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FlashGuard 2000B Troubleshooting Guide
Page 8
Section 10 All lights are in sync, but there is a double-flash, or flashing faster
than 40 flashes per minute (fpm).
Possible Cause: More than one sync monitor board is set as master.
Diagnostic Test: Inspect the DIP switches on each sync monitor board. In the master power
supply, DIP switch S1-4 should be set to “OFF,” which is the master
position. In all the other power supplies, this switch 4 should be set to “ON,”
which is the slave position
Corrective Action: Reconfigure sync monitor boards. Refer to the manual for correct positions.
Section 11 Master unit switches to night mode at night, but slave units remain
in day mode.
Possible Cause: Interconnecting wire between master and slave power supplies missing.
Diagnostic Test: Inspect wiring between power supplies. TB1 position 1 should be daisy-
chained between each power supply, per the installation wiring diagram for
multiple units. Note: Do not interconnect TB1-2 between power
supplies.
Corrective Action: Install interconnecting wiring.