Frigidaire
Short Cycling / Temperature Fluctuation
Freezer cycles on and off more frequently than usual; temperature fluctuates.
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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
Thermostat or thermistor out of calibration, Control board relay chatter, Poor air circulation around thermostat sensor, Oversized unit for small space causing rapid temperature swings
How to Fix / Troubleshooting
Safety First: Disconnect power before accessing controls or sensors.
- Step 1 – Verify load and usage: Ensure the freezer is at least half full; empty freezers can cycle more frequently. Avoid frequent door openings.
- Step 2 – Check sensor placement: Make sure the thermistor or thermostat sensing bulb is not touching the evaporator or walls, which can cause false readings.
- Step 3 – Test thermostat/thermistor: Measure resistance and compare to spec. Replace if readings are unstable or out of range.
- Step 4 – Control board: If the relay on the board is chattering or sticking, replace the electronic control board.
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Repair Difficulty
Medium
3/5
Required Part
Freezer Temperature Sensor (Thermistor)
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