactor

Motor
protector

2

-pin

connector

2

-pin

connector

Not cooling at all (In case any error codes doesn’t appear as shown in pages 30, 31 even though switch is pressed for 5 seconds)

Freezer compartment
[2]

Exchange the unit.

Replace the lead wire
assembly (lead wire of
compressor).

Abnormal

No

Yes

Set the temperature to “High”.

No

Proceed to “The refrigerator fan motor does not work.”

No

No continuity

Abnormal

Normal

Replace freezer compartment thermistor

1

Is the set temperature of freezer compartment set to “High”?

Does 110V AC run between and termi­nals of CN1 on filter board?

3

Defective thermistor

Check freezer compartment thermistor.

When compressor
operates,

E41

is dis­played as a result
of self-check.

Normal

Control board

4

-pin connector

Freezer
compartment
thermistor

CN9S

Is the voltage between and , terminal of
CN2 on the filter board 110V AC?

Yes

Remove the CN1A connector on the control
board and the CN2 connector on the filter
board and check for continuity between the
CN1A terminal

and the CN2 connector ter­minal on the wiring side. (Check for short
and/or open circuit on the motor protector.)

Detach connector CN50G on con­trol board and check the resistance
respectively between terminals of

, and

:approx. 12.4 .

Check the error display of self­check after turning on and off the
power supply.

With all the connectors connected.

Inverter-related parts may be
defective. Conduct ice making
test operation. (See pages 30, 31
for error codes.)

Continuity detected

Continuity detected

No

Inspect power-supply wiring such as power cord and
breaker etc.

Replace the filter board.

Motor protector (open circuit)

Just in case, by measuring the

resistance, ensure that the cir­cuit is open.

Measure the resistance of com­pressor’s winding between termi­nals of black, white, and red:
approx. 12.4 .

Compressor does not operate

[3]

Exchange the
unit.

Yes

Is refrigerator in the demonstration mode?

Release the demonstration mode. (See page 11.)

No

Dip freezer compartment thermistor into ice water (0 ), and
measure the resistance between terminal (white) and
(white) by detaching 2-pin connector at the left-back bottom
of vegetable compartment.

•Resistance at 0 :approx. 6~7k .

Yes

Yes

Does cool air come out of air outlet when opening the refrigerator
compartment door and attaching a magnet bar on the door switch ?

2

Adjustment of the set temperature is
possible.

Page 20

No continuity

30

Inverter-related indication “Compressor does not operate”

Error
code

Abnormality

Possible cause

Symptom Measures

E50

• Abnormal
start-up

• Abnormal syn­chronization

• Trouble of
overcurrent
detection

• When there is
any trouble in
the circuit which
detects phase
current of com­pressor.

E51

Compressor
does not
rotate.

Replace the control board.

Bus-bar
voltage is
abnormal.

• Power supply
voltage is abnor­mal.

• Defective reac­tor on the N/F
board

Replace the control board.

E52

E52 displays again.

Check the error code by performing the ice making test operation.

Trouble of
inverter circuit

Compressor
does not
rotate.

Arrange
power sup­ply to obtain
the rated
voltage,
99~121V.

Start

Measure the voltage of

power supply.

99V or

less

121V or more

Does 121V AC run
between CN1A ter­minals

and , on
the control board?
(See page 42.)

Arrange power supply to make the volt­age within 121V and conduct the following
checks.

Check the
connection
between filter
board and
control board.

Connect
them
properly.

Abnormal

Replace the
filter board.

Yes Normal

Replace the
control board.

No

Trouble of
inverter software
reset function

• When the
inverter driving
software mal­functions due to
electric noise.

Unplug the power cord and wait more than 10 minutes then plug it again

No error code display

Explain to customer.

E53

• Compressor
motor gets
locked.

• Defective circuit
on control board

• Defective con­tact of CN50G
on control board

Compressor
does not
rotate.

Compressor
does not
rotate.

Start

Remove the CN50G
connector on the con­trol board, and meas­ure the resistance
on the compressor.
Are the resistances
between the terminals

-

, - , and

- respectively

approx. 12.4

(20 )?

Exchange
the unit.

Yes

*If control board is normal, compressor is energized

every 10 minutes.

Compressor vibrates at startup when it is being ener-

gized. Touch it with your hand to check.

Measure the
resistance
of compres­sor’s winding
between each
terminal. Is
the resistance
approx. 12.4
(20

)?

No

No

Replace the
compressor.

*Replace lead wire assembly.

*Is compressor
energized at
startup?

Check the connection status
of the CN50G connector on
the control board.

No

Correct the
connection of
the CN50G
connector on
the control
board.

Abnormal

Replace the
control board.

Yes

Yes Normal

31

Inverter-related indication “Compressor does not operate”

Error
code

Abnormality Possible cause Symptom Measures

E56

Compressor
cannot be
activeted for
more than 1.5
hours.

1. Locate the trouble and decide the measures.

• Decide the measures by checking the followings.
(1) Defective connector connections.

(Board-side, wire to wire, comp-side)

(2) Resistance of compressor’s winding

2. Flowchart of troubleshooting

• Defective wir­ing continuity

• Trouble of the
control board

• Defective con­nection of con­nectors related
to compressor
(board-side,
relay, comp-side)

• Defective wiring
connecting of the
compressor

• Trouble of con­trol board

• Trouble of com­pressor

3. Recheck after measures

• After any measures are taken, unplug and plug power cord
again to check if the compressor operates properly.

• If the compressor can operate properly for more than 1
minute after power cord is plugged again, it’s presumed
that the cause of trouble is eliminated.

*If the cause of trouble cannot be eliminated,

E56 will be dis-

played again 1 minute later after the power cord is plugged
again.

*If the control board has been replaced, E56 won’t be dis-

played even though the cause of trouble is still not elimi­nated. In such a case, perform the ice making test operation
to check what the error is. At the same time, also confirm
that the compressor is operating for more than 3 minutes and
each compartment is getting cooled.

start

Connector CN50G on the
control board is properly
connected?

The connector of compressor
is properly connected?

Remove the CN50G
connector on the control
board, and measure the
winding resistance on the
compressor. , and
(Point1). Is the resistance
approx. 12.4Ω (at 20ºC)?

Measure the
resistance of
compressor’s
winding between
individual
terminals (Point 2).
Is the resistance
approx.

12.4Ω

(at 20ºC)?

Is compressor being
energized at startup?

Exchange the unit.

Connect properly.

Exchange
the unit.

Replace the lead wire assembly.

Replace the control board.

Replace it only when error display
keeps blinking even though all the
above mentioned connectors are
properly connected.

Check

No

Yes

Yes

Yes Yes

Yes

No

NoNo

No

Treatment

Compressor

Control board

Point+2 (to measure resistance)

Point+1 (to measure resistance)

For checking the connection
to compressor

For checking the lead wire
assembly to compressor

Lead wire assembly

CN50G

E57

Replace the control board.

Inverter drive
module abnor­mality

Failure of the
inverter drive mod­ule in the control
P.C. board

Overcurrent is
detected in the
inverter drive
module before
starting the com­pressor, and the
compressor does
not start rotating.

Poor cooling

32

Contact failure of
connector.
Connect it properly.

Poor defrosting
[4]

The refrigerator fan motor does not work
[5]

No

No

Yes

Yes (heats up)

Check the following and explain the
result: half-open door, space between
gaskets, the amount of ice.

Replace the defrost heater 1 and the
thermal fuse.

Check the resistance of the defrost
thermistor.

*1 The compulsory defrosting will not

work when the temperature of
the defrost thermistor is 14°C or
more.

CN9S

CN1A
CN2A

Control board

4-pin connector

4-pin connector

1-pin connector

Thermal fuse

Defrost heater 1

Defrost thermistor

Check if the connector on
the door switch is connect­ed properly. If it is, replace
the door switch.

Abnormal

Normal

Interior LED
is not turned
on and off.

Interior LED is turned on and off properly.

OFF

etc

ON

R-door (right, left): closed
Door of the ice making
compartment : closed

Any one of the doors
is open

Doors

3-Pin connector

between

and

1

3

1 2

5~10mm

Door of vegetable

compartment

Door of freezer

compartment

Left door of refrigerator

comparttment

Door of ice

making

compartment

Door

of

versa

compartment

Right door of refrigerator

compartment

Door switches for refrigerator compartment (right and left) and ice making compartment

No

Not rotating

Yes

Replace refrigerator fan motor.

Check if CN5D connector on control
board is connected properly.
If it is, replace the control board.

Running

No

continuity

Connect the connectors properly.

Continuity detected

Replace refrigerator fan motor.

CN9S

CN5D

Control board

8

-pin

connector

4

-pin

connector

Refrigerator
fan motor

Reed switch board
3

-pin connector

4

-pin connector

2

-pin

connector

Refrigerator compartment
(right and left)/ Ice making
compartment door switch

Freezer compartment
door switch

2

Unplug and plug the power cord to check if box
fan is rotating.

3

2

Check if there is continuity between thermal fuse
and defrost heater 1.

4

Check the continuity by
disconnecting the CN9S
on the control board.

1

<Control board>

Compulsory defrosting

Short circuit

CN7M

Note: Refrigerator fan motor is combined
with fan grille.

Note: Refrigerator fan motor is combined
with fan grille.

5

If any one of those doors is open, the switch between

and , terminals of 3-pin connector, will be OFF.

1

Short-circuit the terminals and of the compulsory
defrosting terminals (CN7M) of the control board to actuate
the compulsory defrosting function and check whether the
defrost heater is working properly. *1

1

Check the door switch for continuity.

• Open and close the refrigerator door several times and
check if the interior LED will be turned on and off (interior
LED should get turned off when the door comes 10 mm
close to the refrigerator body .)

• Close the refrigerator compartment door until the LED is
turned off . Open and close the ice making compartment
door , and from the space of refrigerator compartment
door, check that the interior LED is turned on and off.

Unplug and plug the power cord to perform self-check on
refrigerator fan motor. Is the display indicating abnormality?

Check if there is continuity in 4-pin fan motor connector in
versa compartment.

Excessive cooling

Poor cooling

33

Vegetable compartment

[6]

Set the temperature to
“Low”.

No

Set the temperature to
“High”.

No

Set the temperature to
“Middle” or “High”.

Yes

Is the temperature of
vegetable compartment
set to “Low”?

Is the temperature of
vegetable compartment
set to “High”?

Is the temperature of
freezer compartment
set to “Low”?

Yes

No

CN2A

CN5D

CN1A

CN9S

CN10K

CN5D

5-pin connector

Operation P.C. board

Outside air
thermistor
TH1

Vegetable
compartment heater

Vegetable
compartment thermistor

6-pin connector

2-pin connector

Motor damper
(for vegetable copartment/
versa compartment)

2-pin connector

Control board

Not frosted

No

Expose the damper (for
refrigerator compartment/
slide compartment) so that
its operation can be visibly
checked and conduct an
ice-making test. Does the
baffle open/close?

Connect the connector
properly.

No

Disconnect CN5D and measure
the resistances between and

, and between and .
Check that the winding of motor
damper (for vegetable compart­ment/ versa compartment) has a
resistance of approx. 415 .

0

or

Is 6-pin connector which is in connector cover
on the back of ice maiking compartment con­nected properly?
(6-pin connector is connected to motor damper.
Refer to the figure below.)

Defective thermistor

Replace the vegetable
compartment thermistor.

Check the thermistor on the vegetable compartment.

1. Dip the thermistor into ice water with a temperature of 0 .

2. Remove the 4 - pi n c onn ec tor f ro m th e c onne c tor b ox on th e
upper-left-front.

3. Measure between the terminals -.

• Resistance at 0 : Approx. 6~7k

Is the motor damper covered with frost?

Frosted

Repair the frosted part.

Replace the motor damper (for vegetable com­partment/versa compartment).

Replace the fan grille as well as the motor

damper because they are combined together.

Normal

Yes

No

Yes

Is connector CN5D on
control board connected
properly?

Normal

Adjustment of the set temperature is
possible.

Page 20

Yes

34

only applies to versa compartment. Excessive cooling

Versa compartment/ Ice making compartment
[7]

No cooling; poor cooling

Set the temper­ature to “Low”.

Yes

No

Refer to the section:
“The refrigerator fan
motor does not work”.

Not frosted

The baffles
do not function

CN9S

CN5D

Control board

6

-pin connector

Versa
compartment thermistor

Motor damper
(for versa compartment/
vegetable compartment)

6

-pin connector

Ice making
compartment
thermistor

Motor damper
(for refrigerator compartment/
ice making compartment)

Only the food around
cool-air outlet is exces­sively cooled.

Does cool air come out
of air outlet when open­ing the refrigerator­compartment door and
attaching a magnet bar
on the door switch?

Make the operation of
motor damper (for versa
compartment/vegetable
compartment) visible,
and conduct ice making
test. Check that the baf­fles open and close. (Wait
1 minute for self-check.)
(See “• Self-check and
error display method and
operation, Ice making
test operation” on page

22.)

Connect the connector
properly.

No

Disconnect CN5D and meas­ure the resistance between
and , and between and .
Check that the winding of motor
damper (for versa compartment/
vegetable compartment) has a
resistance of approx. 415 .

0

or

Is 6-pin connector which is in connector cover
on the back of ice making compartment con­nected properly?
(6-pin connector is connected to motor damper.
Refer to the figure below.)

Refrigerator

compartment

Versa
compart­ment

Ice
making
compart­ment

Attach a
magnet bar
here.

1

Defective thermistor

Replace the versa
compartment thermistor.

Check the versa compartment thermistor.
Dip the versa compartment thermistor into the ice water

(0 ) and disconnect 6-pin connector for fan grille at the
back of versa compartment. Measure the resistance
between terminals (white) and (white).

• Resistance at 0 : Approx. 6~7k

Defective thermistor

Check the ice making compartment thermistor.
Dip the ice making compartment thermistor into the ice

water (0 ) and disconnect 6-pin connector of fan grille at
the back of ice making compartment. Measure the resist­ance between terminals (white) and

(white).

• Resistance at 0 : Approx. 6~7k

Is the motor damper covered with frost?

Frosted

Repair the frosted part.

Replace the motor damper (for versa compart­ment/vegetable compartment).

Replace the fan grille as well as the motor

damper because they are combined together.

Normal

Yes

No

Yes

Is connector CN5D on
control board connected
properly?

Keep food away from
air outlet when storing
food.

Is the
temperature
set to “Low”?

Which operation mode is
versa compartment set to?

It is set to “Soft freezing”.

Set the temperature to
“High”.

Set the temperature to “High”.

Which operation mode is versa compartment set to?

Check the set temperature in freezer com­partment. Is the temperature set to “High”?

Is the temperature
set to “High”?

It is set to “Soft freezing”.

It is set to “Freezer”.

Yes

No

No

No

No

Yes

1

Normal

Replace the ice making
compartment thermistor.

Adjustment of the set temperature is
possible.

Page 20

Yes

Components/

Part Name

Check Method and Criterion

Parts Mounted

Position

35

MR-E55R-C MR-E60R-C

5-6 TROUBLE CRITERION OF MAIN PARTS

Compressor

Motor
protector

In the machine
chamber at the
rear side of the
frame

Black Red

White

1

1

2

2

Contact point

Model

MM3-71CCV

100 ± 50 or more

Energize it at 17.0A, 25 for 16 seconds at the longest

.

61±8 or less

Connected
point

Open

Close

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

Normal Abnormal (faulty)

Less than 1

Open circuit (0)

In the machine
chamber at the
rear side of the
frame

Refrigerator
fan motor

In the fan grille
of the freezer
compartment

Model

UDQM002B3
DC brushless

10

150 (Mixed flow fan)

Number of poles
Diameter

Normal

Abnormal

(faulty)

Between and (GND and IC

Power): About 12k

Between and :
open circuit ( )

Between and :
short circuit (

0

)

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

Between and (Power and

IC Power):

1

1

2

3

4

2 3 4 : Pin No.

IC

IC Power
Power
FG
GND

Measure the resistance
with a tester.

Machine
chamber fan
motor

In the machine
chamber at the
rear side of the
frame

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

Normal

Abnormal (faulty)

Between and (GND and

Vcc): About 25k

Between and :
open circuit ( )

Between and (Vs and Vcc):

Between and :
short circuit (0 )

4321 Pin No.

Model 4715JL04WS16G51

Operation method

During compressor operation

Model EFI100E13DHH
Rated input

W

45 (1620 rpm)

Starting current

A

4.0

Running current

A

0.69 (1620 rpm)

(For only 1 minute after startup)

Normal

Abnormal

(faulty)

Winding

(Black-White)

(White-Red)

(Red-Black)

12.4
(20 )

Open ( )

or

short circuit (0 )

Components/

Part Name

Check Method and Criterion

Parts Mounted

Position

36

Red

Yellow

Blue White

Water pump
motor

Under the water
tank holder in
refrigerator com­partment

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

Normal

Abnormal (faulty)

16 (Approx.)

Open ( ) or

short circuit

(0 )

Motor damper
for refrigerator
compartment/
ice making
compartment

In the fan grille
for freezer
compartment
Connector is at
the left-back bot­tom of refrigera­tor compartment.

Measure the winding resistance.

Normal

Abnormal (faulty)

415

(Approx.)

Open ( ) or

short circuit

(0 )

Winding
Blue-White
Red-Yellow

(

)

Red

Yellow

Blue White

Motor damper
for versa com-

partment/veg­etable compart­ment

In the fan grille
for freezer
compartment
Connector is at
the back of versa
compartment.

Measure the winding resistance.

Normal

Abnormal (faulty)

415

(Approx.)

Open ( ) or

short circuit

(0 )

Winding

Blue-White

Red-Yellow

(

)

Components/

Part Name

Check Method and Criterion

Parts Mounted

Position

37

Vegetable
compartment
heater

Water pipe
heater

At the bottom of

the vegetable
compartment
(inside poly­urethane foam)

The connectors

are in the con­nector box on
the ceiling of
the vegetable
compartment

Under the water
tank holder

Normal

Abnormal (faulty)

3.0k

(Approx.) Open circuit ( )

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

Operation method

When ice-making thermistor has reached approx. 10 or
below, the heater is turned on with energizing rate adjust­ed by the set temperature of refrigerator compartment and
freezer compartment.

Normal Abnormal (faulty)

1.7k (Approx.)

Open circuit ( )

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

Operation method

The heater is turned on when vegetable compartment
thermistor has reached a lower temperature than the set
temperature for vegetable compartment.

Defrost heater 1

At the drip tray
under the evap­orator of the
freezer
compartment.

Rated input

150

The heater is energized while defrosting.

(Defrosting is finished when the evaporator is 14±1.5 or more)

W

Operation method

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

Normal Abnormal (faulty)

81

(Approx.)

Open circuit ( )

Water tank
heater

Under the water
tank holder

Normal

Abnormal (faulty)

3.0k

(Approx.) Open circuit ( )

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

Operation method

The heater is turned on with energizing rate adjusted by
the set temperature of refrigerator compartment.

Defrost heater 2

Embedded in
the evaporator
(protected with
the dedicated
aluminum pip­ing)

Rated input

86

The heater is energized while defrosting.

(Defrosting is finished when the evaporator is 14±1.5 or more)

W

Operation method

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

Normal Abnormal (faulty)

141

(Approx.)

Open circuit ( )

Components/

Part Name

Check Method and Criterion

Parts Mounted

Position

38

Rotational heater
board

In partition of
refrigerator com­partment door

Normal Abnormal (faulty)

1.5k (Approx.) Open circuit ( )

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

Operation method

While compressor is operating, the heater is turned on.
When compressor stops, the heater is suspended for the
first 20 minutes and then reactivated.

Ice making
tray heater

Lower part
of ice tray

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

Operation method

During CRYSTAL ICE mode
(The heater is turned on 5 minutes after water supply for

up to 4 hours.)

Normal Abnormal (faulty)

1.0k (Approx.) Open circuit (

)

Thermistor

Measure the resistance with a tester according to the following graph.
(Thermistor resistance values against temperature)

• Resistance measured under the ambient temperature from -50 to +50

1. 200 to 500 k •••••••••••••••••Normal

2. Out of the above range •••••••••Abnormal

Thermistor Check Procedure

• Thermistor resistance value will vary
with the change of temperature.

•

Take the temperature around the ther-

mistor, and then measure thermistor
resistance using a tester.

The relation between resistance and tem­perature is as shown on the left side.

0

0

5

10

15

20

25

30

35

10 20 30-10-20

Thermistor resistance

values against temperature

Outside air thermistor
(In the operation
P.C. board)

Resistance values

Temperature

Inner
thermistor

Refrigerator
compartment

Ice making tray
thermistor

Freezer
compartment

Defrosting
Versa

compartment
Ice making

compartment
Vegetable

compartment

Troubleshooting with self-check

(1) If the self-check indicates the abnor-

mality of thermistor when the power is
turned on, measure the resistance of
the thermistor.

• If there is a short circuit in the ther­mistor, there may be a defect in the
contact of the connector or the ele­ment of the thermistor.

(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.

Defrost
thermistor

Evaporator

Ice making
thermistor,
Versa
compartment
thermistor,
and Freezer
compartment
thermistor

In the fan grille
of each
compartment

Vegetable
compartment

In the back of
partitions
between
Freezing and
Vegetable
compartments

Ice making
tray
thermistor

In the ice
making
compartment

Refrigerator
compartment
thermistor
Back of the

refrigerator
control panel

Outside air
thermistor

In the operation
P.C. board

Components/

Part Name

Check Method and Criterion

Parts Mounted

Position

39

Three-way
valve

In the machine
chamber at the
rear side of the
frame

Normal

Abnormal

54~66

(Gray

[common] A/ A/ B/
B each phase)

Open ( ) or

short circuit (0 )

A 5

A 2

B1COM

3B4

12345
BA

COM

BA

Check the operation by following either (1) or (2) below. When a popping sound is
heard 1 to 25 times, it is considered that the valve is operating normally. The sound
is clearly heard around the back of the product.
(1) Reset the power supply. Check the operation right after this.
(2) Ice making test. Check the operation right after the test is over.

Model NSCE001DC1

Check the operation of three-way valve

LED for bacteria

removal from
water tank

(12V DC)

On the external
surface of the
tank holder

LED lighting
duration

• After water is supplied to the ice tray.

• After the ice level sensor lever detects that ice storage
becomes full.

• While the door is kept open for maximum of 5 minutes.

Abnormal criterion

When the door is opened, LED goes out within 5 minutes.

Make sure if the connector is securely connected.

LED

Note: LED cannot be replaced individually because

it is embedded in the tank holder.

Photosynthesis LED (2 pieces)

LED lighting
duration

Always

Abnormal
criterion

Means

Check with the diode range( ) of tester.
(Use a tester equipped with diode range.)

The pointer of the tester does not shake when measuring
between 2-pin connector No.1 (-) and No.2 (+). Make
sure the pointer of the tester does not shake even if the
polarities are reversed. Resistance: Short-circuited (0Ω)

LEDs light in following
colors at the above timing.
Photosynthesis LED: Orange

Photo­synthesis
LED

21

LED
Use a tester equipped
with a diode range

LEDs
(Vegetable com-

partment)

On the ceiling
vegetable com­partment
(Vegetable
compartment
LED board)

Components/

Part Name

Check Method and Criterion

Parts Mounted

Position

Interior LED
(12V DC)

LED lighting
duration

It lights up while the refrigerator compartment door is open.(If the
door stays open for 60 minutes in a row, the LED automatically goes
off. Once the door is closed, it will light up again next time the door is
opened.)

Abnormal criterion

The LED does not go on at the above timing.

In the refrigerator
compartment:
on the left and
right wall towards
the front of the
compartment
(Interior LED
control board)

Refrigerator
deodorization LED
(12V DC)

LED lighting
duration

1. While the i-see sensor motor is moving

2. During the defrost process, or for about 10 minutes after defrosting
completes

3. For about 90 seconds after the compressor stops

4. While the compartment door (refrigerator, ice making, and/or
freezer compartment) is opened (for 5 minutes at the maximum)

This LED and the versa compartment supercool freezing LED light

up simultaneously.

Abnormal criterion

The light does not go on at the above timing.

In the refrigerator
compartment:
in the control panel
which is towards
the back of the
compartment
(Refrigerator
deodorization LED
control board)

Versa compartment
supercool freezing
LED (12V DC)

LED lighting
duration

1. While the i-see sensor motor is moving

2. During the defrost process, or for about 10 minutes after defrosting
completes

3. For about 90 seconds after the compressor stops

4. While the compartment door (refrigerator, ice making, and/or
freezer compartment) is opened (for 5 minutes at the maximum)

This LED and the refrigerator deodorization LED light up

simultaneously.

Abnormal criterion

The light does not go on at the above timing.

On the ceiling near
front in the versa
compartment
(Mounted on the
i-see sensor motor:
Versa compartment
supercool freezing
LED control board

)

40

Components/

Part Name

Check Method and Criterion

Parts Mounted

Position

i-see sensor
motor (12V DC)

Model NSEV001DA1
Resistance 126

- 154 (common-A/A/B/B each phase)

Abnormal criterion

1) Operation check… Refer to “Operation check of the i-see sensor
motor” below.

2) Resistance check… Open or short

<Operation check of the i-see sensor>
The i-see sensor motor operates by performing (1) or (2) below. Open the versa compartment
door to visually confi rm the operation.

(1) Power reset (Check the operation right after the power is reset.)
(2) Ice making test (Check the operation right after the ice making test.)

Operation of the i-see sensor motor
The operation pattern during the operation checking is different according to which starting
procedure, (1) or (2), was selected.

(1) The operation was started by the power reset

The motor moves from back to front.
The motor moves from front to back, and stops

at the prescribed position.

(2) The operation was started by the ice making test

The motor moves from front to back
The motor moves from back to front.

The motor moves from front to back, and stops

at the prescribed position.

On the

ceiling

near
front in the versa
compartment

Front

Back

Front

Back

41

5
4
3
2
1

A
B

COM

A
B

42

280~340V DC

Compulsory
defrosting by
short circuit
CN7M

15 16 171413121110

9

CN9S

18

87654321

CN10K

34567128

CN4D

1

Rotational heater board

3

Water pipe heater

5

Vegetable compartment heater

7

Defrost heater 2 (for evaporator pipe)

9

Defrost heater 1 (for Glass tube heater)

CN2A

+5V DC
(Inverter circuit)

Compressor

1 U phase

3 V phase

5 W phase

CN50G

1
3
5
7

110V AC
Ice tray heater

Tank heater

CN1A

21

16151413121110

9876543

CN5D

+12~20V DC
(Inverter circuit)

+5V DC
(Refrigerator
control board)

+12V~14V DC
(Refrigerator
control circuit)

13.5 V com

Box fan (Speed control)

Box fan FG signal

GND

GND

13.5 V com

Refrigerator fan motor FG signal

Fan motor (+)

Reception of operation panel data

Transmission of operation panel data

Ice maker (reverse)

Ice maker (rotation)

Water pump (+)

Ice maker position switch

Water pump (-)

GND

I-see sensor motor

HIKARI (optical) air deodrization LED +

Supercool freezing LED

7.4V

Vegetable compartment LED

Door switch input for freezer compartment

Door switch input for refrigerator compartment / ice making compartment

Thermopile (Object)

Thermopile (Thermistor)

Freezer compartment thermistor

Ice making compartment thermistor

Vegetable compartment thermistor

Versa compartment thermistor

Defrost thermistor

Ice making tray thermistor

Refrigerator compartment thermistor

GND

5V com

Damper for vegetable compartment/

versa compartment

Damper for ice making compartment/

refrigerator compartment

Interior LED (left)

Interior LED (right)

LED for bacteria removal from water tank

Power supply

of three-way

valve

1312 141110

987654321

The capacitor that is used for the inverter is charged to 330V DC,
so electric charge remains for a while even after power off.
Therefore, an electric shock may occur if the charging portion is
touched by hand.
Short-circuiting between J91C and J92 for 20 seconds or longer
with a tool such as a flat-blade screwdriver allows the capacitor to
discharge safely. When replacement of the control board follows,
be sure to perform this operation.
After discharge, measure between the C91C terminals + and –
with a tester. Before inspection, be sure to check that the voltage
is 10V DC or lower.

CN61L

21

MR-E55R-C
MR-E60R-C

5-7 TEST POINT DIAGRAM OF FILTER BOARD

110V AC

3

1

CN1

MR-E55R-C
MR-E60R-C

5-8 TEST POINT DIAGRAM OF CONTROL BOARD

43

5-9 TROUBLESHOOTING FOR SUPERCOOL FREEZING OPERATION

Symptom/Problem Possible cause Explanation to the customer/Solution

1

Supercool freezing does not keep foods fresh.
Supercool freezing does not work.

Improper supercool freezing operation

• The amount of drip from meat and/or
fi sh is same as before.

• Meat is dried out.

• Potatoes become fl oury.

• Vegetables lose their crispy texture.

• Bamboo shoots are sinewy.

• Rice is not tasty.

• The versa compartment is not set to the
soft freezing mode.

• Supercool freezing button is not pressed.

• Food was added to the compartment in the
middle of the supercool freezing mode.

• Food is wrapped in aluminum foil or paper.

• A separate item of food is on the top of the
food for supercool freezing and preventing
even supercool freezing.

•

Food that had thawed out once was refro­zen.

• Food is old or expired.

• Hot food and cold food are put in the
compartment at the same time.

• Set the versa compartment to the soft
freezing mode. (Supercool freezing is only
available in the soft freezing mode.)

• Be sure to press the supercool freezing
button.

• Food that was added to the compartment
in the middle of the supercool freezing
mode may not be frozen.

•

The temperature of wrapped food is difficult to

be detected by the supercool freezing sensor.

• Refrozen food and old food may not
besupercool-freezed occasionally.

• As the cooling of hot food takes prece­dence over that of cold food, the cold food
may not be supercooled occasionally.

2

Food does not freeze after one night. Check the settings of the versa compartment.

Yoghurt does not freeze.
Meat and fi sh do not freeze.
Fresh jam does not freeze.

• The versa compartment is not set to the
soft freezing mode.

• The compartment is set to “Low.”

• The compartment doors are opened and
closed frequently.

•

The coagulating temperature of the food is low.

(e.g. processed food, such as soybean paste)

• Set the versa compartment to the soft
freezing mode.

• Set the compartment to “High.”

• Open and close the compartment doors
as infrequently as possible during the
supercool freezing mode. Since this
function freezes the food at a slow speed,
it takes a long time to complete freezing.

• Food with a low coagulating temperature
may not freeze in the soft freezing mode.

3

Food and drink freeze hard. (They are not maintained in the supercooled state.)

Water in a plastic bottle freezes hard.
Drinks freeze hard.

• The user did not check the food and drink
right after the indicator on the
display goes out.

•

Supercool freezing is a function which releases
the object from the supercooling state and freezes
it into the fine particles. When the supercool
freezing indicator goes out, supercooling is over.

•

It is diffi cult to make supercooled water in the

refrigerator. (It does not always work well.)

4

When the food is frozen, the state of food looks same as that frozen in the normal freezer.

Check the settings of the versa compartment.

Icicles form on the surface.
There is some frost.

• The versa compartment is not set to the
soft mode.

• The food is stored for a long time.

• The compartment doors are opened and
closed frequently.

• Set the versa compartment to the soft
freezing mode.

• The longer the food is stored, the more
frost forms.

• Frequent door opening changes tempera­ture inside the refrigerator. That causes
frost formation.

5

Food in the versa compartment melts. Check the settings of the versa compartment.

• The food is in contact with hot food.

• The “supercool freezing” button was
not pressed when hot food is put in the
compartment.

• Food with temperature that is more than
80 is in the compartment.

• The doors are not closed completely.

Supercool freezing is not available in the following operation

For 4 hours after the power is turned on

• Cooling for the whole refrigerator has priority over the supercool freezing mode.

When the temperatures in the other compartments rise to higher than a certain degree

• Cooling for the other compartments has priority over the supercool freezing mode.

When the temperature of the versa compartment is out of the specifi ed temperature range for soft freezing

• Right after switching from other than soft freezing mode
(The instruction manual mentions that supercool freezing should be started about 2 hours after switching to soft freezing.)

5-9.1 FAQ

44

5-9.2 Failure diagnosis

First diagnosis…Diagnosis of air path switching according to food temperature
Do not remove the power plug. (The supercool freezing mode is not available for four hours after the power is
turned on.)

Check the temperature of the versa compartment when the supercool freezing mode is OFF.

(Make sure that the cooling function is working properly according to the settings of soft freezing.)

Press the button. (The control varies depending on the temperatures of the food to be supercooled.)

•

When the food temperature is low (about 25 or less):Turning on supercool freezing starts the supercool freezing control.
5 minutes later make sure the cool air stops coming out from the air outlet on the back of the versa compartment.
Note: Turning on supercool freezing raises the temperature in the versa compartment compared to that measured in
(to prevent freezing from the surface). (Refer to 1 for details.)

•

When the food temperature is high (about 25 or more): Turning on supercool freezing starts the fast cooling control.

5 minutes later make sure the cool air is coming out from the air outlet on the back and ceiling of the versa compartment.

When fast cooling ends, if the food temperature is low enough, the supercool freezing control will start.

If the control performs as it is mentioned above, the airfl ow control is working properly and the supercool freezing

function is normal

Second diagnosis…Diagnosis made with food

Prepare two pouches of ready-meal-style curry. Freeze one in the freezer and supercool-freeze the other in the

versa compartment. Compare the texture of the ingredients, especially potatoes, in the curry.

Put a pouch of ready-meal-style curry in the versa compartment, and press the supercool freezing button.

Put the other pouch of ready-meal-style curry in the freezer.

Let the both pouches stay in there more than overnight.

Warm up and thaw the frozen curry and check the texture of potatoes.

If the potatoes in the supercooled curry maintains higher fi rmness compared to the ones in the frozen curry,

the supercool freezing function has no problem.

Rear air outlet

Twin damper

1: Supercool freezing control

It is normal that the temperature rises after
the supercool freezing is set.

The temperature in the versa compartment is,
at least for 50 minutes, set to approximately 4°C
lower than the temperature before supercool
freezing is set.

45

Temperature control

Compressor

Freezer
thermistor

Model NTC thermistor

Low ( ) −14.3/−16.0 (ON/OFF)

Middle ( ) −18.9/−20.6 (ON/OFF)

High (

) −22.2/−23.8 (ON/OFF)

Motor damper

Refrigerator
thermistor

Model NTC thermistor

Low ( ) 8.4/6.4

(Open/Close)

Middle ( ) 5.1/3.2

(Open/Close)

High ( ) 1.9/0.1

(Open/Close)

Versa
compartment
thermistor

Model NTC thermistor

Soft freezing(Low)

( ) −5.9/−7.1

(Open/Close)

Soft freezing(Middle)

() −9.8/−11.1

(Open/Close)

Soft freezing(High)

() −11.1/−12.3

(Open/Close)

Freezer(Low) ( ) −12.0/−15.1

(Open/Close)

Freezer(Middle) ( ) −16.1/−19.4

(Open/Close)

Freezer(High) ( ) −17.7/−21.2

(Open/Close)

Ice making
thermistor

Model NTC thermistor

Ice making (

) −21.6/−23.4

(Open/Close)

Ice making stop ( ) −21.6/−23.4

(Open/Close)

Crystal ice making

( ) −21.6/−23.4

(Open/Close)

Vegetable
compartment
thermistor

Model NTC thermistor

Low ( ) 10.7/8.7

(Open/Close)

Middle ( ) 9.0/7.0

(Open/Close)

High ( ) 7.0/5.1

(Open/Close)

Heater

Vegetable
compartment
thermistor

Model NTC thermistor

Low (

) 7.7/6.4 (OFF/ON)

Middle ( ) 6.1/4.8 (OFF/ON)

High ( ) 4.2/2.9 (OFF/ON)

1. Diagnostic procedure <Outline>

• In the “Thermistor check mode”, check the following: Response and Detected temperature.

• Set the versa compartment to “soft freezing” and check and .
Response check: Make sure that the detected temperature changes by placing your hand under the sensor.

Detected temperature check: Put the vinyl tape on the aperture of the thermopile, and check the detected temperature.

Accuracy of the temperature detected by the thermopile

• Since there is considerable individual variation in the temperature detected by the thermopile, the tolerance of the absolute temperature is

relatively large.

• It is controlled by the relative temperature so that the thermopile’s individual variation does not affect the refrigerator.

If no problem is found by the check , it is generally regarded as normal.

If the check results in normal, it can be regarded as normal even if the detected temperature, found by the check , is slightly out of

the normal range.

2. Diagnosis

1) Procedure for Response check
(1) Procedure
Step 1: Start the “Thermistor check” mode.
Step 2: Confirm that the detected temperature changes by placing your hand under the thermopile.
(2) Failure diagnosis

• If the temperature does not rise 2 to 3 or more when your hand is introduced, the thermopile is broken.

(However, if the inside of refrigerator is not cool enough, the temperature change cannot be observed.)

2) Procedure for Detected temperature check
(1) Procedure
Step 1: Open the versa compartment. Put the vinyl tape to cover the aperture of i-see Sensor monitor.
Step 2: Wait for about five minutes until the temperature of the versa compartment becomes stable.
Step 3: Start the “Thermistor temperature check mode”.
Step 4: Check the temperature of the versa compartment thermistor and the thermopile temperature.
(2) Failure diagnosis

• If the temperature detected by the thermopile is roughly in the range of −2 to + 5 against the temperature of the versa com­ partment thermistor, which is listed in the temperature control chart ("ELECTRICAL SPECIFICATIONS" of "2. SPECIFICATIONS"),
it is normal.
(The temperature of the thermopile tends to be 3 to 5 higher than the temperature detected by the versa compartment thermistor.)

<Reference> E55R Temperature control chart

−1/−9

−5/−13

−6/−14

Thermopile detected temperature
It is normal if the detected temperature
is in the range of −2 to +5 against the
temperature of the versa compartment
thermistor.

Put the vinyl tape onthe aperture.

5-9.3 Failure diagnosis for the thermopile (HIKARI i-see Sensor)

46

1.1 ± 0.2

9.5

max.

8.2 ± 0.3

4.2 ± 0.2

0.1 max. gap

14 ± 0.3

6.5 ± 0.2

11.3

4.8

12.5 ± 0.3

8.15

4.2 ± 0.3

0.1 max. gap

9.15

2.5 max.

3. Outline and detected temperature of the thermopile

• 2 kinds of temperature information (voltage) are output from the thermopile.
Vtamb: Temperature information about the thermopile itself ( ambient temperature)
Vtobj: Temperature information about the object to be detected by the thermopile (infrared ray)
Each output changes between 0 V ~ 5 V.

Temperature information (voltage) about the object to be detected by the thermopile varies depending on the temperature of the thermopile itself.
Even if the temperature of the object stays constant, the values of temperature information about the object (Vtobj) will be various if the
temperature of the thermopile itself varies.

• The following chart shows rough standards of the output voltage of thermopile

Temperature Information about the object according to the ambient temperature (Vtobj: unit: V)

Each voltage value is a representative value as a guide.
Values of Vtobj in the following chart are output when the object is placed under the entire field of view of the thermopile.

Temperature of

the object(

)

−20 −100 102030

Ambient temperature

()

1.077 1.298 1.565 1.879 2.24 2.647 Vtamb(V)

−20 2.225 1.66 1.02 0.302 - -

−15 2.498 1.933 1.294 0.575 - -

−10 2.79 2.225 1.585 0.867 0.066 -

−5 3.1 2.535 1.896 1.177 0.376 -

0 3.43 2.865 2.225 1.507 0.706 -

5 3.779 3.214 2.574 1.856 1.055 0.168 Vtobj(V)
10 4.148 3.583 2.943 2.225 1.424 0.537
15 4.538 3.973 3.333 2.615 1.814 0.927
20 4.949 4.384 3.744 3.026 2.225 1.338
25 - 4.817 4.177 3.458 2.657 1.771
30 - - 4.631 3.913 3.112 2.225

E.g.) The object at about 5 is measured at the ambient temperature of –10 .
Vtamb: approx. 1.298V, Vtobj: approx. 3.214V

5.5
5

4.5
4

3.5
3

2.5
2

1.5
1

0.5
0

-30 -20 -10 0 10 20 30 40 50 60

VTobj/V

Temperature of the object

VTamb:1.08V
VTamb:1.57V
VTamb:2.65V

VTamb:1.30V
VTamb:1.88V

5-9.3 Failure diagnosis for the thermopile (HIKARI i-see Sensor)

47

HIKARI i-see sensor
(Infrared sensor, blue LED)

Turns off if the LED
stay lit for 5 minutes

Lid of slide chilled case

Slide chilled case

BLUE LED

Food is cooled quickly
due to pre-coold tray

Senses positions and temperatures of foods.

Irradiate light-type bacteria removing
filter to prevent the bacteria from being
bred in the water tank.

Cannot be removed

2L PET bottles
can also be stored

LEDs (ceiling area)

Refrigerator compartment

Operation panel

Change pocket (small)

Change pocket (large)

Interior LED

Do not close the door
with the rotating partition
turned up.

Small item case

Bottle pocket (small)

Rotating
partition

Water tank

Free egg shelf

Automatic ice maker
(Ice making compartment)

Freezer compartment

Freezing case
(top)

Adjustable
partition

Freezing case (bottom)

For freezing only
Freezable 500 ml PET bottles
can be placed in upright.

Bottle pocket (large)

AUTO-shelf

Two-way

flexishelf

Slide case

Vegetable
case

Aluminum tray

Water tank (app. 1.2L)

Water supply port cap

Water supply
pipe

Water tank lid

Pipe

Water supply pump,
Light-type bacteria
removing filter

Ice storage box

Ice server

Ice tray

V-LED lamp

Soundproof mat

Reduces the
sound of ice
dropping into
the storage bin.
Do not discard it.

Versa compartment is set to soft freezing
mode at factory shipping.

Versa compartment

Versa compartment is applicable to freezer and
soft freezing,

Vegetable compartment

ROOM button

SELECT/QUICK button

ICE SELECT button

Supercool freezing button

NAMES OF THE PARTS6

MR-E55R-C
MR-E60R-C

OPERATING PROCEDURE

PHOTOS

48

DISASSEMBLY INSTRUCTIONS

7

Plug out before work!!
Check the automatic ice-maker pressing ice making stop switch.
When assembling & disassembling parts seven kinds of screws and rivets are used. Do not mistake to use them.

MR-E55R-C
MR-E60R-C

Rivet

4 12

Stainless steel

4 12 (Black)

With metal washer

4 16 (White)

With plastic washer

Specified screw

Rivet

Photo 1

Photo 2

Photo 3

1. Parts inside the refrigerator compartment: AUTO­shelf

(1) Remove two-way flexishelf from the refrigerator compartment.

Move the lever to the right, and slide the AUTO-shelf to the

uppermost position. (See photo 1)

Push the catches (4 places) inward, and remove the AUTO-

shelf from the metal stoppers. Lift up and remove the AUTO­shelf toward you. (See photo 2)

Remove the metal stoppers in front, back, left, and right sides

of the unit.

First, install the metal stoppers to the unit. Then, place the

AUTO-shelf on top, and push the AUTO-shelf downward until it
clicks into place (4 places). Refer to photos 3, 4 for the direc­tion of the metal stopper installation.

Metal stopper

Photo 4

AUTO-shelf

Metal
stopper

Levers

AUTO-shelf

Ceiling of slide chilled
compartment

Two-way

flexshelf

Catch

Metal
stopper

Catches

Catches

Catches

Catches

AUTO-shelf

Caution on assembly

OPERATING PROCEDURE

PHOTOS

49

Ceiling of slide
chilled compartment

Slide chilled case lid

Slide chilled case

Vertical partition

Small item case
(with free egg
shelf (S))

2. Parts inside the refrigerator compartment: Vertical
partition

Right rail of the slide compartment Left

rail of the slide compartment Interior LED (right
and left) Cover (Control panel) Control panel,
Duct R Deodorizing unit and thermistor attachment

(1) Remove the AUTO-shelf and two-way flexishelf from the refrig-

erator compartment.

Remove the small item case and the slide chilled case.
Pull out the ceiling by unhooking the front catches on both

sides.

Remove the slide chilled case lid.
Remove the vertical partition.

Photo 5

Removing the AUTO-shelf from the AUTO-shelf frame.

Remove the catches in the back (3 places), and lift up the

AUTO-shelf as shown in photo 6. (See photos 5, 6)

The catches in front (4 places) will detach. Pull the AUTO-shelf

toward you to remove.

Photo 6

AUTO-shelf

AUTO-shelf frame

AUTO-shelf

AUTO-shelf frame

Catch

Catch

Catch

(2) Slide the right rail out toward you. (See photo 7)

(3) Remove the screw at the left rail of the slide compartment,

and slide the left rail toward you. (See photo 8)

Photo 7

Photo 8

Control panel

Right rail of the
slide compartment

Left rail of the slide
compartment

Control panel

Screw

Vertical partition

Right rail of the slide compartment

Left rail of the slide compartment

OPERATING PROCEDURE

PHOTOS

50

(5) Remove rivet , and pull out the mirror hinge on the lower left

of the control panel to remove the connector. (See photo 10)

(6) Remove rivet (2 rivets) in the upper left and right side, screw

(1 screw) on the lower left side.

Detach catches (5 places). (See photo 10)

Photo 10

Photo 11

(The assembly consists of the following: control panel, and duct R).

To prevent poor contact of connectors, connect them properly.

Fix the control panel by inserting the lower catches (2 places)

into the bottom of refrigerator compartment.

(7) Remove screws (3 screws), the catch (1 place), and the

connector. (See photo 11)

(4) Remove the catches while pushing the catches at sides of

the control panel, and remove the tabs in order of bottom,
top. (See photo 10)

Catch

Catch

Rivet

Rivet

Mirror hinge

Rivet

Control panel

Screw

Catches

Catch

Deodorizing unit &
thermistor attachment

Screws

Catches

Catch

Catch

Catch

Cover (

Control panel

)

Remove the screw on the right or left LED. (See photo 9)
Slide upward the right or left interior LED while pushing up the

bottom, and pull toward you to remove.

Note:

If the interior LED is too stiff to slide upward and to remove by

hand, place a piece of board at the bottom of the LED, and
gradually tap the board in the sliding direction shown to remove
the LED.

Photo 9

Interior LED (Left)

Sliding direction

Screw

Control panel Duct R

Control panel assembly

Caution on assembly

Deodorizing unit & thermistor attachment

Cover (Control panel)

Interior LED (right and left)
Removing

OPERATING PROCEDURE

PHOTOS

51

3. Parts inside the versa compartment : I-see sensor
Versa compartment ceiling with deodorizing filter

(1) Remove the parts in the versa compartment.
(2) Slide the two-way flexishelf toward you.

(3) Remove the screw (1 screw) and the connector.
(See photo 12, 13)

(4) Remove rivets (2 rivets) and pull down the ceiling.
(See photo 14, 15)

Push the parts firmly into place with no clearance around the

parts.

Photo 12

Photo 13

Screw

I-see sensor

I-see sensor

Connector

Versa compartment
Supercool freezing LED

Photo 14

Photo 15

Versa
compartment
ceiling

Rivet

Rivet

Deodorizing filter

I-see sensor

Versa
compartment
ceiling

I-see sensor

Versa compartment ceiling with deodorizing filter

Caution on installation

OPERATING PROCEDURE

PHOTOS

52

Photo 17

Photo 18

Photo 19

4.

Parts inside the ice making compartment, versa compart­ment, vegetable compartment, and freezer compartment :

Partition I

Partition S Partition I/S cover Partition I/

S Cover (IM) Automatic ice maker assembly Cover
(upper) Fan grille Evaporator Defrost heater, Drip
tray, DEF thermistor Vegetable compartment ceiling

Connector cover V Vegetable compartment LED

Vegetable compartment thermistor

(1)

Remove interior parts out of ice making compartment, versa
compartment, vegetable compartment, and freezer compartment.

(2) To detach them, pull out the doors of ice making compartment,

versa compartment, vegetable compartment, and freezer com­partment.

(3) Lift the partition I to remove.

(4) Remove the catches (4 places) with a flat-blade screwdriver.

(See photo 16)

(5) Remove screw

(2 screws) at the front of the refrigerator and
4 rollers. Remove the catches at the both sides of partition
I/S cover. (Remove them with a driver or another tool which
is wrapped in cloth in order to protect the cover surface from
scratches.) (See photo 17)

(6) Remove the catches on the upper and lower right of the parti-

tion I/S (see photo 18), and then slide the partition I/S toward
right while being careful not to deform or damage the pipe.

(See photo 19)

Deforming or damaging the partition I/S causes refrigerant leak-

age or failure of cooling.

Do not deform or damage the pipe. (See photo 18)

Deforming or damaging the pipe causes refrigerant leakage or

failure of cooling.

Install the partition I/S so that the arrow points up.

(See photo 17)

Screws

Partition I/S cover

Rollers

Move to right

Catch

Catch

A

r
r
o

w

Rollers

Partition I/S

Pipe

Catch

Partition I/S

Screw

Catches

Parttition S

Photo 16

Partition I/ S cover

Caution on assembly

Partition I/ S

Partition I

Partition S

OPERATING PROCEDURE

PHOTOS

53

Photo 21

Photo 22

Fan grille

(Fan grille consists of the following: motor

dampers (for ice making compartment/refrig­erator compartment, versa compartment/veg­etable compartment), refrigerator fan motor,
fan, thermal fuse, and 3 thermistors).

Photo 20

Tank holder

Pipe

Catches
(Automatic
Ice maker
assembly)

Cover (IM)

Automatic
Ice maker
assembly

Catches

(7) Remove catches (3 places) in order to detach the cover. (See

photo 20)

(8) Remove pressing catches (2 places) upward, and pull auto-

matic ice maker assembly to the right side. (See photo 20)

(9) Remove rivet

(1 rivet) to remove the cover from the fan

grille. (See photo 21)

(

10

) To remove the fan grille, remove the screws (4 screws) on

the right, left, bottom, the lower catches (3 places), and the
connectors (4 connectors) in the connector area (See photo

21) on the upper left. (See photo 22)

After removing the fan grille, attach the lead wire on the side

of the refrigerator with a tape to protect it from getting wet with
evaporator condensation.

Fan grille consists of the following: motor dampers (for ice-

making compartment/ refrigerator compartment, versa com­partment/vegetable compartment), refrigerator fan motor, fan,
thermal fuse, and 3 thermistors. (See photo 22)

Fan grille

Catches

Rivet

Cover (upper)

Screws

Fan grille

Screws

Connector area

Cover (IM)

Automatic ice maker assembly

Cover (upper)

Fan grille

Note

OPERATING PROCEDURE

PHOTOS

54

(11)
Remove the 4-pin connector that is stowed in the contoured

section of main refrigerator housing.

Detach the brazed section of piping. Remove the catch pro-

truding from the contoured section of main refrigerator hous­ing to remove the evaporator. (See photo 23, figure 1, 2)

Installation:
Attach the evaporator to the catch protruding from the main

refrigerator housing. (See figure 1, 2)

Check both the entry side (black tube) and the exit side (gray

tube) of the evaporator. Braze the entry side to the pipe with
black marking, leading from the main refrigerator housing;
and the exit side to the other pipe.

Figure 2

Connect the connector leading from the evaporator to the con-

nector on the contouring section of main refrigerator housing.
Stow the lead wires in the contouring section and cover it with
seal tape.

Evaporator
outlet pipe
Gray tube

Unit outlet pipe
No marking

Exit side

Evaporator
inlet pipe
Black tube

Unit inlet pipe
With marking

Entry side

30

Evaporator

Defrost heater 1

DEF thermistor

Defrost
heater 2

Brazed section

Catch to fix the evaporator

Catch to fix the defrost heater

Pull the evaporator up in the direction of arrow
A to detach it from the catch.Slide the defrost
heater out in the direction of arrow B.

Catch to
fix the
evaporator

Catch to fix the defrost heater

Evaporator

Heater roof

Evaporator

Figure 1

Figure 2

Photo 23

The refrigerant flows in the muffler from top to bot­tom. The pipe from the evaporator exit leads to the
top of the muffler. The pipe from the muffler (gray
tube) leads to the no-marking unit outlet pipe.

Evaporator

OPERATING PROCEDURE

PHOTOS

55

Lead wire

Defrost heater 1

Tab

Lead wire

Defrost heater 1

Seal tape

Defrost heater 1

Defrost heater
connector

Bullet terminal

Tab

Seal tape

Defrost heater 1

Heater roof

Remove the defrost heater from the clips on the both ends
of the heater roof.
The arrow C indicates the front side of the refrigerator.

Drip tray

Aluminum tape (4 sides)

Defrost heater 2

Defrost heater 2

Put 4 pieces of seal tape on the
positions indicated in the picture
above.

Defrost heater
connector

Defrost heater 2

Stow the bullet terminal (right) and defrost
heater connector (left) in the contouring
section. Cover it with seal tape.

Figure 3

Figure 4

Photo 24

Photo 25

Photo 26

Photo 27

(

12

) Detach the defrost heater from the catch on the main refrig-

erator housing. Slide the defrost heater out towards you.
Remove the defrost heater from the heater roof. (See figure 3)
Remove the aluminum tape, then the drip tray. (See figure 4)

Installation:

Attach the drip tray so that it closely fits into the right place of

the main refrigerator housing. (See figure 4)

Loosen the lead wires to prevent water from entering the

glass tube. Make sure the orientation of the defrost heater is
correct. (See figure 3)

Attach the defrost heater to the catch. Use the respective tabs

to secure the 2 lead wires on the left and right side of main
refrigerator housing. (See photo 24, 25)

Fix the lead wires to the main refrigerator housing with seal

tape. (See photo 26)

Firmly connect the bullet terminal (right) with the defrost

heater connector (left). Stow the lead wires in the contouring
section of main refrigerator housing. Cover that section with
seal tape. (Use the seal tape provided with the evaporator.)

(See photo 27)

Defrost heater Drip tray

OPERATING PROCEDURE

PHOTOS

56

Cut the nylon fastener.

Replacement defrost thermistor

Connect the housing.

Muffler

Nylon fastener (large)

Nylon fastener (small)

Replacement defrost thermistor

As the picture shows, attach the thermistor to
the muffler on the side which does not face
the evaporator.

Photo 28

Photo 29

Photo 30

Photo 31

Photo 32

(13)

Cut the nylon fastener and detach the defrost thermistor from

the evaporator. (See photo 28)

The defrost thermistor and the evaporator pipe heater are

connected to the 4-pin connector. Cut the lead wires of the
defrost thermistor at the base of the 4-pin connector.

(See photo 29)
Installation:

Connect the replacement defrost thermistor to the evaporator

connector. (See photo 30)

Secure the defrost thermistor to the muffler with 3 nylon

fasteners (large) provided with the replacement defrost ther­mistor. Then, tie the lead wires of defrost thermistor and the
evaporator pipe heater together with a nylon fastener (small).
(See photo 31, 32) (If they are attached to an incorrect posi­tion, thermal characteristics will be altered.)

Stow the evaporator defrost thermistor connector in the con-

touring section of main refrigerator housing. Cover the con­touring section with seal tape. (Use the seal tape provided
with evaporator.) (See photo 27)

Defrost thermistor

OPERATING PROCEDURE

PHOTOS

57

(14) Remove the rivets (3 rivets) to pull the ceiling toward you. (See

photo 33)

(15) Remove the rivet (1 rivet). (See photo 34)

(16) Remove the screw (1 screw) (See photo 35)

(17) Remove the screw (1 screw) and the catch (1 place). (See

photo 36)

Photo 33

Rivet

Rivet

Vegetable compart­ment ceiling

Rivet Connector cover V

Rivet

Photo 34

Vegetable compartment ceiling

Screw

Vegetable compart­ment thermistor

Catch

Screw

Vegetable com­partment LED

Vegetable compartment ceiling

Photo 35

Photo 36

Vegetable compartment ceiling

Connector cover V

Vegetable compartment LED

Vegetable compartment thermistor

PHOTOSOPERATING PROCEDURE

58

5. Parts inside the refrigerator compartment Left rail
of the slide compartment Parts inside the ice mak­ing compartment Ice making compartment door
Tank holder Door switch

(1) Remove the parts inside the refrigerator compartment.
(See procedure [1])
(2) Remove the left rail of the slide compartment.
(See procedure [2])
(3) Remove the parts inside the ice making compartment.
(4) Remove the ice making compartment door.

Tank holder

(5) Remove a screw on the side of the refrigerator compartment.
(6) Loosen screw (3 screws) halfway on the side of the ice

making compartment. Put a screwdriver on the head of each
screw and tap the bottom side of the holder softly to detach it.
(See photo 37)

(7) Lift up the tank holder from the refrigerator compartment to

remove it.

Note:

Put the lead wires in place so that they do not get caught in

water supply hole.

Put the tank holder in place so that the water does not leak

from it.

Door switch

(8) Insert a flat-blade screwdriver between the switch and the body

to remove the door switch.

Photo 37

Figure 5

Tank holder

Door switch

Screw

Tank holder

6. Operation panel

How to remove

(1) Slide the operation panel in the direction of the arrows, until it

stops. (See photo 38)
(2) Pull out the operation panel as shown in photo 39.
(See photo 39)

Note:

Please pull it out carefully because it is still wired to the body.
(3) Take out the panel by detaching the connector of lead wires

from the body.

Note:

If the horizontal slide is hard to remove with hands, put plate

on the right edge of the panel (please put protective object

such as tapes on the area of contact on the door panel and the

operation panel), and gently tap it in the sliding direction.

Pipe

Photo 38

Photo 39

Operational panel

Sliding direction

PHOTOSOPERATING PROCEDURE

59

8. Leg cover

Remove the leg cover by sliding back and forward.

After adjusting the casters, install the leg cover by sliding back

and forward.

Before installing the leg cover, be sure to adjust the casters.

7. Rotational heater board

(1) Remove 4 fixing screws to remove the rotational heater board.

(See photo 40)

(2) Remove a screw on the wiring cover and disconnect the con-

nector in the cover. (See photo 40)

Caution on assembly

When raising the rotational heater board, replace the rotational

heater board as it was. If the refrigerator door is closed with
the board raised, the rotational heater board may hit against
the left door of refrigerator and be damaged.

Though the anti-condensation heater may make rotational

heater board hot, it does not affect food inside.

Refer to the right figure when installing the rotational heater

board. (See figure 6)

Loosen the fixing screw and adjust a vertical (upper and

lower) motion.

After assembling, make sure that the rotational heater board

fits the guide properly and works properly.

Figure 6

Guide

(4)mm

3 2mm

(715)

Rotational heater
board

Left door of
refrigerator
compartment

Photo 40

Photo 41

Screws

Rotational
heater board

Wiring cover

Screws

Screw
(Wiring cover)

Leg cover

Catch

Catch

Casters

Removing

Installing

PHOTOSOPERATING PROCEDURE

60

Photo 42

Photo 43

Photo 44

Photo 45

9.

Compressor cover Elect cover Control board
Drain pan Reactor Box fan

(1) Remove 8 screws for compressor cover at the back of the

refrigerator. (See photo 42)

(2)

Remove the fixing screws (3 screws) and the rivet (1 rivet) on

the elect cover on the back of the refrigerator. (See photo 43)

(3) Remove the control board by removing the connector and the

fixing screws of the lead wires.

To prevent pinching of the lead wires and poor insertion of the

connector, be sure to install the lead wires and connectors in

the appropriate positions.

(4) Remove screw (1 screw). (See photo 44)

Wash the drain pan with water in case it is dirty.

(5) Remove the drain pan while bending upward the wiring inside

the drain pan.

Note:

Avoid bending or crushing the piping.

(6) Remove the screws (2 screws). (See photo 45)
(7) Remove the reactor by removing the holders (2 positions) and

the connector. (See photo 46)

(8) Remove the connector.
(9) Pull out the box fan by removing the fixing screw (1 screw) (See

photo 44) and the connector.

Compressor
cover

Screws

Box fan

Drain pan

Screw
(Drain pan)

Screw (Box fan)

Screws

Screw

Screw

Rivet

Compressor

Reactor

Reactor

Screws

Holder

Holder

Photo 46

Elect cover

Connector

Compressor cover

Drain pan

Caution

Box fan

Elect cover

Control board

Caution on installation

Reactor

OPERATING PROCEDURE

61

E50: PEFI100E

From back to left side

From left side to back

W

From dryer to cabinet pipe

From cabinet pipe to right side

From right side to back

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

W

Charge pipe
(High pressure side)

: This mark shows welded point.

Three-way
valve

Compressor

Charge pipe
(Low pressure side)

Box fan

Reactor

Adjust piping and secure clearance of about 10 to 15 mm around pipes.
Make sure clearance is secured especially between the following parts.
Between charge pipe and compressor cover, bottom pan, compressor,
or discharge pipe.
Between suction pipe and compressor cover or capillary tube.
Between capillary tube and three-way valve or lead wires.

Attach U washer as shown in the figure below.

Piping connection of three-way valve

Inlet

Outlet

Dryer

Dryer holder

Figure 7

Door adjustment

If the adjustment bolt is not in contact with the floor, lower the bolt, and adjust it so that the caster is slightly above the floor.
When the refrigerator is installed in the corner of the room, the bolt of the refrigerator may sink into the floor and cause the refrig-

erator to tilt. It is recommended to make adjustments by objects like boards beforehand.

When the refrigerator bolt sinks into the floor, and it can be confirmed visually, prevent sinking by using objects like boards.

<Adjusting refrigerator compartment doors>

• Common elements
First, check the installation condition.

Note: The refrigerator weighs about 100 kg, and is held by 4 bolts. How far each bolt sinks into the floor depends on
factors such as floor pillars. Change in balance due to position of stored food (such as large or small amount of food
stored in the door pockets) may also affect sinking.

ProblemSolution

Adjusting doors horizontally

B

A

A

B

A

B

Adjusting vertical space between doors

Too much space Not enough space

A > B (More space in outer side)
Or

A < B (More space in inner side)

A > B (Too much space between the
ice making compartment and versa
compartment doors.)
Misaligned versa compartment door
Misaligned ice making compartment
doors

A < B (Small space between the ice
making compartment and versa com­partment doors.)
Misaligned versa compartment door
Misaligned ice making compartment
door

Place spacer set under the
outer roller of the tilted door
(ice making compartment door
in the above illustration) to
adjust position.

Place spacer set under the
inner roller of the tilted door
(ice making compartment door
in the above illustration) to
adjust position.

Replace roller set of the right

and left versa compartment doors.

a To adjust about 0.5 mm replace
with roller set C.
b To make large adjustment replace
with roller set D.

Replace lower roller set of the ice

making compartment door.

c To adjust about 0.5 mm replace
with roller set A.
d To make large adjustment replace
with roller set B.

Replace roller set of the right
and left versa compartment doors.
a To adjust about 0.5 mm replace
with roller set A.
b To make large adjustment replace
with roller set B.

Replace lower roller set of the ice

making compartment door.

c To adjust about 0.5 mm replace
with roller set C.
d To make large adjustment replace
with roller set D.

<Adjusting ice making compartment and versa compartment doors>

Right 0.5 [09]
Right 1.0 [11]
Left 0.5 [13]
Left 1.0 [15]

Marking

LH RH

Identifying roller sets (Marking)

Right 0.5 [10]
Right 1.0 [12]
Left 0.5 [14]
Left 1.0 [16]

Marking

LH RH
Roller set A (0.5 mm to the right)
Roller set B (1.0 mm to the right)
Roller set C (0.5 mm to the right)
Roller set D (1.0 mm to the right)

09
11
13
15

10
12
14
16

Check points after adjustment

When adjustments such as hinge position have been made without food in the door pockets, confirm the door position again with food stored inside.
When the refrigerator is moved to make adjustments in the back bolts, floor may be damaged due to objects trapped in the caster. It is recom­mended to take preventive measures such as cleaning around the refrigerator and covering the floor with boards before moving the refrigerator.

After adjusting the refrigerator compartment doors, confirm auto closer operation.

HEAD OFFICE: TOKYO BLDG., 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN

Copyright 2010 MITSUBISHI ELECTRIC ENGINEERING CO., LTD.
Distributed in Dec. 2010 No. OAH110 7
Made in Japan

New publication, effective Dec. 2010
Specifications subject to change without notice