8-5-25 Classroom C AC is not working, possibly bad thermostat Found RTU-1 Aaon Found the condenser fan motor contactor coil is bad, causing the control circuit breaker fuse to trip. Install new contactor condenser fan motor is working. I also replaced the run capacitor on the condenser fan motor. It was very weak. RTU#1 is working. Is it at this time? They did have a power outage the other day so I also did a visual on the other four Aaon unit are running at this time.