Staff Answer
Sep 28, 2026 - 07:38 AM
To test the limit switch, disconnect it and check it with a meter. It should read closed (continuity) when cool. If it's been cutting out on LP since new, with 2 flashes, look at the gas side: LP pressure, a clean flue with the baffle in place, the burner position, and wind through the vents. Those cause drop-outs after a few hours more often than the board does.
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