Hello,
I have a Baxi Luna 310 FI boiler, 6 years old and it gives me a fan/flue fault when the temperature is very cold outside. After multiple attempt I manage to reset it it, then it runs with no problem for a few weeks and then it happens again, usually in the domestic hot water cycle but now in heating cycle too, no hot water no heating in the middle of winter.
Where should I look for the problem?
Thanks
John