To test a sauna heating element to see if it is working properly, disconnect it. Take a multimeter and connect the leads on the multimeter to the terminals on the heating element. \
The resistance noted by the meter indicates whether the element is working or not. The resistance you need to see is the value of the voltage powering the element times two, divided by the amount of power the element uses. \
For example, if the element is receiving 230 volts of power and it outputs 800 watts of energy, the resistance should be 66.1 ohms. If the reading is much higher, the element is not functioning properly. \