Battery Charger Troubleshooting
975-0240-01-01
4–9
Charger amperage drops
off before full charging
has finished (no Fault
LED).
AC frequency at the AC input terminal
may be out-of-tolerance (too high or low)
or the AC voltage may be outside the Hi
AC Volt or Lo AC Volt settings.
The charge settings are incorrectly
configured for your battery type.
Ambient temperature may be high,
causing unit to overheat and ramp down
the charging.
Check the settings on the AC Settings
menu. Check for the correct AC voltage or
frequency at the AC input terminal. If the
AC source is a generator, adjust the AC
voltage or frequency accordingly.
Increase the difference between the Hi AC
Volt (AC1) and Lo AC Volt (AC1) settings
to allow synchronization.
Select the correct battery type or configure
a Custom Battery type.
Cool the unit down or check for anything
preventing air flow around the unit.
Charger stops before full
charging (or
equalization) has
finished.
Fault LED flashes and
AC output drops
momentarily.
Cold temperature around batteries with
battery temperature sensor (BTS) installed
may be causing unit to reach High Batt
Cut Out setting.
Disconnect BTS during charging or
increase High Batt Cut Out setting.
Charger output is low.
Loose or corroded battery connections.
Loose AC input connections.
Worn-out batteries.
Battery cables too small or too long.
Check and clean all connections.
Check and tighten AC wiring connections.
Replace batteries.
Refer to cable and battery
recommendations in Installation Guide.
Batteries being charged
above the Bulk/Float
setting.
If BTS is installed, it may be in a cold area
or have fallen off the batteries.
Another DC charging source may be on
the batteries.
Inspect the BTS. Reduce the Batt Temp
Comp setting on the Custom Battery
Settings menu.
NOTE: To bring batteries that are cold to
the correct state of charge may require
charging at a higher voltage. This may be
normal BTS operation. Unplug the BTS
and determine if your voltage returns to the
bulk/float voltage.
Problem
Possible Cause
Solution
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