| The machine does not seal | The fuse blown out | Replace the fuse with a new one |
| The heating element is damaged | Replace the sealing blade with a new one |
| The thermal expansion protection gap is too small | Keep the gap to 3.5 mm between the screw and the blade clamp to protect the sealing blade. |
| Sealing Transformer damaged | Replace the transformer with a new one |
| The heating element heats up, but the film does not cut off properly | Partial damage for the heating element | Replace the heating element with a new one if damage found. |
| Something unknown attached on the sealing blade | Clean the sealing blade by a piece of dry cotton and the release agent |
| The Teflon belt damaged | Replace the Teflon belt with a new one |
| Neoprene rubber is damaged | Replace the neoprene rubber with a new one if its surface is not smooth |
| The screws for fixing the ceramic slot of the sealing blade found to be unfastened. | Level the ceramic slot and fasten the screws |
| The conveyor belt does not move | The conveyor time set is too low | Increase conveyor time |
| The conveyor section fuse blown out | Replace the fuse with a new one |
| The conveyor belt tension too low | Tighten the belt |
| Defective conveyor motor | Replace the motor |
| Defective capacitor | Replace the capacitor |
