1. Connect the ground wire as required and check whether it is correct;
2. Check and repair if such an event still occurs, it is recommended to replace it;
3. The immersion heating tube is damaged and replace the electric heating tube of the same specification;
4. Properly clean and dry the stainless steel heating tube;
5. Check the immersed heating tube for disconnected wires and re-weld them firmly;
6. Clean and dry properly;
