Full Product Manual

36 TP-7092 4/23
2.5 Faults
The RDC2 controller displays fault messages for generator set warnings and shutdowns. Selected fault messages are shown in
the Resetting the Controller After a Fault Shutdown section. Contact an authorized dealer for service, if necessary.
2.5.1 Warnings
The controller displays a fault message but the generator set does not shut down on a warning. The controller resets
automatically after a warning condition is corrected.
2.5.2 Shutdowns
Under a fault shutdown condition, the generator set shuts down automatically and the controller displays a fault message. The
OFF LED flashes. In some cases, the engine cooldown cycle runs before the engine shuts down. See the Resetting the
Controller After a Fault Shutdown section.
Shutdown switches (such as the low oil pressure switch or low oil level (26RCA/L only) or high engine temperature switch) on
the generator set will automatically reset when the problem is corrected. However, the fault condition at the controller does not
clear until the controller is reset.
The generator set cannot be restarted until the fault condition is corrected and the controller is reset. See the Resetting The
Controller after a Fault Shutdown section for instructions to reset the controller after a fault shutdown.
2.5.3 Shutdown During Exercise (Advanced Diagnostic)
If the generator set shuts down on a fault during an exercise, the controller will try to restart the engine. If the engine starts, the
generator set will run at full speed for two minutes and then stop. The event history will show Advanced Diagnostic Active. The
exercise schedule is maintained.
If the engine does not start, the shutdown message will be displayed. Correct the fault condition and reset the fault as described
in the Faults section.
2.5.4 ATS Communication Errors
When a Model RXT transfer switch is used, an ATS fault indicates that the connection to the interface board on the transfer
switch has been lost. Check the connection to the ATS interface board.
2.5.5 Resetting the Controller After a Fault Shutdown
Always identify and correct the cause of a fault shutdown before resetting the controller. Check the fault message displayed on
the controller and refer to Figure 25 to identify and correct the fault condition before proceeding. Contact an authorized dealer
for service, if necessary.
RDC2 Controller Reset Procedure
Press the OFF button to reset the controller, or follow the procedure below. See Figure 24.
1. While the fault message is displayed, press the Select button to go to the Overview menu.
2. Press Select again. The active fault message is displayed.
3. Press Select. Confirm Clear Fault: NO is displayed.
4. Press the UP arrow button. Confirm Clear Fault: YES is displayed.
5. Press the Select button to enter YES and clear the fault.
6. Press the Select button to return to the overview menu. The controller changes to OFF mode.
7. Press AUTO to put the generator set into automatic mode.