Shenzhen BYD Electronic Co., LTD
11 Troubleshooting
41
HVS&HVM Operating Manual
11.2.
LED Light Designation for Errors
Blue LED is flashing once
DC cable connection incorrect
Blue LED is flashing twice
a precharge transistor or relay failure
Blue LED is flashing three times
BIC (battery information collector) communication
failed
Blue LED is flashing four times
Battery sensor failure
Blue LED is flashing five times
BCU voltage sensor faulty
Blue LED is flashing six times
Current sensor failure
Blue LED is flashing seven times
Cell data abnormal
Blue LED is flashing eight times
Precharge failed
Blue LED is flashing nine times
BIC balancing failed
Blue LED is flashing ten times
Reserved
Blue LED is flashing eleven times
BMS and BMU communication failure
NOTICE
Damage to the
battery
system due to
under voltages
•
If the
battery
system doesn
`
t start at all, please contact BYD local after-sales service
w
ithin
48
hours.
O
ther
w
ise, the battery could be permanently damaged.
11.
Troubleshooting
Please also see the
BYD
Battery-Box Premium HVS/HVM Service Guideline and Checklist for
troubleshooting. The latest version is available at our website www.bydbatterybox.com.
11.1.
Battery System
Behavior
under Fault Conditions
Blue light flashing
If blue LED flashes, and the interval time between two flashes is 1 second, which means an
error happened.
(When the system is
initiating, the white light and blue light flash alternatively
every 0.5s. That is not an error.)
The detailed designation
for errors
could be read in 11.2.
Please note that if the communication with the inverter is not established, the blue light may
flash three or eleven times. So when it happens, check the communication with the inverter
first.
Except the LED light,
you
can also get the faulty messages of the battery
through
Be Connect
2.0
and
BCP. BYD service can
also
read them
through the remote server Be
Connect
Monitoring.
Summary of Contents for HVM 11.0
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