Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

reverse spin

Hello all,

Is it possible that when a run cap on a single phase condenser fan motor goes bad, your motor would spin in the reverse direction?

Josh W

Comments

  • Larry C_13Larry C_13 Member Posts: 94
    Motor spinning backwards

    Yes.

    Larry C
  • bill_71bill_71 Member Posts: 46


    i suppose it could be possible to have a short in a reversible motor that might make the motor run "backwards" but i have never run across that. a bad capacitor won't make the motor run backwards, it will only make the motor spin unbelievable slow or not at all. either way its probably spinning backwards because the condensing fan motor right next to it is still running full bore and pulling air though the shroud making the fan spin backwards:)
  • JBW_2JBW_2 Member Posts: 67


    Hey Larry,

    Is this a common occurrence?

    Regards,

    Josh W
  • Larry C_13Larry C_13 Member Posts: 94
    Edit to Yes.

    I agree with Bill. The motor can turn in either direction at a reduced speed. The motor will be hot from a lack of airflow and higher current draw.

    Larry C
  • David_5David_5 Member Posts: 250


    I've seen a Unico blower motor capacitor fail. I couldn't tell if it was running slower, it did run backwards.

    David
  • mtfallsmikeymtfallsmikey Member Posts: 765
    Or

    It will try to start, fan blade wil try to move both ways, acts like its locked up but isn't
  • Larry C_13Larry C_13 Member Posts: 94
    Common?

    I don't know, however it happens on occasion.

    Larry
This discussion has been closed.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!