The appliance is signaling an issue, likely due to a malfunction or blockage.
The appliance is signaling an issue, likely due to a malfunction or blockage.
Unusual is the case, especially if it's quite old—likely it’s no longer functioning.
It seems the bearings in the fan are worn out and the blades are rubbing against the mount or something similar. For those new to this, begin with the fan itself. A screwdriver can help you detect the noise; place the tip on the motor and position the other end near your ear or just behind your head. This will transmit the vibrations clearly so you can identify the issue. Let us know what you discover. Good luck!