FAQs
What is an E02-00 trouble code and how can I resolve this?
An E02-00 trouble indicates a system low battery. Check to see that battery is properly connected. If the battery is properly connected, disconnect AC power and read the battery voltage. If the battery voltage is OK, disconnect from the control panel and read the charging circuit voltage. If charging circuit reads 0VDC, replace the control panel. If the charging circuit reads below 12-13 volts, begin to disconnect powered devices and zones. When a disconnected device or zone causes the voltage to return to normal, the device or zone may likely be the cause of the trouble code. In addition, a possible short to ground may exist, or an inoperative device.