26 May 2004 / WHISPER 15 ULTRA / USA
TROUBLE SHOOTING
• Generator over energised. Check that the proper capacitors type are
installed and that they are connected correctly.
• Defective generator (windings, bearings, Generator must be sent to manufacturer for repair
or other). of damaged bearing or winding.
• Damaged engine. Repair by Mastervolt service.
Faulty Digital Diesel Control or sto solenoid.
Engine does not stop • Fuel solenoid is not switching off. Stop the engine manually by the stop handle.
on command. • Loss of control Check wire connections to solenoid.
Replace if necessary.
Engine exhaust smokes • Faint blue smoke - Increase load.
generally the result of light load
• Heavy blue smoke - Check the oil level.
caused by lubricating oil: Check the compression.
Overfull oil sump or worn cylinder bore,
stuck broken or worn rings.
• Black smoke - Check the fuel .
incomplete combustion caused by: Check for overload.
Overload, choked air filter, inlet temperature
too high, unsuitable fuel or water in fuel.
Display will help to identify failures
Engine starts, but stops • Protection system stops the engine; Refer to paragraph 2.5.5. and 3.2.2 for
after 10up to 30 seconds this can be caused by oil pressure information on the alarmsystem. Bypassing the
failure, lack of coolingwater switches can help to identify the failure.
(exhaust temperature alarm)
Loose wire or faulty alarm switch.
Display will help to identify failures
Engine stops by itself. • Overload or short circuit. Switch off the consumers and test for short circuit.
• Lack of fuel. Check fuel supply system: fuel lines, pump, filter,
valves, tank level, etc.
• Oil pressure low.(oil pressure switch Check oil level.
tripped). Check engine’s oil pressure and have it repaired
by Mastervolt.
• Excess heat in cooling system Check cooling water system flow: water pump,
(thermo-switch tripped). inlet water filter, coolant flow.
• Lack of cooling water (exhaust
switch tripped).
• Impeller broken.
• Cooling water blocked.
• Water strainer blocked.
• Air or water in the fuel.
• Blocked air or fuel filter.
• Loss of compression by wear out Repair by Mastervolt service.
or damage.
• V-belt broken or loose Readjust or replace V-belt.
• Thermostat faulty Check thermostat and replace.
Sooty, black exhaust. • Generator is being overloaded. Check electrical load and switch off some
• Display will indicate “overload” consumers.
• Insufficient intake air. Check intake air paths and filter, clean and
• Choked air filter. replace if necessary.
• Fuel injector faulty. Replace injector.
• Valve clearance incorrect. Readjust valve clearance.
• Poor fuel quality. Use better quality diesel.
• Poor quality lubricating oil. Use better quality oil.
• Continuous running with very low load. Increase load and have the engine run for a few
hours.
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