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  1. #1
    Join Date
    Nov 2007
    Location
    NC
    Posts
    137

    Condensor fan not moving air properly

    Interesting problem I've seen a total of 3 times now...and I haven't a CLUE. Nor does Carrier or Trane tech support.
    I've had this happen on a Trane Package Heat Pump, York Heat Pump and Carrier Straight A/C.
    The condensor fan assembly is running but doesn't move air UP and OUT of unit. Instead it seems to kick the air off the sides of the unit, which includes pushing it through the top of the condensing coil. I've replaced the motor and blade on the Carrier and Trane units but it doesn't solve the problem. This is causing very little air to be moved across the coil and is resulting in very high head pressure. Has anybody ever seen this? And if so have you found a solution?

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    68,556
    Since giving answers to question like this in the open residential forum. provides info for DIYers.
    You won't get the answer.

    Get your post count up to 15, and apply for pro membership.
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    How-to-apply-for-Professional

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

  3. #3
    Join Date
    Sep 2002
    Location
    I don't know
    Posts
    2,909
    ..............................
    General public's attitude towards our energy predicament: "I reject the reality of finite resource depletion and substitute it with my own; energy is infinite, we just need an alternative storage medium to run the cars on. The economy can grow indefinitely - we just need to "green" everything! Technology is energy! Peak what?"

  4. #4
    Join Date
    Aug 2001
    Posts
    116
    If you are describing the air as only coming from the very outer edge of the blade (and not all the way across the top of the unit), you are describing what happens when
    Last edited by beenthere; 05-13-2009 at 10:37 PM. Reason: Deleted DIY info

  5. #5
    Join Date
    Feb 2007
    Location
    Colorado
    Posts
    127
    Well Moderator said it first so I cant tell ya what it is, but I will say its a simple fix, get your pro on and we can go from there.

  6. #6
    Join Date
    Aug 2003
    Location
    Fort Worth, TX
    Posts
    11,369
    Quote Originally Posted by sandpipertech View Post
    Interesting problem I've seen a total of 3 times now...and I haven't a CLUE. Nor does Carrier or Trane tech support.
    I've had this happen on a Trane Package Heat Pump, York Heat Pump and Carrier Straight A/C.
    The condensor fan assembly is running but doesn't move air UP and OUT of unit. Instead it seems to kick the air off the sides of the unit, which includes pushing it through the top of the condensing coil. I've replaced the motor and blade on the Carrier and Trane units but it doesn't solve the problem. This is causing very little air to be moved across the coil and is resulting in very high head pressure. Has anybody ever seen this? And if so have you found a solution?
    Manufacturers omitting venturi rings to save a few $$ may be partially to blame. The remainder is a field remedy, which is *CENSORED*
    • Electricity makes refrigeration happen.
    • Refrigeration makes the HVAC psychrometric process happen.
    • HVAC pyschrometrics is what makes indoor human comfort happen...IF the ducts AND the building envelope cooperate.


    A building is NOT beautiful unless it is also comfortable.

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