The sensor is open. If the resistance of the sensor is too high, it will cause the health pot to display E 10 error code, because Mijia health pot is made of high borosilicate glass, which has low temperature resistance and will break if the temperature is too high. The power is generally low, about 400W, so long heating time may cause the sensor of Mijia health pot to display E 10 code or electronic components to be short-circuited.