Kohler 14RESA Manual page 74

Fault Message
OB2 CommLoss
(RBUS device )
]
OB3 CommLoss
(RBUS device )
]
OB4 CommLoss
(RBUS device )
]
Oil Level Low Shutdwn *
Oil Level Low Warning *
Oil Pressure Low Shutdwn
Oil Pressure OpenCR Warning
Over Crank Shutdwn
RBUS ComError Warning
Spd Sens Flt Shutdwn
(Speed sensor fault)
Volts L1-L2 (AB) High Shutdwn
Volts L1-L2 (AB) Low Shutdwn
* 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.
Figure 5-12 Fault Messages Displayed on the RDC2 Controller
74 Section 5 Troubleshooting
Action Description/ Comments
Warning Communication with option board #2
has been lost.
Warning Communication with option board #3
has been lost.
Warning Communication with option board #4
has been lost.
Shutdown The controller shut down the generator
because the digital input for Low Oil
Level Shutdown (PIM) was activated
(low).
Warning The digital input for Low Oil Level
Warning (PIM) is active (low).
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.
Warning When the generator set is not running
and controller is in OFF or AUTO, the
low oil pressure switch is not working
properly.
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.
Warning The controller has lost communication
with an RBUS device that had
previously been communicating
properly.
Shutdown The controller shut down the generator
because the speed signal was lost.
Shutdown The controller shut down the generator
[
because the voltage measured from
Phase A to Phase B exceeded the high
limit for a time greater than the delay
setting 2 seconds.
Shutdown The controller shut down the generator
[
because the voltage measured from
Phase A to Phase B was greater 5% of
rated, but less than the low voltage
setting for a time greater than the delay
setting 10 seconds.
On 20RESB/C/CL/D, cause may be a
tripped thermostat.
]
Check
Check RBUS wiring to
inoperative option board.
Check RBUS wiring to
inoperative option board.
Check RBUS wiring to
inoperative option board.
Check customer equipment
connected to the PIM module.
Check customer equipment
connected to the PIM module.
Check for oil leaks.
Check the oil level and add oil
if low.
Check the oil pressure
sensor; see Engine Service
Manuals.
Check the oil pressure switch
connection. Replace the LOP
switch if necessary.
See Section 6.10.2.
Check fuel supply. Check
cranking circuit. Check
cranking battery.
Troubleshoot engine; see
Engine Service Manuals.
Check connection to the
RBUS device
]
Check leads 55, 66, F+, and
F-- between the alternator and
the controller. This fault also
occurs if the engine stalls;
check the engine and see the
troubleshooting chart in
Section 5.13.
Troubleshoot alternator. See
Section 5.13, Troubleshooting
Charts, and Section 6,
Component Testing and
Adjustment.
Troubleshoot alternator. See
Section 5.13, Troubleshooting
Charts, and Section 6,
Component Testing and
Adjustment.
Check for evidence of high
temperatures inside the
enclosure. Reset the
thermostat.
TP-6805 8/15