Need hep! Yesterday we had a mobile rv tech do a service on our water heater, just thinking it was good preventive maintenance, even though water heater was working just fine. After the rv tech drained and flushed the tank we decided it was a good idea to replace the heating element, so he replaced it with a highper amperage one than the original. Well needless to say it got hot to the touch but was not heating water. Four hours later he returned and replaced the new one with the old one. No hot water still after all night. Now what do we do?