. . Stop baking, there is something wrong with the bread. No matter how it is set, it will burn, indicating that the electric heating system is out of control. The baking system consists of electric heating tube, temperature sensor and heating control unit circuit, and the heating time is controlled by microcomputer program. If any of them breaks down, the heating will be out of control. Electromechanical integration equipment, people who have no maintenance experience, had better send it to a special point for maintenance.