(10-19-2015, 04:59 PM)justMongo Wrote: Check the internal clock. Make sure it's set to your local time.
The ResMed machines consider sessions after Noon on the machines clock to be the next day.

(10-19-2015, 05:05 PM)Possum Wrote: Thanks, justMongo! The clock is correct. I was aware of the noon to noon rule but don't think that explains why it would stop recording data in the middle of the night yet keep operating.

(10-19-2015, 04:45 PM)Possum Wrote: Hello all,

I am having a really irritating issue with my CPAP machine. I have been using therapy for 3 months now and am extremely compliant, averaging > 7 hours continuous usage every night. However, 1-2 times per week, my machine stops logging data in the middle of the night and returns number of usage hours as low as 50% of my actual (3-4 hours instead of 7-8). Unless I am doing it completely subconsciously, I do not turn off the machine or take off my mask during the night.

Whenever I wake up in the morning, the air is still blowing and machine seems to be operating normally. But then I look at MyAir (online data upload site for ResMed) and it shows that it synced in the middle of the night sometime. I also acquired ResMed's software, and there are no observable reasons why it would shut down - pressure is pretty steady, and there are no major leaks right before the shutdown. But, data recording just stops around 2-3 AM, an hour before it uploads to MyAir, and no more data is recorded during the night.

I thought I might have a major mouth leak that could be causing the machine to shut down automatically, so I disabled the AutoStart feature. Now I have to manually turn the machine on and off, and as far as I know it will not shut down unless the button is pressed, no matter how bad leak might be (even though my data always shows leak ~ 0 L/min).

I have talked to my provider, ResMed Technical Support, and MyAir Support - no one has offered a reasonable explanation for how this can happen. They have replaced my unit once already, but the same issue is happening with the new unit.

Does anyone have any ideas, or has this happened to you?

Thanks!

(10-19-2015, 08:58 PM)sonicboom Wrote: I have seen this problem a bunch. I'm now on my fourth machine. In my case it had to do with climate line fault and rainout. If that is possible with you go to the thread where this is discussed with possible solutions.

(10-20-2015, 01:44 PM)sonicboom Wrote: The failure to record is not always associated with a line fault error message. In my case it is associated with a sudden increase to pressure 10 - way over my set max of 6.4. I find this may be caused by condensation in the tube between the mask and the climate line. Setting line to auto has fixed this most of the time but not all.