Operating instructions

Fault code Alarm text Meaning Task
065 L1 P-FUEL Fuel supply pressure too low
(1st limit)
1.
Check fuel lines for leaks; re-
pair defective lines.
2.
Clean fuel prefilter
3.
Flush fuel prefilter
4.
Replace filter element of fuel
prefilter.
5.
Fuel filter replacement
(→ Page 84).
6.
If fault is not rectified: Contact
Service.
066 L2 P-FUEL Fuel supply pressure too low
(2nd limit)
1.
Check fuel lines for leaks; re-
pair defective lines.
2.
Clean fuel prefilter
3.
Flush fuel prefilter
4.
Replace filter element of fuel
prefilter.
5.
Fuel filter replacement
(→ Page 84).
6.
If fault is not rectified: Contact
Service.
067 L1 T-COOLANT Coolant temperature too
high (1st limit). Warning
Reduce power.
068 L2 T-COOLANT Coolant temperature too
high (2nd limit).
Automatic engine shutdown.
1.
Allow the engine to cool down.
2.
Check coolant cooler (elements
etc.) and clean contaminated
parts (see manufacturer's docu-
mentation).
3.
Re-start the engine
(→ Page 32).
4.
If fault occurs repeatedly: Con-
tact Service.
081 RAIL LEAKAGE HP fuel system leaking, sys-
tem contains air
Contact Service.
082 RAIL PRESSURE HIGH Pressure in HP fuel system
exceeds specified value;
Solenoid valve of HP fuel
control block jamming or
wiring to solenoid valve de-
fective
Contact Service.
083 RAIL PRESSURE LOW Pressure in HP fuel system
lower than the specified val-
ue;
HP fuel control block defec-
tive or system leaking.
NOTE:
With very large generators
having a run-out time of
more than > 20 sec this
alarm is not a relevant fault.
Contact Service.
087 L1 LEV. WATER IN
FUEL
Water level in fuel prefilter
too high
Check fuel prefilter
089 ENGINE SPEED LOW Engine speed lower than
200 rpm;
Automatic engine shutdown.
Re-start the engine (→ Page 32).
M015675/06E 2013-04 | Troubleshooting | 43
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