Recent content by Raje

JohnD Thanks for your help - i turned the valves and left it on long enough and all radiators heated and hot water working. Not sure how the hot water and some of the heating has been working until now! I initially thought closed as outlet pipe was only getting hot in closed position.

Hi hoping someone can help... I have a valliant ecotech plus 637 installed in a refurbished property. The boiler will not heat the radiators as it keeps cycling to code S.07 pump overrun as the temperature shown on the boiler display rises from 40degrees c to 80 in the space of a few minutes...