Range Hood: Downdraft fan won't blow

A failed fan control switch, wiring failure, bad blower fan motor or broken blower wheel can prevent the downdraft fan from blowing.

Unplug the downdraft vent and check the motor wire harness connections. Reconnect any loose wires and repair any damaged wires.

If the wires are okay, turn on the fan control switch and check for continuity through the fan control switch using a multimeter (with the downdraft vent still unplugged). Replace the fan control switch if you don’t measure continuity through the control switch.

Replace the blower fan motor if the motor doesn’t run when activated.

If the motor runs but the fan doesn’t move air, check the blower wheel and replace if damaged.

These repairs may help solve your Range Hood problem:

Replace the downdraft fan control switch

Downdraft Fan Control Switch

If the fan control switch will not change the motor speeds or turn the blower motor off, replace the fan control switch. If the blower motor will not run, check the two limit switches for proper operation.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the downdraft blower fan motor

Blower fan motor

If the blower fan motor doesn't run when the vent pops up, check the limit switches and the fan control switch. If the switches are okay, replace the blower motor.

For manuals, repair guides, and specific part recommendations, enter your model number.

Replace the downdraft blower wheel

Downdraft blower wheel

If the blower motor has excessive vibration and noises when running, check for loose mounting nuts and fan bracket securing the blower motor. If the fan bracket and mounting nuts are tight, the blower wheel is likely unbalanced, replace the blower wheel.

For manuals, repair guides, and specific part recommendations, enter your model number.