Gibson Flame Rollout or Safety Trip

Furnace starts then shuts off within a few seconds, repeating several times

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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

Blocked heat exchanger or flue, Cracked heat exchanger causing improper flame pattern, Tripped rollout switch, Blocked burner compartment on Gibson furnace

How to Fix / Troubleshooting

Safety first: Flame rollout is dangerous and can lead to carbon monoxide exposure or fire. Turn off gas and power immediately.

User-level action:

  • Do not reset repeatedly: If a rollout switch has tripped, do not keep resetting it. This indicates a serious combustion problem.
  • Check for obvious blockages: Ensure the flue outlet is not blocked by debris or nests.

Heat exchanger and rollout issues must be inspected and repaired by a licensed HVAC technician. Do not operate the furnace until it has been checked.

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Repair Difficulty

Professional Required 5/5

Required Part

Flame Rollout Switch
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