Why would minimumg pressure & EPAP now be 0

[Caro2020]

    I have recently adjusted a few settings, had one bad night and one good night, giving it a few more nights to see.  But I noticed on my daily report for last night the Minimum for pressure and EPAP is 0, when it has always been 4 for both, does anyone know if maybe I set something wrong or why they would be at 0 for last night ?

[Brazen]

2am your machine went to zero right before what looks like it turned off. That is what OSCAR is reporting as minimum. 
Did you turn it off or take your mask off at that time?
Do you have the auto-stop feature turned on?

I turned off the auto-stop "Smart Stop" feature on my AS11. I just don't like the idea of the machine deciding it doesn't sense a breath so it turns off.

[Caro2020]

Oh I never thought about it   When i get up to use the restroom I turn it off and take mask off and then put mask on and turn it back on, not sure if that is the best thing to do in that situation ?? Would love to know the best thing to do because I do it about 2-3 times a night also mine is a smart start ? Turned off

[Brazen]

Definitely okay to take the mask off and turn off the machine when you get up during the night. You can look at your OSCAR charts to see all the data you need and it'll show when you take it off.

Some folks turn off both Smart start and stop but personally, I keep Smart start on. I just like having the machine start automatically.  I keep Smart stop off.

[Dog Slobber]

Caro2020,

You have an Air10, therefore SmartStart and SmartStop are coupled and cannot be separately turned off or on. They are both on or both off. I'm not a big fan of SmartStop, but to me SmartStart is well worth the keeping them both on. I have an Air10 as well.

Brazen's description of how SmartStop works is not accurate and misleading. SmartStop does not turn the machine off because it no longer senses some one breathing. It turns the machine off, when there is sufficiently little air flow resistance caused by somebody no longer attached to the mask. There have been some claims that leaks that are extremly high and sustained can trigger SmartStop to turn off.

But describing SmartStop as turning the machine off, because it doesn't detect breathing, is not helpful and can imply something like long apnea or shallow breathing can result in the machine turning off.

[Brazen]

I did not know the SmartStart and SmartStop are all or nothing with the AS10. My mistake.
Personal preference to use or not.
I know there were times my AS11 SmartStop turned it off with the mask still on my face (not leaking) so it's not a feature I trust.

@Dogslobber.
I wasn't aware of the technical description of the SmartStop function nor was it my intention to describe it technically.  
I can see how a practical interpretation, with only my personal experience of what appeared to happen with my own SmartStop, could be misleading as a description of the actual mechanical process within the machine. That was not my intention. 
I meant it more as a malfunction scenario. 
It very well could be designed to function by calculating air flow resistance.  It's only in my personal experience that it did not function correctly and therefore led me to conclude it could malfunction related to breath.
Please forgive my inaccurate statement.