HGM6100NC-RM Remote Monitoring Module User Manual Page 14 of 14
8
TROUBLESHOOTING
Table 5 Troubleshooting
Symptom
Measures
Controller no response with power
Check starter battery;
Check controller wire connections;
Check DC fuse.
Abnormal communication of controller
Check whether RS485 A and B are connected reversely;
Adding 120Ω resistance is recommended between
RS485 A and B.
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