Karl1980New Member
I have probably one of the worst boilers you could have (not my fault, blame the home developer!)
It's a Ferroli Optimax HE18s.
We are getting a really loud vibrating noise when the hot water comes on.
But if I switch the boiler off then on again and stops straight away and carries on like nothing has happened.
I've recently changed my water to come on 2 times throughout the day and not sure if it's a coincidence but it seems to happen when the water comes on. It did happen to from time to time when it was on constant so was never sure if it was the heating kicking in or not? However, it still is only every now and then it happens?
Anyone have any ideas?
