Frigidaire 5303918850 Refrigerator Defrost Thermister Thermostat Kit – OEM Replacement for Frost Issues

Description

Long Description 

The Frigidaire 5303918850 Defrost Thermostat Kit is an OEM replacement designed to correct frost buildup and cooling issues in many Frigidaire, Electrolux, Gibson, Kelvinator, and White‑Westinghouse refrigerators. When the defrost thermostat fails, the evaporator coils freeze over, restricting airflow and causing warm temperatures in the fresh‑food section.

This kit includes the thermostat and wiring components needed to restore proper defrost cycling. Built to original manufacturer specifications, the 5303918850 ensures accurate temperature sensing, safe operation, and long‑term reliability. Ideal for technicians, property managers, and DIY repairers addressing common no‑cool or ice‑block problems.

If your refrigerator is freezing up, running constantly, or warming unexpectedly, this thermostat kit is a proven fix.

Key Features

• OEM replacement for 5303918850
• Restores proper defrost cycle operation
• Prevents evaporator coil freeze‑ups
• Improves cooling performance and airflow
• Includes thermostat and wiring components
• Durable, temperature‑rated construction
• Compatible with multiple Frigidaire‑family brands

Common Symptoms Repaired

• Frost buildup on evaporator coils
• Refrigerator not cooling properly
• Freezer cold but refrigerator warm
• Unit runs continuously
• Ice blocking airflow vents

Compatible Brands

• Frigidaire
• Electrolux
• Gibson
• Kelvinator
• White‑Westinghouse
• Tappan

(I can generate a full model‑by‑model compatibility list if you want.)

Technical Specifications

• Part Type: Defrost Thermostat Kit
• OEM Part Number: 5303918850
• Function: Monitors evaporator temperature and triggers defrost cycle
• Temperature Rating: Factory‑set for Frigidaire specifications
• Installation: Wire‑lead thermostat with included connectors