Warning (W) or
Shutdown (SD)
Governed frequency exceeds 110% of the system’s
frequency setpoint for more than 10 seconds. Function
becomes active 10 seconds after engine start (10 second
inhibit).
Contact an authorized dealer
for service.
Governed frequency falls below 90% of the system
frequency setting for more than 10 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).
Reduce the load and restart the
generator set.
Check enclosure thermostat
and reset if tripped. Contact an
authorized
dealer for service.
Low cranking voltage. Battery voltage dropped below 3.5
VDC during engine cranking.
Charge or replace the battery.
No engine rotation is sensed during cranking. Shuts down 3
seconds after the fault is detected.
Check the battery.
Check for loose connections.
Contact an authorized dealer
for service.
Main power overload. An over current fault on the 70
controller output (short circuit).
Contact an authorized dealer
for service.
The generator set is not in Automatic (standby) mode.
Remote start and stop commands from a transfer switch or
remote switch will be ignored.
Press AUTO to place the
generator set in Automatic
mode, when appropriate.
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 Scheduled Maintenance section.
Check for leaks in the
lubrication system.
Check the oil level and add oil if
the level is low.
Check the oil pressure switch
and wiring.
If the fault persists, do not run
the generator set. Contact an
authorized dealer for service.
Three unsuccessful starting attempts.
Check the fuel supply, spark
plug, and battery.
Check for loose connections.
Contact an authorized dealer
for service.
Engine speed sensor has failed or engine stalled.
Contact an authorized dealer
for service.
Generator voltage high. Output voltage exceeds 120% of the
system nominal voltage for more than 2 seconds.
Contact an authorized dealer
for service.
Generator voltage low. Output voltage falls below 80% of the
nominal system voltage for more than 10 seconds.
Reduce the load and restart the
generator set.
Check enclosure thermostat
and reset if tripped. Contact an
authorized dealer for service.
Engine cooldown runs before shutting down.
Figure 25 Controller Fault Messages
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