"Smithtv" wrote in message
...
Hi

I`ve got one of these boilers about the same age and if I remember
correctly, I
think I had a similar problem around 10 years ago.

The fault was due to the flue extractor fan micro-switch failing meaning
that
the boiler didn`t recognise that the fan was drawing out the exhaust fumes
and
so it switched off.

If it was my boiler, I would replace the exhaust gas differential switch and
the relay. They are both getting on.


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