Question about Dayton Gas Furnace Heater

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Dayton blower fan repeatedly kicks on and off

Hi folks.

I've got a Dayton gas furnace.
Model # FG8D12520MU12A.

The fan kicks on... runs for a bit and then kicks off.
This pattern repeats.

When I run with the heat on, I get a fan-limit switch error code on the
control board.

When I run it in fan-only mode, the fan kicks on for about a minute or lses, then keeps cycling... kicks off ..... kicks on for a few seconds.... kicks off...

Any suggestions regarding this problem?

thanks in advance

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  • Anonymous Jan 07, 2009

    My Dayton furnace fan will constantly kick on and off on and off. on for 10 off for 5 on for 10 off for 5.

  • sasyko Jan 18, 2009

    where is the fan limit switch? mine is doing the same thing..

  • Anonymous Jan 19, 2009

    I have the exact same problem on a Dayton model 3E837 but can't find a replacement part for the limit switch

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  • Dayton Master
  • 2,046 Answers

Chech the air filter is clean and the fan limit switch look to change fan limit

Posted on Dec 11, 2008

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