TROUBLESHOOTING
EN / M-SQ 27 / August 2020
33
PROBLEM
CAUSE
SOLUTION
Engine starts, but stops after 10
seconds
•
Protection system stops the engine;
this can be caused by oil pressure
failure, lack of cooling water (exhaust
temperature alarm). Overload, loose
wire or faulty alarm switch. Digital
Diesel Control will help to indicate
failure.
See paragraph 2.5.5. and 3.2.2 for information
on the alarm system. Bypassing the switches
can help to confirm the failure. When there is
no real failure, it could be a faulty alarm switch
Engine stops by itself
(Digital Diesel Control will help
to indicate failures)
•
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
tripped).
Check oil level.
Check engine’s oil pressure and have it
repaired by WhisperPower.
•
Excessive heat in cooling system
(thermo-switch tripped).
•
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.
Check cooling water system flow: water
pump, inlet water filter, coolant flow.
•
Loss of compression by wear out or
damage.
Repair by WhisperPower service.
•
V-belt broken or loose.
Readjust or replace V-belt
•
Thermostat faulty
Check thermostat and replace
Sooty, black exhaust.
•
Generator is being overloaded. Digital
Diesel Control will indicate
“overload”.
Check electrical load and switch off some
consumers
•
Insufficient intake air.
•
Choked air cleaner.
Check intake air paths and filter, clean and
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
Loss of power
● Wrong measurement. Check if the load is measured correctly. Does the Amp meter show
the correct value? When calculating the load by multiplying voltage and amps this should
be done by using the exact values, taking into account the power factor of the consumers.
When any doubt, measure the power directly with an appropriate instrument.
•
Overfull oil sump.
Bring the oil to the correct level
•
Choked fuel filter.
Replace the fuel filter.
•
Choked air cleaner
Check air inlet openings; clean air cleaner.
•
Exhaust blocked.
Check the exhaust system.
•
Injector blocked.
Have the injector checked.
•
Loss of compression, sticking or
damaged piston ring.
Have the compression measured.
Clean or replace the rings.
•
Wear out of cylinder.
Have the compression measured and have
the
engine overhauled.
Over-temperature
•
Overload.
Take away the overload.
•
Low level of cooling oil or air in the
cooling system
Fill up with liquid and release air bubbles.
Check if there are air blocks in the system;
see the installation manual
•
Water inlet system blocked.
•
Broken impeller.
•
Water strainer choked
•
Heat exchanger choked.
Check the cooling system thoroughly.
Summary of Contents for M-SQ Pro 27
Page 18: ...INFORMATION 2 5 16 Terminal modes 115VAC 230VAC 400VAC 50H Fig 14 Terminal modes ...
Page 24: ......
Page 34: ...TROUBLESHOOTING PROBLEM CAUSE SOLUTION Faulty thermostat Check the thermostat or replace ...
Page 40: ...SPARE PARTS ...
Page 42: ...SPARE PARTS ...
Page 43: ...SPARE PARTS EN M SQ 27 August 2020 43 ...
