Ac Runs and Stops and Runs Again

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    coloradojohn's Avatar

    coloradojohn Posts: 2, Reputation: 1

    New Member

    Jul 28, 2008, 09:43 AM

    With AC on blower fan runs then stops

    My trouble is that the air conditioning unit (Trane) runs fine however when the blower turns on it will run for 25-30 seconds and so turns off for threescore-90 secords before turning on again. If I run the furnace the blower operates as expected. One service company has indicated that it sounds like a winding on the blower fan motor has gone bad causing this intermitten cycling to occur and suggest replacing the motor. Has anyone had a like problem or heard of something similar this that could confirm their findings or dispute them. Thank you for your assist!

    wmproop's Avatar

    wmproop Posts: 3,749, Reputation: 91

    Ultra Member

    Jul 28, 2008, ten:xxx AM

    Check the capiciter,, they but cost a few dollars much less than buying a new motor,if the winding is bad in motor I don`t recall it would run at all,not fifty-fifty a little bit.. if yous don`t take the means to check capiciter take it to a electric shop and take it tested

    hvac1000's Avatar

    hvac1000 Posts: 14,540, Reputation: 435

    Heating & Air Workout Expert

    Jul 28, 2008, xi:00 AM

    My problem is that the air-conditioning unit (Trane) runs fine however when the blower turns on it will run for 25-30 seconds and and so turns off for 60-90 secords before turning on again. If I run the furnace the blower operates equally expected

    If you run the furnace and the blower operates normally it is probably not the motor or capacitor But something in the A/C circuit. It could be the control board or your thermostst.

    What is the model number and brand of your thermostat?

    coloradojohn's Avatar

    coloradojohn Posts: 2, Reputation: one

    New Fellow member

    Jul 29, 2008, 07:47 PM

    Quote Originally Posted by hvac1000

    My trouble is that the air conditioning unit (Trane) runs fine however when the blower turns on it will run for 25-30 seconds and so turns off for 60-90 secords before turning on once more. If I run the furnace the blower operates as expected

    If you run the furnace and the blower operates ordinarily it is probably not the motor or capacitor Just something in the A/C circuit. It could be the control board or your thermostst.

    What is the model number and brand of your thermostat?

    wmproop'south - it's a Honeywell model tb112d1005 or pf1a, sorry merely the prior owner installed and there are no obviouse markings on the unit. Give thanks for your help!

    hvac1000's Avatar

    hvac1000 Posts: 14,540, Reputation: 435

    Heating & Ac Expert

    Jul 29, 2008, 08:42 PM

    Sorry no numbers in Honeywell factory list matches the numbers you lot provided.





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