Results 1 to 5 of 5
  1. #1
    Join Date
    Feb 2007
    Location
    solihull
    Posts
    53
    Rep Power
    18

    trane rtaa 213 EEV fault (1AA)



    Got called to a trane water chiller this morning , model ertaa213 (1994) , 2 circuits , r134a

    found circuit 2 showing fault 1AA ( EXV CIRCUIT 2 )

    reset the fault on the controller , system started up , ran for 10 minutes , after which the fault returned , but this time could not reset ,

    i could do with the operation and maintance manual for this controller (chiller manufactures date 1994) (older type off controller ) ,cant see it on the trane web site
    the model off the controller is trane adaptive control


    any help to daignose is welcomed

    thanks
    Last edited by knight rider; 09-05-2009 at 06:27 PM. Reason: model number



  2. #2
    Join Date
    Feb 2007
    Location
    solihull
    Posts
    53
    Rep Power
    18

    Re: trane rtaa 213 EEV fault (1AA)

    after resetting the fault on the controller , the system goes through a pre start , in which both the expansion valves go through to the pre set postion ( the motering nosie can be heard) ,
    system 1 will restart , but system 2 goes straight into fault without starting code 1AA ,

    standing pressure at 5 bars, the sensor readings according to the controller seem to be reading correctly

    going back to site monday for further checks,

    anyone had this kind off fault before ?, could do some advise
    thanks
    Last edited by knight rider; 09-05-2009 at 06:26 PM. Reason: wrong model number

  3. #3
    Join Date
    Dec 2008
    Location
    UK
    Posts
    55
    Rep Power
    16

    Re: trane ertaa213 EEV fault (1AA)

    Hi, I do have an IOM for this machine somewhere in my shed. I will scratch around and forward you the fault code.

  4. #4
    Join Date
    Dec 2008
    Location
    UK
    Posts
    55
    Rep Power
    16

    Re: trane ertaa213 EEV fault (1AA)

    1AA Relates to Circuit 2 Expansion valve motor or control module fault.
    Chech the connections on the module A52-2. Also identify and check the windings in the EEV Motor. There should be 2 sets of windings . ie 4 wires /2 wires to open and 2 wires to close the valve. 24vdc is applied to either open or shut the valve.
    Alos check the fuse at the top right A52-2 module( 110vac -630ma )
    Let me know how you get on.

  5. #5
    Join Date
    Feb 2007
    Location
    solihull
    Posts
    53
    Rep Power
    18

    Re: trane ertaa213 EEV fault (1AA)

    hi centrecipew ,
    thanks for the info ,
    i replaced the pcb board which controls the expansion valves about 3 weeks ago , its working ok now,
    once again thanks

Similar Threads

  1. Daikin r407c 2 pipe vrv ja fault code any offers?
    By Contactor in forum Air Conditioning
    Replies: 11
    Last Post: 28-07-2009, 01:26 AM
  2. trane
    By cool_tech in forum Air Conditioning
    Replies: 2
    Last Post: 15-11-2008, 06:48 AM
  3. Fault with Tango cassette
    By airefresco in forum Air Conditioning
    Replies: 8
    Last Post: 19-09-2007, 08:42 AM
  4. UA Daikin Fault Code
    By jedi in forum Air Conditioning
    Replies: 2
    Last Post: 23-07-2007, 01:44 PM
  5. u4 fault on a Daikin inverter
    By phil17 in forum Air Conditioning
    Replies: 39
    Last Post: 05-02-2007, 03:41 AM

Posting Permissions

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