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SERVICING THE AT10.1
46
Error
Code
Meaning Repair Procedure
E 04
Internal mem
ory
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 AT10.1 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 AT10.1.
E 06
R4 or R14 is
defective, or
remote sense
wiring failed
Locate R4 mounted on TB5, on the back of the front panel. Remove
the resistor and measure its value with an Ohmmeter (see table 3-1
for the correct value). If the resistor is not within 1% of the specified
value, it must be replaced.
Locate R14 inside the enclosure, connected to TB1(-). Remove the
lugged end and measure the resistor's value with an Ohmmeter (see
table 3-1 for the correct value). If the resistor is not within 1% of the
specified value, it must be replaced.
If you are using remote sense wiring from the battery to the AT10.1,
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 AT10.1 charger displays the error code if it detects this wiring
failure. You should respond to this problem quickly to be sure that the
AT10.1 regulates the output voltage properly. Wire an annunciator
(buzzer, e.g.) 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 AT10.1 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
section 3.4 for help in locating the problem.