LG Electronics GR-P257/L257, GR-P227/L227 service manual Others

Page 85

TROUBLE DIAGNOSIS

4-5. Others

Problems

Checks and Measures

 

 

The refrigerator case is hot.

■ Explain the principles of radiator.

 

• The radiator pipes are installed in the refrigerator case and partition plate

 

between the refrigerator and the freezer compartment in order to prevent

 

condensation formation. Particularly in summer or after installation of

 

refrigerator, it may feel hot but it is normal. If there is no enough space to

 

dissipate heat, it can be hotter due to lack of heat radiation. Please install a

 

refrigerator in a well-ventilated place and leave a clearance between refrigerator

 

and wall:

 

 

Small holes in a door liner

■ Explain that the hole is for releasing gas.

 

• A small hole in the door liner is for releasing gas during insulation materials

 

lining work. With a releasing hole, forming can be easily done .

 

 

Electric bills are too much.

■ Check the use conditions.

 

• Too frequent door opening and hot food storing cause the compressor to

 

operate continuously and hence increase the electric consumption and bills.

 

 

Condensation on the inside

■ Explain how to store foods

wall of the refrigerator

• Condensation forms when refrigerator is installed at damp area, door is

compartment and the cover of

frequently opened, and wet foods are not stored in the air tight container or

properly vegetable drawer.

wrapped. Be sure to store wet foods in the air tight container or in the wrap.

 

 

When is the power connected?

■ When should the power be connected ?

 

• You can connect the power right after the installation. But if the refrigerator was

 

laid flat during transportation for a long period of time and the refrigerant and

 

compressor oils are mixed up, then this will affect badly the performance of a

 

refrigerator. Be sure to connect the power 2~3 hours after refrigerator is

 

installed.

 

 

Door does not open properly.

■ Refrigerator compartment door does not open properly.

 

• When the door is open, warm open air comes into the compartment and is

 

mixed up with cool air. This mixed air shall be compressed and increase the

 

internal pressure when door is closed. This causes the door sticked closely to

The front side should

the refrigerator in a moment. (If the refrigerator is used for a long time, it will

be raised a little bit higher

then open smoothly.)

than the rear side.

 

■When the refrigerator compartment door is open and close, the freezer

compartment door moves up and down.

• When the refrigerator compartment door is open and close, fresh air comes into the freezer compartment and moves up and down the freezer compartment door.

■ Door opens too easily.

•There is a magnet in the gasket rubber so that it is ok. if door is securely closed without a gap. It can be open easily if the foods in the refrigerator or freezer

compartments hold the door open.

■A door does not close properly.

•If the rear side of the refrigerator is raised higher than front side, door shall not be easily closed. Adjust the level of refrigerator with levelling screws.

- 83 -

Page 84 Page 86
Image 85
Page 84 Page 86
Contents Refrigerator Contents Page Front View SpecificationsRef No. GR-L227 Ref No. GR-P257 Ref No. GR-L257 Freezer Refrigerator compartment compartment Parts IdentificationRef No. GR-P227/GR-P257EXTERNAL Filter Parts Identification Parts Identification How to Adjust Door Height of Refrigerator HOW to Install RefrigeratorBefore Installation How to Install Water PipeClass Shape and Spec Nomenclature Single Lever Type Faucet general Connection of Pipe Connector a and BTwo Hands Type Faucet General TypeFilter Cleaning When customer uses bottled waterOutternal Filter Filter Fixation Replacement of water filter After installing water filterConfirm the amount of water supplied to the icemaker How to Control the Amount of Water Supplied to IcemakerDisplay Power saving Mode Door Alarm Buzzer Mute ModeMicom Function Monitor PanelDescription of Function Exhibition ModeLCD Back Light Control Outside temperature display functionLock function display button lock Filter condition display functionDispenser use selection When ice maker does not operate smoothlyAutomatic ice maker Express FreezerMiracle Zone function Super freezingControl of variable type of freezing room fan Control of M/C room fan motor Door opening alarmDoors of freezing Or home barSequential operation of built-in product Failure Diagnosis Function Test Function Mode Operation Contents RemarksFunction of dispenser and water dispenser built-in Test Mode 1 Status LCD Test Mode 2 Status LCDExplation for Micom Circuit Power circuitExplanation for PWB circuit GR-P227/L227Oscillation circuit Reset circuitGR-P227/L227/P257/L257 Load Driving Circuit Load/dispenser operation, door opening circuitDispenser operation circuit Lever Switch sensing circuit Measuring partDoor opening sensing circuit Short Open Temperature sensing circuitOption 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 Icemaking Mode Harvest ModeFill/Park Position Water supply amount TableDefect diagnosis function Stage Items Indicator RemarksCircuit Trouble Diagnosis Trouble ShootingNot 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 Power FaultsProblems 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 Micom Problems Symptom Causes Checks Measures RemarksDriving circuits Motor damper Replace door switch Trouble Diagnosis Items Unit Standards Purposes Remarks Cooling Cycle Heavy RepairSummary Of Heavy Repair Process Contents ToolsItems Precautions Precautions During Heavy RepairWhen replacing a compressor When replacing a drierPractical Work For Heavy Repair Inserting a capillary tubeVacuum Sequence Pipe ConnectionCharging sequence Calculation of amount of refrigerant charged12-0mm Standard Regulations For Heavy RepairAsia / Middle-East Africa Brazing Reference DrawingsEurope & CIS / America Explain the principles of temperature change Problems Checks and MeasuresSound depends on the installation location Explain general principles of soundsExplain the flow of refrigerant Explain the procedure and principles of ice maker operationExplain the characteriistics of moving parts Explain the principles of water supplied to dispenserMeasures for Symptoms on Temperature Odor and Frost Check the temperature control button and set at strongExplain the basic principles of food odor Explain the basic principles of frost formationOthers Remove a freezer door HOW to Disassemble and AssembleHandle InsertTubeLineColletClip Assembly COVER, Dispenser Exploded View Optional part Ref No. GR-P227/GR-P257Ref No. GR-L227/GR-L257 Freezer Compartment Optional part Refrigerator CompartmentMachine Compartment ICE & Water Part Dispenser Part No JD8999A
Top Page Image Contents