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TP-6810 11/1324 Section 2 Generator Set Operation
Fault
Warning (W) or
Shutdown (SD)
Condition Check
Exer Not Sch W Exercise Not Scheduled. No exercise has been
scheduled on the RDC2 controller.
See Section 2.5 for instructions to set
the exerciser.
Generator
Frequency High
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
distributor/dealer for service.
Generator
Frequency Low
SD 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.
Contact an authorized
distributor/dealer for service.
Generator
VoltageL1-L2
High
SD Generator Voltage High. Output voltage
exceeds 120% of the system nominal voltage for
more than 2 seconds.
Contact an authorized
distributor/dealer for service.
Generator
VoltageL1-L2
Low
SD 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.
Contact an authorized
distributor/dealer for service.
Lo Crank Vlt W Low cranking voltage. Battery voltage falls
below 60% of system battery voltage for more
than 6 seconds while the starter is engaged.
Charge or replace the battery.
Locked Rotor SD 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
distributor/dealer for service.
MainPwrOverL
Shutdown
SD Main power overload. An over current fault on
the 70 controller power output (short circuit).
Contact an authorized
distributor/dealer for service.
Not in Auto W 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.
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
Fault
SD Engine speed sensor has failed or engine
stalled.
Contact an authorized
distributor/dealer for service.
Total Power
High ShtDwn
SD Measured load is greater than 102% of the
generator set power rating for more than 1
minute. (38RCL only)
Reduce the load.
Figure 2-5 Controller Fault Messages