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    MarkT21's Avatar
    MarkT21 Posts: 1, Reputation: 1
    New Member
     
    #1

    Jan 12, 2013, 02:02 AM
    My rheem furnace flames come on,but about 10 seconds later it goes out
    I replaced a burned honeywell electrical board, a broken ignitor and flame sensor now the flames come on,but they go out right away even before the blewer comes on.
    Any ideas what could be causing this problem?

    Thanks
    hvac1000's Avatar
    hvac1000 Posts: 14,540, Reputation: 435
    Heating & Air Conditioning Expert
     
    #2

    Jan 12, 2013, 04:16 AM
    Flames going on but then off right away is a indication that the flame sensor is dirty. Clean flame sensor with steel wool/brass wool pads or fine sand paper and keep your fingers off the sensor part of it.

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