Sussex Duo habitation temperature sensor

Off too France we went, every compartment filled for a 6 week trip. First night,  needed hot water , but nothing except a red selector light. Tried everything but nothing working. From my aircraft troubleshooting day, worked out logically that it the system requires heat control, then maybe.........! Sure enough , the rear offside small compartment adjacent to the  heating sensor, having stuffed all sorts in there, had pulled off one of the wires. Bingo, having connected, working normally again. Bit of advice if someone experiences the same problem. Now wires are all taped up !!