1. LED indicates that the auxiliary supply is switched on.
2. LED indicates that the unit is OK.
3. LED indicates that an alarm is inhibited, it could, for example, be low frequency when the genset is stop-
ped.
4. LED indicates that auto mode is selected.
5. LED is green if the mains is present and OK. LED is red at a measured mains failure. LED is flashing
green when the mains returns during the "mains OK delay" time.
6. LED indicates that the mains breaker is closed. LED is flashing yellow if the "MB spring loaded" signal
from the breaker is missing or the MB load time has not expired.
7. LED green light indicates that the generator breaker is closed. LED yellow light indicates that the genera-
tor breaker has received a command to close on a black bus, but the breaker is not yet closed due to
interlocking of the GB. LED is flashing yellow if the "enable GB black close" or the "GB spring loaded"
signal is missing or the GB load time has not expired.
8. LED green light indicates that the voltage/frequency is present and OK.
9. LED indicates that the generator is running.
10. LED flashing indicates that unacknowledged alarms are present. LED fixed light indicates that ALL alarms
are acknowledged, but some are still present.
AGC-4 quick start guide 4189340689 UK Display push-buttons and LEDs
DEIF A/S Page 21 of 26