Dorma 500 (REF 501V)Recalls & reported problems

Summary

The FDA's MAUDE database contains 15 adverse event reports that list this exact device (DI 00606959038516), received between Apr 6, 2022 and Mar 12, 2026 — classified as 15 malfunctions.

The most frequently reported specific device problem is “Degraded” (15 reports).

1 other recall cover devices cleared under the same FDA submission (K130077); they may or may not involve this specific model.

Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. How this data works · Data updated Oct 13, 2026.

Most reported problems

Recent adverse event reports

The 15 most recent of 15 reports, in the reporter's own words as published by the FDA.

• MalfunctionMar 12, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THEY COULD NOT CONFIRM THE CUSTOMER'S ALLEGATION AND THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24579454 ↗
• MalfunctionMar 3, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THERE WERE NO ERROR CODES FOUND. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THEY CONFIRM THE CUSTOMER'S ALLEGATION AND THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24494471 ↗
• MalfunctionFeb 24, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24438620 ↗
• MalfunctionFeb 24, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THEY COULD NOT CONFIRM THE CUSTOMER'S ALLEGATION AND THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24437663 ↗
• MalfunctionFeb 24, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THEY CONFIRM THE CUSTOMER'S ALLEGATION AND THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24425634 ↗
• MalfunctionFeb 24, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24425628 ↗
• MalfunctionFeb 23, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THERE WAS NO ERROR CODES FOUND. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THEY CONFIRM THE CUSTOMER'S ALLEGATION AND THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24415515 ↗
• MalfunctionFeb 20, 2026Degraded

  A DEVICE WAS RETURNED TO A THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THERE WERE VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24406042 ↗
• MalfunctionFeb 20, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THERE WERE NO ERROR CODES FOUND. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THEY COULD CONFIRM THE CUSTOMER'S ALLEGATION AND THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24400466 ↗
• MalfunctionFeb 20, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THERE WERE NO ERROR CODES FOUND. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THEY COULD CONFIRM THE CUSTOMER'S ALLEGATION AND THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24400432 ↗
• MalfunctionFeb 19, 2026Degraded

  A DEVICE WAS RETURNED TO THIRD-PARTY SERVICE CENTER IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. DURING THE EVALUATION OF THE DEVICE AT THE THIRD-PARTY SERVICE CENTER, THE DEVICE WAS VISUALLY INSPECTED AND FOUND EVIDENCE OF FOAM DEGRADATION. THE DEVICE POWERED ON AND AIRFLOW WAS CONFIRMED. THE DEVICE'S DOWNLOADED LOGS WERE REVIEWED BY THE THIRD-PARTY SERVICE CENTER. THERE WERE NO ERROR CODES FOUND. THE THIRD-PARTY SERVICE CENTER CONCLUDES THAT THEY CONFIRM THE CUSTOMER'S ALLEGATION AND THERE WAS A VISIBLE FOAM DEGRADATION AND UNIT GOT SCRAPPED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 24389516 ↗
• MalfunctionFeb 24, 2024Degraded; Degraded

  THE MANUFACTURER WAS CONTACTED IN REFERENCE TO THE VOLUNTARY FIELD SAFETY NOTICE / RECALL NOTIFICATION RELATED TO THE SOUND ABATEMENT FOAM IN CERTAIN CPAP, BIPAP, AND MECHANICAL VENTILATOR DEVICES. THE MANUFACTURER RECEIVED INFORMATION ALLEGING AN ISSUE RELATED TO A CPAP DEVICE'S SOUND ABATEMENT FOAM. THE PATIENT HAS ALLEGED VISUALIZATION OF BLACK PARTICLES AND THE DEVICE IS NOISY. IN ADDITION, THE PATIENT ALSO REPORTED COUGH. THERE WAS NO REPORT OF SERIOUS PATIENT HARM OR INJURY. THE MANUFACTURER'S INVESTIGATION IS ONGOING. A FOLLOW-UP REPORT WILL BE SUBMITTED WHEN THE MANUFACTURER'S INVESTIGATION IS COMPLETE.

  Patient problems: Cough

  MAUDE report 18774762 ↗
• MalfunctionJul 24, 2022Degraded; Degraded

  THE MANUFACTURER RECEIVED INFORMATION ALLEGING AN ISSUE RELATED TO A CONTINUOUS POSITIVE AIRWAY PRESSURE (CPAP) DEVICE'S SOUND ABATEMENT FOAM. THE PATIENT ALLEGED VISUALIZATION OF BLACK PARTICLES IN MASK, TUBE AND HUMIDIFIER CIRCUIT INLET. THERE WAS NO REPORT OF PATIENT HARM/INJURY. THE MANUFACTURER'S INVESTIGATION IS ONGOING. A FOLLOW-UP REPORT WILL BE SUBMITTED WHEN THE MANUFACTURER'S INVESTIGATION IS COMPLETE.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 15090636 ↗
• MalfunctionJun 16, 2022Degraded; Degraded

  THE MANUFACTURER RECEIVED INFORMATION ALLEGING AN ISSUE RELATED TO A CPAP DEVICE'S SOUND ABATEMENT FOAM. THE PATIENT HAS ALLEGED TO EXPERIENCING HEADACHES AND BURNING SENSATION IN THE NOSE AND THROAT. THERE WAS NO REPORT OF PATIENT HARM OR INJURY. THE MANUFACTURER'S INVESTIGATION IS ONGOING. A FOLLOW-UP REPORT WILL BE SUBMITTED WHEN THE MANUFACTURER'S INVESTIGATION IS COMPLETE.

  Patient problems: Burning Sensation; Headache

  MAUDE report 14714276 ↗
• MalfunctionApr 6, 2022Degraded; Degraded

  THE MANUFACTURER RECEIVED INFORMATION ALLEGING AN ISSUE RELATED TO A CONTINUOUS POSITIVE AIRWAY PRESSURE (CPAP) DEVICE'S SOUND ABATEMENT FOAM. THE USER ALLEGED VISUALIZATION OF BLACK SPOTS ON THE TUBE OF THE MASK. THERE WAS NO REPORT OF PATIENT HARM/INJURY. THIS ISSUE WAS REPORTED TO THE FDA PER 21 CFR 806. THE DEVICE WILL BE CORRECTED PER RES 88058.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 14021549 ↗

Recalls under the same FDA submission

These recalls involve devices cleared under K130077. One submission often covers many models, so check the product and lot details in each record.

• Z-1974-2021 · Jun 14, 2021 · Open, Classified
  SystemOne (Q-Series), DreamStation, DreamStation Go, Dorma 400, Dorma 500, REMstar SE Auto Noncontinuous Ventilators The Philips Respironics E30 ventilator is intended to provi