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    howardarnold's Avatar
    howardarnold Posts: 1, Reputation: 1
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    #1

    Dec 13, 2008, 05:41 PM
    Armstrong Ultra sx 80, pilot light lit, but burner does not light
    Armstrong Ultra sx 80, pilot light lit, but heater doesn't turn on
    hixton's Avatar
    hixton Posts: 146, Reputation: 5
    Junior Member
    		  
    #2

    Dec 13, 2008, 06:09 PM

    Try cleaning the sensor that's the rod in the flame if that doesn't work you may need a tech to look at it .
    progunr's Avatar
    progunr Posts: 1,971, Reputation: 288
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    #3

    Dec 13, 2008, 06:30 PM

    If it has a thermo-couple, try replacing that, if it does not have one, I have no clue.
    MarkwithaK's Avatar
    MarkwithaK Posts: 955, Reputation: 107
    Senior Member
    		  
    #4

    Dec 13, 2008, 10:50 PM

    Is this a standing pilot?
    If the pilot remains lit then your thermocouple is probably fine. If it were bad then your unit wouldn't hold a pilot. Is the valve in the "ON" position?
    wmproop's Avatar
    wmproop Posts: 3,749, Reputation: 91
    Ultra Member
    		  
    #5

    Dec 13, 2008, 11:01 PM

    Is there power (24 volts) going to the gas valve at the time it should be opening up to send gas to the burners ?
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