TP-6398 4/07 15Section 2 Operation
2.4 Faults
The DC 2200 controller displays the fault warning and
shutdown codes shown in Figure 2-3.
2.4.1 Shutdowns
If a shutdown code is displayed, the generator set has
shut down automatically under the fault conditions listed
in Figure 2-3. The generator set cannot be restarted
until the fault condition is corrected and the controller is
reset. See Section 2.4.3 to reset the controller after a
fault shutdown. The controller resets automatically after
a battery voltage fault condition is corrected.
The shutdown switches on the generator set
automatically reset when the problem is corrected. The
high engine temperature switch automatically resets
when the generator set cools. However, the fault does
not clear until the controller is reset.
2.4.2 Warning
The controller displays warning code LB but the
generator set does not shut down when the engine
starting battery voltage is low as described in
Figure 2-3.
Code Fault Description Check
HE High engine
temperature
shutdown
Shutdown occurs if the engine coolant temperature exceeds
the maximum temperature for more than 5 seconds. This
protective becomes active after the engine reaches the crank
disconnect speed.
Check for blocked air inlets and exhaust
outlets.
LB Low battery
voltage warning
Fault code is displayed if the engine starting battery voltage
falls below 8 VDC for a 12 VDC system or below 16 VDC for a
24 VDC system for more than 10 seconds when the engine is
not running. This fault condition does not inhibit engine
starting.
The fault condition clears when the battery voltage returns to a
voltage within the limits for more than 10 seconds.
Check the battery rating and condition.
Check the battery charger operation.
Charge or replace the battery.
LOP Low oil pressure
shutdown
Shutdown occurs if a low oil pressure condition exists for more
than 5 seconds. This protective becomes active 30 seconds
after the engine has reached crank disconnect speed
(30 second inhibit).
Note: The low oil pressure shutdown does not protect against
low oil level. Check the oil level at the engine.
Check for leaks in the lubrication system.
Check the oil level and add oil if the level
is low.
OC Overcrank
shutdown
Shutdown occurs after 3 unsuccessful starting attempts. The
crank cycle is set for three starting attempts of 15 seconds
cranking and 15 seconds rest.
The generator set also shuts down if no engine rotation is
sensed during cranking. Shuts down 1 second after the fault is
detected. *
Check the fuel supply, spark plug, and
battery .
Check for loose connections.
Contact an authorized distributor/dealer for
service if problem continues.
OS Overspeed
shutdown
Shutdown occurs if the engine speed exceeds 115% of the
normal running speed for more than 0.3 seconds.
Contact an authorized distributor/dealer for
service if problem continues.
OU * Overvoltage
shutdown
Shutdown occurs if the voltage exceeds 120% of the system
nominal voltage for more than 2 seconds.
Contact an authorized distributor/dealer for
service.
UF Underfrequency
shutdown
Shutdown occurs when the governed frequency falls blow 90%
of the nominal system frequency for more than 5 seconds.
This protective becomes active 10 seconds after engine start.
(10 second inhibit).
Reduce the load and restart the generator
set.
Contact an authorized distributor/dealer for
service if problem continues.
UU * Undervoltage
shutdown
Shutdown occurs if the voltage falls below 80% of the nominal
system voltage for more than 10 seconds.
Reduce the load and restart the generator
set.
Contact an authorized distributor/dealer for
service if problem continues.
SCF0 Software
Communication
Fault 0
Indicates a software or communication problem within the ADC
2100
Replace the controller. Contact an
authorized distributor/dealer for service.
* Controller software version 1.26 or higher. Software version number is displayed on controller powerup.
Figure 2-3 DC 2200 Fault Codes
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