Kohler 14/20RES Operation Manual page 25

Warning (W) or
Shutdown (SD) Condition
Code Fault
AF Auxiliary fault
input
HE High engine
temperature
LOP Low oil
pressure
OC Overcrank
Lr Locked rotor
OF Overfrequency
OS Overspeed
US Underspeed
OU Overvoltage
UF Underfrequency
UU Undervoltage
HB High battery
voltage
* Engine cooldown runs before shutting down.
(continued on next page)
TP-6734 5/10
SD * An optional customer-connected input is
closed.
SD * Engine coolant temperature exceeds the
maximum temperature for more than
5 seconds. Function becomes active
after crank disconnect.
SD * The LOP switch indicates low oil
pressure for more than 5 seconds.
Function becomes active 30 seconds
after crank disconnect (30 second
inhibit).
Note: The low oil pressure shutdown
does not protect against low oil level.
Check the engine oil level regularly as
recommended in Section 3.
SD Three unsuccessful starting attempts.
SD No engine rotation is sensed during
cranking. Shuts down 3 seconds after
the fault is detected.
SD * Governed frequency exceeds 110% of
the system's frequency setpoint for more
than 5 seconds. Function becomes
active 10 seconds after engine start
(10 second inhibit).
SD * Engine speed exceeds 115% of the
normal running speed for more than
0.3 seconds.
SD * Engine speed drops below 85% of the
normal running speed for more than
0.3 seconds.
SD * Output voltage exceeds 120% of the
system nominal voltage for more than
2 seconds.
SD * Governed frequency falls below 90% of
the system frequency setting for more
than 5 seconds, or 1 Hz below the
system frequency setting for more than
60 seconds.
Function becomes active 10 seconds
after engine start. (10 second inhibit).
SD * Output voltage falls below 80% of the
nominal system voltage for more than
10 seconds.
W Engine starting battery voltage rises
above 125% of the battery voltage setting
for more than 10 seconds when the
engine is running. Not operative during
the engine crank cycle.
Clears when the battery voltage returns
to an acceptable level.
Check
Check customer-supplied equipment.
Check for blocked air inlets and
exhaust outlets.
Check for leaks in the lubrication
system.
Check the oil level and add oil if the
level is low.
Check the fuel supply, spark plug,
and battery.
Check for loose connections.
Contact an authorized
distributor/dealer for service.
Contact an authorized
distributor/dealer for service.
Contact an authorized
distributor/dealer for service.
Reduce the load.
Contact an authorized
distributor/dealer for service.
Contact an authorized
distributor/dealer for service.
Reduce the load and restart the
generator set.
Contact an authorized
distributor/dealer for service.
Reduce the load and restart the
generator set.
Contact an authorized
distributor/dealer for service.
Check the battery rating and
condition.
Check the battery charger operation.
Section 2 Operation 25