Sicon EVMS Series, User Manual, Page: 31 / 32

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PART 8 Troubleshooting
Alarm Troubleshooting
Background communication
fault Check whether the background system is normal.
Insulation fault
Check whether between output and PE terminal are lack of
insulation.
Input over voltage
Check whether three phase input voltage of input breaker is
normal.
Input under voltage
Check whether three phase input voltage of input breaker is
normal.
Input phase loss Check whether input power wire is normal.
Output short-circuit Check whether output is short circuit.
Single cell over voltage Check whether the battery in ev is normal.
Single cell over temperature Check whether the battery in ev is normal.
BMS fault
Check whether BMS is normal. Replug connector to eliminate the
alarm.
Emergency button fault Check whether the emergency button is pressed.
Power grid frequency fault Check whether the power grid frequency is normal.
Card reader communication
fault
Please contact the supplier.
Touch screen communication
fault
Meter communication fault
BMS fault
Module communication fault
Temperature fault
Memory fault
PFC bus over voltage
PFC bus under voltage
DC/DC fault
Module Temperature fault
DC contactor fault
Input over current
Output over voltage
Output under voltage
Output over current
Output circuit open