20
Charge current is too low.
High ambient temperature.
Try to lower the ambient
temperature around the
charger.
Charger is operating in the
absorption charging stage.
Do nothing. The battery is
almost fully charged and
consumes less current by
itself.
Charge voltage is too low.
The charge voltage is being
compensated by the battery
temperature sensor to
protect the battery.
Do nothing or try to cool
down the ambient
temperature around the
battery.
Wrong battery type selected,
or custom charge program
needs to be re-adjusted.
Select the correct battery
type or adjust the custom
charge program using TBS
Dashboard.
DC cables too thin.
Install larger DC cables. See
the DC cable size table in
chapter 2.4.
Battery load current is higher
than the charger’s output
current.
Reduce or remove the
battery load.
LED ‘charger on’ is blinking
red once per second (battery
error).
Battery voltage is too low.
(must be > 6V @12V and
>12V @24V systems)
Battery is damaged, replace
it. Or battery has been
discharged too extremely.
Battery voltage is too high.
(> 15% of set charge
voltage).
Check the DC system for an
external source that pushes
the battery voltage too high.
Battery temperature is too
high or too low. (only
available when temperature
sensor is installed)
Make sure that the battery is
located in a better
environment to charge
batteries.
LED ‘charger on’ is blinking
red twice per second (AC
error).
AC input voltage is too high
or too low.
Please make sure that the AC
input voltage is within the
operating range of the
charger.
LED ‘charger on’ is blinking
red three times per second
(high charger temperature
error).
Airflow around the charger is
obstructed.
Make sure there is at least 10
centimeters of clearance
around the charger. Remove
any items placed on or over
the charger. Keep the
charger away from direct
sunlight or heat producing
equipment.
