customer stated Conveyor Oven upper switch error. opened side and turned on found upper fan motor not running but had power was able to manually start motor. found bearings assembly making a lot of noise. also unit did not light the first time it tried. unit needs replacement blower motor and bearing assemblies. will also order new igniter and cable and cooling fans. unit is OK for use but may not start up again after it gets hot. 10/14/19 unit was off. tore back of unit apart. replaced bearing assembly on both top and bottom. replaced upper motor. also replaced both cooling fans and ignition system. tested. unit is working OK at this time. OK for use.