I didn’t check the lower element yet. I can hear the upper one when it energizes, so I know that it is working. I found some info on another site yesterday, but I did not understand what setting they were referring to on the multimeter.
Disconnect one of the element wires and set a multimeter to RX1000 (resistance times 1,000). Touch one probe to an element mounting bolt and the other to each element terminal screw, in turn. If the tester displays anything but infinity (open circuit), replace the element.
Can I just disconnect a wire and use a standard continuity test?