LG Refrigerator Service Manual PDF for Models GR-P227/L227 and GR-P257/L257

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REFRIGERATOR

SERVICE MANUAL

CAUTION

PLEASE READ CAREFULLY THE SAFETY PRECAUTIONS OF THIS BOOK BEFORE CHECKING OR OPERATING THE REFRIGERATOR.

MODEL: GR-P227/L227 GR-P257/L257

COLOR: TITANIUM

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

Contents

Refrigerator Contents Page Front View Specifications Ref No. GR-L227 Ref No. GR-P257 Ref No. GR-L257 Freezer Refrigerator compartment compartment Parts Identification Ref No. GR-P227/GR-P257EXTERNAL Filter Parts Identification Parts Identification How to Adjust Door Height of Refrigerator HOW to Install Refrigerator Before 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 Type Filter Cleaning When customer uses bottled waterOutternal Filter Filter Fixation Replacement of water filter After installing water filter Confirm the amount of water supplied to the icemaker How to Control the Amount of Water Supplied to Icemaker Display Power saving Mode Door Alarm Buzzer Mute ModeMicom Function Monitor Panel Description of Function Exhibition Mode LCD Back Light Control Outside temperature display functionLock function display button lock Filter condition display function Dispenser use selection When ice maker does not operate smoothlyAutomatic ice maker Express Freezer Miracle 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 bar Sequential operation of built-in product Failure Diagnosis Function Test Function Mode Operation Contents Remarks Function of dispenser and water dispenser built-in Test Mode 1 Status LCD Test Mode 2 Status LCD Explation for Micom Circuit Power circuitExplanation for PWB circuit GR-P227/L227 Oscillation circuit Reset circuitGR-P227/L227/P257/L257 Load Driving Circuit Load/dispenser operation, door opening circuit Dispenser operation circuit Lever Switch sensing circuit Measuring part Door opening sensing circuit Short Open Temperature sensing circuit Option 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 Table Defect diagnosis function Stage Items Indicator Remarks Circuit Trouble Diagnosis Trouble Shooting Not 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 Measures Temperature 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 Remarks Driving circuits Motor damper Replace door switch Trouble Diagnosis Items Unit Standards Purposes Remarks Cooling Cycle Heavy Repair Summary Of Heavy Repair Process Contents Tools Items Precautions Precautions During Heavy Repair When replacing a compressor When replacing a drierPractical Work For Heavy Repair Inserting a capillary tube Vacuum Sequence Pipe ConnectionCharging sequence Calculation of amount of refrigerant charged 12-0mm Standard Regulations For Heavy Repair Asia / 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 sounds Explain 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 dispenser Measures 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 formation Others Remove a freezer door HOW to Disassemble and Assemble Handle InsertTubeLineColletClip Assembly COVER, Dispenser Exploded View Optional part Ref No. GR-P227/GR-P257 Ref No. GR-L227/GR-L257 Freezer Compartment Optional part Refrigerator Compartment Machine Compartment ICE & Water Part Dispenser Part No JD8999A