Data not recorded - resmed airsense 10

Chilehead · Post by **Chilehead** » Thu Oct 15, 2015 7:05 am

Last night about 1:00am my CPAP stopped recording data. It worked fine, but when it synced with myair.resmed.com it says I only have 1:21 hours of usage. Also it sync'd with resmed.com at 1:50am, which is pretty unusual, as it usually syncs about an hour after I turn it off in the morning.

I pulled the SD card and looked at the files, and sure enough the dates of the log files hadn't been updated since about 1am or so, even though it was being used and working all night. Imported into sleepyhead just to be sure, and of course it only had 1:21 worth of data to display.

I pulled the power, plugged the SD card back in, and I'll have to see if it records tonight. I did use the mask after this for about 2 minutes just to see if it would record anything, and I think the usage displayed on the LCD went up by 2 minutes, so I think it's working again.

Is this just a glitch, does it occasionally happen? Or is there a potential problem with my unit?

Chilehead · Post by **Chilehead** » Fri Oct 16, 2015 7:02 am

It worked fine last night. Looks like a software glitch where whatever service was running to collect data thought I stopped using it even though the CPAP was still running (otherwise I would have woken up really quickly for lack of air!) Unplugging it must have reset whatever the problem was, but that ruined my otherwise perfect "attendance" record.

AngelaMia · Post by **AngelaMia** » Mon Mar 07, 2016 7:09 am

The same thing happened to me last night. I woke up at 6:30 am (machine on) and when I turned it off, the display said I had only used the machine for 2 hours. The data just stopped recording in the middle of the night. I checked the data file and the myAir sync time to confirm, just like you suggested. Even though I woke up with the machine on and working, it did not record any data. No large leak, nothing to precipitate an event, the data just stopped. I'm so glad I found your post. Thank you.

AngelaMia · Post by **AngelaMia** » Mon Mar 07, 2016 7:16 am

I should have written, "the machine did not record any data AFTER 2 am." The card recorded the first 2 hours of data but nothing past 2 am. And even though I woke up at 6:30 am with the machine one, my machine synced with myAir at 3 am, about an hour after data stopped recording. The card is not even remotely close to being full. I will call me DME today.

Julie · Post by **Julie** » Mon Mar 07, 2016 7:49 am

Are you sure you're not reading things after noon hour (for the previous night)? The machines are usually programmed to report from noon to noon, so if you look at results afterward, you may only see 1-2 hrs of data. You need to read it before noon on the same day that you want stats from.

robysue · Post by **robysue** » Mon Mar 07, 2016 8:22 am

Chilehead wrote: Is this just a glitch, does it occasionally happen? Or is there a potential problem with my unit?

The Airsense 10s are not that old. If this happened to me, I'd call the DME to report the problem immediately.

Even if there was a brief power surge or power outage, you said that you woke up the next morning with the machine running. Hence even if the machine had been turned off and then back on (power glitch + auto on, perhaps?), more data should have been recorded.

Julie wrote:Are you sure you're not reading things after noon hour (for the previous night)? The machines are usually programmed to report from noon to noon, so if you look at results afterward, you may only see 1-2 hrs of data. You need to read it before noon on the same day that you want stats from.

Yes the machine's LCD resets to 0 at noon each day, and looking at the LCD data after noon will make it look as though you've not used the machine or used it very little

But Chilehead is reporting that SH and the website are both under-reporting the usage hours for the night and the SD card itself has no data after 1:00AM on the night in question.

The detailed data is directly written to the SD card as it is generated. The summary data is written to the SD card within a few minutes of the machine being turned off. And according to Chilihead, the website uploads the data wireless within an hour of the machine being turned off. And on the night in question, the website showed evidence that the data was uploaded at about 1:50AM, fifty minutes after the machine quit recording data. So it sure seems as though the machine thinks it was turned off at around 1:00AM

sptrout · Post by **sptrout** » Mon Mar 07, 2016 11:55 am

I had the same problem with my Airsense 10 (only recording 1 hour and 21 minutes even though the machine was on all night), and after I turned off the Auto-Start, Auto-Off functions, I have not had the problem since (turned-out that I prefer just manually turning the machine on and off anyway). No way to know if correlation equals causation, but it has been several months now without anymore problems.

derekpotter · Post by **derekpotter** » Mon Mar 15, 2021 2:44 am

Just for the record, I had a similar issue with my brand-new AirSense 10 last night (14/15th March 2021). According to OSCAR, it recorded no data from about 4 AM to 5 AM.

My first thought was "power cut", so I checked with the electricity supplier but there hadn't been one. (The machine is firmly plugged in too, in case anyone's wondering!) In any case, if there had been a power outage, I would have expected the machine to notice and add it to the record; otherwise it's a serious design omission - especially considering how many bells and whistles the AirSense 10 does have. On the other hand, if it just took it into its head not to record for an hour, that's also a bit worrying.

It's a mystery but, selfishly, I'm glad other people have reported similar things. I imagine that for most of us it's an annoyance rather than a medical emergency. I think ResMed need to know, though.

tisket · Post by **tisket** » Mon Mar 15, 2021 9:31 am

Mine skipped Saturday night entirely.

I have a very loud "power out alarm" plugged into the same surge protector as the cpap. If power had gone out, I would have been blasted out of bed by the alarm.

I thought maybe it was related to daylight savings time switchover.

I should note I did turn on the autostart recently, don't remember which day.

chunkyfrog · Post by **chunkyfrog** » Mon Mar 15, 2021 9:52 am

Unlike your phone, TV, or "atomic" clocks, your cpap does not "do" DST.
There is no reason linking DST with the glitch.

JLROhio · Post by **JLROhio** » Tue Mar 16, 2021 10:29 pm

tisket wrote: ↑
Mon Mar 15, 2021 9:31 am
Mine skipped Saturday night entirely.
...
I thought maybe it was related to daylight savings time switchover.

My machine skipped Sat night recording too - weird!

Here's my ResMed report from the app...showing that Sat. night was one weird anomaly out of an entire year's worth of data.

--

: Cap1.JPG (50.75 KiB) Viewed 4689 times

: Cap2.JPG (36.94 KiB) Viewed 4689 times

: Cap3.JPG (41.43 KiB) Viewed 4689 times

I too was originally thinking something had to be related to DST.

It would be interesting to hear of any other data points from other ResMed Users??

--

Pugsy · Post by **Pugsy** » Wed Mar 17, 2021 7:04 am

Those of you who have zero data for Sat night.....did you change the clock on your machine?
And if you did...when did you change it?

Give me a bit and I will download and see what I have showing....or not.

DST does mess things up but I haven't ever seen it totally omit data for an entire night.

Pugsy · Post by **Pugsy** » Wed Mar 17, 2021 7:18 am

I don't have missing data for Sat night.
I didn't change the clock on the machine because I never changed it last fall either. Can't remember the last time I changed the clock.

I don't need the times that I turn it on to be spot on accurate. To me hours slept is hours slept (or used the machine) no matter what the time says I started things. Now if I was using a pulse oximeter...I would need times to be accurate but I don't so I don't care.
Right now I am back on accurate though. It was off an hour from last fall change to now. That's a mess to fix that error.

Changing the clock opens up a whole new can of worms....which I did open once and accidentally set the calendar forward a day when I meant to change only the clock. So I don't mess with the clock.

So those with missing data....also make sure your calendar is showing correct date and not a day forward.

tisket · Post by **tisket** » Wed Mar 17, 2021 7:56 am

I did not change the clock but will check it when I get home.

My impression was these new machines all had cellular modems and phoned home so I thought maybe they self-corrected the time like a cell phone does.

Pugsy · Post by **Pugsy** » Wed Mar 17, 2021 8:10 am

tisket wrote: ↑
Wed Mar 17, 2021 7:56 am
I did not change the clock but will check it when I get home.

My impression was these new machines all had cellular modems and phoned home so I thought maybe they self-corrected the time like a cell phone does.

The machines do NOT have the ability to self adjust/correct times or dates.
ResMed machines have an internal clock and calendar that has to be set manually.

Machine	Mask	Humidifier

Additional Comments: OSCAR & SleepHQ

Data not recorded - resmed airsense 10

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