Hi, I have a Ferroli F30 combi boiler approx 5 years old, about twice a day when the system is not on (water or heating) it has started to makes a loud buzzing/vibrating noise for about a minute or so. It is loud enough to be heard downstairs.
I have read the manual but cannot see what this may be - is it just checking itself or filling up or is something on its way out? The last service was 4 months ago - is something loose?
The system is working fine for both water and heat.
Many thanks
Ian
I have read the manual but cannot see what this may be - is it just checking itself or filling up or is something on its way out? The last service was 4 months ago - is something loose?
The system is working fine for both water and heat.
Many thanks
Ian
