Thanks Gasman.
Found the valve and gave it a quick press, air came rushing out however there was also a small ammount of water spray. The system was off when I did this. Would this indicate that the boiler is ok and the leak is in the system?
Any help would be gretfully received.
I have a 3 year old Vokera Compact HE, sealed boiler fitted in a first floor cupboard. For the past 6 months the boiler has been slowly losing pressure requiring it to be toped up every 5 or 6 weeks. However over the last few days the pressure has dropped...