User Manual

2.3 Communication problem with Inverter
5
No.
Name
Description
18
Configuration
Check if the configuration is correct. Refer to latest “BYD Battery-Box Premium
HVS & HVM Compatible Inverter List” (V2.0 or above) available at:
www.bydbatterybox.com
Make sure the inverter is configured correctly.
19
Check DIP Switch
If only one tower is in use (no parallel connection), all DIP switches should be in
position: LEFT (except for Kostal PIKO MP plus - refer to manual)

If multiple HVS/HVM are in parallel connection, see manual for DIP configuration
20
Communication cable
- Confirm PIN / Cable Configuration for the specific inverter model
- Replace the communication cable (min. CAT5!)
21
Use another available
communication port
Dependent on the Inverter model, one or two of the three options of
communication ports shown below can be used (refer to the manual!).
Please try the other port and communication option if available for the inverter.

22

Grounding
Connect Battery-Box directly to the ground-bus of the house (do not connect over
inverter casing!). Only with a correct grounding of the battery, a trouble-free and
secure data transmission can be guaranteed. Use the correct connection, see
picture:

23
App Configuration and
Firmware
Please check if the App configuration was successful and the Firmware is the
most recent one. If there are problems, please refer to Section 2.3 and 2.4
24
Restart the entire system
- Switch off the Inverter
- Switch off the battery (Press LED for 5 seconds until system switch falls - Note: if
the Battery LED does not turn off afterwards, please contact the service)
- Wait for 2 Minutes, Turn on the Battery first and then inverter second
- Important: Please make sure the DC cable connection between battery and
inverter is good and if there is a switch in between, it is open. The DC connection
will prevent the system from operation, if it is not correct.