I just rented a house and I was told the old oven worked. It's a double oven model. A gas Tappan 72-3657-23-12.

The top oven works fine, the range works fine. The bottom oven light comes on but the oven itself is not heating up.

It was working up until the house became empty and the workers were moving things around to paint, etc.

Any ideas on what the culprit could be?