False alarms with the Simplex 4098-5602 smoke detector can often be caused by a few common factors. Firstly, ensure that the detector is clean and free from any dust or debris that could trigger false readings. Additionally, check the detector’s placement to ensure it’s not positioned too close to sources of heat or steam, which can also lead to false alarms. If these steps don’t resolve the issue, it’s possible that the detector may need calibration or replacement. I recommend contacting a certified technician to further diagnose and address the problem.