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    mustang11's Avatar
    mustang11 Posts: 2, Reputation: 1
    New Member

    Dec 30, 2006, 08:41 AM
    Trane heating and air
    Sometimes all 5 burners will light and heat will come on sometimes they won't light and heat will not come on
    labman's Avatar
    labman Posts: 10,580, Reputation: 551
    Uber Member

    Dec 31, 2006, 01:02 PM
    Is your furnace a newer one with a forced draft and control board? If so, it will not proceed to ignition and the gas valve opening until the pressure switch signals the board the draft blower is running. Check the blower and the pressure switch.

    If the gas comes on, and goes off in a few seconds, it is the flame detector.

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