TANK & MTG GP-HYDRAULIC 4172166 - Caterpillar

Fault Indicators
The eight fault indicators (1-8), located on the front of the GSC, are used to show and describe a fault that is present. The first seven are red fault shutdown indicators, and the eighth is a yellow fault alarm indicator.* The yellow FAULT ALARM indicator (8) flashes when the GSC detects a fault that is an alarm condition. The engine continues to run and start. The FAULT ALARM indicator is accompanied by an alarm fault code, shown on the upper display (9) when the alarm codes key (10) is pressed. Refer to SENR5809, Electronic Modular Control Panel II, for fault code descriptions, or refer to the decal on the distribution panel.* The red FAULT SHUTDOWN indicator (7) flashes when the GSC detects a fault that is a shutdown condition. The engine is shutdown if it is running and is not allowed to start. The FAULT SHUTDOWN indicator is accompanied by a diagnostic fault code that is immediately shown on upper display (9). Refer to SENR5809, Electronic Modular Control Panel II, for fault code descriptions, or refer to the decal on the vandal door.* Six red shutdown indicators are dedicated to the following shutdown conditions: low oil pressure (1), emergency stop (2), high water temperature (3), engine overspeed (4), low coolant level (5), and engine over crank (6). When the GSC detects a fault in one of these conditions, the dedicated shutdown indicator (corresponding to the fault) flashes. The engine shuts down if it is running, and is not allowed to start. There are no fault codes associated with the dedicated shutdown indicators because each indicator has an interpretive label. The conditions required for each dedicated fault and the results of each dedicated fault are as follows: LOW OIL PRESSURE (1) - There are two low oil pressure set points. One set point is for when the engine is operating at idle speed. The other set point is for when the engine is operating at rated speed. The low oil pressure shutdown set points are programmed into the GSC. Condition: the engine oil pressure drops below the set points for low oil pressure shutdown. Result: the LOW OIL PRESSURE indicator flashes, the engine is shutdown and is not allowed to start. EMERGENCY STOP (2) - Condition: the operator presses the emergency stop pushbutton (ESPB) on the instrument panel. Result: the EMERGENCY STOP indicator flashes, the engine is shutdown and is not allowed to start. HIGH WATER TEMPERATURE (3) - A high water temperature shutdown set point is programmed into the GSC. Condition: the engine coolant temperature rises above the set point for high water temperature shutdown. Result: the HIGH WATER TEMPERATURE indicator flashes, the engine is shutdown and is not allowed to start. ENGINE OVERSPEED (4) - An engine overspeed set point is programmed into the GSC. Condition: the engine speed exceeds the engine overspeed set point. Result: The ENGINE OVERSPEED indicator flashes, the engine is shutdown and is not allowed