Fix Fault Saunier Duvall

My boiler steparts up but stops after 10 seconds.i adjusted the pressure to bring it up to 1bar but it went to 2.7.i bled radiators and for it back down to 1bar but it still won’t fire up.green ligh ... more

My Heating system stop working and give me a f1 error. Anyone know how I can solve this problem?

What is the thermal rating of Saunier Duvall 620 combi boiler.Looking to replace it

the heat on my radiators keep going down when the light on my boiler goes off

Hiya. Hot water operates fine however....demand for heat , boiler fires up ok, temp display increases to 77 degrees within about 10 seconds from cold, can see gas flow decreasing then flame off. Water ... more

For most of the year everything is ok with my boiler (saunier duvall thermaclassic 24e), but when its really really cold, i wake up to a boiler that lost water pressure during the night and is off by ... more

the dhw flow rate has dropped drastically on my saunier duvall sd620f boiler