Saunier Duval Air flow rate safety device Fault Code

Also written as AIRFLOWRATESAFETYDEVICE — same fault.

The Saunier Duval Air flow rate safety device fault code means: your boiler has detected that air cannot flow correctly through the exhaust flue, so it has safely shut itself down to prevent any harmful gases from building up.. It appears on 3 Saunier Duval models in our database.

Technical description: If an obstruction, even partial, of the flue occurs, the built in safety system of the boiler will turn the boiler OFF and the fan will continue to run.