Hello, I have owned an appartment in the South of France since 2002. My question concerns my water heater. It's the large white elecrical cylindrical tank type, located in the bathroom. The problem is, when I am not in France, I turn off the electricity at the mains. On arrival in France, I turn it on. Trouble is, the water heater takes a looong time to heat up (more than 12 hrs sometimes, seems to vary). Now, I have just read somewhere that these heaters operate on cheap overnight electricity. So, is is possible that despite my turning on the mains at 10am, the heater just ignores this and waits for some trigger time ? If so, what time is this likely to be, and can I override it when I need to ? Thanks in advance.