I have a sime boiler c/w a nu-way nol3 which is top class shape. I know that is a flue problem, It will lockout once a month in the moring time. I have measured to draft cold and hot -reading cold +1 mbar -reading hot -4mbar. Any tips oilman?
sime oil boiler locking out (flue problems)
- Thread starter DUAL-FUEL
- Start date
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