If the light is coming on, but the fan isn’t, your problem is with the fan switch or the fan motor. You can access these from under the hood, without removing it. Check the fan switch (in the on position) for continuity. If there is continuity, then replace the fan motor.
For more information on Range Vent Hoods, how they work, common repair problems and solutions, visit APWagner’s Range Vent Hood Repair Center.
If you need a replacement part for your range vent hood, check out APWagner’s extensive selection of Range Vent Hood Appliance Parts.