Section 3 Operation; Control Panel Operation; Led Indicators; Auto Standby Led (Green) - Generac Power Systems MAGNUM Owner's Manual

Section 3 Operation

Control Panel Operation

Turning the Key switch to the RUN position energizes the
ECU (Engine Control Unit), illuminates all LED indicators
(A) once, and displays a startup screen while a self test is
performed. If the display beeps for longer than one
second, it indicates a self test fault. Users can attempt to
rectify the fault by restoring factory defaults. Refer to the
Configuration Menu for details.
Refer to the Troubleshooting
information. Contact Generac Mobile Products for assis-
tance if the fault persists.
After the startup screen is cleared, the display shows
readings on its virtual gauges. Initially the analog gauges
are displayed, but the display uses the last displayed
screen on subsequent startups. Refer to
Store for details.
If the ECU is preheating when the Key switch is turned to
the RUN position, the Preheat LED is illuminated. Preheat
time varies with atmospheric and engine conditions. After
Preheat LED extinguishes, the crank the engine by turning
and holding the Key switch in the START position until the
engine starts.

LED Indicators

Auto Standby LED (Green)

A solidly illuminated Auto Standby LED indicates the Key
switch is in the AUTO START position and the system is
ready to start.

Preheat LED (Amber)

A solidly illuminated Preheat LED indicates the
engine is preheating. When the LED extin-
guishes, the preheat period is complete and the engine
may be cranked.
NOTE: The CANplus display only reports when the ECU
is requesting preheat. Cold starting aids may not be
installed in all engine configurations.

Engine Stop LED (Red)

STOP
A solidly illuminated Engine Stop LED indicates
the ECU has stopped the engine due to a fault.
Owner's Manual for Dry-Prime Diesel Trash Pumps
for fault troubleshooting
Preferred Screen
NOTE: ECU programming determines the response to
warnings and failures. Typically the ECU can be
programmed to shut down, derate, or run to failure. The
CANplus display only displays ECU reported conditions.

Warning LED (Amber)

A solidly illuminated Warning LED indicates a
warning reported by the ECU.
NOTE: The Warning LED is not used in Mechanical
Governor mode.
.
Figure 3-1. Control Panel

Throttle Control

The type of throttle operators installed, along with the
configured values of minimum requested RPM, idle RPM,
intermediate RPM, run RPM and maximum requested
RPM, determine throttle operation. The engine speed
can be adjusted above run RPM and below idle RPM, but
the requests can not fall below the set minimum
requested RPM or above the set maximum requested
RPM. The ECU determines how the engine responds to
the throttle requests and will not allow the engine speed
Operation
750
A
OFF
AUTO
AUTO START
RUN
STANDBY
START
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