DreamStation Error Codes & Troubleshooting — Common Alerts Explained

Hello. If your Philips DreamStation is displaying an error code on its screen, this guide explains what the code means and how to respond. Error Codes — DreamStation 1. Error E-0 or Startup Error: The machine detected a problem during its self-test at startup. Unplug the machine, wait 30 seconds, and restart. If E-0 appears again, the machine needs service. Error E-1 or Flow Sensor Error: The internal flow sensor is not reading correctly. This may be caused by water in the machine or a blocked air inlet. Check for water by tilting the machine carefully. If you hear or see water, do not use the machine. If there is no water, try the reset procedure above. Error E-2 or Pressure Error: The machine cannot reach the prescribed pressure. Check that the air outlet is fully connected to the tubing. Make sure the tubing is not kinked. If the tube and mask are connected properly and the error persists, the machine may need calibration by your DME provider. Therapy Interruption Alert: The machine paused therapy due to a detected issue. This is not always an error — it may occur if the mask was removed during sleep or if a large leak was detected. Review the session report in DreamMapper for details. DreamStation 2 Alerts. Low Humidifier Level Alert: The DS2 integrated humidifier uses a sealed water tank. This alert means the tank needs refilling. Remove the humidifier module from the back of the machine, fill it with distilled water to the fill line, and reinsert. Machine Will Not Power On: Check the power brick — DreamStation uses a DC power adapter similar to ResMed. The indicator light on the brick should be lit. If the machine still does not respond, try a different outlet and a different power cord if available. When to Call Your Provider: If an error code appears repeatedly, if the machine sounds different than normal — grinding, whirring, or high-pitched noise — or if your therapy hours drop suddenly without explanation, call your DME provider. Do not attempt to open or repair the machine yourself as this voids the warranty. Still need help? Find a CPAP provider near you →