power when the air conditioner units have been running for awhile. The main power box gets extremely hot. (PowerTek, elecrtical distribution center). My husband replaced the ECC bd., no luck. When he opened the panel, power came back on. When he went to close it, we lost power again. We feel at this point it is a short somewhere or maybe the circuit breakers. Also, when the ac units are running the heater will start without being turned on. We are currently living in the rv. Please help. Thank you.