JennAir Short Cycling – Control or Compressor Start Issue

Freezer short cycles, turning on and off 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 control or thermistor, Weak compressor start relay, Overheating compressor, Incorrect thermostat calibration

How to Fix / Troubleshooting

Safety first: Unplug the freezer before accessing the compressor or control board.

  • Step 1 – Check temperature setting: Ensure the setpoint is reasonable (around 0°F). Extremely low settings can cause frequent cycling.
  • Step 2 – Clean condenser and ensure airflow: Overheating due to poor ventilation can cause the overload to trip repeatedly.
  • Step 3 – Listen to compressor: If it clicks on and off quickly without running smoothly, the start device may be failing. Replace the compressor start relay/overload if suspect.
  • Step 4 – If problem persists: A failing compressor or control board may be at fault and should be evaluated by a technician.
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Repair Difficulty

Hard 4/5

Required Part

Compressor Start Device
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