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    eudaemonic's Avatar
    eudaemonic Posts: 3, Reputation: 1
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    #1

    Oct 3, 2010, 01:18 AM
    Furnace ignites but fan won't come on. Burner stays lit making furnace HOT.
    Baltar's Avatar
    Baltar Posts: 7, Reputation: 2
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    #2

    Oct 3, 2010, 11:19 AM
    Does the motor get hot? Try spinning it by hand, if it is seized up then you need a new one. Otherwise you have to check for power going to the motor. If none then you have to find out why.
    eudaemonic's Avatar
    eudaemonic Posts: 3, Reputation: 1
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    #3

    Oct 4, 2010, 04:27 AM
    Thanks for your fast reply, Baltar!

    I've had some time to learn and troubleshoot, so now my question has changed.

    I've tested the fan, fan switch, upper & lower switches and they test good. (I tested with a lighter and a continuity meter)

    My pilot lights and stays lit, when I turn up the thermostat the burner lights.

    The fire coming from the burner is not as big as I remember - nor does it make as loud of a "whoosh" sound - and its yellow flame. Isn't it supposed to be a blue flame? I'm thinking that it's not getting hot enough to trip the fan & lower limit switch.
    eudaemonic's Avatar
    eudaemonic Posts: 3, Reputation: 1
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    #4

    Oct 4, 2010, 08:20 AM
    Wow! I fixed it!

    I figured the air/fuel mix was off, so I checked the air return, but it was free from obstruction. Then I finally got the nerve to take the regulator out to see if the burner tube was obstructed, but it was fine as well. I almost gave up and called a professional, but then on a whim I took a toothpick and stuck it in the regulators opening that the gas comes out of to flow through the burner. I fished out a spider nest! Now the flame is huge and blue and I'm already warm!

    I have a fear of gas lines - when I was a child I was close by when a building exploded from a gas leak. This is a personal triumph, my wife can be proud!
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