Yes sir! The blower was, just a moment ago, 'thumping" (trying to turn on or off, I believe) so I whacked the Clayton furnace with a good left (I'm getting pissed). The result was the blower (on auto, of course) suddenly turned off, however, manual worked fine. I've reset it to auto and is working as it should. My thinking? A loose or frayed wire may be involved here. The new FLS has been sent, so I will hook it up and hope for the best... if not, I call back the hvac guy with the idea to check the wiring in that thing on the back of the Clayton plenum, which I know nothing about. Any additional ideas are welcome and thank you for your interest. I'LL BE BAAAACCCCKKKYou could try jumping out the FLS...that would bypass it, but not sure what will be learned by doing this since the FLS has been replaced once already, with the same results...and pushing the manual switch kinda takes the thermal switch out of the loop anyways....I do agree though, this is a pretty crazy one!
Agree...it appears to be 125* off, 140* on? Too tight.I would separate the off and on temperature more on the fls
Has to be the oil blowing through the Clayton, right @Alk ?Does the heat of the oil go through the clayton, or the heat from the clayton go through the oil?
Exactly. Those Honeywell's use push type terminals, could have a bad connection there.Also while the system is running, wiggle the wires on the fls and see if anything is loose. Just don't touch anything shiny!
OK, have done my homework. Contrary to what I was thinking the Oil does have it's own shut off switch and is not controlled by the FLS on the Clayton, which is why the oil works fine. I've wiggled the manual/auto button on the FLS and the blower responds erratically, proving that the FLs (2nd one) is faulty, imo of course. The new Honeywell FLS still hasn't got here...can't wait!And if that's the case, then there probably is only one FLS, and it makes absolutely ZERO sense that the blower would work fine on oil, but not wood...
Won't shut off? Like when the fire is out and the furnace is cold?wouldn't hardly shut off. At least it wasn't shorting out and causing the blower to rapidly turn off and on and bang around like the other two switches did. I watched the dial closely and discovered that it would warm up smoothly but would get 'stuck' when cooling down, thus often wouldn't shut off the fan.