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  • ECM motor RFI

    From Steve@jsteve_n@comcast.net to alt.ham-radio on Wed May 2 15:23:57 2012
    From Newsgroup: alt.ham-radio

    I have some RFI issues with the ECM motor in my furnace... S7 - S8 when its running, zero to almost zero when its shut down. The rig is a TS480HX. The furnace is a Rheem model number RGPR-07EBRQR. Has anybody else run into RFI issues with ECM motors?? What did you use for a work-around? FWIW, its not
    the thermostat or 24v control system, its the motor and/or the motor control.... I hear the sound change when the motor ramps up to speed, or
    ramps back down.

    Any help please??

    -Steve
    n6ojn


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  • From Steve@jsteve_n@comcast.net to alt.ham-radio on Fri May 4 11:03:36 2012
    From Newsgroup: alt.ham-radio


    "Steve" <jsteve_n@comcast.net> wrote in message news:jns555$lv9$1@dont-email.me...
    I have some RFI issues with the ECM motor in my furnace... S7 - S8 when its >running, zero to almost zero when its shut down. The rig is a TS480HX. The >furnace is a Rheem model number RGPR-07EBRQR. Has anybody else run into RFI >issues with ECM motors?? What did you use for a work-around? FWIW, its not >the thermostat or 24v control system, its the motor and/or the motor >control.... I hear the sound change when the motor ramps up to speed, or >ramps back down.

    Any help please??

    -Steve
    n6ojn

    I replaced the control board and the RFI noise level dropped to S5 when the blower is running... need to make a run to the electronics supply house and get a fist full of ferrites and toroids.


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  • From kcGSH6nC@kcGSH6nC@mailinator.net to alt.ham-radio on Thu May 10 01:05:17 2012
    From Newsgroup: alt.ham-radio

    Steve wrote:
    "Steve"<jsteve_n@comcast.net> wrote in message news:jns555$lv9$1@dont-email.me...

    I replaced the control board and the RFI noise level dropped to S5 when the blower is running... need to make a run to the electronics supply house and get a fist full of ferrites and toroids.



    You sure it wasn't a loose ground? Might have inadvertently made that
    better when you swapped that out.

    Make sure all the motor chassis bits are grounded appropriately. Should
    help.
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