Results 1 to 2 of 2
  1. #1
    Join Date
    May 2016
    Location
    Swaziland
    Age
    51
    Posts
    9
    Rep Power
    0

    Dunham bush 24000btu casette.



    Please help.

    I have a client with three (3) dunham bush casette airconditioners. Below is the model numbers of one of them:

    Indoor CS704M
    Outdoor PH24c.

    All three units are identical and are showing the same problems, i.e they are not cooling and show the same symptoms which are as follows:

    Suction pressure 60 psi
    Discharge pressure 150 psi.
    Condensor discharge air temp is ambient.
    Evapourator discharge air temp is ambient.

    From what I can tell, there is no restriction taking place at the evapourator i.e. refrigerant is just circulating through the pipes.

    Apparently I am the third tech to work on the units, the other two gave up. The client says the aircons have not worked from day 1.

    I just cant believe three AC's in the same area are defective.

    I have received no help from Dunham Bush.



  2. #2
    Brian_UK's Avatar
    Brian_UK is offline Moderator I am starting to push the Mods: of RE Site Moderator : and general nice guy
    Join Date
    Mar 2001
    Location
    Dorset
    Age
    76
    Posts
    11,192
    Rep Power
    60

    Re: Dunham bush 24000btu casette.

    Believe it if they haven't worked from day one.

    What refrigerant is in the units?

    If there are service valves fitted try closing down the discharge, liquid, line to simulate an expansion valve. See if you get a temperature drop across it.
    Brian - Newton Abbot, Devon, UK
    Retired March 2015

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •