The general heating plate is composed of electric furnace wire, when detecting the multimeter can be played to ×10 resistance to measure the resistance value of the electric furnace wire, the resistance value of the general electric furnace wire plate is between several euros and tens of euros, if it is 0, it indicates the internal short circuit, if it is several hundreds of thousands of euros to infinity, it indicates the internal break, can not be used.
First, power off, and measure the two terminals of the heating disc with the 10 000 ohm resistance level of the multimeter. The measurement results found that the multimeter showed no resistance value of infinity, saying that the heating disk had been burned out, and the internal circuit had occurred.