Hi all, the pressure on my boiler is 3 bar and it should be between 1 and 1.5. It keeps making a snoring noise when not in use. I had a new bathroom radiator fitted a couple of months back and I think the system was bled then. Even when the heating and water are off the pressure remains at 3. Also one of bedroom radiators will not go warm at the top and when I've tried bleeding it a small bit of air releases then nothing. No water drips like in the other rads. Does anyone know how I should lower the pressure? Whether it is dangerous to continue using? Whether it's a problem with the pressure clock if still at 3 when off?