How to check pressure on Intergas combi boiler

Check pressure on Intergas combi boiler

1 Press on /off button and it will show the system pressure
2 If you press it again then will return to the main screen

[nathanrowbotham]

How do I top the pressure up on this boiler as it's saying 1.2

[qnalraj]

My boiler was making Knocking sound and showed error code 0 . Then I turned off the apartment heating ( lowered the temperature) and error code went away. I checked the pressure and it showed 1.2. Is the problem fixed or do I need to do anything?

[amienef]

Hello, how can I refill and check the pressure while refilling with water ? thanks !

[deaosatori]

why does mine not show the pressure when i do this?

[aspec]

Filling loop underneath on a flexi hose open the valves for a couple of seconds the off