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LG LTCS20220W User Manual

LG LTCS20220W
36 pages
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MODELS:
LTCS20220W /01
LTCS20220B /01
LTCS20220S /01
REFRIGERATOR
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
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LG LTCS20220W Specifications

General IconGeneral
Child lock-
Door hingeRight
Product colorWhite
Housing materialMetal, Stainless steel
Reversible doorsYes
Shelves materialTempered glass
Appliance placementFreestanding
Noise level- dB
Total net capacity572 L
Total gross capacity- L
Fridge net capacity416 L
Fridge number of shelves/baskets2
Freezer positionTop-placed
Freezing capacity- kg/24h
Freezer net capacity156 L
Storage time during power failure- h
Connected load- W
Annual energy consumption406 kWh
Weight and Dimensions IconWeight and Dimensions
Depth838.2 mm
Width736.6 mm
Height1676.4 mm
Weight91600 g

Summary

Safety Precautions

General Safety Instructions

Essential safety guidelines to follow before servicing the refrigerator unit.

Refrigerator Specifications

General Features and Model Specifications

Detailed technical specifications and general features across different models.

Parts Identification

Refrigerator Component Overview

Visual identification and listing of major refrigerator components.

Disassembly Procedures

Removing Refrigerator Door

Step-by-step instructions for safely removing the refrigerator door from its hinges.

Removing Freezer Door

Step-by-step instructions for safely removing the freezer door from its hinges.

Door Replacement and Reversal

Replacing Refrigerator Door

Guide for reattaching the refrigerator door to its original position.

Reversing Freezer Door

Instructions for reversing the swing direction of the freezer door.

Refrigerator Door Reversal

Reversing the Refrigerator Door

Detailed steps for changing the swing direction of the refrigerator door.

Door Hinge Reassembly

Reassembling Bottom Hinges

Procedures for reassembling the bottom hinge components for refrigerator doors.

Final Door Assembly

Reattaching Freezer Door and Covers

Steps to reattach the freezer door and secure top hinge covers.

Door Alignment and Leveling

Aligning Doors and Leveling Unit

Adjusting door alignment and unit leveling for proper closure and stability.

Fan and Fan Motor Removal

Guide on how to remove the fan and fan motor assembly.

Component Removal Procedures

Defrost Control and Control Box Removal

Instructions for removing the defrost control assembly and refrigerator control box.

Refrigerator Lighting Replacement

Steps for replacing the LED lighting assembly in the refrigerator.

Compressor Electrical Systems

Compressor Role and PTC-Starter

Explains the compressor's function and the PTC-starter's role in motor starting.

Compressor Protection Mechanisms

PTC-Starter Usage Notes

Important precautions and notes for using the PTC-starter correctly.

OLP Definition and Role

Defines the Overload Protector (OLP) and its protective function for the compressor motor.

Electrical Circuit Diagrams

Main and Ice Maker Circuit Schematics

Provides schematic diagrams for the main control board and ice maker circuits.

Troubleshooting Compressor Operation

Compressor and Electric Component Checks

Diagnostic steps for compressor and related electrical components.

Troubleshooting PTC and OLP

PTC and OLP Resistance Checks

Procedure for checking the resistance of the PTC-starter and OLP.

Troubleshooting Other Components

Compressor Performance and Fan Motor Issues

Diagnosing issues related to poor compressor performance and fan motor operation.

Evaporator Frosting and Heater Checks

Troubleshooting heavy frost buildup on the evaporator and defrost heater issues.

General Service Diagnosis

Service Diagnosis Chart

A chart mapping complaints and symptoms to possible causes and solutions.

Refrigeration Cycle and Leak Analysis

Refrigerating Cycle Troubleshooting

Troubleshooting guide based on the refrigeration cycle state and symptoms.

Leakage Detection Procedure

Methods for detecting refrigerant leaks in the sealed system.

Ice Maker Operation and Repair

Ice Maker Operation Principle

Explains the operational sequence and principle of the automatic ice maker.

Ice Maker Functional Modes

Icemaking, Harvest, and Fill Modes

Details the functions and processes of icemaking, harvest, and fill modes.

Ice Maker Water Supply Control

Fill/Park Position and Water Amount

Describes the fill/park position and how water supply amount is adjusted.

Ice Maker Diagnostics and Errors

Function Test and Error Codes

Procedures for testing the ice maker and interpreting error codes.

MICOM Control System Overview

MICOM Function and Defrost Cycle

Explains the MICOM control functions and the automatic defrost cycle.

MICOM System Defect Diagnosis

Error Codes and Failure Status

Details the error codes displayed for MICOM system failures.

MICOM System Operational Modes

Test Mode Operation

Guide on using the test mode for diagnostics and function checks.

Demonstration Mode

Instructions for activating and exiting the demonstration mode.

Printed Circuit Board (PCB) Functionality

Main PCB Layout and Connectors

Identifies the layout of the main PCB and its various connectors.

PCB Power and Load Circuits

Power Supply and Load Circuit Checks

Procedures for checking power supply and load circuits on the PCB.

Door Switch Monitoring Circuit

Details the circuit for monitoring refrigerator door switches.

PCB Sensor and LED Circuits

Temperature Sensor Circuitry

Explains the wiring and operation of temperature sensor circuits.

LED Power Circuitry

Describes the circuit responsible for powering the LED indicators.

Sensor and Fan Component Specs

Sensor Resistance and Voltage Specifications

Provides resistance and voltage specifications for temperature sensors.

Fan Motor Output Voltage

Specifies the output voltage for the freezer and cooling fan motors.

Exploded Views: Case Parts

Identification of Case Components

Visual guide to identify and locate various case parts of the refrigerator.

Exploded Views: Freezer Parts

Identification of Freezer Components

Visual guide to identify and locate various parts within the freezer compartment.

Exploded Views: Refrigerator Parts

Identification of Refrigerator Components

Visual guide to identify and locate various parts within the refrigerator compartment.

Exploded Views: Door Parts

Identification of Door Components

Visual guide to identify and locate various parts attached to the refrigerator doors.

Exploded Views: Ice Maker Parts

Identification of Ice Maker Components

Visual guide to identify and locate various parts of the ice maker assembly.

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