Hello Tony, remove the low voltage wires coming from the home into the Boss unit. If it still runs then the unit relay needs replacement, it is stuck on. If it will shut off (and you can use the toggle switch on the unit to test this) and then back on manually - you need find the compromised wire within the home. You have a short. Anyone recently hang a photograph, work on the home, or seen a rat? If you can't find the issue we have a remote control unit that bypasses the low voltage wire.