My 14ish month old DS560 has started to make a soft "click" every time I inhale or exhale.
I am guessing there may be some type of non-return valve in the machine that is either coming loose, worn, or needs adjustment.
Any idea if this fault can be a DIY fix?
Are parts available if needed?
I have emailed the company I purchased the machine from, and expect a reply pretty soon [they have been excellent in all dealings]
I just figured it couldn't hurt to check with the crew here too