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  1. #1
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    KM1300. Low side Low

    Guess what , its not making ice

    Usually its float sw, water inlet, water pump, filters , dump valve , you know something simple, and your done.

    Not this time

    Hooked up low side its at 15psi (-20) after 1 min freezing time

    Im like, wow thats some cold return !

    But no , that wont fly

    Its 9pm , im tired wanna go home, figure theres a leak somewheres on roof at cond coil maybe , so let me dump in a lb 404 and it will be fine.

    Nope

    Didnt move , Sits at 15 psi

    Feel tube bends , the first bend is cold but not that cold , from there tubes feel room temp

    Hell with it i went home

    Where to begin after i return ....

  2. #2
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    Aug 2002
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    Southold, NY
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    Pull charge and weigh it.
    Bad x- valve (s)

  3. #3
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    Sep 2002
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    Thread Starter
    wellllllllll .... I sorta cant pull the charge right now because both my cylinders have 22 in them

    But I did some good ol backyard checkin today

    5 min into freeze I have 175 high ( hooked to port on receiver ) Cond fans are on roof , and liquid line temp commin down is 127 deg F , receiver feels Hot , drier feels Hot

    WTH ..... 175 psi equals 82 F

    How is my refrig picking up heat going thru cond ???? Is the unit soooo low on gas that I'm actually getting discharge vapor ??

    Suction is 27 psi ( -5 F ) and line temp commin out evap is 92 F

    WTH ??

    Pump down unit by unhooking the liq line sol power, quickly goes into vacuum , torch receiver , no fluid in there

    It has 2 TXV's , and both have sorta hot lines going in , room temp going out into evap

    Soooooo I'm thinking its wayyy low on gas .... maybe

    Only odd thing I see it has the original tiny little drier , like a 052 , and someone added a 083 after that

  4. #4
    Join Date
    Jan 2016
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    Sounds low to me.

    I'm guessing there's a headmaster bypassing the condenser all together and that's where the heat is coming from.

    Time to get another recovery tank and pull the charge and weigh it.

  5. Likes Darryl Moore liked this post
  6. #5
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    Thread Starter
    holds 11 lbs

    Hope the leak is along the lineset

    THe Latinos are gonna whimper a lil bit seeing this bill

  7. #6
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    Quote Originally Posted by Snapperhead View Post
    holds 11 lbs

    Hope the leak is along the lineset

    THe Latinos are gonna whimper a lil bit seeing this bill
    Bahahahaha too true


    Sent from my iPhone using Tapatalk

  8. #7
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    Aug 2002
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    So officially your saying theirs NO, Zero, Nada refrigerant in there.

  9. #8
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    Nov 2006
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    Get a One Shot recovery tank, stick a stub hose with a shutoff valve on it. Don't close the tank valve you are using. DO close the valve on the other end of the tank.

    I'm also thinking the headmaster is bypassing, especially if you have nearly a full charge coming into that tank.
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  10. #9
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    Sep 2002
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    Thread Starter
    Make that 3 driers, theres a 163 on the roof , and its leaking at the nut

  11. #10
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    Thread Starter
    Quote Originally Posted by pecmsg View Post
    So officially your saying theirs NO, Zero, Nada refrigerant in there.
    think i oughtta weigh it to be sure ?

  12. #11
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    Thread Starter
    Quote Originally Posted by timebuilder View Post
    Get a One Shot recovery tank, stick a stub hose with a shutoff valve on it. Don't close the tank valve you are using. DO close the valve on the other end of the tank.
    thats cheating mister ....

  13. #12
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    Thread Starter
    so I eliminated the little drier , and the roof drier , left the 083 in there , filled with 9 lbs because that's all I had , and shes making ice

  14. #13
    Join Date
    Aug 2001
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    Be a pro. Go back recover refrig replace drier and weigh in gas. Anything less is wrong.

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