I have a Glowworn swift flow 80 fanned flue boiler and the fan is humming?
The fan is humming all the time and doesn't go off - what could this be. Everything else is working ok it's just the seems to be the fan. I know it's supposed to be on but it doesn't go quieter when the bolier is not in use. Should I replace it and how much do they cost.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.