I have a Vailant EcoTec Plus 824. That has started to make an intermittent sort of hum rather like a trombone. I have a video of it which hopefully you can see below....
There has been a separate issue with the boiler recently where the outlet for the condensate i.e. the kitchen sink, was blocked which was causing the condensate to back up. That was fixed a couple of days ago, so not sure if it could be related..?
Any thoughts would be most welcome.
There has been a separate issue with the boiler recently where the outlet for the condensate i.e. the kitchen sink, was blocked which was causing the condensate to back up. That was fixed a couple of days ago, so not sure if it could be related..?
Any thoughts would be most welcome.