This defrost thermostat senses evaporator temperature and helps control the freezer's defrost heater so frost melts at the right time, protecting cooling efficiency and preventing excessive ice buildup. What it does
- Closes at cold temperatures to allow the defrost heater to run during a defrost cycle
- Opens when the evaporator warms to stop the heater and prevent overheating
- Commonly used when frost builds on the evaporator or defrost heater runs continuously
- Helps maintain proper defrost timing for consistent cooling performance
What's included One defrost thermostat (50°F) as pictured Install notes
- Disconnect power to the appliance before accessing electrical components
- Mount and wire exactly as the original part;
- Replace any damaged clips, grommets, or harnesses for a secure fit and good thermal contact
Do-It-Yourself Stories from Customers like You
Not cooling properly eventually evaporator fan failure Richard D. • Wood Ridge , NJ • April 25, 2016
My problem first showed up as varying temperature in both sections of my old mid 1970’s Frigidaire model FPCI-170T-7 refrigerator, which is not listed on most appliance repair databases.
Running on the warm side from time to time, as well as sudden fan noise (probably the fan blade hitting ice build-up on the evaporator coil) alerted me to a possible defrost system problem, since the compressor was cooling. The evaporator fan eventually failed after a day or so, and a major repair was...
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