The boiler pressure is 0.5bar and the warning light is flashing. I have tried restarting the boiler and the heating and hot water is working, but the pressure hasn't changed.
Under the boiler there is a blue colour knob (mains inlet tap). I've turned this anticlockwise to let water into the boiler and create a higher pressure, but nothing happens.
I was told that I should allow the water to flow in until the guage reads about 1 bar then turn off the knob. Sounds like an easy fix but no water is flowing in. Can anyone offer any assistance or help?