Lennox G12Qe series 1986... furnace lights and if I wire blower up to constant power will work.. but blows luke warm air out...

Any ideas... blower will not come on unless I hook up constant to it..

Clean your sensor or your pilot is plugged

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Originally Posted by hixton

clean your sensor or your pilot is plugged

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Ok but furnace is working, I mean nice blue flames... problem is heat is going out exhaust.. really warm on flue.. but not on vents into home..

Any ideas...

Have you checked your filter if you set the thermostat to fan on do you feel warm air blowing

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Originally Posted by hixton

have you checked your filter if you set the thermostat to fan on do you feel warm air blowing

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Well filter is removed right now, due to wiring it up...

Would it matter that I replaced the furnace janitrol(downlfow) with an upflow furnace?

Yes the duct system is set backwards and that's not at all recommended

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Originally Posted by hixton

yes the duct system is set backwards and thats not at all recomended

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So how can I fix problem..

I can't afford a new furnace... and need heat bad..

There's not a cheap way to fix it either get all new duct work or a different furnace sorry

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Originally Posted by hixton

theres not a cheap way to fix it either get all new duct work or a different furnace sorry

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Ok I don't think the old janitrol was a down flow.. I mean the cold air was just like the lennox,except the filter was outsie the housing on the bottom right, the plenum was on top, with 6 inch duct for chimney in fron... so I am assuming it was upflow also... blower is on bottom..

So now what do I check for...

Thanks for your help

Do you have the duct work sealed tight or is air blowing out all a round

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Originally Posted by hixton

do you have the duct work sealed tight or is air blowing out all a round

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Not completely sealed..

My return is open on end to basement.. wife said and people at work said suck the air out of basemnt.. I knew better but did what they said.. could this be problem with not hot air?

What about the blowerr.. I don't want it on all the time...

If you set to auto does the blower came on at all or does it run and shut off

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Originally Posted by hixton

if you set to auto does the blower came on at all or does it run and shut off

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Doesn't come on at all.. have waited for over 3-4minutes and nothing... I am thinking cause furnace is not warm enough yet? For it to kick on.. or should it..?

You will get what's call gravity heat because of the basement return air put a filter in if you can that will help a little

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Originally Posted by hixton

do you have the duct work sealed tight or is air blowing out all a round

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Not sealled off and cold air intake sucking air out of basement..

OK on Filter... now what about blower, how can I get it to shutoff by itself... or is not kicking on because of the cold air?

You have been a real help by the way.. ;>)

Take the top door off in the middle of your furnace is a fan switch it might be covered by a silver box or you might have what's called a camstat where you will be able to see the temp settings let me know which one you have

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Originally Posted by hixton

take the top door off in the middle of your furnace is a fan switch it might be covered by a silver box or you might have whats called a camstat where you will be able to see the temp settings let me know which one you have

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I have camstat.. it set between 100-105..

OK does the blower come on and only run for about 30 seconds or is it not coming on at all now

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Originally Posted by hixton

ok does the blower come on and only run for about 30 seconds or is it not coming on at all now

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Only comes on if I wire it hard...

It sounds like the camstat might be bad or the low speed on the blower windings are out you could try switching speeds the red wire is low yellow is medium and black is high try a different speed if that works then low speed is out if not replace the camstat