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Tried everything - nothing happens basically. With filler key in place - turned using pliers, nothing happens With filler key not in place - turned using pliers, nothing happens What now please?

So I have the key. Question 1: Are you supposed to refill the boiler when it is on or off, or doesn't it matter? Re-pressurising The System Insert the bayonet end of the filling key into the corresponding cut outs in the filling loop housing and twist to lock the key in place. Turn the...

There is some sort of airhole that shoots a bit of air out of the top left of the boiler when it gets switched on. Is that it? If so, then I assume I can't raise the pressure and I need to try something else?

I have ordered the required key from ebay. How do I know that I have a sealed system and not an open vent one?

I have just moved into a new flat. The heating and hot water appeared to be working correctly when I moved in. I thought is would be a good idea to bleed the air out of the radiators, sigh… I am using the user manual located at...