CPAP SD Card Errors Explained
Quick answer
ResMed user guides describe the SD card as a way to transfer therapy data. Do not format or delete the card, and do not remove it while the SD indicator is flashing. Record the exact message and model, then ask your equipment provider for model-specific instructions.
Protect the data first
Do not format, erase, or delete files from the card unless the exact model instructions and your equipment provider explicitly require it.
Remove the card carefully
Follow the user guide for the card cover and orientation. Do not remove the SD card while the SD light is flashing because data may be writing.
Do not assume all devices behave the same
Whether therapy can continue without the card and how compliance data is transferred depends on the model and provider workflow. Use the exact device guide instead of applying a universal reset or formatting procedure.
Error codes related to this guide
Error codes on your unit that point to this problem, by brand:
- Philips — Philips E-180 · Philips E-181 · Philips E-182 · Philips E-183 · Philips E-19 · Philips E-190 · Philips E-191 · Philips E-192
- Resmed — Resmed Error 006 · Resmed Error 013 · Resmed Error 017 · Resmed Error 018 · Resmed Error 17 · Resmed Error 18 · Resmed Error 3 · Resmed Error 6
Sources
- ResMed AirSense 10 device with humidifier — official user guide — verified 2026-09-03
- ResMed AirSense 11 — official user guide — verified 2026-09-03