My hot water gets hot then cold then hot then cold and so on. To get a bath full of hot water we have to run the tap very slowly. Having a shower is out of the question at the moment. (shower comes from hot and cold taps)
I have taken out the secondary heat exchanger and cleaned that. It was not very dirty.
What would be the order of looking for next to cure this problem?
I am guessing, flow switch then perhaps diverter valve?
Is there a way to test these before I go to the expense of replacing them?
All suggestions gratefully received. :)
Steve...