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Appliance tip of the week.

Most Frequent conditions when a defrost heating element is bad.

The defrost heater - this is a electric heater imbedded in the evaporator coils, the heater melts the frost and changes the frost to water.

If the defrost heater assembly is defective, frost will continue to accumulate on the evaporator coils, and the coils will become plugged with frost. If the evaporator coils are frosted over, the airflow through the coils will be restricted, causing the refrigerator not to cool. Check the evaporator coils to determine if they are frosted over. If the evaporator coils are frosted over, test each component of the defrost system.

Refrigerator not defrosting? This video here provides information on how to test a defrost heater on a refrigerator.

Defrost thermostat

Defrost thermostat

How a common frost free defrost cycle works and the main parts are linked here.

How can a defrost heater fail?

The defrost heater can fail and the evaporator coils will all get plugged up with white snow or frost.

It can ohm test as being open or no continuity.

Can it ohm ok and still be bad....no!

Can it intermittently work?....no!

Can they physically break?....yes!

Can they electrically break?....yes!

Refrigerator defrost heater kit with thermostat for side by side models

Refrigerator defrost heater kit with thermostat for side by side models

Defrost heater assembly, glass tube type

Defrost heater assembly, glass tube type

Defrost heater

Defrost heater

Defrost heater, icemaker evaporator

Defrost heater, icemaker evaporator

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