Does anyone have any ideas on how this could have happened? The machine has never been dropped. I do keep it on the floor so that condensation drains back into the water tank, but it never occurred to me that it could somehow drain into the machine itself, unless the heated hose connection is not 100% sealed, but I would think that would show up as a fairly large leak. I have noticed higher than normal leak rates (2-7 L/min, as displayed on machine itself), but thought that could have been attributed to a dud replacement nose pillow.
So it looks like I'll be without therapy for awhile, until I can get an appointment at my DME... I guess if I had any doubts about whether PAPing was helping me, the next few nights will be quite telling. Guess I can also use it as a chance to collect some baseline SPO2 data to see how bad my oxygen levels without therapy.