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Andy Burns[_13_] Andy Burns[_13_] is offline
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Default I have an old Potterton fireside black beauty 35/51 back boilerkeeps turning off pilot light

Bob Minchin wrote:

kennygw wrote:

get to where it will flame down in normal operation then
after about 20 seconds it stars to hiss then the pilot light goes out.
Anyone got any idea what is up with it?


Highly likely that you need a new thermocouple.


Sounds about right.