E2 explanation is written here in the middle of this page:
Sadoun Powertech VBOX III
V3000 Positioner DiSEqC 1.2 Compatible
Here it is:
E2 Message on Display:There is only one error message -- E2 message for GBox. E-2 Message means NO PUSLES detected.
Possible causes:
- Re-check the wiring connection from the actuator to the GBox
- Make sure the actuator is not stopped due to Mechanical Limit.
- Check if the Reed Switch Sensor in the actuator is broken.
- Check if the Motor is broken.
- The Fuse inside the GBox might be broken.