Found bottom Convection-Oven can not shutting off when door is open and door not latching correctly. Needs door switch and ball catch. 10-15-18 Replaced roller catches and door switch. Had difficulty removing access cover due to top unit sitting on top of it. Turned unit on. Tested for switch and catches. Found okay. Unit is operating correctly at this time. **Travel Charges Billed on wo# 166690**