Mitsubishi Electronics MR-G50J-SS-NZ manual Components Part Name, Troubleshooting with self-check

Components/

Part Name

Thermistor

Resistance values

Three-way valve

Check Method and Criterion

Parts Mounted

Position

Measure the resistance with a tester according to the following graph.

Defrost

(Thermistor resistance values against temperature)

thermistor

Evaporator

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

Ice making

1. 200' to 500k' ·····················Normal

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

thermistor,

Refrigerator

Thermistor Check Procedure

Versa

compartment

compartment

•Thermistor resistance value will

vary

Slide chilled

thermistor,

with the change of temperature.

compartment

Thermistor resistance

Vegetable

Ice making tray

•Take the temperature around the

(k')

compartment

thermistor

values against temperature

thermistor, and then measure thermistor

35

Freezer

thermistor

compartment

resistance using a tester.

and Freezer

Defrosting

Outside air thermistor

The relation between resistance

and

compartment

30

Versa

(In the operation

temperature is as shown on the left side.

P.C. board)

thermistor

compartment

25

Ice making

In the fan grille

compartment

of each

Vegetable

compartments.

20

compartment

Troubleshooting with self-check

Inner

Ice making

15

thermistor

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

tray

mality of thermistor when the power is

thermistor

10

turned on, measure the resistance of the

In the ice

thermistor.

making

•If there is a short circuit in the thermis-

5

compartment.

tor, there may be a defect in the contact

0

of the connector or the element of the

Outside air

-20

-10

0

10

20

30 (;)

thermistor.

thermistor

Temperature

(2)When the self-check indicates the

In the operation

abnormality of thermistor a few seconds

P.C. board.

after the power is turned on, check the

contact of the connector.

A 5

In the machine

Model

NSCE001DC1

chamber at the

A 2

rear side of the

frame.

Normal

Abnormal

1

3

4

B

COM B

54~56' (Gray

Open (∞ ' ) or

[common]

short circuit

A/ A/ B/

B each phase)

(0' )

1

2

3

4

5

B

A

COM

B

A

Check the operation of three-way valve

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.

30