Our pool system keeps shutting off and coming back on. Sometimes, it will go off and on within seconds, repeatedly and other times it will run for a long time and then stop for a long time. When it shuts off, the local display says Communication Error. I've tried every troubleshooting technique I can find on the internet. Changed the local display, and the wire harness for the local display. Transformer seems fine..Ohms are good. What could be causing this?? Its been extremely hot here in Florida. Could that be messing with the electronics? Any help is appreciated.