Motorola mc4000 User Guide - Page 23

Troubleshooting Tips • Problem: Temperature or humidity sensor problems • Possible causes: Direct sunlight, nearby heat sources, nearby sources of moving air, blocked sensor vents, foreign material inside or on sensor • Solution: We recommend that you try moving your sensor to a different location. The sensor will work best when there is space around it and it is not boxed in by other objects or furniture. • Problem: Ambient light sensor problems • Possible causes: Blocked sensor openings, unwanted shadows, foreign material inside or on sensor • Solution: Be sure that there is nothing blocking the sensor and that it is located in a location with exposure to light that you are tracking. • Problem: Short battery backup time • Possible causes: Battery not allowed to fully charge, battery needs replacement • Solution: Allow battery to charge for a minimum of 8-10 hours and be sure that the battery icon is green. For details, look at the battery history graph. Replace the battery if the problem persists. If the included battery's backup time is too short, consider a higher-capacity external battery as discussed on page 3. • Problem: Battery not charging • Possible causes: Battery switch off, battery connection problem, battery needs replacement, AC power off • Solution: Check the Dashboard of the app and confirm whether AC power is on (USB port is providing 5-volt power). Next, unplug the sensor from the USB port, and confirm that the battery switch is set to "1" (ON). If this did not resolve the issue, then remove the two screws securing the back cover, pull off the battery holder, and remove the battery. Then re-insert the battery and re-attach to the sensor and plug it back in to USB. If the problem persists, try replacing the battery. 22