HGM93XX MPU(CAN) SERIES GENSET CONTROLLER
HGM93XX MPU(CAN) Series Genset Controller Version: 1.1 2016-11-03 Page 77 of 77
16 FAULT FINDING
Symptoms
Possible Solutions
Controller no response with
power.
Check starting batteries;
Check controller connection wirings;
Check DC fuse.
Genset shutdown
Check the water/cylinder temperature is too high or not;
Check the genset AC voltage;
Check DC fuse.
Controller emergency stop
Check emergence stop button is correct or not;
Check whether the starting battery positive is connected
with the emergency stop input;
Check whether the circuit is open.
Low oil pressure alarm after
crank disconnect
Check the oil pressure sensor and its connections.
High water temp. alarm after
crank disconnect
Check the temperature sensor and its connections.
Shutdown Alarm in running
Check related switch and its connections according to the
information on LCD;
Check auxiliary input ports.
Fail to start
Check fuel oil circuit and its connections;
Check starting batteries;
Check speed sensor and its connections;
Refer to engine manual.
Starter no response
Check starter connections;
Check starting batteries.
Genset running while ATS
not transfer
Check ATS;
Check the connections between ATS and controllers.
RS485 communication is
abnormal
Check connections;
Check COM port setting is correct or not;
Check RS485’s connections of A and B is reverse connect
or not;
Check RS485 transfer model whether damage or not;
Check communication port of PC whether damage or not.
ECU communication failed
Check connections of CAN high and low polarity;
Check if correctly connected of 120Ω r
esister;
Check if type of engine correct;
Check if connections from controller to engine and output
ports setting are correct.
ECU warning or shutdown
Get information from LCD of alarm page;
If there is detailed alarm, check engine according to
description. If not, please refer to engine manual according
to SPN alarm code.