Results 1 to 6 of 6
  1. #1

    Trane HP banging noise on shut off

    HI,
    I have a trane XE1000 HP (Model #TWR0366100A3) that's been making a shut off banging noise for many years and the past HVAC guys simply said it was the compressor moving when it shuts off. A new HVAC guy came yesterday for maintenance and noticed the loud bang noise on shut off and says its the fan blade mount with 1/8" play in it when it starts and stops. I told him it's been doing the same noise for 6-7 years with no problems but he said fan could be it and come loose.
    After he left I noticed the compressor seems to bounce around on the its mounts when I wiggle the HP unit. I thought the mounts and compressor should be solid to the floor but seems to be on flexible rubber feet allowing for this movement.
    Now, is this normal for a flexible mounting like this for the compressor and do you agree with the possible fan issue?
    Could it be the compressor pipes hitting as the unit moves on shut down and start up? I do not want to unnecessarily replace the fan blade for $when that is not the real issue.

    Any immediate advice is appreciated!

    thanks
    Rick
    Last edited by beenthere; 10-29-2010 at 04:20 PM. Reason: price

  2. #2
    Join Date
    Oct 2010
    Location
    SW Michigan, near Battle Creek
    Posts
    921
    compressors are on rubber mounts to absorb vibration (like motor mounts in a car)

    the fan thing has me confused. is it the motor mount (motor to cabinet) or the fan blases that have the wiggle? (1/8 of play in fan blades seems very unlikely)

  3. #3
    Join Date
    May 2000
    Location
    Indianapolis, IN, USA
    Posts
    33,898
    Trane compressors do make a thunking noise if moved or if they move themselves. Shake the unit and see if you hear it. They aren't rigidly mounted, should be a little play for vibration deadening purposes. Hard to say on the blade without seeing it. See if you hear the comp noise.

  4. #4
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,722
    The compressor is mounted on rubber feet so it can move.

    may or may not be the fan. Would have to be there to know.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  5. #5
    Join Date
    Jul 2009
    Location
    Columbia, MD
    Posts
    3,787
    had a problem with the same unit at the beginning of this year. txv on id and od units. turned out to be about 3-4lbs overchared. when the unit cut off it rattled the indoor unit extremely. thought it was a ghost at first. have a pro check for correct charge on it. this was also happening in the heating season i believe

  6. #6
    Join Date
    Sep 2010
    Location
    NY
    Posts
    325
    Using my psychic AC Tech. abilities I am seeing in my minds eye that you have a Trane M # TWR036611A3. Heat pump. (kidding) No idea.... If it is the comp. banging around it would produce a comp. banging around noise. If it is a fan blade hitting something noise it would make that noise. Let the Tech. diagnose and repair.

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