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  1. #1
    Join Date
    Feb 2007
    Location
    S.E. Missouri
    Posts
    258

    Trane TXV/coil service bulletin?

    Is there any way someone could post the Trane Service Bulletin about TXVs that cause a water hammer sound. I noticed in another post today that Southern Mech stated something on this issue. Our five year old system works fine other than the water hammer sound on first stage. System was installed in June of 2007 and is a cooling only system with gas furnace. XL19i and XV90 furnace. Model numbers are 2TTZ9036B1000BA (condensing unit) TUY080R9V3W6 (gas furnace) and TXC036S3HPD0 (indoor heat pump rated evaporator coil) Installing dealer has been back a few times since installation, but once unit is run in second stage and drops back down to first, noise disappears long enough for them not to hear it again during the service call, but after running in low stage on mild days, water hammer sound happens again. Very annoying on an otherwise very quiet system.

    Thanks!

  2. #2
    Join Date
    Aug 2004
    Location
    North Richland Hills, Texas
    Posts
    14,914
    The service bulletin is for failed and under feeding R-22 valves, not a "water hammer" noise.
    http://markbeiser.com/HVAC/documents...-EN%5B1%5D.pdf
    If more government is the answer, then it's a really stupid question.

  3. #3
    Join Date
    Feb 2007
    Location
    S.E. Missouri
    Posts
    258
    Thanks Mr. Beiser. I guess the search continues. I know the coil I have has a factory Emerson Alco ANCE TXV from the factory. So I guess this bulletin would not cover anything besides the Sporlans.

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