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ADJUSTING THE DISPLAY BACKLIGHTING
The brightness on the Liquid Crystal Display (LCD) window may be adjusted by the operator whenever the Magnum
Digital Controller (MDC) is powered up.
Note:
Anytime an “*” is displayed on the LCD window, the text or set point cannot be changed without the use of a
password. Contact Magnum Power Products LLC Technical Support for assistance.
1. Press and hold “Enter,” then press “
” or “
” on the diagnostics keypad to increase or decrease the
brightness as needed.
2. Release the “Enter” button when the desired brightness is attained.
RESETTING THE “TIME TO SERVICE” REMINDER
The Magnum Digital Controller (MDC) will display the message “WrnMaintenance” when the unit is due for
maintenance or service. The maintenance or service interval is set at 250 hours of engine running time. Once the
unit has been serviced, the “Time to Service” reminder needs to be reset to the 250 hour interval. The following
procedure demonstrates how to reset the running hours to 250:
1. With the unit shut down, power up the controller with the “Control On/Off” Toggle Switch. The initialization
screen will be displayed. The controller will toggle automatically to the “Ready” Display screen.
2. Press the “Page Select” button. The next screen will display lines of text; starting with the word “Password”,
then “Basic Settings”, “Engine Params”, “Engine Protect”, etc. The top line has a cursor (>) before the
word “Password”.
3. Press the “
” button to move the cursor (>) down to the “Engine Protect” line of text.
4. Press Enter. “WrnMaintenance” will appear at the top left of the display screen. The current service time
hour setting remaining (0) will be one line below it on the right side.
5. Press Enter. The current run time in hours will now appear on the left side of the display screen, directly
under “WrnMaintenance.”
6. Press the “
” button and reset the current run time hour setting to 250. If you pass the 250 time interval
use the “
” button to get back to the 250 time interval.
7. Press Enter to save the current run time hour setting.
8. Move the “CONTROL ON/I” toggle switch to the “CONTROL OFF/O” position.
TROUBLESHOOTING AUTOMATIC SHUTDOWN CONDITIONS
WARNING
Allow engine to cool before performing any troubleshooting procedures. Contacting
the engine when it is hot will cause severe personal injury.
LOW FUEL LEVEL SHUTDOWN
1. Check the fuel level on the Liquid Crystal Display (LCD) window. Confirm that the generator is sitting
level to ensure an accurate reading.
2. Check for leaks in the fuel tank. The fuel tank should not run dry under normal circumstances. The engine
controller will shut the engine down when there is 5% of fuel remaining in the tank. This is done to keep
the fuel lines from running dry.
3. If the fuel level is good and no leaks are found, check the fuel level sender and the connecting wiring
for damage. To check for continuity between the sender and the engine controller, remove the appropriate
bolts from the control panel to access the inside of the control box. Consult the DC wiring diagram for
the proper path between the engine controller and the fuel level sender.
LOW OIL PRESSURE SHUTDOWN
1. Check the level of the engine oil with the dipstick. The engine controller will shut the engine down when
the oil pressure is less than 20 psi (138 kPa). Add oil if required.
2. Visually inspect the engine for oil leaks.
