Fault Finding - Smartgen HGM4100LT User Manual

14 FAULT FINDING

Symptoms
Controller no response with power
Genset shutdown
Low oil pressure alarm after crank
disconnection
High water temp. alarm after crank
disconnect
Shutdown Alarm in running
Crank failure
None response for starter
Genset running but none ATS
transfer
Abnormal RS485 communication
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HGM4100LT Genset Controller
HGM4100LT GENSET CONTROLLER USER MANUAL
Table 42 Fault and Solutions
Check start batteries;
Check controller connection wirings;
Check DC fuse;
Check whether water/cylinder temperature is too high or not;
Check AC genset voltage;
Check DC fuse;
Check the oil pressure sensor and its connections;
Check the temperature sensor and its connections;
Check related switch and its connections according to the
information on LCD;
Check programmable inputs;
Check fuel oil circuit and its connections;
Check start batteries;
Check speed sensor and its connections;
Refer to engine manual;
Check starter connections;
Check start batteries;
Check ATS;
Check the connection wirings between ATS and controllers;
Check connections wirings;
Check whether COM port setting is correct or not;
Check RS485's connections between A and B is reversely
connected or not;
Check communication port on PC is damaged or not;
It is suggested to add 120Ω resistor between RS485 A and B.
2019-01-28
Possible Solutions
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