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Copyright 2017 Cummins Inc.
4. Troubleshooting
GENERAL
The PowerCommand Control continuously moni-
tors engine sensors for abnormal conditions, such
as low oil pressure and high coolant temperature. If
any of these conditions occur, the PCC will light a
yellow Warning lamp or a red Shutdown lamp and
display a message on the digital display panel.
In the event of a shutdown fault (red Shutdown
lamp), the PCC will stop the engine and close a set
of contacts that can be wired to trip a circuit breaker.
If the generator set is stopped for this reason, the
operator can restart the generator set after making
adjustments or corrections.
This section contains the following information:
Table 4-1: Contains a list of all status codes, in-
cluding the displayed message and status indi-
cator. Also references the page number that
contains a description of each code.
Table 4-2: Describes each warning and shut-
down code, warning and shutdown limits
where applicable, and basic corrective actions,
such as, checking fluid levels, control reset
functions, battery connections, etc.
Table 4-3: Lists the PCC oil pressure warning
and shutdown limits.
Tables 4-4 through 4-30: Provide detailed
troubleshooting procedures.
Table 4-31: Describes the analog circuit board
inputs and outputs.
Table 4-32: Describes the location and func-
tion of each fuse.
SAFETY CONSIDERATIONS
High voltages are present when the generator set is
running. Do not open the alternator output box
while the generator set is running.
WARNING
Contacting high voltage compo-
nents can cause electrocution, resulting in se-
vere personal injury or death. Keep the output
box covers in place during troubleshooting.
When troubleshooting a generator set that is shut
down, make certain the generator set cannot be ac-
cidentally restarted. Place the Run/Off/Auto switch
in the Off position. Turn off or remove AC power
from the battery charger, MAKE CERTAIN EXPLO-
SIVE BATTERY GASSES ARE DISPELLED
FROM BATTERY COMPARTMENT, and then re-
move the negative (−) battery cable from the gener-
ator set starting battery.
WARNING
Accidental starting of the generator
set during troubleshooting can cause severe
personal injury or death. Disable the generator
set (see above) before troubleshooting.
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