Hi Guys
Thanks for taking the time to reply. I have had Ferroli out to the boioler, but not for a while. A plumber friend has suggested it may be the expansion tank, so will investigate further.
I will see about getting the pipe work looked at on the Megaflo. I can't believe it can be...
Hi All
I have had a look through some posts and there seems to be a lot of problems with these boilers. Here is my issue.
Background
Ferroli Optimax s35
Megaflo 210
Underfloor heating downstairs with 6 port manifold and 3 zone controllers.
5 Radiator upstairs with heated towel rail...