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TROUBLESHOOTING THE LIGHTS
DANGER
THIS UNIT USES HIGH VOLTAGE CIRCUITS CAPABLE OF CAUSING SERIOUS
INJURY OR DEATH. ONLY A QUALIFIED ELECTRICIAN SHOULD TROUBLESHOOT
OR REPAIR ELECTRICAL PROBLEMS OCCURRING IN THIS EQUIPMENT
.
MAST LIGHTS ON BUT THE LIGHT OUTPUT IS LOW
1. Fixture and/or lens is dirty. Clean reflective surface inside fixture and both inside and outside surface of
glass lens. Use mild soap and water to clean lens. Other chemicals may have an adverse effect on the
glass.
2. Bulb worn due to normal use. Replace bulb.
3. Check the mast coil cord, mast junction box and mast light connections.
4. Generator output incorrect. Check the incoming voltage. Incoming voltage should be 120V +/- 5V. If the
voltage is incorrect, adjust the voltage regulator.
5. Low transformer output. The voltage from the transformer should read approximately 400VAC as the
light “strikes” (induces an arc), then drop and slowly rise back up to stabilize at 240-260VAC. On quick
disconnect models, measure across the junction box terminals when the light is unplugged. On hard
wired models, remove the mast junction box cover and insert the wire probes into the connector blocks
for the light and ground. If proper voltage is not achieved, perform capacitor check to determine if the
capacitor or coil needs to be replaced.
If problems persist, contact Magnum Power Products LLC Technical Service at 1-800-926-9768 for assistance.
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 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 15 psi (103 kPa). Add oil if required.
2. Visually inspect the engine for oil leaks.
3. If the oil level is good, restart the unit and verify the loss of oil pressure. Shut the engine down immediately
if the oil pressure value does not read 5 psi (34 kPa) within five seconds.
4. Check the oil pressure sender. To identify corrective action, refer to the troubleshooting section of the
engine operator’s manual provided with the unit.
HIGH COOLANT TEMPERATURE SHUTDOWN
1. Check the coolant level in the overflow jug.
2. Restart the engine and read the coolant temperature to verify a high coolant temperature shutdown.
Stop the engine immediately if the coolant temperature is 210°F (99°C) or more.
3. Allow the engine to cool. Add coolant to the overflow jug if it is low and then check the level of coolant
in the radiator. To access the radiator cap, you must remove the access panel from the top of the enclosure
directly above the radiator. Add coolant until it is 3/4 in. (1.9 cm) below the filler neck. Secure the radiator
cap back into its original position.
4. Check the radiator shroud and ducting for blockage and remove any foreign matter.
5. Inspect coolant hoses, engine block and water pump for visible leaks.
6. Check the tension of the serpentine drive belt for the water pump.
7. If no other problems are found, remove the load on the generator and restart the engine. Check the
coolant temperature and shut the engine down immediately if it starts to overheat. Refer to the engine
operator’s manual for additional information on engine overheating.
