Make sure the electronic control box is mounted with the connections on the bottom and not on the top. The original design from the manufacturer had the box mounted with the connections on top. Water could collect in the box and cause problems. The solution is to remove the toilet, remove the box and reattach it with the connections on the bottom.
I installed a cut off switch behind the toilet so power could be turned off when the coach was not in use.
I also understand other owners had problems with flooding from their toilets after flushing, possibly from low battery power. My assumption was the toilet couldn't complete the cycle and the valve remained open, allowing the pump to continue pumping water since the pump would operate until the battery(s) were completely dead whereas the toilet needed more voltage to complete the cycle. We've never had a problem with our Aqua Magic. It has always worked great.