Often asked: How To Replace Defrost Heater In Refrigerator?

How do you fix a defrost heater on a refrigerator?


  1. Disconnect the electrical power.
  2. Remove shelf supports from the freezer.
  3. Remove the back panel.
  4. Disconnect the wires.
  5. Remove the defrost heater.
  6. Install the new the defrost heater.
  7. Reinstall the back panel.
  8. Restore electrical power.

Where is the defrost heater in a fridge?

Locate your defrost heater. It can be located behind the back panel of the freezer section of your refrigerator, or under the floor of your refrigerator’s freezer section. Defrost heaters are commonly located beneath a refrigerator’s evaporator coils.

What happens if defrost thermostat goes bad?

A faulty defrost termination thermostat may result in the defrost heater never heating and a solid frost buildup on the evaporator coil, which results in too warm temperatures. The thermostat contacts are normally closed and have continuity until it reaches 140 degrees.

What causes a refrigerator to not defrost?

One of the most common reasons your fridge may not be defrosting is a faulty timer. Issues with these parts are easy to diagnose, but the timer itself cannot easily be repaired. The best solution is to replace the timer.

How does a refrigerator defrost heater work?

The defrost mechanism in a refrigerator heats the cooling element (evaporator coil) for a short period of time and melts the frost that has formed on it. The resulting water drains through a duct at the back of the unit.

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What is the function of defrost heater in refrigerator?

The defrost heaters are used to melt accumulated frost off the evaporator coil surfaces, and warm the drain pan to allow the defrost condensate to exit down the drain line without refreezing in the pan. A defrost termination control may be used to end the defrost period based on temperature.

What is defrost thermostat?

What is a Defrost Thermostat? A defrost thermostat works separately to the refrigeration system and is responsible for stopping frost forming on evaporators, in order to avoid the increased costs of less efficient refrigeration.

How do you force a refrigerator to defrost?

How do you Force Defrost? Well, on “tabletop” control models, press the Power Freeze and Fridge buttons simultaneously for about 8 seconds, until the display goes blank. Then, press any other button until “Fd” appears. A Beep should sound and defrost begins.

Are defrost heaters interchangeable?

Nope, they are different temps. What’s the worst that could happen if you install a different defrost thermostat not made for your model. Defrost Timer Mechanical timers are more common and usually activate a defrost cycle every 8-10 hours of compressor run time.

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