Harrington Generators International
31
HRD Diesel Generator
498-1052
Fault Finding
Fault Finding
IMPORTANT:
If the following checks and investigations can be completed without the use of tools then the operator can
safely undertake them. If tools are needed then ONLY trained technicians can undertake the work safely. Wiring
diagrams can be obtained from HGI to help with electrical fault
fi
nding.
Engine Fails to Start
Symptom
Cause and Remedy
Starter motor did not attempt to
turn the engine over and no fault
icons are displayed on the engine
module.
•
Battery Isolator is OFF
•
Check the emergency stop button is not pressed IN.
•
Check the control fuse or MCB has not failed.
•
Flat battery or wrong polarity from battery.
•
Check that the battery is producing over 12V DC from the positive
terminal relative to the chassis of the generator.
•
Check the connections to the control module.
•
Check the operation of the slave relay, module and its fuses.
•
Check the connections to the starter motor.
•
Check the operation of the starter motor by making a temporary
connection to its solenoid.
Starter motor did not attempt to
turn the engine over and the oil
pressure icon is displayed on the
Engine module.
•
The control module believes that oil pressure is present when the
engine is off.
•
Check the oil pressure switch has not gone faulty.
•
Check the control module has not gone faulty by swapping it.
•
Check fuel level in the tank(s) and that the fuel selector switch is set
to the correct tank i.e. internal or external.
Engine turns over but will not
start.
No smoke seen from exhaust
pipe.
•
Check that the fuel
fi
lter is not blocked or full of water.
•
Check there is a 12V DC supply to the fuel solenoid valve.
• Check
*
fuel is getting past the fuel solenoid valve.
• Check
*
fuel is
fl
owing at high pressure out of the fuel pump located
next to the fuel solenoid.
•
Suspect the fuel system is air locked or there is contamination
blocking the fuel system or injector.
Engine turns over but will not
start.after 3 attempts to start).
“Start Fail” will be displayed on
control module
Smoke seen from exhaust pipe.
•
Suspect faulty fuel supply as above.
•
Suspect faulty fuel injector nozzle.
•
Suspect contaminated / unsuitable fuel.
•
Suspect starter motor is not turning engine over quickly enough
particularly if the temperature is too low.
•
Suspect serious fault with the engine.
* Care should be taken while working on the fuel system particularly when fuel is under high pressure.
