tested to verify that it is working properly.
It is absolutely mandatory that
the BMS have a direct means to turn off any and all charging sources.
3.
Verify that the maximum cell voltage settings are properly configured.
Double check that all the cell voltage settings on the “Cell Settings” tab of the
BMS utility profile settings are correct. If the maximum cell voltage is too low
that may cause this fault to set prematurely or under normal operation.
4.
Verify proper cell voltage wiring and check for wiring related faults.
Certain subcodes can be caused by incorrectly wired cell voltage inputs (if the
BMS is not receiving the proper voltages it can prevent the internal circuitry
from operating properly). Typically an incorrectly wired (or damaged) cell input
would show up as a secondary fault code (such as
P0A04
or
P0AFA
). If any of
these fault codes are actively set, they should be investigated first as they may
help indicate the root cause for this fault being set.
5.
Manually verify the cell voltage in question.
Using a handheld multimeter or voltage measurement device, manually verify
the voltage of the cell that the BMS has identified as being too low. If the
voltage measurement does not match what the BMS is reporting then there may
either be an external wiring related issue or an issue internal to the BMS itself.
Please see the “Incorrect Cell Voltage Readings” troubleshooting entry in the
Troubleshooting Guide for more details on ways to diagnose a cell voltage
reading incorrectly.
6.
Download the freeze frame for the fault code using the BMS Utility.
The BMS will normally produce a freeze frame on the “Diagnostic Trouble
Codes” screen in the BMS Utility when this fault code occurs that contains a
comprehensive list of BMS data parameters at the time the fault occurred.
It is
strongly recommended that the freeze frame be downloaded from the
BMS and saved to disk before the fault is cleared again
as this data may
assist in the future if further diagnostics are required.
Additionally this freeze
frame data may be requested by Technical Support if further assistance is
required.
NOTE:
Only Fault Codes with a (F) next to them have freeze frame data
available for download. If there is no (F) next to the fault, there is no stored
freeze frame available and this step can be skipped.
Steps to download the Freeze Frame:
1) Connect to the BMS using the Orion BMS utility.
2) Click the “Diagnostic Trouble Codes” tab at the top.
Document Revision: 1.0
Last Updated: 1/9/2018
Ewert Energy Systems, Inc
161 E. St Charles Rd. Carol Stream, IL 60188
Phone: (630) 868-3173