Yes - CDI - sorry!
It's a combi boiler.
Thanks for your response - I'll call the plumber tomorrow - hopefully it's something straightforward. I did wonder if it was something he had disturbed.
Thanks again.
Hi all
I hope someone can help. We had a leak in our boiler on Friday and the plumber replaced a part and fixed it (the leak was in a mains pipe and something had corroded - sorry for the lack of specifics). Since then our wall mounted thermostat doesn't control the heating. The heating stays...