DVS Fast Charging System
Operation and Maintenance Manual
09910-W-03-02
Page
23 of 27
Webasto Charging Systems, Inc.
7.2 Actions
A
Not field serviceable. Contact your Authorized DVS/MVS 330 Fast Charging System
Service Provider.
B
A qualified service technician must replace the Control Board. Contact your Authorized
DVS/MVS 330 Fast Charging System Service Provider.
C
Disconnect AC power from the Charger and check the input fuses, F3 and F4, inside the
front panel of the PowerServer. A good fuse should measure 0 Ohms across the fuse. If
the fuse has blown, replace it with the same size and rating of fuse.
D
Check that the AC wiring is connected properly to a 3-phase circuit, the unit is grounded,
and that the circuit breaker is closed.
E
Not used
F
Check the output wiring of the BMID unit.
1.
Ensure that all power and signal connectors are completely mated, and that there is no
physical damage to the connector or pitting on the contact that could cause poor
connections.
2.
Check that the communication and pilot wires are connected to the unit. Check that
all pins are seated correctly in each connector.
3.
Visually inspect the insulation on all of the wires and verify that there are no shorts or
burn marks on any of the wires. Check the continuity between the wire and chassis
ground using a multi-meter.
4.
Verify that the BMID is installed properly (Refer to BMID manual).
G
Visually inspect the BMID and the thermistor. If the potting of the BMID looks cracked,
or the thermistor appears corroded, avoid erratic charging by replacing these components
even if functional problems have not yet occurred. Temporarily attach another BMID or
thermistor to the pack. If the problem is resolved, replace the bad component. If the
problem persists, plug the vehicle into another charge port. If this corrects the problem,
check continuity on all BMID interfaces on the original charge port.
H
The DVS/MVS 330 Fast Charging System contains built-in safety systems, which will
fold back charge in response to high battery temperatures, and stop charge completely if
the batteries get above a manufacturer’s specified threshold temperature. If the charger
has 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)
I
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
