Results 1 to 5 of 5

Thread: TXV valve

  1. 06-18-2011, 07:01 PM #1
    captain71
    captain71 is offline Regular Guest
    Join Date
    Jun 2011
    Location
    Blue grass KY.
    Posts
    17
    Post Likes

    TXV valve

    I work for a hvac company. I just started running around on services calls I wanted to know if anyone have been having problems with new units with the txv valves? We are having lot of problems with new units.
    Secondly. How is the best way to diagnose it? hour service technician sometimes not sure if its the reversing valve or the txv how is the proper way to trouble shoot it.
    3rd. If you over heat the bulb while welding the copper on a new unit would that effect the txv valve later.
    Thanks for any info.
    Reply With Quote Reply With Quote
  2. 06-18-2011, 07:49 PM #2
    Shophound's Avatar
    Shophound
    Shophound is offline Professional Member*
    Join Date
    Aug 2003
    Location
    Fort Worth, TX
    Posts
    11,791
    Post Likes
    Quote Originally Posted by captain71 View Post
    If you over heat the bulb while welding the copper on a new unit would that effect the txv valve later.
    Yes, it can. Same if you overheat the valve itself while brazing it in.
    Building Physics Rule #1: Hot flows to cold.


    Building Physics Rule #2:     Higher air pressure moves toward lower air pressure


    Building Physics Rule #3:     Higher moisture concentration moves toward lower moisture concentration.
    Reply With Quote Reply With Quote
  3. 06-18-2011, 07:56 PM #3
    dandyme
    dandyme is offline Professional Member*
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,695
    Post Likes
    Quote Originally Posted by captain71 View Post
    I work for a hvac company. I just started running around on services calls I wanted to know if anyone have been having problems with new units with the txv valves? We are having lot of problems with new units.
    Secondly. How is the best way to diagnose it? hour service technician sometimes not sure if its the reversing valve or the txv how is the proper way to trouble shoot it.
    3rd. If you over heat the bulb while welding the copper on a new unit would that effect the txv valve later.
    Thanks for any info.
    if you read the rules, you know that #2 will not be answered
    It`s better to be silent and thought the fool; than speak and remove all doubt.
    Reply With Quote Reply With Quote
  4. 06-18-2011, 08:38 PM #4
    timebuilder's Avatar
    timebuilder
    timebuilder is offline AOP Committee/Professional Member*
    Join Date
    Nov 2006
    Location
    Southeastern Pa
    Posts
    28,088
    Post Likes
    That means getting your post count up and applying for Pro membership, so you can ask in the Pro section.
    [Avatar photo from a Florida training accident. Everyone walked away.]
    2 Tim 3:16-17

    RSES CMS, HVAC Electrical Specialist
    Member, IAEI

    AOP Forum Rules:






    Reply With Quote Reply With Quote
  5. 06-18-2011, 09:51 PM #5
    captain71
    captain71 is offline Regular Guest
    Join Date
    Jun 2011
    Location
    Blue grass KY.
    Posts
    17
    Post Likes
    Thread Starter

    Thumbs up

    Quote Originally Posted by dandyme View Post
    if you read the rules, you know that #2 will not be answered
    Gotcha
    Reply With Quote Reply With Quote
« Previous Thread | Next Thread »

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  

Forum Rules
Contracting Business

Related Forums

Plumbing Talks | Contractor MagazineThe place where Electrical professionals meet.
HPAC Engineering