LG Refrigerator: compressor failure
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.
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
- Unplug refrigerator
- Move fridge to access back
- Brush/vacuum dust from condenser coils
- Ensure at least 2–3 inches clearance around fridge
- Plug fridge in and monitor compressor behavior
Test and replace compressor start relay
- Unplug refrigerator and access compressor area
- Locate start relay and overload device on compressor
- Shake relay to listen for rattle
- Test continuity with multimeter
- Replace with matching start relay if defective
Next step
Choose the next step for compressor failure
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Compressor
Compresses refrigerant within the sealed cooling system and requires specialized service equipment.
- Typical part-only price
- $180 - $600
- DIY difficulty
- Hard
- Estimated time
- 120-240 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Main Control Board
The central brain of the appliance that controls all components, cycles, and timings.
Model-compatible Refrigerator parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Refrigerator Condenser Coil Brush
For routine cleaning of accessible condenser areas where the manufacturer permits it. It does not repair a sealed-system or compressor fault.
Model-Compatible Refrigerator Water Filter
A routine replacement item on models with a water filter. Match the complete appliance model and existing filter number before ordering.
Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Professional Repairs
Compressor replacement (sealed system repair)
Control board/inverter assembly replacement
When to Call a Professional
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?
How do I fix LG Refrigerator compressor failure myself?
How much does it cost to fix compressor failure?
When should I call a technician for compressor failure?
Community Analytical Insights
Guidance from available sources; statistical claims are shown only for samples of at least 10 discussions
Common Issues Reported by Users
- Faulty compressor (5 mentions)
User Suggested Solutions
-
Compressor replacement under warranty if confirmed as the issue.
-
LG provided a refund for a faulty compressor.
Limited-source guidance; percentages and success-rate claims are not shown
View
Sources
Data compiled from real discussions on r/appliancerepair and r/Appliances:
Community Discussions
bad compressor
Compressor replaced under warranty at no charge.
compressor shot
Repairing the compressor for $400 is an option, with a new 'universal' compressor being a reliable choice.
problems with compressors
Smart inverter compressors have lower complaint rates compared to linear compressors.
compressor blew
Compressor replacement under warranty if confirmed as the issue.
compressor failure
LG provided a refund for a faulty compressor.
Source: Reddit r/appliancerepair
User Comments (0)
Share your experience or solution below.
Please login to post a comment.
Be the first to comment!