====== Guide to Replacing a BMS-EX on-site ======

This guide details the necessary steps to replace a BMS-EX on-site while preserving the data and settings from the BMS to be replaced.


===== 1. Minimum Requirements =====

  - Logger software version is V9.129 or greater (update if necessary).
  - Old BMS must be EX series.
  - Old BMS must be online and visible on the logger.
  - Old BMS firmware version is 202 or greater. Update if necessary.
  - Copy the old BMS's serial number. General Info --> BMS Information --> Serial Number

<WRAP center round important 100%>
//**THE OLD BMS MUST BE ONLINE AND VISIBLE ON THE LOGGER AFTER IT HAS BEEN UPDATED!!!
**//</WRAP>

===== 2. Replacement =====

  - The old BMS may now be removed from the battery, and the new BMS installed in its place.
  - Verify the BMS is securely installed and that all connectors are seated correctly.
  - After switching the new BMS on, it will start up and remain in an error state until the replacement process has been completed via the wizard. The CANBUS 1 interface on the new BMS should show activity (blinking green LEDs).

===== 3. Configuration =====


  - The old BMS may now be removed from the battery, and the new BMS installed in its place.
  - Navigate to **MyPower24 → My Devices → Li-ion Storage EX Series**.
  - Click on the orange service alert icon :!: . **(A)**
  - A dialog box indicates that the logger has detected a replacement BMS. Click to continue. **(B)**
  - A second dialog box will open asking you to type in the serial number of the BMS that was replaced. Once populated, click ''Complete replacement ''. **(C)**
  - It may take up to a minute for the configuration file to be copied to the new BMS. Once the process is complete, a blue balloon will pop up confirming the operation was successful.  The BMS will now appear online.

{{:solarmd:bms-ex:replacement:20250313-122314.png}}

{{:solarmd:bms-ex:replacement:20250313-122426.png}}

===== 4. Troubleshooting =====

  - There is a blue info icon instead of a orange service alert icon, with message: Replacement BMS with invalid Production Flag Detected.