Probably see from the time of the message just been woken up by the
expansion tank overflowing from the loft- sorted the blocked- the pipe that
is curved that runs in from the top missed the tank-assume this is a safety
overheating pipe-boiling water was running from it-Why?? Radiators red hot.
Emtied some hot from the tank(its a soild fuel boiler, left on over night,
water stopped, then turned rads o by moving down the therm on the tank and
more boiling water from the pipe. HELP. Surely pump is working-why did water
get so hot as to enter the expansion tank? therm seem to work-did it just
sticks, and help advice appreciated.
Fax no. 08701339568
(Outside UK fax 448701339568)
That problem is called pumping over. You should be able to feel and hear the
pump stop and start as the thermostat is turned up and down past the set
temperature. If you don't get help here try the uk.d-i-y newsgroup.
Solid fuel heating works differently, because you can't turn the
"burners" off. It could be that the water in the boiler actually
boiled. Back when my parents had solid fuel heating, it was
typically around 3am when the boiler boiled and you started
hearing the odd bubble rising up the pipework and out into the
expansion tank, but I don't know how yours works.
You might want to check that there's nothing stopping the boiler's
damper fully closing, which would make the situation worse.
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