There appears to be no air coming from the flue to activate the pressure switch. (the pressure switch works with gentle pressure blown down the pipe) the pipe is clear and no blockage appears in the flue when air blown into the flue. the fan works ok Will there be a problem inside the flue?
Ravenheat combi-boiler CSI85AT
- Thread starter john120
- Start date
Being part of the combustion process no one can advise you other than to call out a heating engineer.
DIYnot Local
Staff member
If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.
Select the supplier or trade you require, enter your location to begin your search.
Are you a trade or supplier? You can create your listing free at DIYnot Local
