The lights or controls may work, but the blower remains silent when a fan setting is selected. Range-hood performance depends on the appliance, filters, ducting, and installation, so the sound of a running fan alone does not confirm proper ventilation.
Common causes
- A fan switch, touch control, or control board is not sending power
- The motor capacitor or blower motor has failed
- A connector or internal wire is loose or heat-damaged
- The blower wheel is jammed by debris or mechanical damage
How the problem is diagnosed
A technician verifies the selected mode, supply to the fan circuit, switch or control output, capacitor condition where fitted, motor resistance, and whether the blower turns freely. The sequence prevents a failed control from being mistaken for a motor fault.
Electrical and airflow findings are considered together. Appliance Repair Pro explains the diagnosis and provides an upfront estimate before approved work begins.
Information to prepare
Note whether the lights work, whether any fan speed responds, and whether the fan failed suddenly or became difficult to start over time. The full model number and a photo of the hood and duct arrangement can help identify the correct parts and service scope.
Repair or replace?
Switches, lights, capacitors, and some motors are often serviceable when parts are available. Replacement may make more sense when the hood has extensive grease damage, an unavailable integrated control, or an installation that cannot deliver adequate capture. Diagnosis helps separate an appliance repair from a duct or installation issue.
