Still feeling out the nuances of a recently purchased house...
Turned on the fan/vent above the oven today, and wondered about the venting. Looked in the cabinet above it and found that the venting had been removed and the hole sealed up. Went to the attic, and found that the cut into the attic had been filled in and thick "great stuff" filled the gaps.
Do electric ranges not need ventilation thru the attic to the roof? Is this OK?
Electric ranges/ovens do not need vents for removal of combustion gases since there are none. But it is a good idea to vent to remove cooking odors and smoke. The best way is to vent outside, but recirculating fans with charcoal filters work fairly well.
Don't know about your codes, but with ours you have to have mechanical ventilation in the kitchen, otherwise you can get a condensation problem. I've put ours over an electric range in an inglenook. The problem with our code is that it hasn't told my wife she has to switch it on.