Worcester Bosch Greenstar 24i low pressure

[andyboiler]

I have had the Greenstar 24i in for 4 months now, and we have just started using the heating more. The pressure when cold has dropped into the red zone - below .5 bar. I want to up the pressure to 1 - 1.5 bar, how do I do it? I have the key, and I can insert it, but I don't know if it should be in the locked or unlocked position, and I don't know what to do next to add pressure.
Your kind help would be appreciated, thanks.

 

[totalshell]

get the key slide it in ( it should go easily then push gently so that it seals,) then turn it 90 degrees so it locks in place.

to the left of the key youll see a small white cube approx 1cm sq. turn this to the left youll hear water running keep an eye on the guage and stop when it is just over 1 bar then close the cube by turning to the right. turn the key and remove it ( a little water , less than an egg cup may come out)

DO ALL THIS WITH THE HEATING OFF AND THE RADIATORS COLD.

 

[andyboiler]

Many thanks Totalshell. Everything done according to your instructions, and the boiler is now running at just over 1 BAR. I also removed the key afterwards. I will keep an eye on the pressure, because there is a slight water leak from somewhere in the boiler, just a few drops on the tray underneath. The guy who installed it is coming back Tuesday, so I hope he can sort it out.
Once again, a big thank you.
Andy