How do you fix a fan motor that does not shut off at the furance and what do you normally shut the fan limted switch too I know if I go up there and turn fan limted switch it will shut off and the theromstate and fan motor have to be set togather this old unit but heat great beside this problem it is a heil qaucker 1978 unit frunaces model # nhg080cf01

Aat 31 years old I would have it checked out by a pro. Its way past time to make sure the heat chamber is safe and that there are no cracks or rust

Yes I know but the house is old were trying to sell it butto change it I would have to change elec. Box because it is 110 and not 220 but how do you set fan time out switch and does it have to be synceazer with the tremstate

If its gas and needs to be replaced,, the new gas furnaces also run on 110 volts,
It just scares me thinking about people taking such a gamble with their lives when it takes so little to be safe and have it checked out,,

I had 2 family members found passed away because of a bad furnace,, also their 2 kids, 3 and 5 years old

Thxs I know your right ill get some to come if not I mite just do like I did last year and not use it and use kerosen heater again