E14
Thermia Rollout Switch / Flame Rollout Fault

Furnace display shows E14, unit may shut down on very cold days, sometimes with long run times before fault.

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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

Tripped manual reset rollout switch, Blocked heat exchanger or flue, Cracked heat exchanger causing flame disturbance, Improper burner flame pattern

How to Fix / Troubleshooting

Critical safety warning: A flame rollout condition is dangerous and can indicate a cracked heat exchanger or blocked flue. Turn off power and gas immediately. Do not reset rollout switches and continue operation without a professional inspection.

  • 1. Locate rollout switches: Identify the manual reset rollout switches near the burner area on the Thermia furnace. If the red or black reset button has popped, it indicates an overheat/rollout event.
  • 2. Inspect for obvious blockages: Check the burner compartment for soot, debris, or signs of flame escaping the burner area. Inspect the flue pipe for disconnection or blockage.
  • 3. Do not bypass safety devices: Never jumper or bypass rollout switches. This can lead to fire or carbon monoxide poisoning.
  • 4. Professional inspection required: Contact a licensed HVAC technician to inspect the heat exchanger, burners, and venting system. They will determine if the Thermia furnace is safe to operate.
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Repair Difficulty

Professional Required 5/5

Required Part

Flame Rollout Switch
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