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[Equipment] DreamStation Auto - New loud noise on exhale
#1
Question 
DreamStation Auto - New loud noise on exhale
I have been using a DreamStation Auto since last December. Overall, it has worked fine until the last couple nights. Suddenly, it has started making a strange noise part way through my exhale. The best way I can describe it is a long drawn out B-O-I-N-G sound. Except it's pretty low pitched. But as it kept waking me last night (and my wife) I kept thinking boing every time it happened. It starts about 1/4 into my exhale and stops right at the end when I start to inhale. The first night it only happened for a few minutes when I first turned on the machine (or I was too tired for it to wake me). Last night it either happened all night or kept reoccurring causing me to wake up repeatedly and causing my better half to go sleep in the spare bedroom. The machine was brand new when I got it.

Anyone else experienced this? I changed the disposable filter last night even though it looked clean (I had just replaced it and washed the reusable a couple weeks ago). My first thought is the motor is going bad, but hoping there might be something silly/easy I need to check being fairly new to CPAP treatment yet.
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#2
RE: DreamStation Auto - New loud noise on exhale
I don’t know about that sort of sound on exhale, but are you by any chance using the AFlex setting?
If you are, try turning it off, and see if the noise goes away.

Also, unplug the machine from its power source, wait a few minutes and plug back in.

If the above does not get rid of the sound, the machine should be under warranty. See if you can return it and get a replacement.
OpalRose
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#3
RE: DreamStation Auto - New loud noise on exhale
Thanks! I'll try those. I thought on my way to work this morning that I should have tried 'rebooting' it. I do have one of the flex settings on, I'm not sure which one or level though. It hasn't been changed recently though, but worth a test to see.

I have an appointment with DME tomorrow so he can take a look at it (and get it replaced if need be).
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#4
RE: DreamStation Auto - New loud noise on exhale
One of my experiences with Respironics machines is that after a while they can make extraneous noises. In my case it was a whistling sound so it's probably differing to yours.
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