Bluetti EP800 code B031
What it means: The grid phase connection is wrong. Mains L1 and L2 may be incorrectly connected to the EP800 GRID terminals.
What to do
On first installation, connect mains L1 and L2 correctly to the EP800 GRID terminals. Switch both mains phases on or off simultaneously. Restart the EP800. If the issue persists, contact BLUETTI support.
When to call service
The manual directs you to an authorized Bluetti service dealer for this code if the steps above do not clear it. A warning: the unit may keep running, but the cause needs attention.
Source: official Bluetti manual, page 68, read . Summary of the manual, not a reproduction.
Models this manual covers
Other EP800 codes
Questions
What does Bluetti code B031 mean?
The grid phase connection is wrong. Mains L1 and L2 may be incorrectly connected to the EP800 GRID terminals. (Bluetti manual for the EP800, page 68.)
How do I fix Bluetti code B031?
On first installation, connect mains L1 and L2 correctly to the EP800 GRID terminals. Switch both mains phases on or off simultaneously. Restart the EP800. If the issue persists, contact BLUETTI support. The manual says to contact an authorized service dealer if it continues.
Fuel, gas and electrical work on a home battery is for qualified technicians; follow the safety section of the manual. All 5 EP800 codes →