What causes a compressor to run backwards on a outside condenser unit model fmb1024
Outside cond. Unit making a loud buzzing noise, I replaced the run cap, relay, and fan motor, everything seems to be working properly except the super loud buzzing noise, I made sure everything was tight no loose screws , I even put rubber sound absorbing pads under the unit and its still making a super loud buzzing noise when the outside unit is running, is there something that I might have over looked?? And what can I do to correct this problem??
a/c comdensor buzzing noise problem lennox 2-ton model fmb1024
Cond, unit model fmb1024 lennox super loud buzzing noise when cond, unit is running outside, I replaced fan motor, run cap, relay I made sure everything on the unit was tight, I even put sound absorbing pads under the unit , everything seems to be working fine compressor is running fan motor running fine , but I can't figure what is causing this loud buzzing noise, is there something that I overlooked or is this unit shot?? out