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OK thanks JPH, what am I looking out for on the auto air vent? What does it do and how can I test it? Where abouts is it on the grant 90?

While i'm on the matter of fixing the boiler, ever since we moved in, we notice that the hot water doesn't stay hot for long. I.E. when running a bath, it comes out scorching for say 3-5 mins, then becomes luke warm. This is no good for a bath if you are like my missus and like it hot (and a hot...

One other thing, can you not use the PRV to release the pressure off? For example, when i go home tonight, if the gauge is reading above 0 (I fully expect it to have lost all it's pressure by then, but hey!) I will need to release the water pressure so I can check the expansion vessel...

OK, when I get home, I will check the expansion vessel for leaking water via the valve and top up as necessary then top the water pressure up and give that a go. If that all works, I still think I will need to flush and put inhibitor back in after. Any other ideas? cheers

Oilman, no, I don't think I did check the pressure with the water pressure reading 0! OOOPS! I will check that again tonight as the boiler will be reading 0 by the time I get home tonight! I used a standard car foot pump to check the pressure. Is that ok? Also, the worktop is actually in 2...

OK, thanks. I may just turn it to see if there is any dirt in it keeping it open? Also, I will have to work out how to get into the thing as it doesn't appear to have removable side panels so access must be via the top (then the side panels can be removed) The boiler is in our utility room and...

I didn't change my post?! OK, pressure relief valve. I heard it could be that especially as I did once fill it above 3 bar and it leaked out of the prv. I read the FAQ, and once water has leaked thru there, it can stay open due to dirt/sludge/whatever! Where can I get one of these from? Is...

Hi all, new member here, so be gentle!!! OK, we have the above model combi in a 5 year old house. It has been working very well until recently. It is losing pressure I'd say every few days. I know what you will all say, it must be a leak! But I have looked everywhere on all the rads, and...

I know this is an old post, but I wondered if you sorted this problem out? I have exactly this problem with this boiler. I need to get it fixed asap! Thanks