Results 1 to 4 of 4
  1. #1

    Residential split, orifice style, fluctuating suction temp

    Have a Ruud 10 seer 3 ton split with standard orifice style that has me scratching my head. The suction pressure is low but is stable at about 55-58 psig. The subcooling is right about 20 degF, and I backed the charge down until the suction temp would climb up to about 45 degF. Now the strange part of the matter is the suction temp. It will climb up to 45 degf and will go down to about 30-32 degF and then back up and down. The suction pressure does not fluctuate with this temp change. Head pressure was right at 200psig and it was about 70 degF OA. There is no temp change across the filter drier. The evap coil is clean now, and the airflow across the coil is within the realm of reason. Any ideas????

  2. #2
    Join Date
    Sep 2002
    Location
    Northeast Ohio
    Posts
    4,843
    Interesting and worth discussing but we won't be able to in the open forum (gut feeling). Rules will most likely preclude this happening.
    A good HVAC tech knows how, an educated HVAC tech knows why!

    DEM


  3. #3
    Thanks for the info. will apply soon for pro status and repost.

  4. #4
    Join Date
    Sep 2002
    Location
    Northeast Ohio
    Posts
    4,843
    Quote Originally Posted by advancedhvac View Post
    Thanks for the info. will apply soon for pro status and repost.

    I'll be watching
    A good HVAC tech knows how, an educated HVAC tech knows why!

    DEM


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Comfortech Show Promo Image

Related Forums

Plumbing Talks | Contractor Magazine
Forums | Electrical Construction & Maintenance (EC&M) Magazine
Comfortech365 Virtual Event