Kelvinator
Short Cycling / Control or Sizing Issue
Furnace 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
Oversized furnace for home, Thermostat located near supply register, Dirty flame sensor causing intermittent flame loss, High limit cycling from restricted airflow
How to Fix / Troubleshooting
Safety first: Turn OFF power before accessing internal components.
- Check filter and airflow: Replace the filter and ensure registers are open to prevent limit trips.
- Clean flame sensor: Remove and gently clean the flame sensor rod with fine steel wool, then reinstall.
- Thermostat location: Make sure the thermostat is not directly in the path of a supply register or in direct sunlight. Redirect airflow or relocate thermostat if necessary.
- Professional evaluation: If short cycling persists, a technician should check furnace sizing, gas input, and Kelvinator control settings.
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Repair Difficulty
Medium
3/5
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