Search results

  1. 0

    Pressure issue with Viessmann Vitodens 100 Boiler

    My Grans called me over as her boiler was not working. It looks like an issue with the pressure. The red reset light is flashing and the display is reading 0.5 bar. The picture shows the pipework for the boiler. I have opened up both the black valves by 90 degrees, first the one on the...
Back
Top