3520 Smoke detector No 2 end not functio ~~~~~ 3520 Smoke detector No 2 end not functio     FAULT #3520 SMOKE DETECTOR EXTER L NO 2 END NOT FUNCTION. ACTION: CHECK & CONFIRM FAULT AT #3520 NO 2 END. FURTHER CHECK- UNIT 24V PRESENT BUT SENSOR NO BLINGKING LIGHT. C/OUT NEW SENSOR- FAULT STILL OCCUR. CHECK CONTINUITY OF RED & BLACK WIRE- NO SUPPLY. CHANGE OUT NEW SMOKE DETECTOR UNIT. SECURITY CHECK-DONE OK. FUNCTION CHECK- SENSOR BLINKING, SMOKE TEST- ABLE TO FUNCTION & REFLECT AT TIMS.SHAHRIE/ALBARADO/BUDIMAN,14/07/2020