Mitsubishi Electronics MR-G50J-SS-NZ manual Excessive cooling Poor cooling, CN7S

Page 24

[6] Vegetable compartment

 

 

 

 

 

 

 

Excessive cooling

 

 

 

 

poor cooling

 

Is the temperature of

No

Set the temperature to

 

 

 

Is the temperature of

No

Set the temperature to

 

vegetable compartment

 

 

 

vegetable compartment

 

 

“Low”.

 

 

 

 

“High”.

 

 

 

 

 

 

 

set to “Low”?

 

 

 

 

set to “High”?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Yes (Go to 1or 2)

 

 

 

 

 

 

 

 

Yes

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Are the temperatures of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

Check the thermistor, vegetable compartment

 

 

 

 

 

 

Yes

Set the temperatures to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

refrigerator compart-

 

 

 

 

 

 

 

 

 

 

 

heater, and control board.

No

 

 

 

 

“Middle” or “High”.

 

 

 

 

 

 

 

 

 

(Go to 1

 

 

2)

ment/ freezer compart-

 

 

 

 

 

 

 

 

 

 

 

or

 

 

 

Is one of these error codes indicated when conduct-

 

 

 

 

ment set to “Low”?

 

 

 

 

 

 

 

 

ing self-check of operation P.C. board?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refrigerator compartment thermistor: e13

 

 

 

 

 

 

e18

is indicated.

 

 

 

Slide chilled compartment thermistor: e14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Vegetable compartment thermistor: e16

 

 

 

 

 

 

 

 

 

 

 

Yes

Outside air thermistor: e18

 

 

 

 

 

 

 

 

 

 

Is there a short or open cir-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No error code is

 

 

 

e13, e14 or e16 is indicated.

 

 

 

 

 

 

 

 

 

indicated.

 

 

 

 

cuit in each thermistor and is

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Does vegetable compart-

 

 

 

 

 

 

 

 

 

 

the resistance 0" or ∞ "?

No

 

 

 

 

 

 

 

 

 

 

ment have a resistance of

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

approx. 2.9k" between wire-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

connected terminal 5(CN2A)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

and 7 (CN3A) on control

0"

 

 

 

 

 

 

 

 

0"

 

 

 

 

board (parallel resistance

 

Is there a resistance of

 

 

 

 

 

or

 

 

 

 

between vegetable compart-

 

 

or

 

 

 

 

∞

"

 

approx. 5.9k" between

 

 

 

 

ment heater 1 and 2)?

 

 

 

 

 

∞

"

 

 

 

 

 

 

 

 

 

5 and 6, terminals of 6-

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

It may have contact failure of

pin connector which is

Yes

 

 

 

 

 

Yes

 

connector. Recheck the contact

located at the right top

 

 

 

 

 

 

 

 

after the 6-pin or 2-pin connector

of fan grille?

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

is connected.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace the Filter board.

Replace the defective thermistor.

Check the contact of con- nector connecting each thermistor and connector CN7S on control board. Fix the incomplete contact.

Replace the vegetable compartment heater 1.

Note: Vegetable compartment heater 1 is combined with fan grille.

When outside temperature is 32: or less and compartment temperature is

8: or less, set the temperature of each compartment as follows.

Refrigerator compartment: High

Slide chilled compartment: Chilled

Versa compartment:

Soft freezing

Freezer compartment:

High

Is there voltage AC230V between connector CN2A 5 (Gray) and CN3A 7 (Yellow green) on control board?

Measure the voltage for over 10 seconds.

When an analog tester detects AC 230V, consider the control board normal.

(230V is outputted on every 10 seconds.)

Yes

Is there a resis- tance of approx. 5.9k" between 1 and 2, terminals of 2-pin connector which is located at the left-back bottom of veg- etable compart- ment?

Yes

No

0"

or

∞ "

Replace the vegetable compartment heater 2.

Note: Vegetable com partment heater 2 is combined with partition V/ F.

Check if doors are hermetically closed.

Replace the control board.

2Check refrigerator / slide chilled compartment is excessively cooled (poorly cooled). Follow the refrigerator / slide chilled compartment flowchart on page 19.

OK

Explain proper usage to customer

CN3A

￿

￿

 

7

7

board

CN2A

 

 

5 5

Control

CN7S

8 8

 

 

CN8K 1 1

 

2 2

 

4 4

Refrigerator

 

 

 

 

 

 

 

 

4-pin connector

compartment

 

 

 

 

 

 

 

 

 

 

￿

 

￿

 

thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3￿3￿

 

 

 

 

 

 

 

 

 

 

 

 

 

￿ ￿

 

￿

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4 4

 

 

 

 

 

 

Slide chilled compartment thermistor

 

 

 

 

 

 

 

 

 

 

 

 

 

6￿6￿

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3 3

 

 

 

 

 

 

 

 

 

 

 

 

6-pin connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6-pin connector

Vegetable

 

 

 

 

 

 

 

 

 

5

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

compartment

 

 

 

 

 

 

 

 

 

6

 

6

 

 

 

 

 

 

 

 

heater 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2-pin connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

1

 

 

 

 

 

 

 

 

Vegetable

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

2

 

 

 

 

 

 

 

 

compartment

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Operation P.C. board

heater 2

 

4-pin connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

￿4

￿

 

 

1

￿1

￿

Outside air

 

 

 

 

3

￿3

￿

 

 

2

￿2

￿

thermistor

 

 

 

 

2

￿2

￿

 

 

3

￿3

￿

 

 

 

 

1

1

 

 

 

 

 

 

 

 

4

4

 

TH1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24

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Contents Contents Model MR-G50J-SS-NZEasy Access Vegetable room, Easy Access Freezer Room MR-G50J-NZVegetable compartment 1MechanismSpecifications Specifications MR-G50J-NZElectrical Parts Specifications MR-G50J-NZ NSCE001DC1Wiring Diagram Actual Wiring Diagram Unit mm 782 214 284 456 361 745Refrigerant Circuit Operating mode and Temperature range Function of Operation Panel MR-G50J-NZFunction of normal operation Convenient functionDemonstration mode for shop display Fine adjustment of temperatureThermistor temperature check mode SettingChange mode of compressor rotational speed DisplayChange of display Changing the rotational speedDamper Operation Mode How to make each damper open or closeStatus display of each damper Error history display mode Check points and resetting the error historyDisplay details Flowchart of SELF-CHECK MR-G50J-NZ Troubleshooting with self-checkSelf-check and error display method and operation Release of self-check display modeError display and trouble locating Timing in self-checkCheck point and treatment Display Self-check Block Diagram of Printed Circuit Board MR-G50J-NZ Auto ICE Maker MR-G50J-NZIce making cycle Automatic ice maker circuitMaintenance for water pump and water pipe Troubleshooting for automatic ice-makerOperation by ice making test Water pipe ·ankT holderFlowchart of Trouble Criterion MR-G50J-NZ Excessive cooling No cooling, poor coolingControl Poor cooling Control boardCompressor does not operate Filter boardError Abnormality Possible cause Symptom Treatment Inverter-related indication Compressor does not operateError Abnormality Possible cause Symptom Treatment Code E56 StartPoor defrosting Motor does not workRefrigerator fan Excessive cooling Poor cooling CN7SExcessive cooling No cooling poor cooling Compartment/ Ice making compartmentVersa Trouble Criterion of Main Parts MR-G50J-NZ Abnormal faulty Partment Approx Abnormal faulty Compartment Connector is atAbnormal faulty Compartment Versa compart 415Partition V/F Compartment HeaterHeater board Refrigerator Compartment Tray heater Ice trayTroubleshooting with self-check Components Part NameCheck Method and Criterion Parts Mounted Position Test Point Diagram of Filter Board MR-G50J-NZ Test Point Diagram of Control Board MR-G50J-NZ + +Names of the Parts Min ChillControl board Vertical partitionRight rail of the slide compartment Left rail of the slide compartmentControl panel assembly Automatic ice maker assemblyControl panel upper/ lower Duct R upper/ lower Partition I/ SConnector cover right/ left Cover lowerPartition V/ F Fan grilleDoor switch Tank holderCeiling of versa compartment Operation panel How to remove Rotational heater boardGuide properly and works properly Machine chamber fan motor Compressor cover machine chamber fan motorDoor adjustment Dentifying roller sets MarkingElectrical Parts MR-G50J-SS-NZ AbbreviationHinge assembly Door Parts MR-G50J-SS-NZVegetable compartment Versa compartment RoHS Spec Part name Drawing No 01W 70107W 852 Operation panel M20 026 Door closer Left M20Body Parts MR-G50J-SS-NZ 702 Hinge assembly Left/ Lower 702 Hinge assembly Right/ Lower M20520 Water tank assembly AbbreviationAccessory and Unit Parts MR-G50J-SS-NZ These partNumbers will Be informedPage Specifications subject to change without notice
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