26
April 2004 / WHISPER 20 ULTRA / USA
TROUBLE SHOOTING
PROBLEM
CAUSE
SOLUTION
• Choked exhaust system, exhaust blocked, Check the exhaust system.
rubber exhaust hose kinked.
• Generator overloaded.
Reduce the electrical load (switch off some
consumers).
• 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 stop 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 10 up 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.
