I am going to go check this unit out account customer says no ice. so i want to know how to get ice maker in diagnostic mode I know that on some icemakers you can take the front cap off and insert the wire like for instance on the n and v slot to check the valve and the mold heater on l and h slot and so on so i dont know if this would be the same I am thinking that if the water tube going to icemaker is frozen then it would be the valve gone bad so if any of you guys out there have any input on this please give me some info oh the icemaker for this unit pt number wr30x10093 thanks