Troubleshooting the JennAir C228 30-Inch Cartridge Cooktop

The C228 is a 30-inch electric cartridge cooktop with its downdraft vent in the center of the surface, installed as a drop-in on an island or against a wall with the duct exiting below. Cooking and ventilation run on separate circuits, and that split is what guides every visit.
If food is not cooking, we are looking at the cartridge, its switch and the terminal connection. If the kitchen fills with steam, we are looking at the trap, the duct and the blower. Mixing the two up is how people end up replacing a good motor, so we confirm which side is failing before anything is ordered.
Switches and knobs on a cooktop this old wear unevenly, so one burner may feel loose or click while the others are fine. Bring us the model plate details if you can find them. We quote in writing before work begins and stand behind the repair for 30 days.
They run on separate circuits, so we test each one on its own. If the element has power and does not heat, it is the cartridge. If the cooking works and the air does not move, we go to the blower.
The knob may have worn on its shaft, or the switch behind it may have gone loose. We check the switch for continuity and fit before replacing either, and you see the written price first.
We inspect the accessible part of the duct and the grease trap, because both affect airflow. Major ductwork changes inside walls are beyond a repair visit, but we tell you what we see.
Book in about a minute, or call the desk. Same-day windows inside the Loop on most days, next-day across the rest of Houston.