I have a rather old central ac unit. It wasn't working at all and it looked like the contactor was bad. I replaced the contactor and the unit started right up. It will run for about 45 minutes and cools fine. Then it trips the breaker. It cools fine while it is running. The compressor already has a hard start kit on it. I have a couple of questions
How can I determine weather the condenser fan or the compressor is causing the breaker to trip?
Will a dirty condenser /debris or refrigerant charge contribute to the breaker tripping?
What should I check from here?
Thanks for any help