Kohler 8/10/12RESVL manual Faults, Shutdowns, ATS Communication Errors

2.5 Faults

The RDC2/DC2 controller displays fault messages for generator set warnings and shutdowns. Selected fault messages are shown in Figure 2-3.

2.5.1Warnings

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.

2.5.2Shutdowns

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 Figure 2-3.

Shutdown switches (such as the low oil pressure switch 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 Section 2.5.4 for instructions to reset the controller after a fault shutdown.

2.5.3ATS 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.

2.5.4Resetting 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 2-3 to identify and correct the fault condition before proceeding. Contact an authorized distributor/dealer for service, if necessary.

RDC2 Controller

Press the OFF button to reset the controller, or follow the procedure below. See Figure 2-2.

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 Down 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.

DC2 Controller

Press the OFF button to clear the fault message on the controller.

Fault Message	Overview ---->	Fault Message	Confirm Clear
	1.2 h		Fault: NO
		Press Up arrow button.
			Confirm Clear
			Fault: YES
			tp6809

Figure 2-2Clearing a Fault on the RDC2 Controller

24 Section 2 Generator Set Operation TP-6880 10/14