Results 1 to 13 of 13
  1. #1
    Join Date
    May 2008
    Posts
    6

    Heat pump not working properly

    The heat pump in our home is not working properly. We have a relatively up-to-date Lennox condenser unit and a 40 year old GE blower unit. The system is fully charged with freon. When we first turn it on it works fine, but after maybe 1/2 an hour it no longer cools. Also there is no condensation coming from the unit, whereas it normally kicks out about 1/2 a gallon of water on a hot day.


    1. What is likely the problem?

    2. How do I proceed?

    Thanks!

    Donald

  2. #2
    Join Date
    Jun 2003
    Location
    Hell Hole Swamp
    Posts
    4,180
    No way to know what the problem might be with the information provided.

    You should call a local HVAC company to come out and check it for you.

  3. #3
    Join Date
    May 2000
    Location
    Colorado flatland native
    Posts
    15,067
    Quote Originally Posted by WebberP View Post

    1. What is likely the problem?

    2. How do I proceed?

    Thanks!

    Donald

    Proceed directly to the yellow pages and call a local contractor. Then come back and tell us what he found and we all can learn something.
    My doctor gave me six months to live, but when I couldn't pay the bill he gave me six months more.
    Walter Matthau

  4. #4
    Join Date
    May 2000
    Location
    Colorado flatland native
    Posts
    15,067
    Call a Lennox dealer, and get a price to change that blower unit too.
    My doctor gave me six months to live, but when I couldn't pay the bill he gave me six months more.
    Walter Matthau

  5. #5
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,903
    The evaporator coil could be freezing up. (That is, if airflow drops dramatically after a while)

    Change the filter and open all registers. If problem persists, have a technician clean the system and check the charge.

  6. #6
    Join Date
    May 2008
    Posts
    6
    Thanks for the responses.

    A couple more pieces of information.

    I did call an HVAC guy out to come and look. He says there is nothing wrong that he can find. He did check the freon it's fully charged. The filter is new. Airflow does not seem to drop. But the unit doesn't properly cool after awhile and again, no water condensation at all. If I turn the unit off for 1/2 an hour and then turn it back on, then it will work again for a bit.

    I know it's difficult to diagnose something you can't see. I'm looking more for likely candidates.

    Thanks so much all.

    Donald

  7. #7
    Join Date
    Mar 2006
    Location
    DFW
    Posts
    3,967
    Quote Originally Posted by WebberP View Post
    I'm looking more for likely candidates.
    Maybe its the POS 40 year old blower you got. Just a wild guess though.

  8. #8
    Join Date
    Jun 2004
    Location
    Howell, Michigan
    Posts
    16,173
    This is not a DIY site. I know you are not at this point asking for DIY help, but we also are not able to be your diagnostician here on the internet.

    You are going to have to rely on the technician at your home.

    Also, moving to residential.

  9. #9
    Join Date
    Jun 2001
    Location
    Louisville, KY
    Posts
    12,153
    Quote Originally Posted by HeyBob View Post
    diagnostician
    ...and I thought I was just a simple Indoor Environmental Technician.

    Perhaps you should have read the instructions before calling.

  10. #10
    Join Date
    May 2008
    Posts
    6
    Ok, clearly I've gotten whatever help I'm going to.

    A couple of things:

    Roger, something that has worked for 40 years is hardly a POS. I doubt anything you install today lasts 1/2 that long.

    Bob, I was not asking for DIY help, nor would I here. I read and understood the rules. It's inappropriate to assume that what I'm after. What I wanted help with was so that I could understand the problem better, help direct a tech, and not have another wasted service call. But obviously no more help is forthcoming here, so I'll move on.

    Thanks everyone for the information. I appreciate the effort.

    Donald

  11. #11
    Join Date
    Dec 2004
    Posts
    200
    After the half hour when it stops cooling check airflow at your registers and go out side to see if the outdoor unit is running.

  12. #12
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,770
    You are correct. That 40 year old GE air handler is an work horse.

    Although I'm sure you saw a reduction in your electric bill when you got the new condenser.
    Had you also had the air handler changed out, it would have lowered it more.

    If the tech won't stay and check the units operation for 30 minutes.
    Although not normally a good idea. Call for them to come back out, and give youo an approxiamate time of arrival. The turn your A.C on 30 minutes before they get there so they can see it in its failed mode.


    Good Luck.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  13. #13
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,903
    When the unit stops cooling, check to see if the compressor is running.

    Something could be tripping out on overload. (High compressor amp draw, high/low pressure, or otherwise)

    Something as simple as a clogged condenser coil could cause the problem you're having.

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