TROUBLE SHOOTING
EN / M-SQ20 / 25 / November 2010
29
When the engine is cranking, well starting problems
almost always originate from lack of fuel or air bubbles in
the fuel pipes.
CAUTION!
When the engine does not start instantly,
prolonged cranking can fill up the exhaust
system with cooling water because of the
water injected exhaust. When the water
enters the cylinder through the valves this will
bring severe damage to the engine. When the
engine does not start and repeated cranking
is necessary shut off the seawater inlet. Open
the valve immediately after the engine has
started.
A failure code is displayed when a hardware failure at the
generator is detected.
Failure code
Problem
COMMUNICATION
Communication error between the panel end the generator
LOW START BAT
Starter battery voltage too low
ALTERNATOR
No output battery charging voltage
EXHAUST TEMP
Exhaust temperature is too high
WATER TEMP
Coolant temperature is too high
OIL PRESSURE
Oil pressure failure
LOW VOLTAGE
Generator AC output voltage is too low
HIGH CURRENT
generator is in overload
FREQUENCY
output frequency of the generator is too low
5.2.2
Trouble shooting table
PROBLEM CAUSE
SOLUTION
Diesel engine fails to crank, it
does not react at all, or the
starter makes clicking noises, or
the engine cranks very slowly
•
Almost certainly this is an electrical
problem. One other possibility is that
the engine is locked by water in the
cylinders or there is other severe
damage. Display will indicate “low
battery voltage”.
Check on water in the cylinder and further
damage by cranking. When there is water in
the cylinder, then deactivate the control
system, disconnect the battery, remove the
glow plugs. Crank the engine to remove the
water through the opening of the glow plugs.
Check oil on the presence of water and
change oil. Find out how the water did enter
the cylinder (check the air vent). Take
precautions to prevent it from happening
again. When there is no mechanical
malfunction the problem must be an electric
malfunction.
No reaction at all
•
Starter battery switched "OFF".
Check position of the battery switch and switch
"ON".
•
Faulty fuse on control panel
Replace fuse
No reaction or clicking noises,
or slow cranking
•
Starter battery voltage insufficient
(battery too weak).
Check battery voltage. Recharge the battery.
Inspect battery terminals and cables for a good
electrical connection (inspect against
corrosion, tattered wires, etc.)
•
To thick engine lubricating oil.
Change oil for a lower viscosity.
•
Starter motor faulty
Repair the starter motor
Starter is turning engine
smoothly, but engine fails to
start
•
Out of fuel or faulty fuel, water in the
fuel.
Fill up with fuel or replace with better quality.
•
Fuel solenoid is not working.
Check if solenoid comes in; if not check wire
connections and circuitcy to solenoid (see DC
wiring diagram).
•
Fuel lift pump is not working.
•
Fuel filter is blocked.
•
Air in fuel lines.
Check fuel filter and fuel lift pump: clean or
replace if necessary.
Bleed air from fuel system (see maintenance
section).
