25
Solution
Cause of failureError code
16 9
81
Battery low
temperature
charging
protection
Charging will be stopped when the
battery temperature is below -35°C
and resumed when it is above -30°C
Battery low
temperature
discharging
protection
Load output will be turned off when
the battery temperature is below -35°C
and resumed when it is above -30°C
16 9
81
Charging and
discharging
disabled by
system setting
System charging or discharging failure.
16 9
81
16 9
81
Overcharge
protection
Turn off charging, the battery voltage
is higher than the over-voltage voltage,
turn off charging, the battery voltage
drops, and recover after 10s.
16 9
81
Battery high
temperature
discharging
protection
Load output will be turned off when
the battery temperature is above 75°C
and recover when it is below 70°C.
Solar panel
over-voltage
Stop charging when the output
voltage of the solar panel is higher
than 95V, and recover charging when
the voltage is lower than 90V.
16 9
81
Battery high
temperature
charging
protection
Charging will be stopped when
the battery temperature is above 75°C
and resumed when it is below 70°C.
16 9
81
16 9
81
Lead acid battery
is not connected
In lead-acid battery mode, the battery
is damaged or not connected.
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