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[CPAP] Resmed S9 airflow issue
#1
Resmed S9 airflow issue
I've been using an S9 Autoset with full mask for a few years now, but recently I've experienced an airflow issue, usually shortly after putting the mask on, where I can hear the airflow louder than usual, and there's a cyclical kind of "fwup" sound. I can get it to stop if I turn off the air and then back on (not totally powering down the S9, but just a quick press of the button that takes it off and then back on "yellow" mode).

Any ideas what might be causing that? I bought the machine secondhand a few years ago, maybe it's showing its age?

Also: there's no way to update firmware on these, right?
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#2
RE: Resmed S9 airflow issue
You are correct. There is no firmware update for the S9. How many hours are on your S9? It could be hitting its end-of-life.
Crimson Nape
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#3
RE: Resmed S9 airflow issue
(01-08-2021, 06:29 PM)Crimson Nape Wrote: You are correct.  There is no firmware update for the S9.  How many hours are on your S9?  It could be hitting its end-of-life.

Thanks. How do I check hours?
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#4
RE: Resmed S9 airflow issue
Try pressing the "i" button twice, until the sleep quality screen appears.
Then, simultaneously press and hold that button and the double-check button
until the screen flickers and a wrench appears in the lower left box.
Then turn the right knob one click to the right and press the middle of it once.
Then turn the same button until it stops.
The next to last line will show "run hrs".
Crimson Nape
Apnea Board Moderator
www.ApneaBoard.com
___________________________________
Useful Links -or- When All Else Fails:
OSCAR Chart Organization
Attaching Images and Files on Apnea Board
Beginner's Guide to Sleepyhead and OSCAR
Apnea Helpful Tips

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#5
RE: Resmed S9 airflow issue
(01-08-2021, 07:21 PM)Crimson Nape Wrote: Try pressing the "i" button twice, until the sleep quality screen appears.
Then, simultaneously press and hold that button and the double-check button
until the screen flickers and a wrench appears in the lower left box.
Then turn the right knob one click to the right and press the middle of it once.
Then turn the same button until it stops.
The next to last line will show "run hrs".

Ah, thanks. 6578 total hours.
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#6
RE: Resmed S9 airflow issue
That's a young machine. My Aircurve 10 Vauto is at over 16,600 hours.

Happy birthday to my machine. 5 years today.
Sleeprider
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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#7
RE: Resmed S9 airflow issue
Is the sound coming from the mask area? It may be the anti-asphyxiation flaps closing or having trouble closing if your mask has them.
Using a 13" MacBook Air (2017), MacOS Catalina (10.15.7), OSCAR v1.2.0
In a VM: Win10 1909 (18363.1256)

Installing OSCAR on a Mac
Organizing your OSCAR charts
Attaching images and files for the forum
OSCAR Help
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#8
RE: Resmed S9 airflow issue
(01-09-2021, 12:54 AM)Jeff8356 Wrote: Is the sound coming from the mask area?  It may be the anti-asphyxiation flaps closing or having trouble closing if your mask has them.

Yes, definitely coming from the mask area...hmm, I'll take a look, I wasn't aware of those flaps...
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#9
RE: Resmed S9 airflow issue
I'm not sure if they are on your mask or not. But the ResMed masks have them in the elbow. I can hear them slap shut when I first turn my machine on. Two little flaps on either side of the elbow, the pressure from the machine keeps them open during use. If the machine turns off unexpectedly during the night the flaps open so you can breath.
Using a 13" MacBook Air (2017), MacOS Catalina (10.15.7), OSCAR v1.2.0
In a VM: Win10 1909 (18363.1256)

Installing OSCAR on a Mac
Organizing your OSCAR charts
Attaching images and files for the forum
OSCAR Help
OSCAR Data Interpretation
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