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    johnmr12's Avatar
    johnmr12 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Dec 3, 2014, 10:18 AM
    Propane furnace question
    I have a payne propane furnace, model PG9MAA. It is about 15 years old. I am having symptoms that point to a dirty or defective flame sensor. All of the videos that I see online about cleaning the sensor show an easily accessible sensor. Mine is behind the burners, and there is a large pvc pipe in the way. The pipe goes to the roof of the house. I can get to the white wire connector at the base of the burner, but I can't get the unit out to clean it. Has anyone ever run into this before?
    ma0641's Avatar
    ma0641 Posts: 15,675, Reputation: 1012
    Uber Member
    		  
    #2

    Dec 3, 2014, 11:46 AM
    Condensing furnace? 90% or higher? Smart Valve? Those are inside a sealed box but many run on 120 VAC, not 24 VAC. Check your model online to check it out.
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