3.
2.
1.
Important: The installation and all other kinds of works or measurements in combination with the BYD Battery-Box are only
allowed by professional and qualified electricians. Improper handling can cause danger and damage. This document does
not replace the official BYD manuals and documents. No responsibility is accepted for the accuracy of the information.
.
BYD Battery-Box Premium LVS Service Checklist - V1.1 EN
Please fill all available information in below table. Some information like the Serial Number of the BCU is mandatory to receive service.
1.1 Configuration
1.2 Correct external cabling
1.3 Latest Firmware
1.4 App Configuration
1.5 Proper Restart
1.6 Correct Operation
SERVICE INFORMATION
GENERAL STEPS
Please carefully check
all
„General Steps“ from page 3 of the Service Guideline and confirm this in the boxes below
2.1 BMU does not turn on / LED is off or flickering abnormally
2.2 Modules do not show any reaction / No LED on module
2.3 Problem with the FW Update / App Configuration / WiFi
2.4 Incorrect output voltage / No BMS Data / BMU EC102
ERROR RELATED ANALYSIS
Please mark the
error related
Analysis from Chapter 2 of the Service Guideline that you checked, and collect all the
information related to those Sections
2.5 Communication issue with
Inverter / BMU EC106
2.6 SOC & charging logic
2.7 Unexpected shutdown
2.8 BMU/BMS LED Event Code (EC)
Company
Contact Person
Street / Nr.
ZIP / City
Phone
•
Service Ticket Number or System ID:
•
Installer / Delivery Address / Contact:
•
System Information
Battery Configuration (e.g. 2 x LVS 12.0 /...))
BMU Serial Number
BMU Connected to Internet
Inverter Brand + Model
Inverter Serial Number
Commissioning Date
BMU Firmware
BMS Firmware
Inverter Firmware
System Name on
Inverter Portal
( Provide access for: [email protected] )
•
Service Information
Yes
No
BMU EventCode (EC)
Inverter Error Code
Was the battery charging / discharging before (was the system working normally before?)
Get Data of the Battery-Box with the Be Connect Plus (BCP) Programm (see chapter 2.9)
Yes
No
Description of
the Problem
Please provide any additional information that is necessary or could help in the analysis of the service case (e.g. serial number of a
wrong module, video of a special behaviour; pictures; app screenshots; module voltages... )
By contacting us you confirm, that a qualified person has done the necessary control and collected all available information above.
Service Contact:
Europe: EFT-Systems GmbH
Australia: Alps Power Pty Ltd
www.eft-systems.de
www.alpspower.com.au
+49 9352 8523999
+34 9106 02267 (ES)
+61 02 8005 6688
+44 2037 695998 (UK) +39 0287 368364 (IT)
For Europe only: Register Ticket directly in the Online Service Center:
https://support.eft-systems.de/
BMS EventCode(s) and related Module Serial Number(s)
2.9 Be Connect Plus (BCP)
2.10 Voltage measurement
and undervoltage
2.11 Identifying a faulty
module / Module
Exclusion Method
