Airsense 10 suddenly shut down

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
stevenal
Posts: 154
Joined: Fri Jun 10, 2011 2:00 pm

Re: Airsense 10 suddenly shut down

Post by stevenal » Fri Mar 31, 2023 3:56 pm

I've seen the green power light go out on the power brick at least twice. This didn't affect the machine, since I'm using battery backup. Cycling power to the brick restored it. I'm guessing the brick has some protective circuitry that shuts it down when a surge is detected.
AirSence 10 Autoset, Dreamstation 2 backup, Swift FX, Z1 for travel.

tisket
Posts: 198
Joined: Sat Apr 01, 2017 2:03 pm
Location: Florida

Re: Airsense 10 suddenly shut down

Post by tisket » Fri Mar 31, 2023 5:13 pm

Interesting. Either that or it's defective. I didn't even notice that the brick had a light until a few days ago due to my wiring being under the top shelf of a nightstand. I noticed the green light when I was fiddling with it the other day and it occurred to me maybe I had a bad power supply. Wish I had known about the light the two times the machine has been dead while I was awake, I would have checked it. Going by Oscar this has happened while I was asleep too, and eventually it came back on, but it means I was breathing my own exhaust for ten or fifteen minutes and didn't wake up, which is disturbing. I assumed that would wake me right up. One morning I found myself with the tape pulled off my mouth, maybe that was a night it happened and I pulled the tape off in my sleep.

I ordered another power supply which should get here Monday. But I think I will keep using this one until it happens again so I can check to see if that light is off. If so I will replace it with the new one.

I don't understand your setup. Is the brick plugged into the battery backup? If so it seems it would protect against power from the wall going out, but not the brick going off, since the brick is between the battery and your machine. I am puzzled by how the light could be off yet the CPAP machine still have power since power is coming from the brick.
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ResMed Airsense 10 Autoset, Aloha nasal pillow mask using HoseBuddy for overhead hose management, Nexcare paper tape for mouth

stevenal
Posts: 154
Joined: Fri Jun 10, 2011 2:00 pm

Re: Airsense 10 suddenly shut down

Post by stevenal » Sat Apr 01, 2023 1:51 pm

The Freedom V2 battery is charged by the Resmed brick. AC to brick, DC out of brick to battery, battery to CPAP.

I just tried a short interruption on the DC side while delivering air. Once restored, machine went through its startup sequence and then began delivering air. During the test I wore the nasal mask to prevent it shutting down due to leaking, and breathed through my mouth to prevent it from auto starting from breathing. Since the AS10 has been available for some time, there may be other versions out there that behave differently. I got mine in '21.
AirSence 10 Autoset, Dreamstation 2 backup, Swift FX, Z1 for travel.

tisket
Posts: 198
Joined: Sat Apr 01, 2017 2:03 pm
Location: Florida

Re: Airsense 10 suddenly shut down

Post by tisket » Sat Apr 01, 2023 2:17 pm

Ah ok. Not familiar with that battery, thought you had the brick plugged into a UPS. Interesting that the machine restarted, sounds like it is not uninterrupted power.

Yeah it comes back on for me too and starts blowing when I finally get it to come back to life from unplugging and plugging back into the power strip. Judging by Oscar it has gone off and stayed off at times for ten or fifteen minutes before coming back on on its own, all while I slept. But twice the lack of air woke me up so I saw what was happening.
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ResMed Airsense 10 Autoset, Aloha nasal pillow mask using HoseBuddy for overhead hose management, Nexcare paper tape for mouth

tyrinryan
Posts: 133
Joined: Wed Jun 26, 2019 1:46 pm

Re: Airsense 10 suddenly shut down

Post by tyrinryan » Sat Apr 01, 2023 10:36 pm

Tisket: I thought you had a spare AS10 (that you shared). Have you interchanged the power supply (bricks) to see if that is the problem? Also, I think there is a second current at a low 3.5? or 3.75? volts DC? volts to indicate as a signal that the power supply is providing the proper 24 volts DC. If this isn't working properly, I thought the cpap shuts down the power supply (or something like this) and perhaps it does so intermittingly. This could be the problem. I tried to measure the voltage once with a multimeter but I didn't know which pin was which and I caused a large spark/short so you have to be careful.

tisket
Posts: 198
Joined: Sat Apr 01, 2017 2:03 pm
Location: Florida

Re: Airsense 10 suddenly shut down

Post by tisket » Mon Apr 03, 2023 7:13 pm

Well remember I sent it back under warranty so people who are supposed to know what they are doing looked at it and presumably the power supply. They said there were "mask events" so I think they misinterpreted the machine going off for me turning it off, since both look like the pressure just stops on the graphs.

I do have a spare but I've only woken to no air twice, and I sent it back after the first time. If it happened frequently yes I could change power supplies and see, but it is so intermittent that it is very hard to test for it. I thought it was a bad powerstrip since it hadn't happened since I got a new surge protector/powerstrip, but now it has happened again. Unless it wakes me up, I don't know about it unless I happen to take the card out and read it with OSCAR and see a no-pressure time.

I really wish I had known about that power strip light, I would have checked to see if it was on. If it was off then it's definitely the power supply, but if it was on, it seems more likely it is a fault with the machine. Guess I'll just have to wait for it to happen again. I just hope nothing bad happens to me if it doesn't come back on. Has me thinking about those valves on full face masks, presumably they are there for a reason. I would think high CO2 levels would wake anybody up gasping for air, but I don't know that much about it and whether low O2 levels might keep you from waking up.

I've never heard anyone else report this problem with the machine just turning off by itself and not responding to knobs and buttons. If it was caused by something as common as fluctuations in the power from the wall I would think everyone would have experienced this by now.
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ResMed Airsense 10 Autoset, Aloha nasal pillow mask using HoseBuddy for overhead hose management, Nexcare paper tape for mouth

stevenal
Posts: 154
Joined: Fri Jun 10, 2011 2:00 pm

Re: Airsense 10 suddenly shut down

Post by stevenal » Mon Apr 03, 2023 7:48 pm

I just found this thread: viewtopic/t75607/Res-Med-shuts-itself-o ... night.html

Any chance you place the power brick next to the PAP? Mine is kept on the floor, with the light on top where I can see it.
AirSence 10 Autoset, Dreamstation 2 backup, Swift FX, Z1 for travel.

tisket
Posts: 198
Joined: Sat Apr 01, 2017 2:03 pm
Location: Florida

Re: Airsense 10 suddenly shut down

Post by tisket » Mon Apr 03, 2023 8:01 pm

Interesting thread you found. Seems a number of other people have had this problem. Disturbing.

No the power brick is on the shelf below the top shelf of the nightstand where the machine is. Nowhere close.

Frustrating that they did not fix it or replace it under warranty. I wonder if I should just stop using this machine. I was hoping to find out whether it was the power supply or the machine, but it may be too risky to keep using it, since I mouth tape.
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ResMed Airsense 10 Autoset, Aloha nasal pillow mask using HoseBuddy for overhead hose management, Nexcare paper tape for mouth

tyrinryan
Posts: 133
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Re: Airsense 10 suddenly shut down

Post by tyrinryan » Tue Apr 04, 2023 2:53 pm

Tisket: Please don't give up on the machine. I'm really no expert like the rest of the team but it sure looks like an intermittent power thing. You could Interchange the power supplies (bricks) {you have them; most people don't} and see what happens. I found it really difficult to (try to) measure the voltage on one.

tisket
Posts: 198
Joined: Sat Apr 01, 2017 2:03 pm
Location: Florida

Re: Airsense 10 suddenly shut down

Post by tisket » Tue Apr 04, 2023 3:01 pm

Since I just bought a new power supply I can try it. But if it is the machine, there is the risk it will go off and not come back on and I won't wake up.

Slept only partially taped last night. Large leaks as expected but only about 9% of the night so not as extreme as I feared. I've had worse when fully taped.
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ResMed Airsense 10 Autoset, Aloha nasal pillow mask using HoseBuddy for overhead hose management, Nexcare paper tape for mouth

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zonker
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Re: Airsense 10 suddenly shut down

Post by zonker » Tue Apr 04, 2023 5:41 pm

tisket wrote:
Tue Apr 04, 2023 3:01 pm
Since I just bought a new power supply I can try it. But if it is the machine, there is the risk it will go off and not come back on and I won't wake up.
you'll wake up. i've had power outages before and as soon as the machine powered off, i woke up at once because trying to sleep without the machine forced me to take literally gasps of air.
people say i'm self absorbed.
but that's enough about them.
Oscar-Win
https://www.apneaboard.com/OSCAR/OSCAR-1.5.1-Win64.exe
Oscar-Mac
https://www.apneaboard.com/OSCAR/OSCAR-1.5.1.dmg

tisket
Posts: 198
Joined: Sat Apr 01, 2017 2:03 pm
Location: Florida

Re: Airsense 10 suddenly shut down

Post by tisket » Tue Apr 04, 2023 8:48 pm

According to OSCAR I've slept through several of these power-offs. Fortunately the machine came back on after fifteen minutes or so.
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ResMed Airsense 10 Autoset, Aloha nasal pillow mask using HoseBuddy for overhead hose management, Nexcare paper tape for mouth

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zonker
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Re: Airsense 10 suddenly shut down

Post by zonker » Wed Apr 05, 2023 12:12 pm

tisket wrote:
Tue Apr 04, 2023 8:48 pm
According to OSCAR I've slept through several of these power-offs. Fortunately the machine came back on after fifteen minutes or so.
i'm sorry you can sleep through the machine powering off. perhaps your untreated apnea is mild enough.
people say i'm self absorbed.
but that's enough about them.
Oscar-Win
https://www.apneaboard.com/OSCAR/OSCAR-1.5.1-Win64.exe
Oscar-Mac
https://www.apneaboard.com/OSCAR/OSCAR-1.5.1.dmg

tisket
Posts: 198
Joined: Sat Apr 01, 2017 2:03 pm
Location: Florida

Re: Airsense 10 suddenly shut down

Post by tisket » Wed Apr 05, 2023 1:30 pm

Severe obstructive unfortunately. 31+ AHI untreated.
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ResMed Airsense 10 Autoset, Aloha nasal pillow mask using HoseBuddy for overhead hose management, Nexcare paper tape for mouth