i went to repair one yesterday and today. i have currently replaced the DHW flow switch as it was definitely faulty and now it is working fine in that area. But I have now discovered that every now and again the boiler will go to lockout (flame failure lights up). I suspect it is overheating and the water gets pretty hot. I have a few ideas what might be causing it like primary heat exchanger sludged up or blocked up but i took a sample of the CH water and it was as clean as drinking water. So maybe it isn't sludged up.
The reason why i am posting is i want to know if any of you guys and gals have had any dealings with this boiler and maybe point me in the right direction. Many thanks
The reason why i am posting is i want to know if any of you guys and gals have had any dealings with this boiler and maybe point me in the right direction. Many thanks