Generac Power Systems MAGNUM MLT4060MVD, Owner'S Manual

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General Troubleshooting
46 Owner’s Manual for MLT4060MVD Light Tower
If problems persist, contact Generac Mobile Products at 1-800-926-9768 for assistance.
Table 5-1. General Troubleshooting Guide
Problem Possible Cause Solution
Unit cranks, but will not start
Fuel level low. Check fuel level in tank.
Fuel flow obstructed.
Check fuel pump operation.
Inspect fuel supply hose from tank to fuel filter for
cracks and abrasion.
Check for gelled fuel in fuel system in cold
weather, especially at fuel filter.
Air in fuel system. Bleed air from fuel system.
Restricted air filter. Inspect air filter for blockage.
Glow plug(s) inoperable.
Refer to OEM engine operator’s manual for
additional information.
Unit starts, but stumbles and dies
Ambient temperature too low. Check if ambient temperature is within unit limits.
Intake heater inoperable. Check engine air inlet heater functionality.
High coolant temperature shutdown
Low coolant level.
Allow engine to cool, then check coolant level in
radiator. Add coolant if needed.
Blockage in radiator.
Inspect radiator surroundings for blockage and
remove any foreign matter.
Debris on radiator face.
Broken coolant pump belt.
Inspect for visible leaks. Check tension of water
pump drive belt.
Cooling fan inoperable.
Remove load on generator and restart engine.
Check coolant temperature and shut engine down
immediately if it starts to overheat.
Low oil pressure shutdown
Oil level low. Check oil level. Add oil if necessary.
Oil pump inoperable. Contact an ASD.
Unit stalls when export power is used Load exceeds unit rating.
Turn outlet breaker ON and load sense switch
OFF, confirm generator output is 60hz + or - 2hz.
Reapply load.
One or more lights do not turn on
Light breaker tripped. Check light breakers.
Lights not turned on.
Check electronic control to see if lights are on.
Turn lights on.
The lights are flashing
Dusk-to-dawn sensor
adjustment needed.
Adjust the dusk-to-dawn sensor according to
Dusk to Dawn Sensor
.
Generator frequency too low. Check if AC frequency is >40hz.