How to fix Er 01 on SEFAM Humidifier?
- AAlexa KellyAug 26, 2025
The Er 01 error on your SEFAM Humidifier indicates a patient settings problem. To fix this, reinitialize the default settings by holding down the right control button for 2 seconds until the “DEF?” message appears. Then, press the On/Off button to accept. The device will reset to its default values, allowing you to set your desired values again. If the error persists, it may require professional assistance.