BYD Battery-Box Premium HVS Series User Manual

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BYD Battery-Box Premium HVS/HVM
Service Guideline and Checklist
Version 1.0
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Valid forHVS 5.1 / 7.7 / 10.2 / 12.8
HVM 8.3 / 11.0 / 13.8 / 16.6 / 19.3 / 22.1
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Make sure to always use the latest version of this service document,
available at: www.bydbatterybox.com
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Important: The installation and all other kinds of works or measurements in combination with the Battery-Box
Premium are only allowed by professional and qualified electricians.
This checklist is a shortened assistance for the Battery-Box and does not replace the original manual, which can                 
be found on www.bydbatterybox.com / www.eft-systems.de / www.alpspower.com.au. Subject to technical          
modifications; no responsibility is accepted for the accuracy of this information. Attention: High Voltage!             
Improper handling can cause danger and damage.

BYD Battery-Box Premium HVS Series Specifications

General

Brand	BYD
Model	Battery-Box Premium HVS Series
Category	Camera Accessories
Language	English

Summary

General Steps for BYD Battery-Box Premium

Configuration Check

Verify correct system configuration, referencing the compatible inverter list.

Module Compatibility (HVS vs HVM)

Ensure HVS and HVM modules are not mixed within the same system.

External Connections Guide

Details on connecting to inverter, parallel ports, dip-switches, internet, DC-ports, and grounding.

Closed Connection Area Requirement

The connection area must be closed for the system to operate safely.

Correct Switch-On Procedure

Follow the specified sequence for switching on the Battery-Box and inverter.

App Configuration and Firmware Update

Mandatory configuration via BYD Be Connect App; ensure the latest firmware is installed.

Verifying System Operation

Confirm correct system operation by checking inverter display, charging, and discharging.

Troubleshooting BYD Battery-Box Errors

BCU No Reaction or LED

Diagnose issues where BCU LEDs are not lighting up when the system switch is ON.

BCU Switch Shuts Off Immediately

Address situations where the system switch turns off within 5 seconds of activation.

Communication Issues with Inverter

Resolve problems related to data communication between the Battery-Box and the inverter.

Firmware Update and App Configuration Problems

Troubleshoot failures during firmware updates or app configuration for BCU and BMS.

BCU LED Event Codes (EC)

Interpret BCU LED patterns to identify specific error conditions and their causes.

Visual Inspection of Module Pins

Perform a visual check for bent or twisted pins on battery modules.

Voltage Measurement Procedure

Guidance on measuring tower voltage on the topmost module and individual modules.

Identifying a Faulty Battery Module

Step-by-step method to locate and identify a malfunctioning module within the tower.

BYD Battery-Box Service Tasks

BCU Replacement Guide

Procedure for replacing a faulty BCU, including re-configuration and firmware updates.

Battery Module Replacement

Instructions for replacing a faulty module, considering SOC and system configuration.