"Andy Hall" wrote in message
...
On 2006-12-27 09:30:31 +0000, "Vass" said:


The thermocouple to which you refer is a flame failure device designed to
turn off the gas in the event
of the pilot failing to light or remain alight.

If the boiler is overheating, the reason for that needs to be
investigated.

The thermostat turns off the main burner when the water is hot enough, but
shouldn't turn off the pilot.

It would be safer (and legal) to call in a heating engineer to fix it.


ok so the probe is connected to the thermostat
so what is causing the boiler to overheat if the thermostat is working
correctly?
this makes no sense
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Vass
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