URGENT How do I attach hose to EcoTEC pro for low water pressure?

[Jaykaylia]

Hi,
I’ve got an EcoTEC pro boiler which is showing code F22 and therefore not turning on.
Last night I accidentally turned it off at the mains and only realised this morning; I’m not sure if this is simple coincidence? I’ve done it before without problems following.
I have an external hose to top up the water it can’t for the life of me work out how to attach it! Any help would be greatly appreciated. Many thanks in advance. I’ve attached photos

 

[Aquarius]

Undo the 2 blank caps (circled), attach hose at both ends, open up the cold mains side, you’re heating side is open, fill to approx 1.4bar, turn off valves, and disconnect the loop.

 

[Jaykaylia]

Thankyou. That did the trick. Easy when you know how but I didn’t want to do the wrong thing! Anyway, I now have a working boiler. Thanks again