(1) The following faults occur during the operation of the diesel generator:
The start-stop switch trips, the unit shuts down and the instrument panel triggers an alarm. If no tripping occurs, press the Emergency Stop button immediately for an emergency shutdown.
Fault Causes:
Overspeed
High cooling water temperature
Failure to start
Low lube oil pressure
(2) Troubleshooting Procedures
Check the fault indicator lights on the local instrument panel to identify the root cause of the fault.
Locate the fault cause and notify maintenance personnel for repair. After the fault is rectified and the alarm on the instrument panel resets, press the Trip Reset Button and Master Reset Button, then restart the unit.
(3) The local instrument panel will activate an alarm when the diesel generator encounters the following faults:
Fault Causes:
Overcurrent, earth fault
Shutdown due to low lube oil pressure, low oil pressure alarm
Shutdown due to high cooling water temperature, high water temperature alarm
Start failure
Reverse power tripping, reverse power shutdown
Common alarm, common pre-alarm
Circuit breaker closing / opening status
Overspeed shutdown
Low fuel level
(4) Troubleshooting Procedures
Carry out troubleshooting according to the fault information indicated by the fault indicator lights.
Reset the fault signal after the fault is eliminated.
(5) Failure of Diesel Generator to Start
Fault Causes:
Blocked air intake passage
Insufficient fuel supply or poor fuel quality
Malfunction of fuel supply and injection systems
(6) Troubleshooting Procedures
Observe exhaust smoke color and volume to analyze fuel combustion condition.
Check the fuel tank level.
Inspect and drain water from the fuel system.
Check whether foreign objects block the air inlet.
Notify maintenance staff and report to the shift supervisor if the unit still fails to start after the above checks.
(7) Insufficient Unit Output Power
Fault Causes:
Insufficient lube oil volume, low oil pressure, excessive oil viscosity, or clogged lubrication system
Inadequate fuel supply, such as clogged fuel system
Poor fuel quality (e.g., water contained in fuel)
Clogged fuel injectors or insufficient air intake
Troubleshooting Procedures
Observe exhaust smoke color.
Check lube oil volume, oil pressure and filter screen.
Inspect fuel quality.
Check the unit for other abnormalities such as burning odors or abnormal noises; notify maintenance personnel for repair if necessary.
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Post time: Jul-13-2026