1, the power plug is not plugged in or the contact is poor. According to the instructions, find the fault and troubleshoot it. If you can't handle it, you can find the manufacturer's after-sales service.

2. If the power switch of the air fryer is in poor contact or damaged, find the manufacturer for after-sales maintenance or replacement.

3. If the internal parts of the air fryer are damaged, find a professional to repair or replace them.