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  1. #1
    Join Date
    Nov 2003
    Posts
    7
    suction pressure 80 head pressure 300.could it be dirty coil or low on freon.

  2. #2
    Join Date
    Mar 2005
    Location
    burlington county n.j.
    Posts
    9,743
    i choose #1

  3. #3
    Join Date
    Mar 2002
    Location
    Northeastern Illinois
    Posts
    611
    Check your filter on your furnace or A/H.
    If it ain't broke don't fix it!!

  4. #4
    Join Date
    Mar 2002
    Location
    Northeastern Illinois
    Posts
    611
    The coil may be dirty or some of your returns blocked or kink in a line or your blower not moving enough air over the coil.The answers go on and on.
    If it ain't broke don't fix it!!

  5. #5
    Join Date
    Feb 2005
    Location
    Central Alabama
    Posts
    466
    Need more info, what is outdoor temp? What is indoor temp? Wetbulb or dry bulb temp on indoor coil?

  6. #6
    Join Date
    Jun 2003
    Location
    Florida
    Posts
    9,548
    Time to pick up that phone.....
    If everything was always done "by the book"....the book would never change.

  7. #7
    Join Date
    Feb 2004
    Posts
    2,597
    low airflow would result in a lower pressure coil.

    without temps. who knows?

    overcharge?

  8. #8
    Join Date
    Mar 2005
    Posts
    65
    need more info.Might actually be not bad if system is old and outside coil is dirty/fins damaged,very hot day.high load inside w/high humidity,undersized ducts.I'm new to this field, but I'm happy to see I'm starting to sound a bit like the old heads here who allways ask for more info,more info,more info...........cool!

  9. #9
    Join Date
    Mar 2005
    Location
    Suppy NC
    Posts
    4,513
    depends on outside temp and age of the unit
    i have seen older units run at 300 to 325 on 95 to 100 degree days. either way it doesnt hurt to have the condenser coil cleaned and the system serviced

  10. #10
    Join Date
    Nov 2003
    Posts
    7
    condenser unit was hit by tree,bend lots fins. unit was dirty too,wash it and the head pressure went down to 250 but suction pressure stay the same at 80.the out side temp was 93 and temp across coil was 18.

  11. #11
    Join Date
    Jun 2003
    Location
    Jacksonville, FL.
    Posts
    4,313

    Okay....

    What's the indoor temp? What's the SC/SH?




































    Nevermind. Call a pro.

  12. #12
    Join Date
    Oct 2003
    Location
    west chester pa
    Posts
    343
    sounds fine 80 250 18 degree split. suction may be slightly high but with the b.s info you gave sounds fine.

  13. #13
    Join Date
    Aug 2004
    Location
    Tyler TX
    Posts
    676
    If you do not understand what those numbers mean why are you working on the system? If you wanting to learn this stuff atleast buy a book or 2 so that you get a basic grasp on what everything means
    HVAC Contractor, Tyler Texas.

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