I recently replaced the heating in my water heater (Suburban 6DWE). Everything has been really great! In fact we have not had to use the propane side of the water heater since we replaced the heating element. Today I have a strange issue. We camped this past weekend and when we got home I went to plug in the rig and the surge protector indicated a reverse polarity issue. It has not been there before, it has been normal. I did some troubleshooting and have determined that it is the water heater, electrical side. How does a device that has been working correctly all of a sudden develop a reverse polarity issue? I've run into these before and it is usually immediate after reactivating a circuit. I am unsure as to how this could happen except perhaps a cut in a hot wire causing a strand touch anothe strand in a neutral wire allowing enough voltage to to go down the neutral to trigger the sensor to light. Anyone else ever have this happen?