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Ok thanks both, that makes more sense. They were always reading the same value until the last week or so where the digital vaillant reading started reading about 0.4bar higher than the analogue one. Pressure dropped again and I refilled to 1.5 bar a day or two ago. All fine. Today, had dropped again overnight, but this time after re-pressurising using the filling loops, the pressure went back up but the F75 code has arrived again so nothing working, no hot water no heating, very frustrating! I know the installer will say to just reset the boiler but not comfortable doing that - surely just because there might be a pipe leak , doesn't mean there is nothing wrong with the boiler - the F75 code has only started coming recently, could the pressure sensor have blown?
Will call insurers on monday to find the leak but worried that they will say there is a problem with the boiler that hasnt been sorted out yet..and until then we got young kids and no hot water or heating for a couple of days, nightmare!
Will call insurers on monday to find the leak but worried that they will say there is a problem with the boiler that hasnt been sorted out yet..and until then we got young kids and no hot water or heating for a couple of days, nightmare!