Resmed CPAP Error 15 Error Code

Updated 2026-08-29 · review status: manual-verified Last verified: 2026-08-29

Quick answer

Pressure sensor stuck low; pressure sensor issue - complete device testing in RSC, replace main PCB

Severity: high · DIY difficulty: intermediate

Safety

TBD - must be written per-code before publish

What Error 15 means

Pressure sensor stuck low; pressure sensor issue - complete device testing in RSC, replace main PCB

Code meaning varies by series

  • AirSense 11 - service and technical guide doc 398011/2 (manufacturer): Pressure sensor stuck low; pressure sensor issue - complete device testing in RSC, replace main PCB
  • AirSense 11 - ResMed official user guide: System fault, Error X: an unrecoverable error has occurred on the device. Contact your care provider; do not open the device.

Causes, ranked

  1. Causes not yet documented — verify against the service manual.

Parts & supplies for Resmed CPAP: filters, control boards, sensors, and common replacement parts.

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Sources

  • ResMed AirSense 11 Series Service and Technical Guide (doc 398011/2), Troubleshooting guide - numbered error messages — verified 2026-08-29
  • ResMed AirSense 11 User Guide (Americas, official): Error 4 = hot environment/blocked filter/water in tubing - cool, replace filter, power-cycle; all other numbered Errors = unrecoverable device fault, contact care provider, do not open — verified 2026-08-29