Response measures: immediately shut down the device, connect to the standby oxygen source and call the home health care provider.

    Question 2 sound alarm has been ringing, LED lights are not bright.

    Possible reasons: the device has been opened but not working. Usually indicates that the device is not plugged in the power supply or power failure.

    Measures: check the power outlet and ensure that the device has been plugged in. If the problem persists, please connect to the standby oxygen source, and call the home health care provider.

    Question 3 red LED lights have been lit, sound alarm has been ringing.
     Possible cause: the device detects a system failure.

    Response measures: immediately shut down the equipment for 5 minutes. Boot device, if the situation is still there, please shut off the device, connect to the standby oxygen source, and call the home health care provider.

   4 LED yellow light has been lit, the red LED lights flashing, voice alarm beeps regularly. 
    Possible cause: the device detects the condition of the flow of oxygen.

   Response measures: according to the next page troubleshooting guide for operation. If the fault removal measure can not correct the alarm condition. Please connect to the standby oxygen source and call the home health care provider.

   Question 5 yellow LED lights have been lit, red LED lights out, no sound alarm.
    Possible cause: the device detects the condition of the oxygen flow (only OPI). 
   Response: continue to try this device, but please call the home health care providers, to inform this situation.

   6 yellow lights flashing LED, red LED lights, sound alarm beeps regularly.
    Possible cause: the device detects the condition of a high oxygen flow.
    Response: the flow rate is reduced to the level of the specified level, waiting for at least 2 minutes, if the situation remains, please shut off the equipment, connect to the standby oxygen source, and call the home health care providers.