Thorsteen H Gettysburg , PA November 15, 2016 Appliance: Samsung Dishwasher DMT400RHB/XAA Samsung Dishwasher Dmt400rhb/Xaa / : Would not run a cycle unit would take on water and then drain code was incorrect level. How to replace Assy-Case Sensor;Dmt800,. Ordered a sensor unit. Sits on side of DW. Pulled dishwasher out of recess. Shut off power and water. needed screwdriver, pliers for hose clamp and strap wrench to remove grill which holds unit in place. Removed and replaced 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes