The old version digital pressure sensor on the EV5 series valves have shown more failures than we where comfortable with. Airpower has changed manufacturers of this device and the new supplier has proven to produce a much more reliable piece. Unfortunately, when the digital sensor has failed, the only option is to return the valve for a replacement. This is not something the end user, nor Dreamworks can repair. If your sensor has failed, please contact your supplier for a replacement valve.
Current valve Version 4.0 contains this new hardware in addition to the ability to now view on board battery voltage. The new hardware is easily identified by looking at the bottom of the EV5U-PRO Valve. See image below for clarification.
Todd