HGM6100LT Series Genset Controller User Manual                                                                  Page 50 of 50 
14  FAULT FINDING   
Table 42 – Fault Finding 
Controller No Response with Power 
Check starting battery; 
Check connections of controller;   
Check the DC fuse. 
Check if water/cylinder temperature too high;   
Check alternator voltage; 
Check the DC fuse. 
Controller Emergency Stop 
Check  if  an  emergency  stop  button  is  fitted;  Ensure  battery 
positive is connected to the emergency stop input; 
Check if connection is open circuit. 
Low Oil Pressure Alarm (After Crank 
Disconnect) 
Check oil pressure sensor and connections.   
High  Water  Temp.  Alarm  (After 
Crank Disconnect) 
Check water temperature sensor and connections.   
Shutdown Alarm During Running 
Check switch and connections according to information on LCD. 
Check configurable inputs. 
Check connections of fuel solenoid; 
Check starting battery; 
Check speed sensor and its connections;   
Refer to engine manual. 
Check connections of starter; 
Check starting battery. 
Genset  Running  while  ATS  Not 
Transfer 
Check ATS; 
Check connections between ATS and controller. 
Check connections;   
Check if COM port is correct; 
Check if A and B of RS485 is connected reversely; 
Check if PC COM port is damaged; 
120Ω resistance between RS485’s A and B is recommended. 
ECU Communication Failure 
Check polarity connections between CAN_H and CAN_L; 
Check engine type settings; 
Check connections between controller and engine. 
EHERNET Interface Cannot Connect 
Cloud Platform 
Check cloud server’s domain name and port number; 
Check controller’s IP and DNS address. 
 
 
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