On Aug 10, 8:16*am, "HeyBub" wrote:
komobu wrote:
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?

Measure the current they are drawing. Also make sure the breaker
is sized correctly.





Will a dirty condenser /debris or refrigerant charge contribute to the
breaker tripping?

What should I check from here?

Thanks for any help

A similar thing happened to me. My son's neighbor, a midnight A/C
technician, diagnosed the problem in a nonce.

CAREFULLY put a finger on the breaker (side of the breaker is best). If the
breaker's warm, replace it.

$15 at the box store and everything is cool.- Hide quoted text -

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