Allen S Opp , AL April 04, 2021 Appliance: Samsung Microwave SMH1622W/XAA-01 Error code on control panel The fix was easy. I ordered the PCB assembly (DE92-02434B) and the control panel (DE94-02411B) and swapped them out. Took less than 15 minutes. I determined the problem was because of steam from cooking was getting into the control panel and causing it to throw the error code. The first time it happened, I pulled the control panel and dried it out as best I could and let it sit out overnight. Put it back together the next morning and it worked for another year or so before throwing another code. I tried the same method this time around too but it did not work. Replacement was the only option unless I wanted to buy another microwave. This was the cheaper option. The unit is just fine, just needed a little love and a new control panel assembly. Thanks, Appliance Parts Pros! Read More... 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes Tools: Screwdrivers