Sure, I’d be happy to help. Firstly, have you checked the power source to ensure the detector is receiving adequate power? Sometimes a loose connection or power outage can cause issues. Additionally, inspect the detector for any visible damage or debris that may be obstructing the sensor. If everything looks fine externally, you may need to perform a reset on the detector according to the manufacturer’s instructions. If the issue persists after these steps, it’s possible the detector itself may be faulty and require replacement. Let me know if you need further assistance!