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    Lynch6's Avatar
    Lynch6 Posts: 1, Reputation: 1
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    #1

    Dec 19, 2010, 03:09 PM
    Tempstar DC90 will not relight?
    My Tempstar DC90 furnace will not relight after shutting off. Inside temp raises furnace shuts off. But when temp drops the furnace will not relight but the blower/fan will start up. I have shut off thermostat and furnace and restarted.It will light and run until temp set point. Board was replaced a couple months ago. I have been told it could be gas valve. Any suggestions?
    T-Top's Avatar
    T-Top Posts: 1,871, Reputation: 100
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    #2

    Dec 19, 2010, 05:01 PM
    True it can be a gsa valve going bad but that's only a geuss. Have the burners and flame sensor been cleaned? Was the gas pressure checked? I know it sounds like a lot of question but it's a place to start.
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