Fagor Short Cycling / Control Instability

Refrigerator cycles on and off very frequently (short cycling), with compressor starting and stopping every few minutes.

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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

Faulty temperature sensor giving unstable readings, Oversensitive thermostat placement near air outlet, Main control board relay issue, Refrigerant system imbalance causing rapid pressure changes

How to Fix / Troubleshooting

Safety first: Unplug the refrigerator before accessing sensors or control boards.

Steps:

  • 1. Verify temperature stability: Use a thermometer to check if actual temperatures are stable despite frequent cycling.
  • 2. Inspect sensors: Check that NTC sensors are firmly attached to their mounting points and not hanging loose in airflow. Replace any sensor with erratic resistance readings.
  • 3. Control board: If sensors are good, the main control board may have a faulty relay or logic causing short cycling. Replacement may be required.
  • 4. Professional check: If cycling is accompanied by unusual compressor noises, have a technician check the sealed system.
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Repair Difficulty

Hard 4/5

Required Part

Refrigerator Compartment NTC Temperature Sensor
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