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Universal flame rollout safety switch for gas furnaces. Detects if flames are rolling out of the combustion chamber — a dangerous condition indicating a cracked heat exchanger, blocked flue, or other serious issue.
⚠️ Important: A tripped rollout switch means something is seriously wrong. Don't just reset it — investigate the cause (blocked flue, cracked heat exchanger) before operating the furnace.
Install difficulty: 2/5 — Power off, disconnect 2 wires, unclip, swap. 10 min.