Broan Range Hood Fan Not Working. Swish around with a brush (not your hand because it's too hot!) until the water is nice and soapy. In order to find out if the fan motor has power, one can use a multimeter to test.

Make sure the blower wheel is spinning freely when the fan. My grille sometimes does not respond to. You need to turn the power off and actually put your hands on the wiring to see if a wire has come loose.