This issue could be due to a variety of reasons. Firstly, ensure that the detector is installed in an appropriate location, away from sources of heat, steam, or direct sunlight. Check for any obstructions or debris that might be affecting the sensor’s performance. Additionally, make sure the detector is not nearing the end of its lifespan, as older detectors can become more prone to false alarms. If the problem persists, it may be necessary to adjust sensitivity settings or consult the manufacturer for further assistance.