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  1. #1

    Blower Motor Problem?

    Hi all. I have an A/C unit that seems to work fine when initially turned on, but after a few hours of continuous use (I would say about 5 or 6, the blower will turn off, while the outside unit stays on (to clarify, this happens when, according to the thermostat, it should still be on).

    If I turn the whole thing off and then turn it back on within the next few minutes, the blower does not turn on. If; however, I give it a rest of 30 to 60 minutes, it turns back on as normal.

    I know nothing about A/C, but my thought was that the motor on the blower is overheating and shutting itself off. Is this the probably cause? Is there a chance that it is a thermostat problem?

    Thanks all.

  2. #2
    Join Date
    Aug 2012
    Location
    North Dakota
    Posts
    518
    check the air filter

  3. #3
    Thanks for the reply. We replaced the filter a few months ago. I just went to check it and it looks very clean (suspiciously clean?).

  4. #4
    Join Date
    May 2008
    Location
    Missouri
    Posts
    3,424
    Make sure you are not using a 1" thick pleated air filter! If you are, throw it away, and put in a simple and cheap filter (NOT PLEATED). See if this helps.

  5. #5
    Join Date
    Jan 2010
    Location
    Central Texas
    Posts
    156
    Sounds like the motor bearings are worn, or the Capacitor is going bad.

    Time to call in a profesional.

  6. #6
    Join Date
    Aug 2012
    Location
    North Dakota
    Posts
    518
    I allways tell my customers to change the air filter the 1st day of each month and only use the 50 cent filters from the hardware (less restriction and there not hard to throw away) even had some who vacuumed the 3m filters to save a buck

  7. #7
    Join Date
    Aug 2011
    Location
    Natchitoches, Louisiana, United States
    Posts
    14
    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread.

    You can find the rules for posting and qualifications here.

    Additional infractions may result in loss of posting privileges.
    Last edited by jpsmith1cm; 04-19-2013 at 07:08 PM. Reason: Non AOP Pro Member

  8. #8
    Quote Originally Posted by mechanical'al View Post
    I allways tell my customers to change the air filter the 1st day of each month and only use the 50 cent filters from the hardware (less restriction and there not hard to throw away) even had some who vacuumed the 3m filters to save a buck
    We go the cheap filter route, and try to replace often (when we remember). Since my last post, I remembered that we replaced over the President's Day weekend, so it has been about 2 months, and, as I said, it looks very clean (we are in the south, and this is our upstairs unit, so there has been very little use over the last two months until we turned on the A/C last week).

    Quote Originally Posted by LukeG View Post
    How old is the system.
    About 14 years

    Quote Originally Posted by sgraefe View Post
    Sounds like the motor bearings are worn, or the Capacitor is going bad.

    Time to call in a profesional.
    That's what it sounds like. Anyone know a good pro in Charlotte, NC? Thanks everyone for the replies.

  9. #9
    This is the Ask Our Pro's forum. In order to post a response here, you must have verified qualifications and have been approved by the AOP Committee. You may ask a question by starting a new thread.

    You can find the rules for posting and qualifications here.

    Additional infractions may result in loss of posting privileges.
    Last edited by jpsmith1cm; 04-19-2013 at 07:09 PM. Reason: Non AOP Pro Member

  10. #10
    Join Date
    May 2009
    Location
    Savannah, Ga/H.H. Island, S.C.
    Posts
    1,403
    Your system may actually be freezing up. Once frozen, you won't feel anymore air out of the vents,

    It takes several hours for a coil to completely freeze up. Then once the system is off and thawed, you will feel air once again.

    A number of things can cause an evaporator to freeze.

    Regardless - you need a professional to come take a look. This is not a DIY site.

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