Thanks Tony
I will call a friends engineer as I had no intention on messing around with it myself just really wanted to check it wasn't something simply like an adjustment I could do (silly I know).
Cheers
Hi, Newbie with a problem. I hope someone may be able to shed some light
I have an old Ariston boiler microcombi 23 mffi
1st after turning on the heating to constant it trips off after a couple of hours i.e. to the red light standby flashing, when the reset button is pressed it works again...