Norbert J Watertown , WI January 11, 2015 Appliance: Jenn-Air Electric Downdraft Surface Unit C221-C Jenn-Air Cooktop C221-C: Exhaust fan motor froze up. How to replace Cooktop Downdraft Blower Fan Motor. Remove motor with case & squrill cage . replace with new motor. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes