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Furnace Blower stops working after 15 minutes

We have a WeatherKing GU-80G-D3 unit. When the unit turns on, everything works fine for about 15 minutes and then the airflow stops throughout the house. This is true for A/C and for heating. Started doing this in September with A/C and we haven't needed heat until recently.

When the unit does start up, I can hear a humming that lasts a long time before the air starts blowing. It sounds like the blower fan is having a hard time getting started. I am assuming our blower fan is having a problem but wondering if replacement is necessary or taking the blower out and cleaning it would solve.

Any help would be appreciated.

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  • ahamil Nov 12, 2008

    the blower stops after a 5 min &hums

  • billy751 Nov 13, 2008

    Thank you.

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Replace the blower motor. Cleaning of the blower and motor will help in the moving of more air but will NOT eliminate the real problem in the motor bearings. Over time the lubrication will dry out and bearing wear results.

Posted on Nov 13, 2008

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