Thanks for the reply..... to answer your question, yes he was cheap, very infact, as we haven't paid him yet! :D
I'm going back to the supply to see what they say.
Cheers.
Hi,
We’ve recently installed a new single zone underfloor heating solution.
This worked ok for about a week and then stopped working. Doing a bit of investigation I found there seemed to be an issue around the mixing valve, if I turned up the thermostat hot water would start being...