Exide Technologies Section 94.40 - Manual (Page 50)

SERVICING THE AT30
46
Error
Code
Meaning Repair Procedure
E 04 Internal memory
failure Any parameters that you set, such as Float or Equalize voltage, are
saved internally. The internal memory is tested on startup. If the memory
test fails,
E 04 appears on the front panel display. The error may also
appear if the controller was trying to write to the memory while a power
failure occured.
If an
E 04 appears, try restarting the AT30 by turning the ac and dc
breakers off, then on. If the AT30 restarts normally, you must reenter any
changes you made to the factory settings (float voltage, etc.).
If
E 04 appears repeatedly, the internal memory has been damaged.
You must replace the control circuit board. See Section 3.6 for parts
ordering information.
E 05 Not used This error code was formerly used to indicate a reverse battery
connection. It is not available in the AT30.
E 06 R4 or R14 is
defective, or
remote sense
wiring failed Locate R4 and R14 on the Gate Driver pc board (A15), mounted on the
back of the front panel. Remove the wire harness plugs from J25 & J26,
and remove A15 from the main control board (A1). Use an Ohmmeter to
measure the values of R4 and R14 (see table 3-1 for the correct value).
If either resistor is not within 1% of the specified value, the entire Gate
Driver pc board (A15) must be replaced.
If you are using remote sense wiring from the battery to the AT30, the
wiring may have failed. The usual failure is an open circuit; a short circuit
will usually be indicated by smoke or fire in the wiring.
The AT30 displays the error code if it detects this wiring failure. You
should respond to this problem quickly to be sure that the AT30 regulates
the output voltage properly. Wire an annunciator (e.g. buzzer) to the
summary alarm relay contact (TB3) for remote indication of any charger
problem, or monitor the AT30 operation using the optional DNP-
3/MODBUS communications board.
If you have a failure in remote sense wiring, the AT30 regulates its output
voltage locally until you correct the problem, see Section 1.9. The locally
controlled voltage may not reflect the true requirements of the battery.
When you complete the repair, restart the AT30 per Section 2.1.
E 07 DC breaker
open, or internal
failure If the dc breaker is open, open the ac breaker, then reclose the dc and ac
breakers. If the dc breaker trips again, see the troubleshooting chart in
Section 3.4.
If the dc breaker is closed, but you have an
E 07 display, check your
battery. If the battery is disconnected, and you then disconnect the load,
the AT30 may display an
E 07 code. Restart the AT30 according to
Section 2.1.
If the battery and load are OK, see the troubleshooting chart in chart in
Section 3.4 for help in locating the problem.
E 08 Defective
temperature
compensation
probe If a temperature compensation probe is connected to the AT30, the
control circuit detects the probe on startup, and uses the temperature
measured by the probe to control the output voltage of the AT30. To
understand temperature compensation, see Section 1.11.
If the temperature compensation probe, or the wiring that connects it to
the AT30, fails during normal operation, the AT30 detects the failure, and
shows
E 08 on the front panel meter.
Disconnect the wiring from the probe, and measure the resistance of the
probe with an Ohmmeter. The resistance should be approximately
10,000 Ohms at normal room temperature (77° F / 25° C). If the probe
reads open or shorted, it needs to be replaced.