TP-6805 8/15 73Section 5 Troubleshooting
Fault Message CheckDescription/ CommentsAction
Fuel Leak Shutdwn * Shutdown The controller shut down the generator
because the digital input for Fuel Tank
Leak Shutdown (PIM) was activated
(low).
Check customer equipment
connected to the PIM module.
Fuel Leak Warning * Warning The digital input for Fuel Tank Leak
Warning (PIM) is active (low).
Check customer equipment
connected to the PIM module.
Fuel Level CrHi W arning * Warning The digital input for Critically High Fuel
Level Wa rning (PIM) is active (low).
Check customer equipment
connected to the PIM module.
Fuel Level High Warning * Warning The digital input for High Engine Fuel
Level Wa rning (PIM) is active (low).
Fuel Level Low Shutdwn * Shutdown The controller shut down the generator
because the digital input for Low Fuel
Level Shutdown (PIM) was activated
(low).
Check customer equipment
connected to the PIM module.
Fuel Level Low Warning * Warning The digital input for Low Fuel Level
Warning (PIM) is active (low).
GenBrkerOpen Warning
(Generator Circuit Breaker
Open)
Warning There is voltage at the generator set but
no voltage measured on the emergency
side of the ATS (Model RXT transfer
switch required).
Check line circuit breaker.
Check for and correct short
circuits or overloading on the
load side before resetting the
circuit breaker.
Ground Fault Warning * Warning The digital input for Ground Fault
Warning (PIM) is active (low).
Check customer equipment
connected to the PIM module.
High Lube Oil Temperature Warning Oil temperature higher than 300_F
(149_C).
See Overheats in the
troubleshooting charts in
Section 5.13.
High Lube Oil Temperature Shutdown Oil temperature higher than 325_F
(163_C).
Lo Crank Vlt Warning Warning During cranking, the controller
measured battery voltage less than
60% (7.2V or 14.4V) for 6 seconds or
more during cranking.
Check cranking battery.
Locked Rotor Shutdwn Shutdown The controller shut down the generator
because no rotation of the engine or
alternator was detected, for 3 seconds
or more, during cranking.
Check cranking circuit.
Troubleshoot the engine. See
Engine Service Manuals.
Check alternator connections
to controller and auxiliary
winding circuit breaker.
Troubleshoot the alternator.
MainPwrOverL Shutdwn Shutdown The internal current limit circuit has
tripped, indicating an overcurrent
condition on the DC power supply
circuit.
Check crank, run, and flash
relay circuits for short circuits.
See Section 5.11.1.
Update controller firmware to
version 6.7 or higher.
Maint Req’d Warning Warning Engine run time, or calendar days, has
exceeded the maintenance reminder
setting.
Change the oil and perform
other maintenance according
to the service schedule in
Section 2.1.
Reset the maintenance timer
after service.
See Section 2.3.
Not In Auto Warning Warning The RDC2 controller is not in AUTO.
The generator will not start from an ATS
or remote device.
The digital output for Not In Auto (PIM)
is active (contacts closed).
Press the Auto button to
ensure automatic system
operation.
OB1 CommLoss
(RBUS device
])
Warning Communication with option board #1
has been lost.
Check RBUS wiring to
inoperative option board.
* Programmable Interface Module (PIM) required.
[ Applies during exercise runs and normal operation.
] RBUS devices include the APM, PIM, LCM, load shed kit, RXT transfer switch, and the RXT combined interface board.
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