Fault name Fault code
Battery system b
BMS internal communication failure
BMS internal MOS failure or relay failure
Charging monomer battery undervoltage fault level 1
Charging monomer battery undervoltage fault level 2
Charging monomer battery undervoltage fault level 3
Uneven temperature fault 1
Uneven temperature fault 2
Uneven temperature fault 3
Total charging voltage overvoltage fault
Total discharge voltage undervoltage fault
Total charging voltage undervoltage fault
Discharge monomer overvoltage fault
Charging monomer overvoltage protection
Power tube temperature failure
Charger C faulty
component
Short circuit protection 3
Open circuit protection 3
C306
Faulty component Fault name Fault code
Input overvoltage protection 1
Input overvoltage protection 2
Input overvoltage protection 3
Input undervoltage protection 1
Input undervoltage protection 2
Input undervoltage protection 3
Output overcurrent protection 1
Output overcurrent protection 2
Output overcurrent protection 3
Output overvoltage protection 1
Output overvoltage protection 2
Output overvoltage protection 3
Output undervoltage protection 1
Output undervoltage protection 2
Output undervoltage protection 3
C311
Fault code:
Bits 1, 3 and 4 of fault code: displayed according to the actual value
Bit 2 of fault code: no matter it is actually 1, 2 or 3, only 3 is displayed.
Fault prompt:
When the bit 2 of the fault code is 1, it flashes once (the flashing frequency is
1Hz, repeated after 3 seconds until it stops 5 seconds after the fault is
removed)
When the bit 2 of the fault code is 2, it flashes twice (the flashing frequency is
1Hz, repeated after 3 seconds until it stops 5 seconds after the fault is
removed)
When the bit 2 of the fault code is 3, it flashes for three times (the flashing
frequency is 1Hz, repeated after 3 seconds until it stops 5 seconds after the
fault is removed)
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