Simplex Class A Zone False Alarms when a detector is removed

Fact 2001 2001 8021 Repack 2001 8023 Expanded Repack Class A Zone 2001 Class A Zone False Alarms when a detector is removed Zone false alarms when circuit is opened Need module information Need wiring information Zone wiring crossed in field The field wiring needs to be corrected so that the polarity does not change terminations in the bases condition only occurs when Voltage is applied from both ends of the zone in a Class A situation This in a cross feed of the Voltage signals causing a Short and an Alarm See also the following Solution Need wiring information on 2001 Repack Series Panel