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Control board – MITSUBISHI ELECTRIC Mitsubishi Home Refrigerator MR-G50J-SS-NZ User Manual

Page 25

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25

only applies to versa compartment.

Excessive cooling

V

ersa compartment/ Ice making compartment

[7]

No cooling; poor cooling

Set the temper-
ature to “Low”.

Yes

No

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

Not frosted

The baffles
do not function

Control board

CN7S

CN9D

8-pin connector

4-pin connector

6-pin connector

Versa

compartment

thermistor

Ice making

compartment

thermistor

M

Motor damper

(for ice making

compartment/

versa compartment)

3

2
4

1

4

7

5

4

7

5

3

2
4

1

9
8

9
8

6

5

4

3

2

1

6

5

4

3

2

1

1
3

1
3

Only the food around
cool-air outlet is exces-
sively cooled.

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

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

1

Ice making

test operation” on page
14.)

Connect the connector
properly.

No

Disconnect CN9D and measure
the resistance between

1

and

2

, and between

3

and

4

.

Check that the winding of motor
damper (for ice making compart-
ment/ versa compartment) has a
resistance of approx. 415

"

0

"

or

"

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

Refrigerator

compartment

Versa
compart-
ment

Ice

making

compart-

ment

Attach a
magnet bar
here.

w

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 terminal

3

(white) and

6

(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 terminal

1

(white) and

4

(white).

Resistance at 0

:

: Approx. 6~7k

"

Is the motor damper covered with frost?

Frosted

Repair the frosted part.

Replace the motor damper (for ice making com-
partment/ versa compartment)

ww

Replace the fan grille as well as the motor

damper because they are combined together.

Normal

Yes

No

Yes

Is connector CN9D on
control board connected
properly?

It is set to
“Vegetable •
Refrigerator” or
“Chilled”.

Keep food away from
air outlet in 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 com-
partment. Is the temperature set to “High”?

Is the tempera-
ture set to “High”.

It is set to “Soft freezing”.

It is set to “Freezer”.

It is set to ,
“Vegetable •
Refrigerator” or
“Chilled”.

Yes

No

No

No

Yes

No

Yes

w

1

Normal

Replace the ice making

compartment thermistor.

OA090-1.qxp 06.7.20 9:55 AM Page 25