Can anyone tell me what could be wrong with our boiler. We had it fitted 18-months ago and just recently it has been making a humming noise like a jet engine... and you can hear it in every room in the house.
It has also started to leak water from behind the cover that gives access to the burners.
The engineer who fitted it came out and removed and cleaned the plastic tank that collects the water from the condensor, But one week later and it is happening again!
The engineer has now told us that he doesn't know whet is wrong and to phone another engineer!