Kohler 24VDC, 6VSG, 36VDC, 48VDC manual 5Controller Fault Messages

	Warning (W) or
Fault Message	Shutdown(SD)	Condition	Check
Enclosure	W	The enclosure door is open. (Optional	Check for evidence of unauthorized
Intrusion Alarm		communications kit required.)	access to the generator set. Close
			and lock the enclosure door.
Engine Oil	SD *	The LOP switch indicates low oil pressure for	Check for leaks in the lubrication
Pressure Low		more than 5 seconds. Function becomes active	system.
		30 seconds after crank disconnect (30 second	Check the oil level and add oil if the
		inhibit). Note: The low oil pressure shutdown
			level is low.
		does not protect against low oil level. Check the
		engine oil level regularly as recommended in
		Section 4.
Fuel Pressure	W	The fuel pressure switch measures low fuel	Check fuel supply and fuel lines.
Low		pressure (below 4.5 inches water column).
		(Optional communications kit required.)
Engine Speed	SD *	Engine speed exceeds 115% of the normal	Contact an authorized
High		running speed for more than 0.3 seconds.	distributor/dealer for service.
Exer Not Sch	W	Exercise not scheduled. No exercise is	See Section 3.6 for instructions to set
		scheduled on the controller.	the exerciser.
Generator	SD *	Generator voltage high. Output voltage exceeds	Contact an authorized
VoltageL1-L2		120% of the system nominal voltage for more	distributor/dealer for service.
High		than 2 seconds.
Lo Crank Vlt	W	Low cranking voltage. Battery voltage falls below	Charge or replace the battery.
		8 VDC for more than 6 seconds while the starter
		is engaged.
Locked Rotor	SD	No engine rotation is sensed during cranking.	Check the battery.
		Shuts down 3 seconds after the fault is detected.	Check for loose connections.
			Contact an authorized
			distributor/dealer for service.
MainPwrOverL	SD	Main power overload. An over current fault on the	Contact an authorized
Shutdown		controller output (short circuit).	distributor/dealer for service.
Not in Auto	W	The generator set is not in Automatic (standby)	Press AUTO to place the generator
		mode. Remote start and stop commands from a	set in Automatic mode, when
		transfer switch or remote switch will be ignored.	appropriate.
Over Crank	SD	Three unsuccessful starting attempts.	Check the fuel supply, spark plug, and
			battery.
			Check for loose connections.
			Contact an authorized
			distributor/dealer for service.
Reserve Oil	W	The oil makeup kit reservoir bottle is empty.	Add oil to the oil makeup kit reservoir.
Empty		(Optional communications kit and oil makeup kit
		required.)
Speed Sensor	SD	Engine speed sensing has failed or engine	Contact an authorized
Fault		stalled.	distributor/dealer for service.

* Engine cooldown runs before shutting down.

Figure 2-5Controller Fault Messages

TP-6843 1/13 Section 2 Generator Set Operation 21