Kenneth K Newtown , PA September 19, 2016 Appliance: Maytag Electric Range MER6770AAW Maytag Range Mer6770aaw: Broiler / toaster element not working on top oven. How to replace Limit Switch (Primary). Determined with basic troubleshooting with my Ohmmeter that the limit switch was burnt out. I replaced the limit switch on the oven. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes