as the title says i have a potterton puma 80 and its being a pain... i have got hot water (well as hot as it normally is which is not that hot and never has been) but the central heating will not stay on. when i put the central heating on the boiler stays alight for about 20 seconds then goes out (both main burner and pilot trips) i have just changed the diverter valve and the pcb (i read that it should be 1 or the other on here) but it is still happening, can anyone shine some light on what i should look for next.
thanks in advance Andy
thanks in advance Andy