Once a year, remove the smoke detector from its base and clean the smoke detection slits with a vacuum cleaner or a soft brush. Do not open the detector to clean the inside.
When changing batteries, be sure to only use those batteries recommended by Somfy. Using batteries made by other manufacturers can damage the detector.
Finally, reattach the detector to its base and perform a test.
If the detector malfunctions, please contact Somfy Customer Support. An experienced agent will provide you with all the necessary instructions. Never try to repair the smoke detector yourself as this may invalidate your warranty.