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Battery Empty, Attach Plug” – Why does the message remain after I attach the AC power supply?

April 26, 2017AC battery message PLUG power remain supply

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Battery Empty, Attach Plug” – Why does the message remain after I attach the AC power supply?

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If the concentrator is run until the battery is depleted, the system is shut down (oxygen production is stopped) and this message is displayed. Even if the user connects the power plug at this time, further action is required. In order to cease display of the message, the user should press the ON/OFF button to shut the unit down completely. The user should then press the ON/OFF button to restart the concentrator.