I have a Vaillant TurboMax 242E which has been losing pressure, I have re-pressurised the expansion vessel to 1 bar. However, it is still losing pressure and dripping water out of the small copper pipe on the outside wall. When I checked the expansion vessel it was only air that came out rather then any water. Is the next thing to replace the pressure release valve?
Was I correct to re-pressurize the expansion vessel to 1bar?
Was I correct to re-pressurize the expansion vessel to 1bar?