Water pressure going down?

check the saftey valve it could be leaking from there, if so the pressure vessel may need recharging and possibly the saftey valve replacing

daz
February 2010

I have a similar problem to John. Water pressure falls about 1 bar in 12-15 hours, then the system has to be topped up. I have examined all water pipe connections and radiators but found no leaks so the only component I can thik of next is the boiler There are no obvious signs of water leakage so could it be the heat exchangers, diverter valve?.
Any help would be greatly appreciated.

G.K.
February 2010