Hi,
just had a new combi fitted, what are the optium temp setting I should set for 1. the water heating, 2. the central heating.
The range is 25c to 80c
:?:
Thanks, I have the same issue with a very recently installed Baxi Duo-tec FE 40, I did your test and the LOUD HUM stopped. I will get the installer to adjust the mix and post the results.