TP-6805 8/1572 Section 5 Troubleshooting
Fault Message CheckDescription/ CommentsAction
Battery CRLow Warning [ Warning Battery voltage dropped to 11 VDC or
less for 30 seconds or more.
Check engine starting battery.
Check battery charger DC
output voltage from RDC2 on
lead CHO (P1-8) or lead P
(P1-1) to the battery.
Battery Low Warning [ Warning The controller has measured battery
voltage that is below the low warning
setting for 90 seconds or more.
The battery voltage is checked before
allowing an exercise to start.
Check engine starting battery.
Check battery charger DC
output voltage from RDC2 on
lead CHO (P1-8) or lead P
(P1--1) to the battery.
Chk DateTime Warning
(Check date and time warning)
Warning DC power to the controller has been
interrupted and the date and time may
not be correct. Event history may not
have accurate time/date stamps.
Verify the time and date
settings to ensure proper
operation of scheduled
operations and for event
history logging.
Default Pars Warning
(Default Parameters)
Warning The controller has been loaded with
default parameters.
Configure settings as required
for desired operation.
Emerg Stop Shutdwn Shutdown The optional emergency stop button
has been pressed or emergency stop
leads ESS and/or ESN are not
connected.
Reset the emergency stop
button and clear the fault as
described in Section 5.6.
Check lead ESS and ESN
connections to the emergency
stop button. If there is no
E-stop button, connect ESS
and ESN together.
Engine M/N Invalid Shutdwn Shutdown Generator model number has not been
entered. (Engine model number is
selected automatically based on
generator set model.)
Enter the generator set model
number from the RDC2
keypad, or use SiteTech to
select the genset model
number.
Engine Speed High Shutdwn Shutdown The controller shut down the generator
because engine speed, as calculated
from AC frequency, was above the high
speed setting for 0.3 seconds or more.
Troubleshoot engine
operation per the engine
service manual.
Engine Speed Low Shutdwn Shutdown The controller shut down the generator,
after crank disconnect, because engine
speed, as calculated from AC
frequency, was below the low speed
setting for 3 seconds or more.
On 20RESB/C/CL/D, the cause may be
a tripped thermostat.
Troubleshoot engine
operation per the engine
service manual.
Check for evidence of high
temperatures inside the
enclosure. Reset the
thermostat.
Exer Not Sch Warning Warning There is no exercise scheduled. Set the exercise schedule.
Frequency High Shutdwn Shutdown The controller shut down the generator
because the frequency measured on
Phase A exceeded the high frequency
setting for 10 seconds, 10 seconds or
more after crank disconnect.
Troubleshoot engine
operation per the engine
service manual.
Frequency Low Shutdwn [ Shutdown The controller shut down the generator
because the frequency measured on
Phase A was less than the low limit for
10 seconds or the measured frequency
was 10 Hz or more less than rated for
60 seconds or more, 10 seconds or
more after crank disconnect.
On 20RESB/C/CL/D, cause may be a
tripped thermostat.
Troubleshoot engine
operation per the engine
service manual.
Check for evidence of high
temperatures inside the
enclosure. Reset the
thermostat.
* 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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