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Released air in EV while still pressurised. definately no water air side of EV. Recharged EV and repressurised system bled rads. Boiler pressure reading same as yesterday, but far better than originally. I will give it a couple of weeks and if still running ok get the boiler serviced to make...

Thanks again Tony i think i may have depressuried before i checked the valve for water. I isolated the boiler via the flow and return on the boiler stop taps but kept the primary circuit drain cock open while i repressurised and for the hour i left it standing to see it the pressure dropped to...

Tony, diagnosis spot on. EV showing virtually nothing on foot pump pressure gauge but no water came out of the EV valve when pressed so diaphragm appears ok. Followed FAQ instructions and your suggested settings on recharge left it an hour to make sure no pressure drop. Refilled system as you...

Thanks again Tony i have read the instructions in the FAQ just wanted to make sure i got the pressure right ps the Biasi manual has a fairly good explanation on how to repressurise the EV

ok thanks Tony, just downloaded the manual off Biasi's website to get EV info

Thanks for the quick replies. I will check and if needed recharge the expansion vessel this weekend and see if that solves the problem. Also will give it a dose of system restorer and then some fresh inhibitor to see if that helps any

Looking for some advice. This is the 1st winter we have had in this house. It is heated by a Biasi M90F 28S feeding 7 rads over 3 floors. The last 4 digits on the boiler are 1103 which i understand means built in 2003, but the rads in the system look older making me think they were not installed...