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Keep an eye on that though. I had pressure issues at one point and went about solving them this way but the issue was the expansion chamber which had failed, eventually the over pressure valve blew and they often don't seal properly after they've blown.
I'm probably breaking some rules by pointing out that you can test an expansion chamber even if it's integrated in the combi. Sometimes people replace them as it's a plumbing job that doesn't involve gas. Not sure that's allowed though. Integrated ones vary but mine cost approx £130 a couple of years ago.
Airhead-
Not sure that's allowed though.
It is. You can even do your own gas work if you are competent. You only need to be registered if you are working on someone else's gas. I wouldn't but it's not illegal.
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ah great - will keep an eye out and see if it keeps happening more quickly than expected.
it’s a 6-month old Vaillant, so if it is an issue with parts, then I should be covered by the warranty fortunately
jellybaby
hvsds
friendly reminder to check your boiler pressure and bleed rads if needed.
only by chance spotted ours was at 3.4 bar when heating (max should be 3 bar for this one) - and was still about 2.5 bar when cold(ish).
fortunately was just a case of going around the house and letting the air out of a couple of the upstairs culprits - now back down to reading 1.3 bar cold.