Resmed Airsense Autoset 10 Auto off stopped working

[jsmit86]

Yesterday, I had a slim tube hose fail with a tear by the end. No big deal, cheap hose.
I went to grab a new hose from the closet, and the one I grabbed is a standard, NOT slim tube.
I installed the hose, and changed the machine setting to the normal tube size, i.e. not a slim tube.

When I went to use the machine, it Auto started as I put on the mask and started breathing, but... when I take the mask off, the machine keeps running. It is not shutting off as is normal. I have to press the button on the top.

Does anyone have any experience with this? I have used this same hose with my HDM Z2 Auto, and the Auto Stop/Start works just fine.
Any suggestions. (Besides... just press the button on top! )

[Pugsy]

Yesterday, I had a slim tube hose fail with a tear by the end. No big deal, cheap hose.
I went to grab a new hose from the closet, and the one I grabbed is a standard, NOT slim tube.
I installed the hose, and changed the machine setting to the normal tube size, i.e. not a slim tube.

When I went to use the machine, it Auto started as I put on the mask and started breathing, but... when I take the mask off, the machine keeps running. It is not shutting off as is normal. I have to press the button on the top.

Does anyone have any experience with this? I have used this same hose with my HDM Z2 Auto, and the Auto Stop/Start works just fine.
Any suggestions. (Besides... just press the button on top! )

What pressure are you using when it comes time to remove the mask?
Are you using the mask in your profile?

[LSAT]

Several people have reported problems with the OFF when using the smart start feature. The machines seem to be very sensative to the pressure when going OFF. Are you aware that when ResMed machines are turned off, the motor continues to run at a low speed for 20 minutes to dry the hose???

[jsmit86]

Yesterday, I had a slim tube hose fail with a tear by the end. No big deal, cheap hose.
I went to grab a new hose from the closet, and the one I grabbed is a standard, NOT slim tube.
I installed the hose, and changed the machine setting to the normal tube size, i.e. not a slim tube.

When I went to use the machine, it Auto started as I put on the mask and started breathing, but... when I take the mask off, the machine keeps running. It is not shutting off as is normal. I have to press the button on the top.

Does anyone have any experience with this? I have used this same hose with my HDM Z2 Auto, and the Auto Stop/Start works just fine.
Any suggestions. (Besides... just press the button on top! )

What pressure are you using when it comes time to remove the mask?
Are you using the mask in your profile?

Yes - I am using the Airtouch F20. My range is 8-12cm, my best guess is about 8cm when I take the mask off.
I am aware that the machine runs at a very low output upon mask removal, but I think the machine is putting out the 8cm instead of cycling down to that small amount needed for the auto "off" mode.

I have had this happen once or twice in the last year, but not repeatedly.
I'll try unplugging the machine for a few minutes to see if that resets anything.

[jsmit86]

Several people have reported problems with the OFF when using the smart start feature. The machines seem to be very sensative to the pressure when going OFF. Are you aware that when ResMed machines are turned off, the motor continues to run at a low speed for 20 minutes to dry the hose???

That's a yes.

[Pugsy]

There is a known issue with the Auto off part of SmartStart not working so great at lower pressures with some nasal pillow masks.
I have heard of one other person using a full face mask and having same issues.
It's so common with the nasal pillow masks it is even mentioned in the manual but they say 7 or below in pressures.
When I was using the P10 nasal pillow mask...it wouldn't work correctly even when I tried it at 10 cm....so go figure that one.
Auto on part...worked great but the auto off part didn't work so great.

Why with a full face mask....dunno... but you might try an experiment just to see what happens...if you are using EPR...turn it off briefly and use the machine briefly to start it and then take the mask off...with EPR off...and see if it shuts down as it should.
I use EPR myself and the drop during exhale might be a factor...I never thought to try it with EPR off...just now thought about it.

There really is nothing you can do other than......
1...manually push the button to turn it off (then it goes into the cool down low level blowing)
2...unhook the mask from the long hose and if you do that then it should shut off after about 5 or 10 seconds and then go to the cool down mode.

The machine is having trouble distinguishing the difference in resistance between when a human is attached and when the human isn't attached. I think (no proof just my thoughts) that at lower pressures and the inherent resistance in some of these masks also being low that the machine just doesn't know the human is no longer attached because the mask itself is still offering enough resistance.

I just learned to push the button when I was using the P10....but now that I am not using the P10 and I am using the Bleep the Auto Off part works like it is supposed to even though the pressures I am using are exactly the same as what I used with the P10.

[Pugsy]

One other thought....since this happened with the replacement of a hose...was it a name brand hose or generic hose?
I know you changed the diameter when you changed the hose...but I am wondering if it was a generic off brand hose and the resistance between the new hose and the mask is enough to confuse the machine?

These hoses aren't all made the same...some are much nicer than others...more flexible, lighter, etc.

[jsmit86]

One other thought....since this happened with the replacement of a hose...was it a name brand hose or generic hose?
I know you changed the diameter when you changed the hose...but I am wondering if it was a generic off brand hose and the resistance between the new hose and the mask is enough to confuse the machine?

These hoses aren't all made the same...some are much nicer than others...more flexible, lighter, etc.

Good thoughts, but upon further investigation, I think my hose issue was just a coincidence.
I tested the unit last night, and even with another decent slim line hose, the unit keeps running, but it does "down shift". So not full output, but way more than the hose drying level that is normal.
When I took the mask off during the test, the pressure was about 8.0cm. One time when I woke up last night, I took the mask off, the unit kept running, and I think the pressure was about 11. Hard to tell without my glasses on. Max pressure is 12, so it was definitely double digit.

I called the DME last night, and he said they'd send the unit back to Resmed for repair or replacement since it's under warranty. I just need to see if they will provide a loaner. If not I have a HDM Z2 Auto, but my wife may not be pleased with the different noise level.
Thanks to the members here for all of the advice.

[Pugsy]

It's good that you can get it replaced.
While the issue with nasal pillows and lower pressure is known....same issue, and sporadic at that, with full face mask at higher pressures points to a potential sensor issue and while it might not be critical to performance or data recorded it is something that should work properly and sense its under warranty...get it replaced. I am just never comfortable with potential sensor issues...in the back of my mind there's always the question "what else isn't working like it should".

We (and or our insurance) pay enough for this stuff that we shouldn't have to accept sub par performance when something is under warranty...that's what we have warranties for.

[jsmit86]

It's good that you can get it replaced.
While the issue with nasal pillows and lower pressure is known....same issue, and sporadic at that, with full face mask at higher pressures points to a potential sensor issue and while it might not be critical to performance or data recorded it is something that should work properly and sense its under warranty...get it replaced. I am just never comfortable with potential sensor issues...in the back of my mind there's always the question "what else isn't working like it should".

We (and or our insurance) pay enough for this stuff that we shouldn't have to accept sub par performance when something is under warranty...that's what we have warranties for.

Agree-
I also had a couple of times last night when I woke up inhaling, and it felt like I wasn't getting enough air. So... something is amiss.
I called my DME. He doesn't provide loaners, but I have a Z2 Auto travel unit I will use until the unit comes back.
(The DME is a local medical supply company, not a CPAP specialist per se. I was purchasing outright with no help from insurance, and he was much cheaper than any of the DMEs supplied by my Doctor. He matched online pricing, but was also able to assist with making sure I got the right unit, and had it configured properly. Not sure if Resmed would assist with a loaner, but since I have the Z2, I'll just use that)