Kohler 14RES

TP-6735 7/1748 Section 4 Controller
Code See SectionCheckConditionWorSD*Fault
LOP Low oil
pressure
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 the O/M.
Check for leaks in the lubrication
system.
Check the oil level and add oil if
the level is low.
Check low oil pressure switch
connections and operation.
Check the oil pump and
lubrication system.
—
O/M
5.10
Engine S/M
Lr Locked rotor SD No engine rotation is sensed
during cranking. Shuts down 3
seconds after the fault is
detected.
Check mag pickup connections
and operation.
Check for a locked rotor.
5.9.4
5.4
LrC Loss of voltage
regulator
communication
SD [ No communication between
controller and voltage regulator.
Disconnect and then reconnect
the battery to reset the controller.
Replace the controller if LrC
continues to appear.
4.13
NoEC No Ec setting SD The engine configuration (Ec)
parameter is not set. The Uu
setting may also have been
reset.
Use the controller keypad (RDC
only) or a PC with SiteTech
software to set the controller’s Ec
and Uu parameters.
4.8.4
4.10
I/M
OC Overcrank SD Three unsuccessful starting
attempts.
Check the fuel supply valves and
pressure.
Check spark plug and battery.
See Troubleshooting Chart,
generator set cranks but does not
start.
5.11
I/M
3.5
OF Over frequency
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).
Check system frequency setting
(parameter UU) on controller.
4.10
Measure output frequency and
adjust, if necessary.
5.9.5
Check governor system condition
and operation.
5.9
OS Overspeed SD [ Engine speed exceeds 115% of
the normal running speed for
more than 0.3 seconds.
Check governor settings and
operation.
5.9
OU Overvoltage SD [ Output voltage exceeds 120%
of the system nominal voltage
for more than 2 seconds.
Check output voltage and adjust,
if necessary (parameter 1P,
voltage adjust).
5.8
Check controller settings for
system voltage (Parameter Uu).
I/M
Check the calibration (SiteTech
software required). Controller
firmware version 2.04 or higher is
required for calibration.
4.11
SS Speed sensor
failure
SD Engine speed sensor has
failed.
Check the mag pickup resistance,
air gap, and operation.
5.9.4
* W = Warning; SD = Shutdown
[ Engine cooldown runs before shutting down.
Engine S/M = Engine Service Manual
I/M = Generator Set Installation Manual
O/M = Generator Set Operation Manual