Lg Refrigerator: compressor failure

Professional Repair Guide

What is this symptom?

Experiencing LG refrigerator compressor failure? Common signs include the compressor not running, unusual clicking or buzzing noises, and inadequate cooling in the fridge or freezer. If your refrigerator stays warm while fans and lights are functioning, it likely indicates a compressor or sealed system issue that requires immediate attention.

Urgency: Critical

Important Tips for Lg Models

  • LG refrigerators commonly use linear compressors that have historically shown higher failure rates compared to conventional compressors; class‑action history suggests early failures in some models.

Possible Causes

Compressor internal failure (LG linear compressor)

How to Identify: No vibration from compressor, compressor extremely hot, compressor tries to start then clicks off, fridge not cooling even though fans run

Part: Linear compressor unit

Faulty compressor start relay / overload device

How to Identify: Compressor won’t start, clicking sounds, relay may rattle when shaken or show no continuity on multimeter

Part: Start relay / thermal overload

Faulty control board / inverter failure

How to Identify: Compressor not receiving proper voltage, error blink codes on board, compressor won’t run though other components appear functional

Part: Main control board (inverter section)

Refrigerant leak / sealed system pressure loss

How to Identify: Warm fridge with fans running, weak or absent frost pattern on evaporator, professional pressure test shows low refrigerant

Part: Refrigerant lines/sealed system

Overheating due to poor airflow or dirty condenser coils

How to Identify: Compressor overheats, feels excessively hot, dust laden coils, fridge runs continuously without cooling

Part: Condenser coils and compressor fan

DIY Solutions

Clean condenser coils and ensure adequate airflow

Moderate 30–45 minutes
Tools Needed: soft brush, vacuum
  1. Unplug refrigerator
  2. Move fridge to access back
  3. Brush/vacuum dust from condenser coils
  4. Ensure at least 2–3 inches clearance around fridge
  5. Plug fridge in and monitor compressor behavior
⚠️ Safety First: Ensure unplug before cleaning coils

Test and replace compressor start relay

Advanced 45–90 minutes
Tools Needed: multimeter, screwdrivers
  1. Unplug refrigerator and access compressor area
  2. Locate start relay and overload device on compressor
  3. Shake relay to listen for rattle
  4. Test continuity with multimeter
  5. Replace with matching start relay if defective
⚠️ Safety First: Always disconnect power; be cautious accessing compressor components

Professional Repairs

Compressor replacement (sealed system repair)

Estimated Cost: $650 - $1300

Control board/inverter assembly replacement

Estimated Cost: $200 - $450

When to Call a Professional

Compressor does not run at all after basic checks
Unusual noises (loud buzzing/clicking) persist
Signs of refrigerant leak (oil residue, warm fridge despite fans)
Error codes on control panel indicating compressor-related faults

Preventive Maintenance

  • Clean condenser coils: Overheating and compressor overload
    Frequency: every 6 months
  • Ensure adequate airflow around fridge: Compressor overwork and heat buildup
    Frequency: monthly check

Frequently Asked Questions

Why is my LG Refrigerator compressor failure?
Common causes include internal compressor failure, faulty relay, control board issues, refrigerant leaks, or overheating from dirty coils.
How do I fix LG Refrigerator compressor failure myself?
Start by cleaning the condenser coils for better airflow. For advanced repairs, test and replace the compressor start relay.
How much does it cost to fix compressor failure?
Professional repairs for compressor replacement can range from $650 to $1300, while control board replacements cost between $200 and $450.
When should I call a technician for compressor failure?
Call a technician immediately if the compressor shows failure signs, as it typically requires specialized tools and knowledge to repair.

Community Analytical Insights

Analysis based on real user discussions from appliance repair communities

Common Issues Reported by Users

  • Faulty compressor (5 mentions)

User Suggested Solutions

  1. Compressor replacement under warranty if confirmed as the issue.

    Success rate: 15.0%

  2. LG provided a refund for a faulty compressor.

    Success rate: 8.0%
Analysis based on 5 community discussions
View Sources

Data compiled from real discussions on r/appliancerepair and r/Appliances:

  1. Has LG really resolved the refrigerator compressor issue, or...
  2. Help decide LG or Samsung refrigerator (yes, my only two opt...
  3. LG Refrigerators New Smart Inverter Compressors Versus Linea...
  4. Is an LG refrigerator compressor replacement a new model com...
  5. Repair or replace POS LG refrigerator?

Community Discussions

bad compressor

Compressor replaced under warranty at no charge.

Pro needed View on Reddit →

compressor shot

Repairing the compressor for $400 is an option, with a new 'universal' compressor being a reliable choice.

Pro needed View on Reddit →

problems with compressors

Smart inverter compressors have lower complaint rates compared to linear compressors.

Pro needed View on Reddit →

compressor blew

Compressor replacement under warranty if confirmed as the issue.

Pro needed View on Reddit →

compressor failure

LG provided a refund for a faulty compressor.

Pro needed View on Reddit →

Source: Reddit r/appliancerepair

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