Actions: Replace the atomizer with a new one.
2# Cause: Battery pin or atomizer pin is dirty
3# Cause: Screw thread gets dirty
4# Cause: Battery pin is pushed down
With an open circuit, when pressing the fire button after the Power is unlocked, it shows 1 long red followed by 3X short red blinks.
Actions: Replace the atomizer with a new one.
2# Cause: Battery pin or atomizer pin is dirty
3# Cause: Screw thread gets dirty
4# Cause: Battery pin is pushed down