James December 18, 2019 Microwave oven UMC5200BAB fan turns on when door is opened. Turns off when door closed. Appliance still works when used. As if a door switch is stuck? Something else? Thanks. James
1 Answer James, the issue is in the door switch(s) or the door switch bracket has shifted and the latches aren't activating the switch properly. With the door open, the Primary Interlock Switch (Top Switch) should have an open circuit, The Secondary Interlock Switch (Bottom Switch) should have an open circuit and the Interlock Monitor Switch(Middle Switch) should have a closed circuit, and the door sensing switch should have an open circuit, Check the door switch circuits and wires and replace the appropriate switch(s) Read More...
Lynn July 18, 2016 for Model Number UMC5200BAS What does _SE on the panel mean the buttons dont work. Does it need a control panel or the keypad.