hi
over the last 18 months this boiler has had every major new part the last being a external expansion vessel about 6 months ago i noticed the other day thumping noises when reaching 2 bar pressure when ch is on looking outside at the overflow water was comming out (trickle and hot) when the hw is turned on is does the same only quicker when left eventually it cuts out and the fault code says a pump problem im mystified because everything works
i have a video of what happens if someone knows how to put it up
thanks if anyone can help
over the last 18 months this boiler has had every major new part the last being a external expansion vessel about 6 months ago i noticed the other day thumping noises when reaching 2 bar pressure when ch is on looking outside at the overflow water was comming out (trickle and hot) when the hw is turned on is does the same only quicker when left eventually it cuts out and the fault code says a pump problem im mystified because everything works
i have a video of what happens if someone knows how to put it up
thanks if anyone can help