Recent content by karlbutler1

Thanks for the reply, much appreciated ! however I am a novice with limited understanding of this. where, is the thermistor, how do I replace it and is an expensive item ?? regards Karl

Can anyone help please? I have a Ravenheat HE120 low nox boiler which has developed a problem. On heating cycle the ingnitor kicks in OK and the flame lights. It only stays on about 15-20 secs and the system switches off. immedialtey the ingnitor kicks in again and the burners light for 20...