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 charger 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 circuit 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 circuit 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 charger 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 (TB3) to get a remote indication of any
charger problem, or monitor the charger 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 charger as described in
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 charger may display an
E 07
code. Restart the charger 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 charger. 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.
Summary of Contents for AT30 SERIES
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