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Resmed AirSense 10 dangerous bug

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mrpearson13 +0 points · about 6 years ago Original Poster

A couple of months ago, my Resmed AirSense 10 stopped automatically shutting off when I removed the nasal pillow mask. No biggie - it still turned on automatically when I put the mask on my nose. However, a few days later I woke up sucking in air as hard as I could with my heart hammering in my chest. I assumed that my nostrils had plugged up as can sometimes happen and went back to sleep.

I was getting more and more tired and went to bed at 8:15 one night. Within 45 minutes and before I fell asleep, my CPAP cut air pressure down to maybe half (5 or 6) maybe less. Fortunately I had a spare and switched to that.

I tried unsuccessfully to contact Resmed about this. I feel I have to tell someone.

Beware if your Resmed AirSense 10 stops automatically shutting off when you remove the mask.

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wiredgeorge +0 points · about 6 years ago Sleep Enthusiast

This auto on/off feature is changeable via the menu. Not sure if it is in the top menu or clinical but you can adjust this so it won't turn on or off by itself; you have to push the on/off button.

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mrpearson13 +0 points · about 6 years ago Original Poster

I did not turn configure it to not shut off, it just broke. The auto on feature did still work. The big thing is that it started to randomly decrease the pressure by a significant amount while I was sleeping which caused me to wake up with my heart pounding and soaked in sweat.

I just wanted to warn people to watch out if their AirSense 10 began to behave in a similar manner.

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snuzyQ +0 points · about 6 years ago Sleep Commentator

Access the menu and turn off the auto on/off feature. That way you will have to turn on your machine yourself and it will neither turn on automatically nor turn off automatically. This should solve your problem.

Our machines are not monsters that whimsically do random things. They do what we tell them to do. The machine isn't broken...it's operator error 99.999% of the time.

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CharmingSalmonSeaLion +0 points · about 6 years ago

Could you have been experiencing a momentary power outage? Just a flicker, such that the machine shut down and then immediately restarted in ramp up mode? Or possibly a voltage fluctuation? I ask, because in my area, we struggle with very unreliable power (old grid infrastructure)

If that's then problem, two possible fixes might be to eliminate the lower ramp setting, provided you can tolerate that, and/or invest in an uninterruptible power source, like those used for computer backup support.

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Chrisbgood46 +0 points · about 6 years ago

Hi there , I have had my res med 10 for about or close to 3 years. I can tell you I always had good sleep reports. But some where my leak issues gone through the roof. So thinking that's website issue. Some where my machine the pressure seemed to lower all of a sudden and the amount of water wasn't going down like it should. What I figured out is there is a mode called ramp time. If that is set to auto the amount of pressure you receive is all screwed up hence a lower pressure. Check this setting. I changed my ramp time to ten min with a lower pressure setting and now my machine doesn't try to adjust the pressures all night (auto) Gives you the amount of pressure all the time after the ten minutes I set it for. Bottom line if ramp time is in auto change it. Hope this helps. You need to get into the clinical settings to change this. Youtube that to see how. Good luck

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Sierra +0 points · about 6 years ago Sleep Patron

Setting the ramp time to Auto should not affect the pressures used after you go to sleep. Auto Ramp just goes up to the Ramp Start pressure you input, and holds there until the machine detects you are asleep. Then it ramps up quite quickly to the minimum pressure if you are in AutoSet mode. If you do not go to sleep within 30 minutes then it ends the hold and ramps up to minimum set pressure. From there it automatically adjusts up and down between the preset minimum and maximum pressures. If you don't want the pressures to be automatically adjusted during the night, you would have to change the Mode from AutoSet to CPAP. Then there will only be one set pressure, not a max and min. You still should be able to use the Auto Ramp feature though.

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snuzyQ +0 points · about 6 years ago Sleep Commentator

Uhmmmmmm...Chrisgood46:

Fixed pressure CPAP is different from auto CPAP and is used for different apnea conditions. Please check with your doc over the changes you have made in your treatment. Ask him or her whether the change is OK for your particular type of sleep apnea. If it is, then request that the change be recorded in your medical record. This way, your clinicians can keep track of your treatment and you won't be at a disadvantage when you get passed around among providers...like in an emergency. It's always good to cover yourself.

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mrpearson13 +0 points · about 6 years ago Original Poster

Thank you for all of your replies. I was feeling more and more tired so much so that I went to bed at 8:15 PM. At about 8:50 (prior to falling asleep), the pressure dropped significantly so much that I was trying to suck air in through my nose. I don't use the ramp feature. I'm using the same model machine now but not that particular one as I'm scared to.

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Sierra +0 points · about 6 years ago Sleep Patron

It does sound like you may have a defective machine. Some thoughts on the issues:

  1. You mentioned that prior to the incident the machine stopped shutting off when you took your nasal pillow mask off. In the Clinical Guide troubleshooting section (see page 32) they mention that if you use a nasal pillow mask and your set pressure is less than 7 cm the automatic shutoff will not work. This would seem to suggest for some time you may be getting less than 7 cm pressure. Do you know if it should be higher than that, or if it has been changed?
  2. Do you use SleepyHead to monitor what the machine is doing? If so you could look back through the history which should all be on the SD card to see if the machine was slowly failing, or if it was an intermittent thing.
  3. A few weeks ago we went camping and tried out our new 12 volt to 24 volt power adapters. Mine which is on an A10 worked fine for all nights. On my wife's S9 machine it initially worked, but then one night it started to act up. In her case it would shut down and then start up again in ramp mode. When I looked at what happened in SleepyHead the next day, I think it shut off and restarted about 15 times. I am amazed that she got any sleep at all. She was going fairly long periods with the machine not running at all. At about 5:00 in the morning she changed to the normal AC adapter as we did have AC on that night. It then worked fine. After some troubleshooting I figured out that the plug on the adapter where it goes into the S9 must have had a broken wire or solder joint to the connection inside the molded plug. If you wiggled it just the right way the power would go off and on at will. I did a screen shot of the SleepyHead chart and sent it to the vendor that I bought the adapter in the spring. They immediately sent me a new one. The warranty on the adapter and the machine is 2 years. That said it sounds like your machine is not shutting right off, or if it is, then it may be immediately restarting without you knowing. I would try wigging the plugs and wires to see if you can make it shut off and on.

In any case I would look at the data on SleepyHead before giving up on it. It might just be the adapter.

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mrpearson13 +0 points · about 6 years ago Original Poster

Thank you very much for your post, Sierra. It's possible that the current from the wall socket was not conducting efficiently. That being said, I replaced the machine with another of the same model and have had no incidents since then. My pressure is 12 cm.

Thanks again.

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mrpearson13 +0 points · about 6 years ago Original Poster

If anyone from ResMed wants the machine and they send me a prepaid shipping box, they can have it.

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michael +0 points · almost 2 years ago

The answer is simple, the Res Med Air Sense 10 uses a 3G , now every state in the United States uses 5G. Why Res Med does not offer a update to all its customers< GREED I hope that the people who purchase the newer model do not have this problem

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Sierra +0 points · almost 2 years ago Sleep Patron

The original versions of the AirSense 10 used 3G. My wife has a later AirSense 10 version and it uses 4G. The newest AirSense 11 machines are 4G. Due to the chip shortage and shortage of machines as a result, ResMed is now selling a non wireless (no G) version that does not support MyAir. The price is a little lower. If I was buying I would take the discount to get the No G version as I do not find MyAir to be very useful. OSCAR is much better.

Here is a link to the AirSense 10 model that does not have the built in cellular communication modem. It seems to be about $200 less than the AirSense 11. They call it the "Card to Cloud" version. Some that consider the automatic upload their CPAP data to ResMed an invasion of their privacy may prefer this version.

AirSense 10 Card to Cloud APAP

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PutSleepApneatoBed +0 points · 7 months ago Sleep Commentator

Is it possible that the electrical service to your home is experiencing very brief outages, or flickering? I have that problem in my area—(old grid plus waaay too many trees) so much so that I invested in a whole house, standby generator…

Other things to consider: is your machine set for auto on? And if there is flickering service an uninterruptible power source (kind of a combined battery back up/surge protector for computers that goes inline between the electrical service and the machine (computer or PAP) might help.

This all assumes, of course, that the machine is NOT defective.

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ejbpesca +0 points · 4 months ago

I have had my AirSense 10 auto on/off function fail intermittently, but once manually on it keeps pumping air.

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