Exide Technologies Section 94.30 - Manual (Page 49)

SERVICING THE AT10.1
45
3.2. INTERPRETING FRONT PANEL ERROR MESSAGES
If the AT10.1 control circuit detects hardware or wiring problems, it may
display an error code on the front panel. To solve an error code problem,
refer to the table below, which lists the error codes and procedures to use.
WARNING
High voltages appear at several points inside the AT10.1. Use extreme
caution when working inside the unit. Do not attempt to work inside the
AT10.1 unless you are a qualified technician or electrician.
Disconnect and lock out all power from the AT10.1 before starting to
remove or replace any components. Turn the ac power off at the
distribution panel upstream from the charger. Disconnect the battery
from the AT10.1 output terminals TB1(+/-).
Error
Code
Meaning Repair Procedure
E 01 resistor R2
open or
defective Resistor R2 is installed at the back of the front panel in the Gate
Driver pc board (A11) input connector (J18). R2 is measured by the
control circuit on startup, and is used to determine some of the
AT10.1's parameters, such as the float voltage.
If the AT10.1 finds that R2 is defective, it must be replaced. See
Section 3.6 for parts ordering information. When you have completed
the repair, restart the AT10.1 according to Section 2.1.
E 02 short circuit on
dc output You may get this error code if the battery is discharged to less than 6
volts. When the battery charges to greater than 6 volts, the error
code disappears. If you have a seriously discharged battery, allow
the AT10.1 to run for 24 hours and check the battery voltage again. If
it has not increased to the normal voltage rating, consult the battery
manufacturer for help.
If the battery voltage is normal, then check the wiring at the dc output
terminals for a short circuit.
If the battery voltage is normal and all external wiring is OK, check the
dc breaker on the AT10.1. If it is tripped, try once to reset it. If it trips
again immediately, there may be an internal short circuit in the
AT10.1. Check the internal wiring. If the AT10.1 is filtered, check the
dc filter capacitors and the polarity diode.
The AT10.1 normally recovers automatically from an E 02 condition.
If you have shut down the AT10.1 for service, restart it according to
Section 2.1.
E 03 High DC
Voltage
Shutdown
activated To restart the AT10.1, turn the ac breaker off, then on. Check the
Equalize voltage and High DC Voltage alarm settings. The alarm
setting must be higher than the Equalize voltage setting.
If you get another High DC Voltage shutdown after a few minutes of
operation, there may be an internal component failure. See
Charger
output not controllable of the troubleshooting chart in Section 3.4.