All of my external sensor graphs have disappeared and the sensors are showing up as "Unplugged" in the Display page. What's wrong?

All of my external sensor graphs have disappeared and the sensors are showing up as "Unplugged" in the Display page. What's wrong?

The problem is most likely that one of your external sensors has a crossed wire. Follow this procedure to test the sensors: 1. Unplug all of the sensors and check the "Remove all unplugged devices" check box on the Display page. 2. Plug in one sensor and wait for it to be detected. 3. If the sensor works, leave it plugged in and plug in another sensor. 4. If the sensors stop responding, the last sensor to be plugged in is faulty. If your unit is under warranty, call support for a replacement.