Any gas advice out there ?
Our gas boiler is behaving as though the thermocouple has packed in but it's showing 30 mV when hot which I think means it's OK. The bit I don't understand it the flue gas thingy. Should it generate any voltage? Can anyone tell me what resistance should be across the contacts? Any suggestions?
As usual, because it was working this morning, everyone thinks it should be an easy fix.
I might replace the thermocouple anyway before calling in the cavalry.
TIA
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