Hi everyone I have a stack Ferra 830 and unlike previous poster inside mine is in good nick I cleaned it out no cracks and such but there’s a little on/off button down the bottom right hand side in the vents, just wondering if it is a hardwired heater and it powers the fan that way or if it does nothing until there’s an actual fire inside? I turned it on and nothing moved and no sounds of a fan. A manual for this one would be amazing also as I can’t find one anywhere.