STEP 1 Turn off power. STEP 2 Remove wire(s) from one of the element terminal screws (to isolate it so other circuitry will not affect the reading). STEP 3 Set the Multimeter to Ohms (Ω) and measure across the two terminal screws to get the resistance reading. STEP 4 Compare the resistance reading to the chart. The resistance should be +/-5% of the value in the chart below. If it is out of this range it should be replaced. STEP 5 Check to make sure the heating element isn’t shorted to the chamber or tank by measuring from the element terminal to the chamber or tank. It should be open or (OL). If there is a low resistance reading, it should be replaced.