The reason may be the following 4 points and solutions:
1. The plug of the power supply rack is not fully inserted into the bag socket, and the user inserts the plug of the power supply rack into the bag socket and fully couples it.
2. The temperature of the bag is high, the thermostat is not reset, and the user can wait for the temperature of the bag to drop and the thermostat is reset
3. The bag body expands, the power supply frame is disconnected, and the user exhausts according to the exhaust method in the manual
4. If the power cord is not connected, the user inserts the power cord plug into the power socket