1, the thermostat is broken. If the heat preservation indicator is on when plugging in, it will not be heated. There are three reasons.

2. Under normal circumstances, the measured power supply of the heating element is about 126V at slow speed and about 230V at fast speed. Abnormal voltage is the problem of several components on a small circuit board, which is easy to repair.

3. For the heating element, the new resistance measurement method is only 1 10 and 450w W, and the old value of 102 is 500 W. The resistance is too large, which is far from the change. Buy a 20-yuan non-stick body coating.

4. The measuring resistance of the new 130 degree thermostat is 0.8. If the power supply of the heating element is 220v, the resistance of the heating element is normal, and it can be concluded that it is a small problem of the printed circuit board assembly.