LG LTCS20020S Repair Guide
LG’s 20 cu ft top freezer, the apartment and starter home workhorse with LG electronics and a smooth inverter compressor. Short failure list, clear codes.
LG LTCS20020S is a top freezer refrigerator refrigerator sold 2020 to present. Its most common repair is frost on back wall, usually $150 to $350.
- 4 common problems with causes, fixes and costs below.
- 3 error codes decoded.
- A refrigerator like this lasts about 10 to 15 years.
- Check the model and serial tag before you order any part.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| Frost on back wall | Defrost heater/sensor | Replace pair | not listed | $150 to $350 |
| Freezer chirp | Evap fan | Replace fan | not listed | $150 to $300 |
| Fridge freezing food | Damper or thermistor | Replace | not listed | $100 to $260 |
| Dead after storm | Main PCB | Replace board | not listed | $200 to $400 |
Costs are national averages for professional repair (parts + labor). See the linked cost guides below for full breakdowns.
Error codes
| Code | What it means |
|---|---|
| Er FF | Evap fan |
| Er dH | Defrost |
| Er rS/FS | Sensors |
Tech notes
Not the troubled linear design, this platform’s inverter compressor has a solid record. Most calls end at defrost parts.
Sources
Where the safety, regulatory and warranty claims on this page come from. Repair costs are our own figures based on Arizona market rates and OEM parts pricing.
- Food Safety During a Power Outage FoodSafety.gov (U.S. Dept. of Health & Human Services) The 40°F threshold and the 2-hour rule for discarding perishable food.
- Stationary Refrigeration and Air Conditioning (Section 608) U.S. Environmental Protection Agency Refrigerant handling rules and the certification required to open a sealed system.
- Section 608 Technician Certification U.S. Environmental Protection Agency Which certification type covers household refrigerators and freezers.
- Refrigerator Limited Warranty (PDF) LG Electronics U.S.A. Compressor and sealed system warranty terms, including which years cover labor.
Cost guides for this machine’s common repairs
DIY step by step instructions for this model
Find a refrigerator repair pro near you.
Browse independent appliance repair companies by city, ratings, hours, and phone numbers, no middleman.
We'll buy your LG LTCS20020S, or haul it away.
If the repair costs more than this machine is worth to you, we'll quote you on taking it. Cash offer if it still has value, free or paid scrap pickup if it doesn't. We'll tell you honestly which it is.