Error Code
12
The positive and negative
connections of the battery
are reversed.
Error code
Cause of failure
Normal.
Battery voltage is too low.
Battery voltage has exceeded
the controller limit.
The controller is below the
limit temperature
(-20°C/-4°F).
The output current of the
solar panel exceeds the
rated current of the
controller.
The input voltage of the
solar panel exceeds 55V.
The positive and negative
connections of the solar
panel are reversed.
The controller exceeds
operating temperature
limit(80°C/176°F).
Disconnect and reconnect
with correct wire polarity.
Solution
/
Check if the system voltage is
set correctly or turn off the
load and continue charging
until the battery voltage
reaches the recovery voltage.
Check if the system voltage is
set correctly.
Place the controller in a
suitable temperature
environment.
Reduce the power of the solar
panel system.
Reduce the voltage of the
solar panel system and the
voltage is lower than 55V to
recover.
Disconnect and reconnect
with correct wire polarity.
Ensure the controller is placed
in a well-ventilated cool, dry
environment.
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