No ("default" settings). But, if you have your prescription and know what your EPAP and IPAP settings are supposed to be, you could set your machine to "Bi-Level mode"......set your "EPAP" and "IPAP" settings to what is on your prescription and the "Bi-Flex" setting to "2". Den THANK YOU WULFMAN BU...

I've had this machine since 7/06 and never used it much the first couple of years. Suffered for it too. Now, I try to sleep with it every night. The only things is, I played with the settings and may have messed things up. I still don't get a good night sleep. Is there a way to set the machine back ...