Question about Goodman GMS90703BXA Heater

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Cycleing hi I have a goodman gmpvo75 it cycles 3to4 times before staying on do you have any ideas. thanks

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  • Anonymous Jan 31, 2009

    I have the same problem but not 100% of the time. Some times it runs fine, sometimes in cycles once, sometimes twice. I was told it could be the board but want to make sure


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I would start with cleaning the flame sensor. It is a metal rod that will be located in the path of the flame. Please let me know if this helps.

Posted on Feb 17, 2009

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Could be flame sensor. I dirty flame sensor will cause this problem. Flame sensor is rod that is in burner, should be able to remove and clean with steel wool or dollar bill. Usually has white film on sensor preventing it from reading flame. Not sure how American Standard is but sensor normally has 1 screw holding into place in burner box. If you can get at it, it is easy to clean.

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In the burner compartment opposite of the ignitor is the flame sensor. seems to be dirty. one screw holds it in. Remove and clean with a wire brush.

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The first thing to look at is the flame sense rod.
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