DVS 400 Fast Charging System Operation and Maintenance Manual
09190-W-03-01
Page 26 of 27
Webasto Charging Systems, Inc.
AA)
Allow the unit to cool down, and verify that the AC input wiring is correct and the intake and exhaust vents
are clear of blockage. Re-start the charge. If the unit overheats again, contact your Authorized DVS 400
Service Provider.
BB)
Charge was terminated before scheduled end. If not terminated by user, check
CC)
Table
6.1
for possible causes.
DD)
Check the AC input with a multimeter to ensure that all three phases are connected and at the correct
voltage. If input power is correct, and the problem persists, contact your authorized DVS 400 Fast Charging
System service provider.
EE)
Check the utility line voltage. If the voltage is more than 10% below the rated value, remove other loads
from circuit. If the voltage problem persists, contact your local utility company.
FF)
Exposure to excessive moisture or corrosive environments may cause intermittent faults. Corroded parts
should be replaced.
GG)
Use the Charger Configuration menu to clear the ‘Battery Backed RAM’. (Note: Disconnecting the backup
battery to the computer board automatically sets this fault. When reconnected the fault must be cleared) If
the fault continues the memory/clock backup battery may need to be replaced.
HH)
Not used
II)
Not used
JJ)
If the display is intermittent or dark, the display connector may be loose. Open the unit and inspect the
control board to display interface. Check to make sure that all standoffs on the control board are screwed
down firmly to the front panel and are securely holding the control board at all locations. Correct any
problems found with the standoffs and cycle power to the DVS 400. If this does not correct the problem,
replace the door assembly. Burned out LED’s usually indicate a damaged membrane. Replace the door
assembly.
KK)
A power imbalance in 500A mode is indicated when the DVS 400 is delivering unequal current through each
channel. This can result from a contactor problem, a loose connection in the high current path of one
channel, a malfunction in the current sensor, or a malfunction on the control board.
LL)
If a VBAT MISMATCH error occurs, check the DVS 400 display and observe the voltage. If the voltage looks
correct for the battery, the problem is most likely in the high current path or the voltage sense path. Check
for continuity throughout the high current path from the power board to the battery in the vehicle. Check that
all cables connections are tight and that all contactors in the path are functioning properly.
MM)
If the voltage observed on the DVS 400 display does not seem appropriate for the battery in use, the
problem is in the BMID and the BMID should be replaced.
NN)
If an invalid pilot signal is indicated, check the pilot signal wiring. If the pilot signal wiring and connections
check out, check the charger with another vehicle to isolate the problem to either the charger or the vehicle.
If the problem goes away when another vehicle is used, replace the BMID in the vehicle that caused the
fault. If the fault persists when the vehicle is changed, replace the control board in the DVS 400.
OO)
Reseat the power stage Temp Sense connectors. Check the heat sink thermistors (Resistance should be
greater than 60K ohms).
