F3
Hotpoint Defrost Sensor / Thermostat Error

Display shows F3 and the defrost cycle does not operate correctly, causing frost buildup.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Failed defrost thermostat, Open defrost sensor, Loose wiring at evaporator, Faulty PCB input

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before accessing the evaporator area.

Steps:

  • Remove the freezer rear panel to expose the evaporator.
  • Locate the defrost thermostat (clip-on disc) or sensor.
  • Test continuity when the thermostat is cold; it should be closed.
  • Inspect wiring for breaks.

Corrective action: Replace any open thermostat or sensor. If F3 persists, the main control board may need replacement.

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Repair Difficulty

Hard 4/5

Required Part

Defrost Thermostat
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