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  1. #1
    Join Date
    Jun 2008
    Location
    Bartlett, TN
    Posts
    108

    I hate warm suction lines

    ok...It seems all I have is Warm suction line problems this summer. Another tech went and serviced/cleaned a unit last Thursday. From what he says when he left pressures were correct and unit was running fine. Customer says later that night it was not cooling and there was not any warm air coming out of condenser. Tech went out of town on vacation and called me to check it out. When I arrived today, pressures were 10 on low side and 150 on high side. Of course suction line dry and warm. I didn't want to just add gas right away so checked capacitor for full charge and checked compressor amps. Both checked out ok. Added gas. Appears unit was completely empty of freon. Got pressures to close to correct readings of 65 and 275 (86 degrees outside). However suction did not get cold. Temp out of vents inside house only coming out at 76 degrees. Evap coils nice and cold but not frosting. Filters clean, a-coil clean, returns not blocked. Is this another restriction problem?
    Why are the guages correct, did I just overcharge system? and if unit was that empty of freon that quick as of Thursday must be a leak in system. Couldn't find leak with leak detector.

  2. #2
    Join Date
    Dec 2002
    Location
    Toledo, Ohio, United States
    Posts
    12,901
    Twilli says what was your super heat?
    No Heat No Cool You need Action Fast

  3. #3
    Join Date
    Mar 2005
    Location
    NC
    Posts
    217
    Odds are there was a leak in system and when your partner charged the system back up it opened the leak worse. If it leaked out, there is a leak there. How warm was it in the house?
    If you can't do it right.....Don't do it!!

  4. #4
    Join Date
    Jun 2008
    Location
    Bartlett, TN
    Posts
    108
    It was 88 in the house.
    According to homeowner, the other guy supposedly did not add any gas to the system.
    He went there for an annual cleaning/servicing, everything supposedly checked out fine, he cleaned unit, and then problems occurred. I have to make assumptions, as I haven't discussed with other tech but just got a quick call from him to check out problem.

    I didn't measure the superheat.

  5. #5
    Join Date
    Jun 2008
    Location
    Bartlett, TN
    Posts
    108
    Goodman, 4-ton- 3 yrs old.

    I've always relied more on the pressures than reading SC SH.
    Guess I need to make SC SH part of routine checks.

  6. #6
    Join Date
    Dec 2007
    Location
    Ohio
    Posts
    2,875
    Quote Originally Posted by kg321 View Post
    Guess I need to make SC SH part of routine checks.
    Yes you do...
    I need a new signature.....

  7. #7
    Join Date
    Dec 2007
    Location
    Ohio
    Posts
    2,875
    Piston or TXV?
    I need a new signature.....

  8. #8
    Join Date
    Nov 2000
    Location
    Eastern PA
    Posts
    68,923
    Quote Originally Posted by kg321 View Post
    Goodman, 4-ton- 3 yrs old.

    I've always relied more on the pressures than reading SC SH.
    Guess I need to make SC SH part of routine checks.
    Pressures alone tells us absolutely nothing except that there is something in the system or not.
    Government is a disease...
    ...masquerading as its own cure…
    Ecclesiastes 10:2 NIV


  9. #9
    Join Date
    Jun 2008
    Location
    Bartlett, TN
    Posts
    108
    At 65 on low side, even if still a little undercharged, would'nt suction line be sweating, cool, or something. If I add more gas, the head pressure will continue to go up.

  10. #10
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,704
    Must be a 35 year old unit that you need head pressure that high on an 86° day.

    As above. What was the Sh, and SC.
    What ws the indoor wetbulb.
    Contractor locator map

    How-to-apply-for-Professional

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

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