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thank you for all your help yesterday. How can i rectify this fault ? I believe it is the heat exchanger as mentioned, can I prove this and then how do i de-scale it best?

Ok thanks for your help. How can i test for a scaled heat exchanger 1st please?

the cold main is very high, i'd say 4-5 bar, very very high! why would this make a difference though?? if the boiler has no diaphragm, how does it work then! is it a wax capsule type? if a faulty thermistor, will i need to drain down the boiler then? or is it 1 that just clips over the...

It is my house, I bought it and the landlord cert's were left here along with the manual. I believe the house was owned and rented out before that's why the service/landlord certificates, as of the law I believe. I am stumped! Fitz yes that does happen, exactly that does, after a min or...

Boiler is not greenstar, not a condensing type either. I'd say about 8years old? I have lived here for 3 months and have noticed it. The boiler has gas cooker have landlord certificated dated recently.

Hi I have a Worcester 28i junkior combi boiler. The problem seems to happen when running a bath (so my wife says) and I have noticede this when washing up: The water gets hot, as normal and all is good, but then all of a sudden (after a few mins) runs cold again, just like normal cold...