Pressure on combi boiler leeps falling below nought going away me beside no heat or hot river??? this has be happening more regulary not long and i was simply...

this has be happening more regulary not long and i was simply topping it up when it did, engineer come out replaced pressure vessel which seemed to breed matters worse and have now granted he has 2 procure under flooring to check for a bleed even though he has be out 5times and never suggested this before!! It wont consent to me top the pressure up anymore and i cant get pilot lighting back on this have went from taking place every few weeks to every hour since vessel was replaced!!
You other see associates lighting a clash when...
Definitely sounds similar to a leak. If he fixes it , return with a refund on the cost of the pressure vessel.

How long after putting pipe dope on threads...
You specifically have a dampen leak somewhere.

I have this a few weeks ago.

Boiler kept making horrible noises when i tried to put on a pedestal the pressure.Soon as it was sorted the pressure go back up
Whats the best approach to clear solid drain?
Answers:    The pilot won't desk light because the high parameter stat has tripped, this is because the boiler have run dry, don't do it too often or the boiler will be diluted, the boiler has run dry because you own a leak, look outside where on earth the boiler is, there may be a small copper pipe sticking out, if the wall is river marked, or the pipe is dripping, you have need of a new pressure nouns valve, may enjoy been the imaginative problem, maybe zilch to do with the expansion vessel.