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Hi all, just wondering if anyone can help, on this one. The problem I've got is the heating flow pipe from the 3 port valve (A) gets hot & rads get hot when HW only demand. Heating works fine, it turns on/off at programmer and on/off at room stat Hot Water works fine, it turns on/off at...

Yes I changed the thermistor and it works. Thanks Dave, everything all sorted and back to normal, once again many thanks.

Thanks Dave I will try that and let you know.

Hi folks, still haven't got any ideas on this, I read on here someone had a simlilar problem which tyrned out to be heat exchanger, like i said i have changed this to no avail. I have now put a thermostatic shower on and it so far seems to have sorted the problem, although i have only had two...

Hi folks, I am having a problem with my Alpha CB28 Combi. It has only occured within the last month or so. When I run the shower, a manual mixer, the boiler fires up fine. It will stay alight for varying amounts of time and will turn off. It then fires back up again within about 10-15 secs...