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Ken
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I am suspecting that you do not have the correct power and possibly a capacitor is out as well.

I am going to state a couple observation about your video so read closely.

I am looking at your video post and watching the SLOW moving Condenser Fan and I also heard the BUZZ.

As for the condenser fan it seems like your RUN circuit is not powered up - this can be one of a couple things depending on how that motor is wired - and if it is 220V. Run Capacitor could be bad. However I suspect that you have a BAD phase feeding the AC unit. The reason being is that your compressor is not running either.

Please Check your power coming off of your Circuit Breakers - check it at the Terminals of the Condenser Unit . You should have L1 and L2, check L1 - N(115V), L2 -N(115V), L1-G (115V), L2-G (115V) , L1- L2 (230V). I am suspecting a Circuit Breaker has high resistance and either not supplying power or supplying very little power - when measuring at the condenser watch which line (L1 or L2) DROPS when you start the unit up. That will tell you which side of the breaker is bad or possibly your contactor, You will need to measure on both sides of your contactor while doing this check (contactor only pulls in when compressor is told to run) Contactor T1 and Neutral , T2 and Neutral - you will need to verify both sides to know whether you have a bad contactor or a bad circuit breaker.

If you can post a picture of the wiring diagram found inside the panel cover that will help tremendously. Then I will know how that motor is configured for start winding or not.

Ken
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