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Make sure to always use the latest version of this

service document, available at:

www.bydbatterybox.com

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

found

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: Improper handling can cause danger and damage

Version 1.0

BYD

Battery-Box

LV Flex Lite

Service

Guideline

and

Checklist

Содержание Battery-Box LV Flex Lite

Страница 1: ...sional and qualified electricians This checklist is a shortened assistance for the Battery Box and does not replace theoriginal 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 Improper handling can cause danger and damage Version 1 0 BYD Battery...

Страница 2: ...2 Contents 1 GENERAL STEPS 3 2 ERROR ANALYSIS 4 3 MEASUREMENT 16 4 SERVICE TASKS 18 4 1 BMU Replacement 18 4 2 LV Flex Lite Module Replacement 18 ...

Страница 3: ...he inverter Otherwise communication problems are possible 3 Ethernet Cable for Internet strongly recommended 4 DC Ports Make sure that and are properly connected 5 Correct parallel connection cabling if applicable Notes about DC connection Conductor cross section 16mm2 Maximum cable length 20m 1 3 Latest Firmware Always install update the newest Firmware Note If not stated otherwise Wi Fi password...

Страница 4: ...ral steps before proceeding see chapter 1 2 1 BMU shows no reaction No LED LED of BMU does not light up although the battery is ON No Name Description 2 1 1 Check correct cable port Make sure that the correct data cable port has been used at the BMU BMS port Do not mix with inverter or Ethernet port 2 1 2 Replace Comm Cable Try a completely new communication cable between battery and BMU Note Some...

Страница 5: ...check whether the BMS information of this module could be detected 2 2 3 Switch on the suspected module Press the LED button for three seconds to power one the suspected module If the LED cannot be lighted up the battery module is faulty 2 2 4 Voltage measurement Check voltage of the affected module s See Section 3 1 Voltage should be around 50V If voltage is lower than 38V it might be unable to p...

Страница 6: ...ery Wi Fi turns off 5 hours after the start of the Battery To reactivate the Wi Fi press the LED button about 1 second or restart the system To reset the Wi Fi module press the LED button three times each time around one second within 6 seconds If problem remains remove the LAN cable during the configuration Once the Battery has been configured correctly you can connect it again to the Internet ch...

Страница 7: ...a Switch off the Inverter first then switch off the battery second Press LED for 5 seconds b Wait for 2 Minutes c Turn on the Battery first then turn on the inverter second 3 Wait for 30 Minutes 4 Check BMS Firmware Version again with App If Version is still wrong do the update process again if possible with another mobile device 5 Note if Voltage of Battery is not shown in BC APP the update will ...

Страница 8: ...e is connected to the right port of BMU the one labeled as BMS Replace comm cable between BMU and battery 2 4 4 Comm cable between modules Try to unplug the comm cable between the first affected LV Flex Lite module and the one above it and plug it again Or try a completely new comm cable between the first affected LV Flex Lite module and the one above it Please check if BC APP configuration was su...

Страница 9: ... No Name Description 2 5 1 Configuration www bydbatterybox com Make sure the inverter is configured correctly 2 5 2 Inverter settings Make sure to configure the battery correctly on the inverter interface Refer to inverter manual for details 2 5 3 Comm cable Confirm PIN Cable Configuration for the specific inverter model see manual Replace the communication cable min CAT5 2 5 4 Check inverter stat...

Страница 10: ...rter 2 6 3 Battery Logs History Data Download and provide all the historic battery log files with BCP in order to identify the root cause See section 2 9 for details You can also upload logs with BC APP See section 2 10 2 7 Unexpected shutdown System has been successfully commissioned in the past and did run for some time Later on an unexpected shutdown occurred No Name Description 2 7 1 Inverter ...

Страница 11: ...e We start to count when the white LED begins to flash then we count how many times white and blue LED flashes Also refer to the manual Example EC BMU EC BMS Measure No LED See section 2 1 No LED See section 2 2 Abnormal LED flickering See section 2 1 Module Exclusion Method see section 3 2 Check if the system works when bypassing the suspected module 1 x white 6 x blue EC 106 1 x white 11 x blue ...

Страница 12: ...pleted correctly especially module quantity Check terminal resistor The terminal resistor 120Ω at pin 5 6 is responsible for a clean communication between BMS and BMU In rare cases it can be damaged and can disturb the signal In these rare cases it is recommended to remove the terminal resistor replace communication cable between Battery and BMU Restart system according to manual Note to properly ...

Страница 13: ... the historical and the cell data section 2 9 or upload logs with BC APP See section 2 10 provide the SN and voltage of the faulty module see checklist on last page EC 104 EC 101 Short circuit DC reverse connection Check DC cabling is there any short circuit Fuse between battery and inverter closed Disconnect the battery system from the inverter and restart the battery system alone battery isolate...

Страница 14: ...re to choose the right model type 2 9 Be Connect Plus BCP Be Connect Plus is a Windows PC tool With BCP you can read the battery information configure the battery system update BMU BMS firmware Export download battery logs From BMU and all BMS BCP is constantly being improved and updated Make sure to use the latest program version You can download the latest version of the Tool on www bydbatterybo...

Страница 15: ...ata with BC APP When you reach the Status interface press the three dots on the top left corner and you will see the menu Choose Upload Logs and following the instructions then you can upload the logs to the BYD server Figure 4 BC APP screenshot ...

Страница 16: ...ssion the remaining system if it still complies with the minimum configuration list and check if it runs properly If the problem remains please also bypass the module above the one with the Event Code Otherwise try the LV Flex Lite Modules one by one to identify a possibly faulty module If no LED on a module or more modules check the one above the affected module first and then the affected one Fo...

Страница 17: ...undervoltage remove that module and try commissioning without it if the remaining modules still comply with the Compatible Inverter List Otherwise make sure to avoid further over discharge Turn off the system completely If one or all modules are in undervoltage Contact BYD local service and make sure to avoid any further discharge of the battery Turn off the system completely When contacting the s...

Страница 18: ... you detected a faulty BMU After replacing the BMU please do not forget to re do the configuration and firmware update with BC APP or BCP 4 2 LV Flex Lite Module Replacement After replacing a Module please do not forget to re do the configuration and firmware update in BC APP Every module has its own BMS ...

Страница 19: ...contacting us you confirm that a qualified person has done the necessary control and collected all available information above Service Contact BMS EventCode s and related Module Serial Number s ERROR RELATED ANALYSIS Please mark the error related Analysis from Chapter 2 and 3 page 4 17 of the Service Guideline that you checked and collect all the information related to those Sections 2 1 BMU shows...

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