Westinghouse Short Cycling

Unit frequently cycles on and off, running for only a few minutes at a time.

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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

Oversized unit for space, thermostat sensor too close to supply air, dirty filter or coil causing freeze protection trips, low refrigerant charge, high-pressure trips

How to Fix / Troubleshooting

Safety: Turn off power before moving sensors or cleaning coils.

Steps:

  • Check filter and coils: Clean the air filter and indoor coil to ensure proper airflow.
  • Sensor placement: Ensure the room temperature sensor is in the return air stream, not directly in the cold supply air.
  • Room size: If the unit is significantly oversized, consider using a lower fan speed or adjusting setpoint to reduce cycling.
  • Professional diagnosis: If short cycling persists, have a technician check refrigerant charge and safety controls.
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Repair Difficulty

Medium 3/5

Required Part

Indoor Ambient Thermistor (Room Temperature Sensor)
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