Recent content by howarthcd

Thanks for all of the responses. Just to elaborate in case others stumble across this post in the future, the problem was that the outside air intake had been inadvertedly (I assume) sealed off by a previous owner. Now that the intake has been unblocked the boiler is better than it has been...

I do have the manual but it's not clear from that unfortunately. Yes the flue does consist of two concentric pipes. Thanks Chris

Hi All Thanks for your replies. Something that I've just noticed - comparing the flue outside with those of our neighbours' (we all have the same boilers) might well have just given me a clue - it looks like the air intake has been sealed off, which would explain why the boiler worked fine...

This evening the plate heat exchanger was removed for inspection but no calcium deposits or blockages were found, however there was a ~1cm diameter ball of calcium that was ejected from the bypass pipe upon removal. The plate heat exchanger was re-fitted, and upon testing the situation...

Thanks for the advice - I guess that a service would be a good idea. You say that this is a common problem, but what is the likely cause? I'd like to know what the possible cause is so that I can be confident that an engineer's diagnosis is correct. Thanks Chris

Hi All I've started having issues with my Halstead Ace High and I was hoping that someone with greater boiler knowledge than I might be able to help me pinpoint the fault. After running DHW for approx 5 mins the burner cuts-out, the water runs cold and then the burner re-lights within 10s...

Thanks for the quick response. I think that steam was being forced out of the vent. Should I treat this as a one-off incident or is it something that's likely to recur? It's not happened before (to my knowledge) and hasn't happened since. Would you recommend getting someone out to investigate...

Well, it seems that for some reason the 'Auto Air Vent' was venting - but what would cause this to happen when running the central heating? Cheers Chris

Hi folks I'm just wondering if someone might be able to cast any light on to a strange incident that occured with our 6-yr old Halstead Ace High boiler this evening. Up until now the boiler has been working fine, and this evening I turned the heating on and the burners fired up as...