Results 1 to 5 of 5
  1. #1
    Join Date
    Aug 2010
    Location
    bethlehem ga.
    Posts
    1

    Is this a bad txv

    I was on heat pump low side pressure 25psi high side 200 psi, I tried to add referigant, the pressures would not move at all, oa 95 ia 83, compressor would kick out every now and then on thermal overload, customer had put a box fan on comperssor and it would not kick off, HELP

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,743
    Would need to know all the readings to know if it was a bad TXV or not.

    get your post count up to 15 and apply for pro membership. Once accepted, you can ask questions in the pro forums. And get the aid of many pros.
    Contractor locator map

    How-to-apply-for-Professional

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

  3. #3
    Join Date
    Dec 2007
    Location
    morrison, illinois
    Posts
    111
    if system has a txv, chances are thats your problem. had the same situation last week on a ac system. suction was 40, head was 225. pulled apart and evap coil was half frosted up, replaced txv and all was fine

  4. #4
    Join Date
    Jun 2005
    Location
    SW Wisconsin
    Posts
    4,888
    A restriction in the liquid line filter-drier within the condenser would also cause it to pump-down...
    Do not condemn the TXV without further tests.

    Compressor needs the cold low-side suction vapor to keep it from overheating.
    Last edited by udarrell; 08-05-2011 at 10:13 PM. Reason: ?Clarity...

  5. #5
    Join Date
    Dec 2008
    Location
    North Carolina
    Posts
    2,848
    What happened when you removed the bulb...if you could (and that has it's tell-tale.)

    I will agree, in SE we have been told by manufactures to expect, and we do see bad TXV..in this long term heat...you will see it and most cannot diagonse.

    But really...you need to know to how to make it not part of the cooling circuit. In essence, have it pin pointed.

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