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  1. #1
    Join Date
    Dec 2007
    Posts
    49

    chaterring LLS on WIF

    I ran across a small WIF that was only able to get to 20F. Tstat was calling so LLS was open and unit running. Once I got back to the roof the liquid line was making all this chatter. I ran back downstairs. to discover the noise coming from the LLS valve. While energized the coil chattered like heck, stop for a while, then chatter a lil more then stop, etc . Customer said the chattering noise has been happening for sometime off and on.

    Can those plungers get 'stuck' inside the valve? (This unit has had multiple surgeries) OR...Is there such a thing as a weak coil? Yes proper voltage was delivered to coil.

  2. #2
    Join Date
    Sep 2008
    Location
    Cedar Rapids, IA
    Posts
    486
    I carry a permanent magnet made for forcing open a sporlan LLSV. Its a good way to test if the problem is the valve or the coil. Is the coil a 24v one? If so the transformer may be overloaded at times causing the chatter. If its line voltage and as you say you are reading good power w the coil energized I would buy a new LLSV and coil w the understanding from my supplier that I will return one or the other. Then replace the coil first if that does it great. Else pump it down and change the valve.

  3. #3
    Join Date
    Nov 2000
    Location
    Memphis TN USA
    Posts
    6,945
    Where did you get that magnet? I have seen them before. I want to put it on my christmas list. Boss gives us $250 for christmas. I buy 1 bottle of Wellers and spend the rest on tools.
    If the superheat ain't right it ain't charged right.

  4. #4
    Join Date
    Sep 2008
    Location
    Cedar Rapids, IA
    Posts
    486
    Quote Originally Posted by kim View Post
    Where did you get that magnet? I have seen them before. I want to put it on my christmas list. Boss gives us $250 for christmas. I buy 1 bottle of Wellers and spend the rest on tools.
    Johnstone supply sells them. I think most sporlan distributers can get them as well.

  5. #5
    Join Date
    Feb 2008
    Location
    Western NC
    Posts
    2,504
    Quote Originally Posted by bob_scheel View Post
    Johnstone supply sells them. I think most sporlan distributers can get them as well.
    I got mine at CC. Mine is an Emerson I think. Don't use it much but it does come in handy when I need it.
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

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  6. #6
    Join Date
    May 2008
    Location
    S.E.Virginia
    Posts
    87
    CPS makes one. I have used it on Sporlan and Danfoss LLS .....works great Cost about $35.00.

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