Amana
Thermostat or Flame Sensing Short Cycle
Furnace cycles on and off rapidly (every 30–90 seconds) without reaching temperature.
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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 located near heat source, Dirty flame sensor, Loose thermostat wire connections, Oversensitive thermostat settings
How to Fix / Troubleshooting
Safety: Turn off power before working on thermostat wiring.
- Relocate thermostat (if needed): If thermostat is near a supply register, exterior door, or in direct sunlight, consider relocating to an interior wall.
- Clean flame sensor: A weak flame signal can cause premature shutdown; clean as described in other entries.
- Check thermostat wiring: Tighten all low-voltage connections at the furnace and thermostat.
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Repair Difficulty
Medium
3/5
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