Kohler 14/20RESAL manual 3 Controller Fault Messages

	Warning (W) or
Fault	Shutdown (SD)	Condition	Check
Generator	SD *	Governed frequency exceeds 110% of the	Contact an authorized
Frequency High		system’s frequency setpoint for more than 10	distributor/dealer for service.
		seconds. Function becomes active 10 seconds
		after engine start (10 second inhibit).
Generator	SD *	Governed frequency falls below 90% of the	Reduce the load and restart the
Frequency Low		system frequency setting for more than	generator set.
		10 seconds, or 1 Hz below the system frequency	Contact an authorized
		setting for more than 60 seconds.	distributor/dealer for service.
		Function becomes active 10 seconds after
		engine start (10 second inhibit).
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.
Generator	SD *	Generator voltage low. Output voltage falls	Reduce the load and restart the
VoltageL1-L2		below 80% of the nominal system voltage for	generator set.
Low		more than 10 seconds.	Contact an authorized
			distributor/dealer for service.
Lo Crank Vlt	W	Low cranking voltage. Battery voltage falls	Charge or replace the battery.
		below 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	Contact an authorized
Shutdown		the 70 controller power 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.
Speed Sensor	SD	Engine speed sensor has failed or engine	Contact an authorized
Fault		stalled.	distributor/dealer for service.

* Engine cooldown runs before shutting down.

Figure 2-3 Controller Fault Messages

TP-6804 12/11 Section 2 Generator Set Operation 27