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[Equipment] Resmed S9 fan noise when inhaling
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Hley1 Offline

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Posts: 1
Joined: Jul 2016

Machine: Resmed S9
Mask Type: Full face mask
Mask Make & Model: Unsure
Humidifier: Resmed S9
CPAP Pressure: Unsure
CPAP Software: ResScan

Other Comments:

Sex: Male
Location: United States

Post: #1
Gross Resmed S9 fan noise when inhaling
My equipment is about 4 years old and recently started making a weird whine when I inhale. It seems like the fan speeds up on inhaling and normalizes on exhale. The pitch is just high enough to be annoying and is affecting my sleep. Is this normal wear and tear or do I need to have the unit serviced?
07-12-2016 08:01 AM
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chill Online

Advisory Members

Posts: 864
Joined: Mar 2016

Machine: DreamStation X500
Mask Type: Full face mask
Mask Make & Model: Walk-in Mask Closet
Humidifier: DreamStation
CPAP Pressure: 13-16
CPAP Software: SleepyHead

Other Comments: CPAP True Believer

Sex: Male
Location: Vancouver, Canada

Post: #2
RE: Resmed S9 fan noise when inhaling
Welcome

It is normal for these machines to speed up when you inhale: they need to push through more air to maintain the set pressure. When you exhale, less is needed.

The new whine could indicate a few things. If it sounds more like a whistle, it could be a gasket that is worn out, not seated correctly, or pinched. Or that could be a hole in you hose. If the whine sounds more metallic, It could be a bearing in the blower (or whatever they use).

Chuck
07-12-2016 11:24 AM
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trish6hundred Offline

Advisory Members

Posts: 6,450
Joined: May 2012

Machine: Resmed S9 AutoSet for Her
Mask Type: Full face mask
Mask Make & Model: Fisher & Paykel Simplus
Humidifier: H5i Heated Humidifier
CPAP Pressure: 10 - 7-20 Cm H2O
CPAP Software: Not using software

Other Comments: I started CPAP in 2008. Totally blind since birth.

Sex: Female
Location: Missouri, USA

Post: #3
RE: Resmed S9 fan noise when inhaling
Hi Hley1,
WELCOME! to the forum.!
Hang in there for more answers to your question and good luck to you as you continue your CPAP therapy.

trish6hundred
07-14-2016 05:50 AM
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PaulaO2 Offline
Wiki Editor
Moderators

Posts: 8,067
Joined: Feb 2012

Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #4
RE: Resmed S9 fan noise when inhaling
I've also noticed my machine is noisier when I use my FFM and has gotten noisier as it gets older. I can switch to the nasal pillows and it not make much noise at all.

Disconnect the humidifier and connect straight to the blower unit. If the noise stops, then the racket is probably the humidifier gasket or water in the tub (I sometimes get a whistle if there is water on top the tub).

If the noise continues, then it could be bearings, an internal gasket, or just plain noise. Try putting a thick towel over the machine or put it in a drawer. Just ensure the filter is clear!! I keep a towel to toss over mine for those nights when, for some reason, every little sound irritates me and I can't sleep.

PaulaO2
Apnea Board Moderator
www.ApneaBoard.com


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07-14-2016 01:32 PM
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