There is something wrong with the electric eye. E04 appears, indicating that there is something wrong with the electric eye of the machine. It may be that the sensing area of the electric eye is dirty, the strength of the electric eye is not enough, the electric eye is broken, the sensing area of the sealing film is not firm, and the motherboard is faulty. The processing steps are as follows:
1. Whether the photoelectric position can sense the carton.
2. Whether the sealing machine is ventilated.
3. Whether the gas cylinder is in good condition.