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EC IL | I "restricted" mine by using better filters and by not changing the filter often enough, TWICE! The second time the high limit was shutting things off (and before I replaced the "faulty" high limit switch again), I tested things more completely and decided to put a cheap probe-style oven thermometer in the ductwork so I could see the plenum temperature any time I walk past it. I documented the temperature with the new filter installed and the temperature at the high limit trip point so I know the bottom and top of the temp range. Edited for readability.
Edited by Deepfreeze 11/13/2024 10:33
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Complicated furnace problem
