water pressure dropping ?

There must be a leak some where. Is there any pipework you cant see that might be leaking? Also is the overflow pipe deffinately always dry? It doesnt take too much lost water to drop the pressure. What happens when the heating is on, does the pressure go up above 3? If it does water will pass through the overflow. If this is happening it is a problem with the expansion vessel, it either needs recharging or replacing.

Garu Farhall
November 2010