Fault Finding - Smartgen HGM9510N User Manual

23 FAULT FINDING

Symptoms
Controller no response
power
Genset shutdown
Controller emergency stop
Low oil pressure alarm after
crank disconnect
High water temperature alarm
after crank disconnect
Shutdown alarm in running
Crank disconnect failure
Starter no response
Genset is running while ATS no
action
RS485 communication abnormal
ECU communication failure
ECU alarm
HGM9510N/HGM9530N Paralleled Genset Controller User Manual
Table 49 Fault Finding
with Check starting batteries;
Check controller connection wirings; Check DC fuse.
Check the water/cylinder temperature is too high or not;
Check the AC generator voltage; Check DC fuse.
Check emergence stop button is correct or not;
Check whether the starting battery positive is connected with the
emergency stop input;
Check whether there is open circuit.
Check the oil pressure sensor and its connections.
Check the water temperature sensor and its connections.
Check related switch and its connections according to the
information on LCD;
Check digital inputs.
Check fuel circuit and its connections;
Check starting batteries;
Check speed sensor and its connections;
Refer to engine manual.
Check starter connections;
Check starting batteries.
Check ATS;
Check the connections between ATS and controllers.
Check connections;
Check settings of COM port is correct or not;
Check RS485's A and B connections is reversely connected or not;
Check RS485 conversion module is damaged or not;
Check communication port of PC is damaged or not.
Check the polarity of CAN high and CAN low;
Check 120Ω terminal resistor is correctly connected or not;
Check engine type is correctly chosen or not;
Check communication port of PC is damaged or not.
Get information from LCD alarm page;
If there is detailed alarm information, check the engine according
to the description. If not, please refer to engine manual according
to SPN alarm code.
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Possible Solutions
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