Paul S Livonia , MI March 06, 2015 Appliance: Maytag Electric Range MER6770AAB Maytag Range Mer6770aab: The broiler in the upper oven of a maytag gemini did not work. How to replace Limit Switch (Primary). I removed the oven back and I verified conductivity of the boiler element with an ohm meter. I then checked for a loose connection on the switch. The switch lead on one side was loose in the body of the switch. I replaced the limit switch and the broiler now works. Replacing the switch is simple but you may need to open the wire connecting lug as you want it to fit snugly but not force it on as this switch seems a little flimsy. 3 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes