Ventilation Hood Blower Does Not Operate


  • Installation issue
  • Wiring
  • Blower
  • Blower control switch
  • User interface (control)
  • Control assembly
  • Circuit board
  • Transformer


  • Hood blower does not turn on.
  • Ventilation fan does not work on all speed or power settings.
  • Hood fan variable control does work, either turns on or off only.
  • Ventilation blower runs as soon as power is supplied, does not turn off.
  • Blower stops working after running for some time.

Steps to Verify Issue:

  1. Verify unit installation. Refer to the product Installation Guide for further information.
    • If equipped, make sure the air diverter is installed properly.
  2. Turn the home circuit breaker to the unit off for 10 seconds then back on again. Retest the unit operation.
  3. Make sure blower motor plug is plugged into outlet in the hood.
    • Hoods may use one or two blowers.
    • Each blower has its own power cord and receptacle.
    • There are two receptacles in the hood.
    • If a hood has only one blower, only one receptacle will be used
  4. Ensure filters are clean and installed properly.
  5. If visible with filters removed, make sure damper is opening when blower is on. Damper may be audible as it opens and closes; listen for clicking noise of the flaps.
  6. Make sure end cap is not blocked.

See also:


If these steps do not resolve the issue, no further troubleshooting advice is available. Contact Factory Certified Service to schedule an appointment for repair.

Thank you for your request. A Customer Care representative will contact you.

An error occurred. We were unable to submit your request.

Related Questions

We're standing by with answers

Whether you're shopping for appliances or have questions about those you already own, we've got the resources you need. Talk directly to a customer care expert at the Sub-Zero, Wolf, and Cove service center, or connect with an appliance consultant at an official showroom near you. Get quick answers online, or reach a certified service provider or installer. And much more.

Call us at (800) 222-7820

Customer Care and Support