Page 1 of 2 12 LastLast
Results 1 to 13 of 25
  1. #1

    A/C tripping breaker during afternoons

    I'm having an issue with my upstairs condenser unit tripping the breaker. It is a ~12 yr old York HLRA048S06D 4-ton 10 seer (?) unit. A quick history of this summer's A/C woes:

    1) A couple months ago, the condenser unit stopped working at random intervals (condenser fan and compressor off, internal fan on, no breakers tripped). Compressor sometimes made squealing sound with the fan not turning. A/C tech couldn't diagnose at first, but then was able to determine that the capacitator was bad, which he replaced. A/C started to work normal, until...

    2) A week after, the A/C started failing in the afternoons, 3-6pm at the hottest periods of the day. Internal fan runs as before, condenser fan continues to run but compressor shuts down for a couple hours, before turning back on and cooling normally. This continues for a few weeks, I didn't bother to call another tech as this seemed liveable.

    3) Yesterday, the condenser unit started to trip the breaker. After resetting, it happened two more times, and started to run normal after 8pm.

    It may seem obvious, but does this mean I'm having a compressor issue, or an electrical? I have already replaced the compressor in my downstairs unit this summer, and it seems to still follow in the path of afternoon shutoffs, so I'm thinking the compressor was weakened by the fan issues earlier, and now is failing. Anything I should point the tech to when they come out?

    Thanks!

    In case you're interested, previous threads:
    Initial issue:
    http://hvac-talk.com/vbb/showthread....s-off-randomly
    Second issue (Afternoon cooling)
    http://hvac-talk.com/vbb/showthread....ght=johnnyma45

  2. #2
    Join Date
    Apr 2011
    Location
    michigan
    Posts
    168
    Has the condensor been cleaned lately?

  3. #3
    I rinsed out the condenser coils a couple weeks ago, no noticeable effect, otherwise no.

  4. #4
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    5,659
    Might need a good cleaning by a tech. Have them come out in the afternoon and check head pressure and amp draw

  5. #5
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    5,659
    Quote Originally Posted by jtrammel View Post
    Might need a good cleaning by a tech. Have them come out in the afternoon and check head pressure and amp draw
    It may save you a costly repair of compressor

  6. #6
    Quote Originally Posted by jtrammel View Post
    It may save you a costly repair of compressor
    Thanks, will look into that...I have a tech coming out tomorrow through my home warranty. At this point, I almost want to replace the compressor, lest it continue to fail. Last night it failed overnight for the first time, rather than just during the hottest parts of the afternoon...terrible night's sleep.

  7. #7
    Join Date
    Mar 2009
    Location
    Mount Holly, NC
    Posts
    2,713
    are you certain the tech installed the correct capacitor?
    did they verify charge/subcool/superheat?
    you stated it was not cleaned, this alone could cause the tripping.
    The TRUE highest cost system is the system not installed properly...
    The three big summer hearththrobs...
    Mel Gibson
    Dwane Johnson
    The A/C repairman

  8. #8
    Quote Originally Posted by vstech View Post
    are you certain the tech installed the correct capacitor?
    did they verify charge/subcool/superheat?
    you stated it was not cleaned, this alone could cause the tripping.
    No to the above...not sure how to verify charge. And not sure if the tech installed correct capacitor...I will have him check tomorrow.

  9. #9
    Join Date
    Oct 2010
    Location
    Anderson, South Carolina, United States
    Posts
    5,659
    Home warranty companies generally use cheap unskilled hvac techs.

  10. #10
    Quote Originally Posted by jtrammel View Post
    Home warranty companies generally use cheap unskilled hvac techs.
    ...that sucks. I figured if they were licensed that they were competent and could diagnose issues.

  11. #11
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    Quote Originally Posted by Johnnyma45 View Post
    ...that sucks. I figured if they were licensed that they were competent and could diagnose issues.
    No such requirement. Their goal is to band-aide the problem and spend as little as possible to get you to the end of the warranty period then cut your loose. IF their repair is substandard and costs you twice as much to fix two years after the warranty expries.... that's not their problem. Remember, this is a product/service where it's primary pruchse is to provide a seller with a piece of paper that instills confidence on a buyer, and the buyer gets a piece of paper that suposedly worth something at closing.

    Personally, I would rather get a credit from a buyer equal to the home warranty price, have the buyer simply fix any known problems and buy a property "as-is" and accept it as part of the price of home ownership.

    Your experience is all too common and tends to be hte norm rather than an exception.

  12. #12
    Quote Originally Posted by motoguy128 View Post
    No such requirement. Their goal is to band-aide the problem and spend as little as possible to get you to the end of the warranty period then cut your loose. IF their repair is substandard and costs you twice as much to fix two years after the warranty expries.... that's not their problem. Remember, this is a product/service where it's primary pruchse is to provide a seller with a piece of paper that instills confidence on a buyer, and the buyer gets a piece of paper that suposedly worth something at closing.

    Personally, I would rather get a credit from a buyer equal to the home warranty price, have the buyer simply fix any known problems and buy a property "as-is" and accept it as part of the price of home ownership.

    Your experience is all too common and tends to be hte norm rather than an exception.
    Thanks for the insight. We essentially had the previous owner last year fix anything we could find, and the warranty was provided "free" aka built into the sale price. We were able to get the downstairs A/C compressor replaced with the bulk of it covered by the home warranty, so we figured it was a decent investment. Gives me some food for thought though.

    Regarding the capacitor, I had figured that since it restored the fan operation it was ok. Making a list to address with the tech tomorrow.

  13. #13
    Join Date
    Mar 2009
    Location
    Mount Holly, NC
    Posts
    2,713
    Quote Originally Posted by Johnnyma45 View Post
    Thanks for the insight.

    Regarding the capacitor, I had figured that since it restored the fan operation it was ok. Making a list to address with the tech tomorrow.
    not a valid assumption. two different values, between the fan and the compressor. and the fan is pretty much a standard, the compressor has to be exact.
    The TRUE highest cost system is the system not installed properly...
    The three big summer hearththrobs...
    Mel Gibson
    Dwane Johnson
    The A/C repairman

Page 1 of 2 12 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event