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LG RC7055*P*Z - User Manual

LG RC7055*P*Z
55 pages
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HEAT PUMP DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE
CORRECTLY BEFORE OFFERING SERVICE.
MODEL : RC9055*P*Z (RH9051WH)
RC8055*P*Z (RH8051WH)
RC7055*P*Z (RH7050WH)
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LG RC7055*P*Z Specifications

General IconGeneral
BrandLG
ModelRC7055*P*Z
CategoryDryer
LanguageEnglish

Summary

Important Safety Notice

General Safety Precautions

Essential safety precautions and warnings to prevent injury and property damage during service.

Grounding Device Reconnection

Instructions for properly reconnecting grounding devices after service to ensure electrical safety.

Electrostatic Discharge (ESD) Precautions

Guidelines for handling sensitive electronic components to prevent damage from static discharge.

Specifications

Installation Instructions

Leveling the Dryer

Instructions on how to properly level the dryer for optimal performance and reduced vibration.

Earthing and Grounding Procedures

Mandatory procedures for grounding the appliance to prevent electric shock.

Maintenance Instructions

Component Testing Tips

Thermostat Assembly Testing

Procedure and expected results for testing the thermostat assembly.

Low Temperature Thermistor Testing

Method for measuring the resistance of low-temperature thermistors.

Heater and High Thermistor Testing

Testing procedures for the heater and high-temperature thermistor.

Wiring Diagram

Troubleshooting

Troubleshooting by Button Press

Guide to diagnosing issues based on button presses and displayed codes.

Load Operation Checks

Specific checks during load operation, including water sensor and control valve status.

Troubleshooting by Button Press (Continued)

Further diagnosis based on specific button combinations and display feedback.

Error Mode Codes (EE1-DE)

Explanation of error codes EE1 to DE and their corresponding check points.

Error Mode Codes (FI)

Analysis of the 'FI' error code related to thermistor issues and filter status.

Troubleshooting Flowchart

Visual flowchart to guide troubleshooting steps from power-on to specific component checks.

Diagnostic Test

Test 1: Electric Supply & Control Check

Diagnosing power and controller issues by checking voltage and connections.

Test 2: Door Switch; Lamp Check

Troubleshooting lamp operation and door switch malfunctions.

Test 3: Motor Check

Diagnosing motor issues, including 'Clean Filter' errors and abnormal noise.

Test 4: Heater Check

Troubleshooting heater operation, drying failure, and temperature issues.

Test 5: Pump Check

Diagnosing pump issues indicated by 'OE' error signals and water flow.

Test 6: Thermistor Check

Identifying poor drying or abnormal thermistor operation by checking resistance.

Test 7: Moisture Sensor Check

Troubleshooting drying failures related to the moisture sensor's performance.

Test 8: Not Drying Diagnosis

Flowchart for diagnosing 'Not Drying' symptoms, covering installation and component checks.

Test 9: Long Drying Time Diagnosis

Troubleshooting steps for prolonged drying times, including Eco Mode and thermostat checks.

Test 10: Abnormal Noise Diagnosis

Identifying causes of abnormal noises, such as pipe interference, belt issues, or bearings.

Test 11: Water Leakage Diagnosis

Procedure for diagnosing and locating water leaks within the dryer.

Disassemble Instructions

Service Bulletin

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