I think I have an immersion Heater thermostat on the blink. I awoke this morning to a bit of a gurgling and hissing, and the hot water tank was very hot as was the expansion pipe in the back of the airing cupboard. I of course manually turned it off to save the power and hopefully the heater. Its been a while since I changed this item, back when I could see enough. Am I right in thinking that the long rod simply pushes down the long rods centre that is on the heater fixing? I assume the wires are just in series with the heater and the thermostats are pretty standard so they break connection when hot enough? Before I actually get one and attempt to fit it, how are the ends terminated and would you think, given a power off situation one could do it by feel. I've no trouble with connection blocks and other forms of connector. However I cannot solder obviously! There is as I recall a small screwdriver slot on the top of the unit which one supposes one turns to the point where the heater goes off at the desired temperature. This would be by guess work I'd imagine
Ignore elf and safety, I'm pretty careful! Brian