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  1. #14
    Originally posted by beenthere
    Did it do it while the tech was there?

    If it did, and he can't find the cause, and just wants to start replacing parts, then you want another tech.
    It didn't act up the first time he was out, but it did today. It was in fact the relay. The fan was getting power when it was set to off, and was tripping the overload when set to on. Its been running fine all day and the house is a comfortable 76.

  2. #15

    Shaded or PSC

    If it's very old it may have a shaded pole blower drive in which case this suggestion is mute. If it has been replaced or has a PSC motor a failing run capacitor will cause the blower to cycle much like your description.

  3. #16
    Join Date
    Aug 2005
    Location
    SW Arkansas
    Posts
    3
    Recently saw this problem in an apartment unit. Found a loose connection in the fan relay. Does not mean it will fix your problem but it worked on mine.

  4. #17
    Originally posted by sparky31
    Recently saw this problem in an apartment unit. Found a loose connection in the fan relay. Does not mean it will fix your problem but it worked on mine.
    That's exactly what it was. They didn't replace the relay after all.

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