Oh yeah, I have to leave the SD card out to make any changes. If the card is left in, it starts beeping and says "SD card error"
The worst part is, when I start therapy, it starts at full pressure, 15. I hit the ramp button and it starts the ramp at 4, and continues to increase to the full pressure over 30 mins or so. It's no longer auto adjusting pressure it seems, just ramping and staying at the max pressure. I try to change the ramp setting but they won't take. It's blasting me at full pressure all night long. It usually wakes me up and I hit Ramp again. Running in A-Flex mode.
Strangely this started happening after I cancelled my last meeting with my sleep Dr. So I'm wondering if it's possible for the Dr. to program some kind of change to the settings to take effect on a future date, and lock me out, forcing me to come in to get it fixed? I know, it sounds like a conspiracy theory, but the machine started acting weird about a week after my scheduled appointment.