my boiler fires up and runs for a hour at a time even though the programme says it is turned of and the overide has not been pressed. it's never at the same time and it does this 3 or 4 times during the day and god knows at night. any ideas
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oil boiler with a mind of it's own
- Thread starter jjjj
- Start date
Zone valve suck open ??
What zones do you have ?
Do you have gravity hot water?
Do you have gravity hot water?
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