You can check the connecting wire between the main control board and the operation panel to see if it is in poor contact or broken. Or the main control board or operation panel is faulty.

Yierkang wall-breaking machine has intimate voice broadcast function, and the operation steps are clear at a glance. Heat evenly and do not paste the bottom, stir quickly, fine and slag-free! Multi-purpose, cold and hot, intelligent touch, one-click wall breaking to release nutrition.