Hello, I have a Vaillant Ecotec Plus Boiler. Every time after the heating has been on, when the system cools down I notice that the water pressure increases slightly. Yesterday I emptied the system to show 1.3 bar, yet after the heating system had been on that night, the next morning when the system was cold the pressure was showing 1.5 bar.
A week or two previous I had experienced a fault on the system, so I changed the water pressure switch, which fixed that fault, and at the same time I checked the Expansion vessel which was at zero and so I re-pressurised that to 0.8.
I cant figure out why there is water pressure increasing? Thanks
Ergin
A week or two previous I had experienced a fault on the system, so I changed the water pressure switch, which fixed that fault, and at the same time I checked the Expansion vessel which was at zero and so I re-pressurised that to 0.8.
I cant figure out why there is water pressure increasing? Thanks
Ergin