Genteq ECM 3.0 issues

Discussion in 'HVAC Heating & Cooling' started by bobthebuilder123, Oct 3, 2020.

  1. bobthebuilder123

    bobthebuilder123 New Member

    Joined:
    Oct 3, 2020
    Location:
    British Columbia
    Hello, I have a Carrier furnace that started acting up last week after 8 years of great service. During the start up the blower motor will start to spin but will make a loud banging/vibrating sound, this will go on for several attempts when eventually the furnace will shut down and flash the error code 41. I have used the diagnostic chart which has instructed me that the blower motor ECM module needs to be replaced. I have tested the motor and it is fine and can't feel any play in the bearings.

    Before I go and buy a replacement module I wanted to be sure that it is indeed the issue. Has anyone ever seen a blower act up like this before, I spent hours searching and couldn't find anyone with a blower acting up in the same way. The blower motor is a Genteq ECM 3.0 GC07. I have attached a link to show how the motor is acting up and the banging sound can be heard throughout.



    Thank you
     
  2. plumber69

    plumber69 In the Trades

    Joined:
    Jun 20, 2014
    Location:
    Prince Rupert, British Columbia
    Disconnect power wait 5 minutes and pull ecm off. Look for burn marks. You can also test the capacitors with ohm meter. There are videos on how to fix them for 10$ instead of 1000
     
  3. Sponsor

    Sponsor Paid Advertisement

     
  4. fitter30

    fitter30 Active Member

    Joined:
    Feb 2, 2020
    Occupation:
    Retired service tech
    Location:
    Peace valley missouri
  5. bobthebuilder123

    bobthebuilder123 New Member

    Joined:
    Oct 3, 2020
    Location:
    British Columbia
    I removed the ECM off the motor and nothing seems burned and the capacitors aren't bulging on the top. The ECM board is encased in silicone so I cannot remove any components for further testing without digging out the board.

    I used the dealer toolbox guide and the motor checks out. The phases ohm similar to each other and nothing is grounded out.
     

    Attached Files:

  6. fitter30

    fitter30 Active Member

    Joined:
    Feb 2, 2020
    Occupation:
    Retired service tech
    Location:
    Peace valley missouri
    Need the model of the furnace and even then might need a laptop and a program for diagnosis.
     
  7. WorthFlorida

    WorthFlorida The wife is still training me.

    Joined:
    Oct 28, 2009
    Occupation:
    Retired
    Location:
    Orlando, Florida
    It was around ten years ago you could buy an ECM module. The motor and module were supported separately, not anymore. You'll only find then sold as one unit and these do not have start or run capacitors.
    I had one in my Carrier Air Handler go bad but it was still under warranty but labor still cost me around $300. I had changed a few out at the church I worked with 9 Carrier units and they and all fail in similar ways, the motor will ramp up then slow down, sometimes stop then ramp up again. Genteq was a GE motor and GE sold it to Regalbeloit.

    How ECM works
    www.youtube.com/watch?v=u5btD9jgNzk&feature=emb_logo
    How to troubleshoot an ECM but with special tools
     
  8. plumber69

    plumber69 In the Trades

    Joined:
    Jun 20, 2014
    Location:
    Prince Rupert, British Columbia
    It is normal for the motor to go back and forth for 3-5 seconds with minor vibration. I did read it's most likely the ecm if its longer then that
     
Similar Threads: Genteq issues
Forum Title Date
HVAC Heating & Cooling Furnace issues Feb 21, 2019
HVAC Heating & Cooling Ductwork issues, balance and basement renovation Feb 4, 2019
HVAC Heating & Cooling condensate drain issues May 4, 2018
HVAC Heating & Cooling Gas Fireplace: Electronic (IPI) Pilot issues Feb 10, 2018
HVAC Heating & Cooling Heat Issues need help Apr 23, 2017

Share This Page