Webasto PosiCharge DVS Field Service Manual page 17

DVS/GSE
stopped because of a false reading of a high battery temperature, check the installation of
the BMID and the integrity of the thermistor, reinstall or replace as needed. If the
batteries are overheating, allow the batteries to cool down before charging again. (Note:
Use of ventilated battery packs and/or fans may be required in certain applications.
Contact Webasto Customer Service).
H)
If a cell within a pack is failing, or a failed module has been replaced with a new module,
there will be a state of charge (SOC) mismatch within the pack which will prevent the
pack from charging properly. Before running a fast charge, make sure you run a long
equalization on the pack to bring it back into balance. Failure to run equalization on a
serviced battery pack prior to fast charging may result in damage to the new module. If
the problem persists or grows worse, replace the battery pack.
I)
Choosing the charge algorithm is very important for the life and utility of the battery
pack. An algorithm that is not matched to the battery being charged will result in
undercharge, overcharge or excessive heating of the battery during charge. Use the
Charge Configuration menu to make sure the charge configuration is appropriate for your
battery and application. Use the BMID Configuration menu to check that the BMID
installed on the pack has the correct battery manufacturer type-code, the correct capacity
of the cells, and the correct number of cells.
J)
A battery that is connected at a state of charge (SOC) which is too low to be fast charged
safely will be charged at a low rate until it has recovered sufficiently to accept fast
charging. In this case, the user must press and hold the EQ button to force charging to
begin.
K)
If the battery voltage reported by the BMID goes below the minimum allowable volts per
cell or exceeds the maximum allowable volts per cell during a charge event the fault is
set. The minimum/maximum allowable volts/cell are based upon the battery type
selected in the BMID Configuration. Check the battery charge path for shorts or opens.
Check the battery for defective or damaged cells. If no problems are found replace the
BMID.
L)
This fault is usually the result of an unprogrammed BMID or an improperly programmed
BMID. Using the BMID Configuration menu verify that the BMID installed on the pack
has the correct battery manufacturer type-code, the correct capacity of the cells, and the
correct number of cells input.
M)
Refer to the Installation Instruction Manual for correct cable and connector sizing.
Check the crimp or solder joint between the cable and the connector pins to ensure good
electrical contact. Replace the connector if the case is damaged.
USE EXTREME CAUTION WHEN TROUBLESHOOTING the DVS WITH
ANY PANEL REMOVED. ELECTRIC SHOCK CAN KILL: Touching live
electrical parts can cause fatal shocks or severe burns. The input power circuitry and
internal circuits are live whenever input power is on.
DANGER
N) The equalization schedule is very important to the life of the batteries. If the batteries are
being equalized too infrequently, or the equalization is interrupted too often, the capacity
will start to degrade. If the batteries are being equalized too often, there will be
excessive water loss requiring higher maintenance. Adjust the equalization schedule for
09030-78B
GSE
Webasto Charging Systems, Inc.
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DVS
Field Service Manual