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i am sorry, i am confused now, been a looong week and am tired :? but i really am interested now exactly howe an immersion heater works - the thermostat and element and the whole circuit. anywhere i can learn this from, any website(S)? sorry for annoying you Softus, I'm not doing it on...

a voltage test means seeing if there is voltage from one point or wire to another. i am not sure about how a resistance test works - i suppose as you have mentioned before, by seeing if there is resistance between 2 points/wires.

yes that is true, how silly am i! whilst i'm being dumb, one last query, the thermostat obviously of course heats up and then heats the element by conduction which in turn then heats the water in the cylinder. but what part does the element come into play regarding the immersion heater...

just to throw a spanner in the works - why can't a voltage test be used to test the element (from live to neutral) won't it do the same thing, ie show the element is working correctly?! please excuse me if i am way off it's been a looooong week!

hi - sory yes i know what resistance briefly, i am not an electrician! obviously as you will know, but basically i never thought about working it out with the triangle! i know that i have used the triangle (s) before for working out what size fuse to use, but never had any call to use...

ok that's gd then. 18-19 ohms is a strange amount isn't it! i wonder why it's that! anyway will do and hopefully there will be resistance between live and neutral, or i'll need not just a new thermostat but also a new element, so a whole heater replacement :(

yeah i guess not as long term as if there's no voltage going from live to T terminals then the thermostat has def. failed. so i'l need to get a new thermostat of the correct size i suppose. if the element is fine, do i just test from live to neutral terminals for resistance then? thinking...

yeah sorry i'm :oops: now! ha anyway there was no voltage coming through the stat when on (needing heat). so i take it the thermostat has def. failed. i just am wanting to be sure as if i do not need to replace the whole heater it will be a lot easier for myself! the heater circuit...

Hi Yes there is power to the stat when the immersion is on there is no power coming out of the other side of the stat though. there is no cut out button, as this heater is pretty old and before the regulation came in to place. so basically from this the thermostat has failed...

My immersion heater in my tank is not working (i do not have a boiler) :( just an electric shower and an immersion heater. For heating I have electric heaters. basically immersion heaters can be a bugger to remove as I have gathered and most of the time the thermostat is the problem and can...