hi, sleepea, did you ever figure this problem out? seems like about the same time you started having this problem, we started having the opposite problem, with the same type of unit. our CPAP machine won't automatically shut off anymore. it just spontaneously started doing this. the sleep specialist doesn't know what's wrong and says they can't help us because of covid-19.
looking for help with our ResMed AirSense 10 CPAP machine with autosense. spoke to the sleep specialist for kaiser yesterday and they said they don't know what's wrong and can't fix it because the office is not open due to covid-19.
the machine worked great for several months, then suddenly it stopped shutting off automatically. it starts up automatically just fine, but when my husband takes it off, it hisses the rest of the morning. my husband has to take it off at about 4:00 a.m., otherwise he wakes up feeling bloated. so either it hisses for hours or he has to fully wake up and turn the machine off by hand. this is really messing us up.
as a temporary measure, the sleep specialist tried to walk my husband through the menu where there should have been an option to disable the automatic on/off. turns out ours doesn't have that setting, and he was very surprised by that.
this sure sounds like some on-air firmware update that introduced a bug. we asked if there was a firmware we could flash to fix this, and the specialist said no.
has anyone else had this experience? could it actually be a mechanical failure? does anyone know if ResMed does on-air updates?