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Thread: Blower motor not kicking on???

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  1. #1
    DIY Member walds11's Avatar
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    Default Blower motor not kicking on???

    I had my central AC on for most of the week due to the warm weather. It cooled down a bit, so I turned the heat on my thermostat this morning. The furnace kicks on, but then kicks off after about 30 seconds. I hear a click and then nothing. The blower is not turning on. It did that a few times so far this morning. The pilot is on. What's wrong? It was working fine before I turned on the AC earlier in the week. Help!

  2. #2
    DIY Member walds11's Avatar
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    Update: I switched thermostat from auto to fan on and it's working. What now?

  3. #3
    Moderator & Master Plumber hj's Avatar
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    From your description, it appears the fan/limit switch is not working, but there could be other reasons that only proper testing could diagnose.

  4. #4
    Test, Don't Guess! cacher_chick's Avatar
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    On most furnaces made in the last 10-15 years you can remove the front coverto find guidelines for reading the trouble codes from the LEDs on the main circuit board. Since you mentioned pilot light, I am guessing the furnace is older than that.

  5. #5
    DIY Member walds11's Avatar
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    What's it take to fix the fan/limit switch?

    The furnace is about 18-19 years old. I did not mention a pilot light, I mean't there is a flame down there.

    York Model #PUUGD20N10501A, Serial #EGYM089448.

    It's working now. Go figure.

  6. #6
    Moderator & Master Plumber hj's Avatar
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    If the fan/limit switch is defective, you replace it.

  7. #7
    DIY Member walds11's Avatar
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    What's that run, both parts and labor?

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