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.
Common problems & typical repair costs
| Problem | Likely cause | Typical fix | OEM part # | Typical cost |
|---|---|---|---|---|
| Frost on back wall | Defrost heater/sensor | Replace pair | — | $150–$350 |
| Freezer chirp | Evap fan | Replace fan | — | $150–$300 |
| Fridge freezing food | Damper or thermistor | Replace | — | $100–$260 |
| Dead after storm | Main PCB | Replace board | — | $200–$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 labour.
Cost guides for this machine’s common repairs
DIY step-by-step instructions for this model
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