If your Z2 is shutting off in the middle of the night, it may be caused by the Auto Start/Stop feature misinterpreting a leak or your mask slipping off your face. It should turn back on by breathing into the mask. If not, press the power button on the Z2 to restart the feature.

If you continue to have issues, you can disable the Auto Start / Stop Feature.  When you purchase and receive your Z2 it is defaulted to have Auto Start/Stop enabled.

To disable Auto Start/Stop

  • Press and hold the Up Arrow Button and Down Arrow Button at the same time until the Z-Breathe setting flashes.
  • Release the buttons.
  • Then press and hold the Up Arrow Button and Down Arrow Button at the same time again until AOFF-ON
  • Release both buttons and press the Down Arrow Button once to select “AOFF-OFF”.
  • Press and hold the Start / Stop Button to save the setting, you will see the word ACCEPT.
  • Verify that the screen is now flashing AOFF-OFF. If not, repeat the process.
  • To enable the feature, repeat the steps above, but press the Up Arrow Button once to change to Auto Start/Stop, then hold both the up and down arrow buttons until you see the word ACCEPT.