LINE AS-FUEL INJECTION 1917944 - Caterpillar

AL Fault Codes are shown as AL1 through AL18 on the upper display. Fault codes AL1 through AL15 apply to all generator sets. The fault codes include specific engine fault conditions. An example of an engine fault condition is the low engine oil pressure fault. The fault codes also include protective relaying functions. The underfrequency fault is an example of the protective relaying function. The fault codesAL16 through AL18 only apply to paralleling applications. AL Fault Codes rely upon certain setpoints. See Systems Operation, "Service Mode" for more information on setpoints. AL Fault Codes are not stored in the fault log of the GSC+. Many of the AL Fault Codes are programmable as a fault alarm or as a shutdown fault. In order to show the severity of the fault, the AL Fault Codes are accompanied by a fault alarm indicator. Also, the fault shutdown indicator on the GSC+ can accompany an AL Fault Code. The AL Fault Codes and the related setpoints are described in the paragraphs that follow.AL1 High Water Temperature Alarm - A high water temperature shutdown is issued by the GSC+ when the engine coolant temperature increases to about 6°C (11°F) from setpoint P015. The fault alarm indicator will FLASH. The AL1 fault code is shown on the upper display after the "Alarm Fault Codes" key is pressed.P015 is the setpoint for a high water temperature shutdown. This setpoint sets the coolant level temperature. The GSC+ uses the temperature in order to declare that a shutdown fault due to high water temperature is present. When the setpoint is reached, the dedicated shutdown indicator for high water temperature FLASHES and the engine is shutdown.AL2 Low Water Temperature Alarm - When the engine coolant temperature decreases to setpoint P016, the GSC+ issues a low water temperature alarm. Setpoint P016 is the setpoint for the low water temperature alarm. The fault alarm indicator will FLASH and the AL2 fault code is shown on the upper display after the "Alarm Codes" key is pressed.P016 is the setpoint for the low water temperature alarm. By displaying P016, the GSC+ indicates a low water temperature alarm fault.AL3 Alarm for Low Engine Oil Pressure - When the engine oil pressure decreases to within 34 kPa (5 psi) of Setpoint P013 or P014, the GSC+ issues an alarm for the low engine oil pressure. The fault alarm indicator will FLASH and the "AL3" fault code is shown on the upper display after the "Alarm Codes" key is pressed.P013 is the setpoint for