Frank L Amarillo , TX January 26, 2016 Appliance: Model JENN-AIR-C221 (COOK TOP) One burner on cook top would only turn on at "hottest" setting at any setting Replaced the surface unit switch. Easy fix, 30 min. job. Appliance Pros found and sent the right part for my needs. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes