The Auto OFF/ON feature may not work with the use of a full face mask due to its design. In this case you will need to disengage the Auto OFF-ON feature and manually press the Start/Stop Button to start and stop therapy.
The Auto OFF/ON feature will stop therapy if a large air leak is detected between the Z2 outlet and your mask. This can happen if your mask is not being worn properly. Please make certain all connections are secure, the mask properly worn and the On/Off button has been pushed or you start breathing into your mask.