crwdns2934241:0crwdne2934241:0 Sheila Lusk

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Why is it making a high pitched whistling sound?

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It is 2 years old and suddenly one night when it turned on, it had a high pitched whistle sound and the pitch changed with each breath I took. It was continuous and I could not sleep a wink with it on.

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ResMed AirSense 10

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open