BYD battery error code 11
BYD uses code 11 in more than one product range, and it doesn't always mean the same thing. Check which range your battery belongs to below.
WattMate is not affiliated with BYD. This page summarises BYD's own published documentation; your installer and BYD are the authority on your system. WattMate doesn't repair systems or make site visits.
As documented for Battery Box
- Meaning
- BMS and BMU communication failure
- Likely cause
- Communication between the Battery Management System and Unit has failed.
- What the manual says to do
- Contact an installer for assistance with troubleshooting this communication issue.
- Manufacturer's severity
- Critical
BYD's documentation says this one needs your installer.
Extracted from BYD's published manual. Check it against the manual for your model. Open the source document
As documented for Battery Box Hvb
- Meaning
- BMS and BMU communication failure
- Likely cause
- Communication issue between Battery Management System and Battery Management Unit
- What the manual says to do
- Contact your installer to check communication configurations.
- Manufacturer's severity
- Critical
BYD's documentation says this one needs your installer.
Extracted from BYD's published manual. Check it against the manual for your model. Open the source document
As documented for Hve
- Meaning
- BMS and BMU communication failure
- Likely cause
- Communication failure between battery management system and unit
- What the manual says to do
- Check connections and contact installer.
- Manufacturer's severity
- Critical
BYD's documentation says this one needs your installer.
Extracted from BYD's published manual. Check it against the manual for your model. Open the source document
As documented for Hvm
- Meaning
- BMS and BMU communication failure
- Likely cause
- Issues with the communication between Battery Management System and Battery Management Unit.
- What the manual says to do
- Check connections and contact service if the issue persists.
- Manufacturer's severity
- Critical
BYD's documentation says this one needs your installer.
Extracted from BYD's published manual. Check it against the manual for your model. Open the source document
As documented for Hvs
- Meaning
- BMS and BMU communication failure
- Likely cause
- Loss of communication between battery management system and battery management unit
- What the manual says to do
- Contact installer for repair as the system may not operate correctly
- Manufacturer's severity
- Critical
BYD's documentation says this one needs your installer.
Extracted from BYD's published manual. Check it against the manual for your model. Open the source document
When to call your installer or the warranty line
Your installer is your first warranty contact. If they've gone, the manufacturer's warranty line still covers the hardware. Don't open the inverter or battery case yourself: work inside it is for a licensed electrician.
If you see smoke, scorch marks or smell burning, switch the system off at the AC and PV isolators and call your installer. If anyone is in danger, call 000.
- BYD warranty phone
- +61 2 8005 6688
- BYD warranty email
- service@alpspower.com.au
- BYD service network
- Open the manufacturer's service page