Crescent CS7010 - Glow plug control

160Service Manual – CS7010™ 28 - Engine System, Diesel
Flash Code Fault Remedy
6 APECS unit failed Electrical noise may be entering the controller.
Checkwiring,shieldingandconnectionstocontroller.
Cyclepowertoengine.
Ifcontrollerstilldoesnotwork,consultfactory.
Glow plug control
The engine is equipped with glow plugs to assist starting a cold engine. The glow plugs have an internal
resistive element that increases in resistance as it heats up. This protects the glow plug from overheating by
reducing the current ow as it gets hot.
Whenever the key is turned on, the main machine controller tells the control panel to display the “glow plugs
on” icon and sends out 12 V from connector J3 pin number 32 to the glow plug relay winding. Since the other
side of the winding is connected to ground, this energizes relay which in turn supplies power from circuit
breaker 11 to the glow plugs. After approximately 10 seconds, the main machine controller de-energizes
the glow plug relay by removing the 12 volts from the winding which also removes the power from the glow
plugs.