BYD battery error code 5
BYD uses code 5 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
- BCU voltage sensor faulty
- Likely cause
- Voltage sensor in Battery Control Unit is malfunctioning.
- What the manual says to do
- Contact a professional installer to inspect and rectify the 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
- BCU voltage sensor faulty
- Likely cause
- Issue with the BCU voltage sensing circuit
- What the manual says to do
- Contact your installer to replace or check the BCU.
- 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
- BCU voltage sensor faulty
- Likely cause
- The voltage sensing component in the Battery Control Unit is malfunctioning.
- What the manual says to do
- Contact authorized service personnel for further diagnosis.
- 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
- BCU voltage sensor faulty
- Likely cause
- Fault in the voltage sensing circuit
- What the manual says to do
- Contact installer for immediate assessment and repair
- 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 Lvl
- Meaning
- BMS and BMU communication failed
- Likely cause
- Communication breakdown between Battery Management and Unit
- What the manual says to do
- Check communication cables; 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 Hve
- Meaning
- BCU voltage sensor faulty
- Likely cause
- Voltage reading error from battery control unit
- What the manual says to do
- Monitor system voltage and contact installer if issues continue.
- Manufacturer's severity
- Warning
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