Recent content by M3presman

Many thanks for taking the time to reply. The boiler pressure is set at the top side of the green shaded area on the gauge approx. 1.5bar. When the tap is open I can hear noise from the boiler which I'm assuming is the pump but it just wont fire. I've read about the diverter valve on other...

Morning all. My CB28 is refusing to fire up, on neither hot water or the CH. The pressure is set right and the lower warning light (B) amber is flashing every second or so. I've tried operating the black clip on switch to the left of the diverter valve but not a lot happens! Any advice please?