Type: Posts; User: davidt
If your breaker is tripping you probably have a short to groud.
Yes these are simple things to check which are generally overlooked.You have airflow problem.
Is contactor pulled in calling for cooling? If yes check fuses/breaker.
check voltage at contactor if none you have bad t-stat,broken wire ?????
Clean condensor coils add attic venyilator
Sounds like they need to clean blower wheel if coils have been cleaned.May be this simple but often overlooked.Also check blockage of return air grill.