Lumenis Error/Fault Code “E3”

Error/Fault Code “E3”: When operating one of the Lumenis-Lightsheer models, if this error message appears on screen, that means the device has a malfunctioning central processing unit (CPU). Unfortunately this fault code means that the embedded computer board is in need of replacement. With a failed memory, the device will be unable to properly function and must be replaced before being able to use your LightSheer again.