1, the electric heating plate is broken.

2. The circuit board is broken

3. The intermediate temperature controller is broken.

4. The problem of the circuit connecting wire should be repaired and returned.

Sometimes it may short circuit, so let's bask in the sun.

Excuse me, how to measure the electric heating plate?

Remove the wiring on the heating plate terminal;

Measure the resistance value between the two terminals with the resistance range R× 100 or R× 1k of a multimeter to judge whether the heating wire is burnt out;

If the heating wire is not burnt out, measure the resistance between the heating wire and the heating plate again. If the resistance value is small, it means that the insulation between the heating wire and the heating plate is damaged, and this heating plate cannot be used. If the resistance is close to open circuit or very large, then this electric heating plate is good.