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TP-6905 6/14 25Section 2 Generator Set Operation
Fault (RDC2)
Fault (OnCuer
Plus)
Condition Check
Frequency High
Shutdwn
High Frequency 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.
Frequency Low
Shutdwn
Low Frequency 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 by turning off
appliances and restart the generator
set.
Contact an authorized
distributor/dealer for service.
Genset S/N
Unaval Warning
Unavailable
Genset Serial
Number
Generator set serial number is unavailable. Contact an authorized
distributor/dealer for service. See
section 3.11.
IAT High 1
Warning
Iat Higher
Than
Expected 1
Engine manifold air temperature is too high. Contact an authorized
distributor/dealer for service and
provide the fault code.
IAT Volt Hi
Warning
Iat High
Voltage
The ECM reported an Engine Air
Temperature/Manifold Absolute Pressure
Sensor (TMAP) error.
Contact an authorized
distributor/dealer for service and
provide the fault code.
IAT Volt Lo
Warning
Iat Low
Voltage
The ECM reported an Engine Air
Temperature/Manifold Absolute Pressure
Sensor (TMAP) error.
Contact an authorized
distributor/dealer for service and
provide the fault code.
Invalid Csum
Warning
Flash Csum
Invalid
An ECM error occurred. Contact an authorized
distributor/dealer for service and
provide the fault code.
Lo Crank Vlt
Warning
Low Cranking
Voltage
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
Shutdwn
Locked Rotor No engine rotation is sensed during cranking.
Shuts down 3 seconds after the fault is
detected.
Check the battery.
Check for loose connections.
Check for obstruction of alternator or
engine.
Contact an authorized
distributor/dealer for service.
MainPwrOverL
Shutdwn
Main Power
Overload
Main power overload. An over current fault on
the 70 controller power output (short circuit).
Check for shorted run relay. Check
wiring for short circuits.
Contact an authorized
distributor/dealer for service.
Maint Req’d
Warning
Maintenance
Required
Warning
Engine maintenance is due. Check the maintenance schedule in
the operation manual for tasks such
as changing the oil, spark plugs or the
air filter.
Not in Auto
Warning
Not In Auto 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.
Oil Pres Low
Shutdwn
Low Oil
Pressure
The engine ECM indicates low oil pressure.
Note: The low oil pressure shutdown does not
protect against low oil level. Check the engine
oil level regularly as recommended in
Section 4.
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.