My Trane 2 ton central AC has been flawless in the past 8 years. Last month had it checked out and tech added little freon, working just fine until yesterday afternoon. AC was running fine, then tripped its own 30 amp breaker AND the
100 amp main breaker...I reset and 30 seconds later it happened again. Waited a hour and reset breakers, everything running fine. AC cycles on and off like usual. After 5 hours of normal running both breakers trip again..I checked the tightness of all connectors in the breaker box and the outside disconnect and where they attach to the AC unit outside. Everything nice and snug, no corrosion, no smoke, no smell, no arc marks.Just trying to get some idea what the problem might be, maybe a start or run capacitor on the compressor? Maybe the 20 year old breaker is dying? I will try to get a clamp on ampmeter to see how many amps the AC is drawing. I do have the AC company coming out to look at it tommorrow. Anything suggestions? I was going to post this in the HVAC group but if your not a pro, they do not want to answer.. THanks.