Mitsubishi Electronics MR-G50J-SS-NZ Inverter-related indication Compressor does not operate

Page 21

Inverter-related indication “Compressor does not operate”

Error

Abnormality

Possible cause

Symptom

Treatment

code

e50

Trouble of

•When there is

Compressor

Replace the control board.

inverter circuit

any trouble in the

does not

circuit which

rotate.

detects phase

current of com-

pressor.

Bus-bar

•Power supply

Compressor

e51

Start

voltage is

voltage is

does not

Arrange

abnormal.

abnormal.

rotate.

160V or

power sup-

•Defective reactor

Measure the voltage of

more

ply to obtain

the rated

on the N/F board

power supply.

voltage,

280V or more

180-280V.

Arrange power supply to make the voltage

within 180-280V and conduct the following

checks.

Does AC230V run

Check the

between CN51 ter-

No

connection

Abnormal-

Connect

minals 1 and 3, on

between filter

them

the control board?

board and

properly.

(See page 32.)

control board.

Yes

Normal

Replace the

Replace the

control board.

filter board.

e52

Trouble of

•When the inverter

Compressor

Unplug the power cord and then plug it in 10 minutes.

inverter software

driving software

does not

reset function

malfunctions.

rotate.

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

e52 display again.

No error code display

Replace the control board.

Explanation to customer

•Abnormal start-

Compressor

e53

•Compressor

Start

up

motor gets locked.

does not

•Defective circuit

rotate.

•Abnormal

Disconnect 6-pin

Measure the

on control board

synchronization

connector in

resistance of

•Defective contact

machine cham-

compressor’s

•Trouble of

of CN50G on

ber to check

No

winding

No

Exchange

overcurrent

control board

resistance

between each

detection

•Defective contact

the unit

between each

terminal of 1,

of machine

terminal of 1, 2

2 and 3: Are

chamber 6-pin

and 3: Are they

they approx.

connector

approx. 9.3'

9.3' (20:)?

(20:)?

Yes

Yes

*Replace lead wire assembly C.

*Is compressor

No

Check the connection of the

Abnormal

energized at

connector CN50G on the

control board or the machine

startup?

chamber 6-pin connector.

Connect them

Yes

Normal

properly.

Exchange

Replace the

the unit

control board.

*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.

21

Image 21

Contents Model MR-G50J-SS-NZ ContentsMR-G50J-NZ Easy Access Vegetable room, Easy Access Freezer RoomVegetable compartment 1MechanismSpecifications MR-G50J-NZ SpecificationsNSCE001DC1 Electrical Parts Specifications MR-G50J-NZWiring Diagram Actual Wiring Diagram 782 214 284 456 361 745 Unit mmRefrigerant Circuit Function of Operation Panel MR-G50J-NZ Operating mode and Temperature rangeFunction of normal operation Convenient functionFine adjustment of temperature Demonstration mode for shop displayThermistor temperature check mode SettingDisplay Change mode of compressor rotational speedChange 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 Troubleshooting with self-check Flowchart of SELF-CHECK MR-G50J-NZSelf-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 Auto ICE Maker MR-G50J-NZ Block Diagram of Printed Circuit Board MR-G50J-NZIce making cycle Automatic ice maker circuitTroubleshooting for automatic ice-maker Maintenance for water pump and water pipeOperation by ice making test Water pipe ·ankT holderFlowchart of Trouble Criterion MR-G50J-NZ Excessive cooling No cooling, poor coolingControl Control board Poor coolingCompressor does not operate Filter boardInverter-related indication Compressor does not operate Error Abnormality Possible cause Symptom TreatmentStart Error Abnormality Possible cause Symptom Treatment Code E56Poor defrosting Motor does not workRefrigerator fan CN7S Excessive cooling Poor coolingExcessive cooling No cooling poor cooling Compartment/ Ice making compartmentVersa Trouble Criterion of Main Parts MR-G50J-NZ Abnormal faulty Compartment Connector is at Abnormal faulty Partment ApproxAbnormal faulty Compartment Versa compart 415Compartment Heater Partition V/FTray heater Ice tray Heater board Refrigerator CompartmentTroubleshooting 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-NZMin Chill Names of the PartsVertical partition Control boardRight rail of the slide compartment Left rail of the slide compartmentAutomatic ice maker assembly Control panel assemblyControl panel upper/ lower Duct R upper/ lower Partition I/ SCover lower Connector cover right/ leftPartition V/ F Fan grilleDoor switch Tank holderCeiling of versa compartment Operation panel How to remove Rotational heater boardGuide properly and works properly Compressor cover machine chamber fan motor Machine chamber fan motorDentifying roller sets Marking Door adjustmentAbbreviation Electrical Parts MR-G50J-SS-NZHinge assembly Door Parts MR-G50J-SS-NZVegetable compartment Versa compartment 01W 701 RoHS Spec Part name Drawing No07W 852 Operation panel M20 026 Door closer Left M20Body Parts MR-G50J-SS-NZ 702 Hinge assembly Right/ Lower M20 702 Hinge assembly Left/ Lower520 Water tank assembly AbbreviationThese part Accessory and Unit Parts MR-G50J-SS-NZNumbers will Be informedPage Specifications subject to change without notice