TP-6881 7/15 61Section 4 Troubleshooting
Fault Message CheckDescription/ CommentsAction
Maint Req’d W arning 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 2.2.5.
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.
Oil Temperature High Warning Warning Oil temperature higher than 300_F
(149_C).
See Overheats in the
troubleshooting charts in
Section 4.11.
Oil Temperature High Shutdown Shutdown Oil temperature higher than 325_F
(163_C).
OB1 CommLoss
(PIM, load management device,
or RXT)
Warning Communications with option board #1
has been lost.
Check RBUS wiring to
inoperative option board.
OB2 CommLoss
(PIM, load management device,
or RXT)
Warning Communications with option board #2
has been lost.
Check RBUS wiring to
inoperative option board.
OB3 CommLoss
(PIM, load management device,
or RXT)
Warning Communications with option board #3
has been lost.
Check RBUS wiring to
inoperative option board.
OB4 CommLoss
(PIM, load management device,
or RXT)
Warning Communications with option board #4
has been lost.
Check RBUS wiring to
inoperative option board.
Oil Level Low Shutdwn * Shutdown The controller shut down the generator
because the digital input for Low Oil
Level Shutdown (PIM) was activated
(low).
Check customer equipment
connected to the PIM module.
Oil Level Low Warning * Warning The digital input for Low Oil Level
Warning (PIM) is active (low).
Check customer equipment
connected to the PIM module.
Oil Pressure Low Shutdwn Shutdown The low oil pressure switch was closed
for 5 seconds or more, indicating low oil
pressure. Function is inhibited until 30
seconds after crank disconnect.
Check for oil leaks.
Check the oil level and add oil
if low.
Check the oil pressure
sensor; see Engine Service
Manuals.
Oil Pressure OpenCR Warning Warning When the generator set is not running
and controller is in OFF or AUTO, the
low oil pressure switch is not working
properly.
Check the oil pressure switch
connection. Replace the LOP
switch if necessary.
See Section 5.12.2.
Over Crank Shutdwn Shutdown The controller shut down the generator,
and ceased cranking, because the
engine was not successfully started
after the completion of the last of the
crank cycles setting delay 15 seconds.
Check fuel supply. Check
cranking circuit.
Reset the thermostat.
Check cranking battery.
Troubleshoot engine; see
Engine Service Manuals.
RBUS ComError Warning Warning The controller has lost communications
with a PIM, load management device
that had previously been
communicating properly.
Check connection to the PIM
or load management device.
* Programmable Interface Module (PIM) required.
[ Applies during exercise runs and normal operation.
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