The macerators obviously need to be switched on to supply power, but what else switches them on to run? Neither of mine are operational and I am just starting to do the troubleshooting including finding where they are mounted and figuring out how they are supposed to work. I expect the motors are not set up to run whenever they are switched on at the power panel as that would require anyone using the head to turn them on and off and reason would suggest the off would be remembered far less than the on.