LG Electronics GR-P227/L227, GR-P257/L257 service manual Discharging port of cooling air

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Problems

Causes

Checks

Measures

Remarks

 

 

 

 

 

Ice in the freezer

1) Bad cooling air circulation.

- Check food storage conditions

- Be acquainted with how to use.

- Check the parts related

compartment.

- Intake port is colgged in the freezer

visually.(Check clogging at intake

- Check defrost (Check ice on the

to defrosting if the

- Surface of fan

compartment.

and discharging port of cooling air.)

evaporator and pipes after forced

problem is caused by

grille.

- Discharging port is Clogged.

- Check food occupation ratio in

defrosting).

the faulty defrosting.

- Wall of freezer

- Too much food is stored.

volume(Less than 75%).

 

 

compartment.

- Bad defrosting.

- Check frost on the evaporator after

 

 

- Cool air

 

dissembling shroud and fan grille.

 

 

discharging port.

 

- Check icing at intake port of

 

 

- Basket(rack)

 

refrigerator compartment.

 

 

area.

 

 

 

 

 

 

 

 

- Food surface.

2) Bad freezer compartment door

- Check gasket attachment

- Correct the gasket attachement

- Replace when it can not

- Icing in the

- Faulty gasket

conditions.

conditions and replace it.

be repaired.

shute.

- Faulty assembly

- Check door assembly conditions.

- Door assembly and replacement.

 

 

 

 

 

 

 

3) Over freezing in the freezer

- Refrigerator operates pull down.

-Replace defective parts.

 

 

compartment.

(Check if it is operated

 

 

 

- Faulty MICOM.

intermittently)

 

 

 

 

- The Temperature of freezer

 

 

 

 

compartment is satisfactory, but

 

 

 

 

over freezing happens in the

 

 

 

 

refrigerator compartment even

 

 

 

 

though the notch is set at "weak".

 

 

 

 

 

 

 

 

4) Bad defrosting.

- Check frost on the evaporator after

- Check parts related to defrosting.

 

 

- Heater wire is cut.

dissembling shroud and grille.

- Check defrosting.(Check ice on the

 

 

- Faulty defrost sensor.

- Check ice on the intake port in the

evaporator and pipes after forced

 

 

- Defrosting cycle

refrigerator compartment.

defrosting.)

 

 

 

 

 

 

 

5) User is not familiar with how to

- Check food holds door open.

- Be acquainted with how to use.

 

 

use.

- Check ice on the ice tray.

 

 

 

- Door opens.

 

 

 

 

- High moisture food(water) is stored.

 

 

 

 

 

 

 

 

TROUBLE DIAGNOSIS

Page 63 Page 65
Image 64
Page 63 Page 65
Contents Refrigerator Contents Page Specifications Front ViewRef No. GR-L227 Ref No. GR-P257 Ref No. GR-L257 Parts Identification Freezer Refrigerator compartment compartmentRef No. GR-P227/GR-P257EXTERNAL Filter Parts Identification Parts Identification HOW to Install Refrigerator How to Adjust Door Height of RefrigeratorBefore Installation How to Install Water PipeClass Shape and Spec Nomenclature Connection of Pipe Connector a and B Single Lever Type Faucet generalTwo Hands Type Faucet General TypeFilter Cleaning When customer uses bottled waterOutternal Filter Filter Fixation After installing water filter Replacement of water filterHow to Control the Amount of Water Supplied to Icemaker Confirm the amount of water supplied to the icemakerDoor Alarm Buzzer Mute Mode Display Power saving ModeMicom Function Monitor PanelExhibition Mode Description of FunctionOutside temperature display function LCD Back Light ControlLock function display button lock Filter condition display functionWhen ice maker does not operate smoothly Dispenser use selectionAutomatic ice maker Express FreezerMiracle Zone function Super freezingControl of variable type of freezing room fan Door opening alarm Control of M/C room fan motorDoors of freezing Or home barSequential operation of built-in product Failure Diagnosis Function Mode Operation Contents Remarks Test FunctionTest Mode 1 Status LCD Test Mode 2 Status LCD Function of dispenser and water dispenser built-inPower circuit Explation for Micom CircuitExplanation for PWB circuit GR-P227/L227Oscillation circuit Reset circuitGR-P227/L227/P257/L257 Load/dispenser operation, door opening circuit Load Driving CircuitLever Switch sensing circuit Measuring part Dispenser operation circuitDoor opening sensing circuit Temperature sensing circuit Short OpenOption designation circuit model separation function Switch entry circuitSeparation Connection Status Application Standard Stepping motor operation circuit Fan motor driving circuit freezer, mechanical area +5 C +9F 33 k Ω 56 k Ω JCR1 Main PCB Sensor resistance characteristics table Miracle Zone Stepping Motor / Display Operation Principle Harvest Mode Icemaking ModeFill/Park Position Water supply amount TableStage Items Indicator Remarks Defect diagnosis functionCircuit Trouble Shooting Trouble DiagnosisNot performed Evaporator by heating as Refrigeration Refrigeration Residual Refrigeration No cooling air circulation Is weak Fan does not work Recess Sounds Compressor compartment operating sounds Bad soldering Bad rivet contact Short Structure Door foam Appearance Sag Faults PowerProblems Causes Checks Measures Remarks Problems Causes Checks MeasuresTemperature Cooling Disconnected from the motor Refer to fan motor disassembly Defrosting failure Problems CausesMeasures Remarks Remove the parts and replace it Icing Discharging port of cooling air Sound Click Contraction of evaporator Sources Sound Burping It happens when refrigerant expands Odor Problems Symptom Causes Checks Measures Remarks MicomDriving circuits Motor damper Replace door switch Trouble Diagnosis Cooling Cycle Heavy Repair Items Unit Standards Purposes RemarksProcess Contents Tools Summary Of Heavy RepairPrecautions During Heavy Repair Items PrecautionsWhen replacing a drier When replacing a compressorPractical Work For Heavy Repair Inserting a capillary tubePipe Connection Vacuum SequenceCharging sequence Calculation of amount of refrigerant chargedStandard Regulations For Heavy Repair 12-0mmAsia / Middle-East Africa Brazing Reference DrawingsEurope & CIS / America Problems Checks and Measures Explain the principles of temperature changeSound depends on the installation location Explain general principles of soundsExplain the procedure and principles of ice maker operation Explain the flow of refrigerantExplain the characteriistics of moving parts Explain the principles of water supplied to dispenserMeasures for Symptoms on Temperature Check the temperature control button and set at strong Odor and FrostExplain the basic principles of food odor Explain the basic principles of frost formationOthers HOW to Disassemble and Assemble Remove a freezer doorHandle InsertTubeLineColletClip Assembly COVER, Dispenser Exploded View Ref No. GR-P227/GR-P257 Optional partRef No. GR-L227/GR-L257 Freezer Compartment Refrigerator Compartment Optional partMachine Compartment ICE & Water Part Dispenser Part No JD8999A
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