- January 24th, 2020, 12:58 am
#6894
Any ideas what could be causing this issue? (See video)The boiler has been making this noise since xmas and has been serviced since then by a local heating engineer. The issue has got worse progressively. The boiler has also had a new oem fan fitted to try and address the issue to no avail...... Just as an observation, this only seems to occur when the boiler is on a low output as it never seems to do it when its going full chat. Awaiting your input with baited breath!