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    Robman721's Avatar
    Robman721 Posts: 11, Reputation: 1
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    #1

    Dec 10, 2007, 10:07 PM
    Soon as fan starts up the flame goes out
    When I start my furnace the flame starts and than the fan will come on and the flame will go out and it will continue doing this until I shut it off. And some times the fan will be stuck on until I shut it off directly from the power switch, also there is a blinking red light on the furnace . Any idea what could be causing this?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
    		  
    #2

    Dec 11, 2007, 04:44 AM
    How many blinks on the lites and brand and model of furnace?
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    Robman721 Posts: 11, Reputation: 1
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    #3

    Dec 11, 2007, 08:00 AM
    I have an American Standard model #HA03236D175B160573 and the red light is constantly blinking while the heat is on.
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
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    #4

    Dec 11, 2007, 09:11 AM
    Continuous blink =
    False Flame or Gas Valve Relay Shorted
    Robman721's Avatar
    Robman721 Posts: 11, Reputation: 1
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    #5

    Dec 11, 2007, 09:18 AM
    OK thanks a lot for the reply
    Robman721's Avatar
    Robman721 Posts: 11, Reputation: 1
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    #6

    Dec 11, 2007, 12:28 PM
    You have any idea on how I could fix that?
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
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    #7

    Dec 11, 2007, 12:37 PM
    Try cleaning the flame sensor with a bit of steel wool or sand paper.
    Robman721's Avatar
    Robman721 Posts: 11, Reputation: 1
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    #8

    Dec 11, 2007, 12:48 PM
    Thanks a lot ill try it and let you know how it goes.
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    Robman721 Posts: 11, Reputation: 1
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    #9

    Dec 11, 2007, 01:21 PM
    Well I used sand paper on the sensor and hooked it back up and the red light is still flashing and the heat went on and suddenly went off again. Any other ideas as to why the light would be flashing red and heat still not staying on?
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