Triton 82600250

It may be a faulty element in the heating tank (there are two, three in 10kw showers) you can check them with a multi meter you should have a reading of around 12>18 ohms.

If you have power to the elements and no heat it's probably the elements, no power to the elements then it's probably a micro switch.

If you don’t have a multimeter  we sell them at £10 each with a guide on how to use them for checking and testing the various parts of your shower.

Apart from helping to fix your shower, they are really useful for checking you have a power supply to appliances, for checking fuses, letting you know much power you have left in batteries

(so you know if they are dud or not)  and lots of other jobs, in short they are well  worth the £10.

http://www.shower-warehouse.co.uk/erol.html#55x878

Click on the link below and scroll to the model of shower you have and you will be able to order required part(s) online.
If the part(s) are obsolete and a new shower is required you will find our recommended replacement at the bottom of the page