What does a ‘System Error See Manual’ message mean?
This message is displayed on Inogen oxygen concentrators. The concentrator is experiencing an error but is capable of continued operation. Try removing and re-inserting the battery. At this time also check external power connection. If the message persists the concentrator may need a service.
This is a medium-priority alert message and is accompanied by a triple beep repeated every 25 seconds, and a flashing red light.