i have i ravenheat rsf 820 /20 t when the boiler is off it reads 0.5 bar when its on the bar reading shoots up to 3 bar and water comes out of the prv and it will contantly run at 2.8 bar when its on can anybody give me advice on this ?thanks :P
i have a ravenheat 820/20t the boiler is fine but just one little thing i bugging me when the hot water tap is running and then the boiler starts up a humming noise .it lasts for about 5 seconds till the water in the boiler is hot again .there is no air in the central heating as i have bled a...
