SBS AT10.1 SERIES, Operating And Service Instructions

Page: 53 / 104

SERVICING THE AT10.1
47
Error
Code
Meaning Repair Procedure
E 08
defective
temperature
compensation
probe
(continued)
Disconnect the wiring at the probe and measure the resistance across the
quick-connect leads with an Ohmmeter. The resistance should measure
approximately 10,000
Ω
at normal room temperature (77 °F / 25 °C). If the
probe reads open or shorted, it needs to be replaced.
If the probe is satisfactory, examine the wiring between the probe and the
AT10.1. Also, check the connection of the cable to TB8 on the Main Control
PC Board (A1) on the back of the front panel. If the wiring is satisfactory, the
probe needs to be replaced. Once you have replaced the probe, you must
restart the AT10.1 to activate temperature compensation.
E 09
misadjusted
Current Limit
This code has been discontinued with Main Ctrl PCB firmware version
6.52. See
Application Note ( JD5035-00 ) for a description of this code.
E 10
open internal
feedback loop
A redundant internal feedback loop (control loop) is provided to increase
reliability when remote sensing is used. If there is a problem with the
internal loop wiring, the front panel meter will display
E 10 .
Check the internal wiring in the signal harness, especially wire # 50 . Also
check the harness connector (J18) on the Gate Driver PC Board (A11).
E 11
not used
This error code is not implemented at this time.
E 12
defective
internal
thermostat
The AT10.1 rectifier heat sinks have been equipped with non-standard over-
temperature thermostats (S2x). On startup, the AT10.1 tests the thermostats,
and displays
E 12 if one or more are defective.
Check each thermostat (S2x) for continuity. Disconnect the wiring and resistor
(R28x) from the quick-connect terminals. The thermostat switch should be
closed (NC) at normal room temperature.
E 13 internal over-
temperature
One or more of the rectifier thermostats (S2x) has detected an over-
temperature condition. If the rectifier is equipped with fans (B2x), check all
fans for proper operation. Also make sure that all enclosure vents are clear of
debris, and that the ambient temperature is below 122 °F / 50 °C.
E 14
forced load
sharing not
working
properly
See Appendix F on page 92.
Verify both AT10.1s are functioning properly. Ensure that the forced load
sharing interconnection cable assembly is not broken, is properly installed, and
that the connector for the Secondary charger has the jumper as described.
Ensure that both AT10.1s are connected to the same ac supply, and that
source phase rotation is the same for both AT10.1s.
E 15
battery open
The AT10.1 has detected an open battery, see Instructions ( JA5108-00 ).
A 01 manual eqlz
enabled for
more than 24 hr
If the AT10.1 was accidentally left in manual equalize mode, switch the
unit back to float, manual equalize timer, or auto-equalize timer mode,
according to Section 2.2.4 on Page 27.
A 02 equalize mode
inhibited
If you set the equalize timer to zero (0) hours, the equalize mode is
inhibited. When you try to put the AT10.1 into equalize mode from the
front panel controls, the meter displays status code
A 02 . If you want to
enable the equalize mode, set the equalize timer to one (1) or more hours.
A 04
voltmeter
calibration
inhibited
w/TempCo
active
While using temperature compensation, the AT10.1 internal dc voltmeter
cannot be calibrated. Disconnect one wire of the TempCo cable from TB8
on A1. Restart the AT10.1 and perform the voltmeter calibration according
to Section 2.3.7 on Page 37. Reconnect the TempCo cable to TB8, and
restart the AT10.1. See
Application Note ( JD5003-00 ) for further details.
A 05 dc output at
Current Limit
setting
The AT10.1 is in Current Limit mode. This will occur when there is a large
load on the dc bus, or the battery has discharged. Make sure that the
AT10.1 is sized correctly for the application, and that the Current Limit
value has been set correctly. See Section 2.3.5 on Page 35.