Brief video illustrating a malfunctioning furnace sail switch in comparison to a properly functioning one. If your furnace blower activates for approximately 30 seconds, turns off without ignition, or operates inconsistently, there’s a high likelihood of a sail switch problem. While external factors like hair may contribute to its failure and cleaning it off can help, in my specific situation with a furnace used only a handful of times in my 2023 Airstream 27FB, cleaning it did not resolve the issue. Occasionally, it would function briefly, only to fail again.
Swapped mine out with this switch from Amazon.
Sail Switch 2 Pack – $7.99 — https://amzn.to/47B777H
Fits many Dometic RV furnaces
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