ferroli f05 fault

[fixter1]

just been to this fault only fashes up every few days ive checked air pressure switch what sames to be working ok but cant get it to fault everytime i go it runs fine,thanks

 

[Puddle]

Intermittent faults are bummer and getting more and more common

On this boiler ,would see if system cleaned out properly before it was fitted as maybe diverter sticking slightly or slight blockage causing boiler to over heat effecting flue stat operation,also check burner set up correctly as maybe to much output

imho