Range Hood: Doesn't work at all

Lack of electrical power, a failed electronic control board, faulty user interface control, failed fan or light switches, a bad fan motor or bad light sockets can prevent the range hood from working at all.

Check the house circuit breaker and reset if tripped. If the house circuit breaker didn't trip, check the range hood's electrical outlet for power by plugging a small appliance or lamp into the outlet to see if the outlet works. If the outlet works, leave the range hood's power cord unplugged and check the power cord wiring to the range hood control. Reconnect loose power cord wires or replace the power cord if it's damaged.

With the power cord still unplugged, check the electronic control board for burn marks that indicate a control board failure. Replace the control board if you find burn marks on the circuit board. If your range hood uses a user interface control to start the fan and control the lights, you may need to replace the user interface if it isn't sending signals to the electronic control board when you press user interface buttons. A user interface control is a keypad and display panel that sends signals to the electronic control board through a ribbon wire cable when you press its selection buttons. DIY testing of the user interface control isn't available for most range hood models so you can't tell whether a failed electronic control board or a failed user interface control is preventing the range hood from working. If the electronic control board doesn't respond when you press the power button, you'll likely need to replace the electronic control. If the range hood still doesn't power up after replacing the electronic control board, you'll likely need to replace the user interface control.

If your range hood uses switches for the fan and lights, disconnect power and check continuity through the switches using a multimeter to see if the switches allow current to flow to the lights and fan motor when you turn on the switches. Replace the switches if you don't measure continuity through the switches when they're turned on.

If the fan switch or the electronic control board sends electric current to the fan motor but the motor doesn't run, replace the fan motor. If the light switch or electronic control board sends current to the lights but the lights don't work and you already replaced the bulbs, replace the light sockets.

range hood

These repairs may help solve your range hood problem

Replace the range hood electronic control board

Replace the range hood electronic control board

The electronic control board operates the exhaust fan and cooktop lights in the range hood. If the electronic control board is getting power but won't activate the fan or lights, replace it. The electronic control board also operates the sentry system on models equipped with that feature. Replace the electronic control board if it isn't operating the sentry system correctly.

How to replace a range hood electronic control board

If your range hood's fan or lights don't work, the electronic control board could be the problem. This step-by-step repair guide shows how to replace a range hood electronic control board.

Repair difficulty
Time required
 45 minutes or less
Read more
Replace the range hood fan motor

Replace the range hood fan motor

The fan motor spins the fan blade. If the fan motor hums or won't run properly when activated, replace it.

December 1, 2013
By Lyle Weischwill
How to replace a range hood fan motor

If your range hood's fan motor hums or the range hood fan isn't working, the fan motor might be worn out. This step-by-step repair guide shows how to replace a range hood fan motor in 30 minutes or less.

Repair difficulty
Time required
 30 minutes or less
Read more
Replace the range hood fan switch

Replace the range hood fan switch

Some range hoods use an electro-mechanical switch to control the exhaust fan. The fan switch activates the fan and controls the fan speed. If the fan switch doesn't work properly, replace it.

December 1, 2013
By Lyle Weischwill
How to replace a range hood fan switch

If your range hood fan won't turn on, the fan switch might be broken. This DIY repair guide shows how to replace a range hood fan switch in less than 30 minutes.

Repair difficulty
Time required
 30 minutes or less
Read more
Replace the range hood user interface control

Replace the range hood user interface control

The user interface control sends selection signals to the electronic control board to operate the fan and lights in the range hood. If the electronic control board doesn't receive the selection signals when you press buttons, replace the user interface control.

Symptoms common to all range hoods

Choose a symptom to see related range hood repairs.

Main causes: clogged air filters, air duct problems, fan motor failure, broken fan blade
Main causes: sentry feature trips due to high cooktop temperature, bad temperature sensor, electronic control board failure
Main causes: electronic control board failure, bad user interface control, light and fan switch failures, wiring failure
Main causes: bad fan switch, electronic control board failure, faulty user interface control, wiring failure
Main causes: lack of electrical power, bad electronic control board, faulty user interface, fan and light switch failure, wiring problems
Main causes: loose mounting screws, bad fan motor, damaged fan blade, worn fan motor bearings
Main causes: bad light bulb, broken light switch, bad electronic control, user interface control failure, bad light socket, wiring failure

Repair guides common to all range hoods

These step-by-step repair guides will help you safely fix what’s broken on your range hood.

December 1, 2013
By Lyle Weischwill
How to replace a range hood fan switch

The fan switch activates the fan motor in the range hood. If the fan switch is defective, replace it using the detailed steps in this repair guide.

Repair difficulty
Time required
 30 minutes or less
How to replace a range hood electronic control board

The electronic control board activates the fan and lights in the range hood. If the electronic control board is defective, replace it using the detailed steps in this repair guide.

Repair difficulty
Time required
 45 minutes or less
January 20, 2013
By Lyle Weischwill
How to replace a range hood light socket

When you replace a light bulb and it still won’t work, the socket is likely defective. Use the detailed steps in this repair guide that show you how to replace it.

Repair difficulty
Time required
 15 minutes or less

Articles and videos common to all range hoods

Use the advice and tips in these articles and videos to get the most out of your range hood.

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