Ariston Euro combi burner goes out

Ariston Euro combi SX20 nat gas Ch runs for approx 30min then burner goes off and the red button lights up then reignite the boiler the burner starts immediately but the igniter keeps sparking and the burner goes off in 10 to 20 seconds leave the boiler for
approx 15 20 mins then you can get hot water only enough to fill one bath then you have to wait and start the whole process again

There are several possibilities, including a sticking gas valve.

However, all these are gas related problems and therefore you should engage a CORGI registered engineer to identify the exact cause and fix it.

Tony Glazier