Generac Power Systems Stationary Emergency Generator, Owner'S Manual

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CHECK ENGINE MESSAGE
The control system has detected an emissions related fault. This
fault cannot be cleared using the control panel interface. The unit
will continue to operate in automatic mode. Contact your local
servicing dealer.
UNDER-FREQUENCY SHUTDOWN ALARM
After starting, if the generator stays under frequency for more than
30 seconds, it will shutdown.
LOW BATTERY ALARM
While running, if the average battery voltage falls below 11.9 volts
for one (1) minute, the low battery alarm will be displayed.
LOW BATTERY WARNING
The microprocessor will continually monitor the battery voltage
and display the Low Battery Voltage message if the battery voltage
falls below 12.2 Volts for one (1) minute.
No other action is taken on a low battery warning condition. The
warning will automatically clear if the battery voltage rises above
12.2 volts.
NOTE:
The battery sentinel is a separate feature that monitors battery
condition.
LOW COOLANT LEVEL ALARM
This is a shutdown alarm. The sensor will be continuously moni-
tored. If an error condition is seen for five (5) consecutive sec-
onds, the alarm will be displayed.
MISSING CAM PULSE ALARM
This is a shutdown alarm. The alarm will activate after five (5)
seconds of continuously missing cam pulses.
MISSING CRANK PULSE ALARM
This is a shutdown alarm. The alarm will activate after 12 con-
secutive revs where crank pulses are missing.
LOW FUEL PRESSURE WARNING
Fuel pressure is monitored by a digital sensor with a fixed setpoint
of below five (5) inches water column.
GOVERNOR SENSOR FAULT ALARM
The governor position is monitored by an analog feedback signal. If
the throttle position is seen outside of the normal operating range,
a shutdown alarm is displayed. If the throttle is commanded to
move, and no movement is seen, a shutdown alarm is displayed.
WIRING ERROR ALARM
When power is first apllied to the contoller, the software will per-
form a check on the wiring of the transfer output, and ensure it
does not have high voltage on the wire. If this is the case, it will
signal a miswire alarm and will not run. The test can be skipped
by use of the escape key.
UNDERVOLTAGE ALARM
If the generator voltage falls below 60% for >5 seconds, an alarm
will be issued.
8-5
CntrlNexus001 Rev . E 12/11
Control Panel
Figure 1 – Generator Control Panel