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Alpha ESS Co., Ltd.
Page 62 of 69
Your Smart Energy
10.2.3
Battery Error Description
LED Indictor
Error Code
LED dis-
play
Description
Troubleshooting
Red LEDs flash
once every 3S.
Error 01
Temperature
sensor failure
Please restart the battery.
If the problem is not resolved,
please call for service.
Error 05
MOSFET error
Error 06
Circuit breaker
open
Switch on circuit breaker after
powering off the battery.
Error 08
LMU disconnect
(slave)
Reconnect the BMS
communication cable.
Error 09
SN missing
Call for service.
Error 10
LMU disconnect
(master)
Reconnect the BMS
communication cable.
Error 11
Software version
inconsistent
Call for service.
Error 12
Multi master
After shutting down the
battery system, please restart all bat-
teries within 30s.
Error 13
MOS
over
tempera-
ture
Please power off the battery
and turn on the battery after
about 2 hours.
NOTE:
In the case of work mode, if the protection code 09 appears, please press the power
button 5 times within 10 seconds, the BMS will be forced to turn on the MOSFET of
discharge so that the inverter can detect the battery open voltage and charge the bat-
tery.