Kohler 15RES, Manual

Page: 16 / 36

TP-6344 4/09 16 Section 2 Operation
Code Fault Description Check
AF Auxiliary fault
input shutdown Input from a customer-supplied switch that closes
when the fault is active. The generator set shuts
down 0.3 seconds after the fault is detected and will
not start when the fault is active (input is grounded).
This protection becomes active 3 seconds after
crank disconnect. Check the cause of the auxiliary fault.
HE High engine
temperature
shutdown Shutdown occurs if the engine coolant temperature
exceeds the maximum temperature for more than
5 seconds. This protective becomes active after the
engine reaches the crank disconnect speed. Check for blocked air inlets and exhaust
outlets.
LCL Low coolant
level Not used. —
LOC Loss of coolant Not used. —
LOP Low oil
pressure
shutdown Shutdown occurs if a low oil pressure condition
exists for more than 5 seconds. This protective
becomes active 30 seconds after the engine has
reached crank disconnect speed (30 second inhibit). Check for leaks in the lubrication system.
Check the oil level and add oil if the level is
low.
OC Overcrank
shutdown Shutdown occurs after 3 unsuccessful starting
attempts. The crank cycle is set for three starting
attempts of 15 seconds cranking and 15 seconds
rest.
The generator set also shuts down if no engine
rotation is sensed during cranking. Shuts down
1 second after the fault is detected. Check the fuel supply, spark plug, and
battery.
Check for loose connections.
Contact an authorized Kohler distributor/
dealer for service if problem continues.
OF Overfrequency
shutdown Shutdown occurs when the governed frequency
exceeds 110% of the system’s frequency setpoint
for more than 5 seconds. This protective becomes
active 10 seconds after engine start (10 second
inhibit). Contact an authorized Kohler
distributor/dealer for service if problem
continues.
OS Overspeed
shutdown Shutdown occurs if the engine speed exceeds 115%
of the normal running speed for more than
0.3 seconds. Contact an authorized Kohler
distributor/dealer for service if problem
continues.
OU Overvoltage
shutdown Shutdown occurs if the voltage exceeds 120% of the
system nominal voltage for more than 2 seconds. Contact an authorized Kohler distributor/
dealer for service if problem continues.
UF Underfrequency
shutdown Shutdown occurs when the governed frequency falls
below 90% of the nominal system frequency for
more than 5 seconds or below 59 Hz for more than
60 seconds. This protective becomes active
10 seconds after engine start. (10 second inhibit). Reduce the load and restart the generator
set.
Contact an authorized Kohler
distributor/dealer for service if problem
continues.
UU Undervoltage
shutdown Shutdown occurs if the voltage falls below 80% of
the nominal system voltage for more than
10 seconds. Reduce the load and restart the generator
set.
Contact an authorized Kohler distributor/
dealer for service if problem continues.
SCF0 Software
Communication
Fault 0 Indicates a software or communication problem
within the
ADC 2100
.
Replace the controller.
Figure 2-4 ADC 2100 Fault Shutdown Codes