Smoke Detector in 2nd Floor 2CW Electrical Room was in Alarm. attempted Cleaning Smoke/Heat Detector. Smoke/Heat Detector Continues to go into Alarm. Smoke/Heat Requires Replacement. (Siemans FP-11 Address 3-004) Customer will contact Siemans to order Replacement. System will remain in trouble until Smoke/Heat Detector Head is Replaced Head is Temporarily Removed to Reset System.