Lee S Fort Wayne , IN February 02, 2015 Appliance: Samsung Dishwasher DMT800RHS/XAA Samsung Dishwasher Dmt800rhs/Xaa / : E9 error code. How to replace Assy-Case Sensor;Dmt800,. Disconnect electrical and water supply and remove side support screws. Pull unit from cabinet and remove sheetmetal shield on the left side. Remove baffle cap on the left inside of the machine (note arrows that indicate which way to rotate). This allows the sensor to be pulled back to remove the electrical connectors and tube hose clamp. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes