Bluetti EP800 error codes
5 codes from the official Bluetti manual (EP800 Home Energy Storage System), each with the manual page. For 5 of them the manual says to contact an authorized service dealer.
Applies to: Bluetti EP800.
| Code | What it means | What to do | Service | Manual |
|---|---|---|---|---|
| B017 PV1 Overcurrent | PV1 input current is too high. The manual states PV1 must stay within 12.5A. | Log in to the App, bind the EP800, and connect via Bluetooth to check for firmware updates. Confirm PV1 input current is below 12.5A using the App's real-time monitor. Restart the EP800. If the issue persists, contact BLUETTI support. | dealer | p. 68 |
| B018 PV2 Overcurrent | PV2 input current is too high. The manual states PV2 must stay within 25A. | Log in to the App, bind the EP800, and connect via Bluetooth to check for firmware updates. Confirm PV2 input current is below 25A using the App's real-time monitor. Restart the EP800. If the issue persists, contact BLUETTI support. | dealer | p. 68 |
| B019 PV1 Voltage High | PV1 input voltage is too high. The total open-circuit voltage must stay within 500V. | Immediately turn off the PV input switch. Check that the total open-circuit voltage is within 500V. If not, reduce the number of PV modules connected in series. The inverter resumes automatically after correction. Restart the EP800. If the issue persists, contact BLUETTI support. | dealer | p. 68 |
| B020 PV2 Voltage High | PV2 input voltage is too high. The total open-circuit voltage must stay within 500V. | Immediately turn off the PV input switch. Check that the total open-circuit voltage is within 500V. If not, reduce the number of PV modules connected in series. The inverter resumes automatically after correction. Restart the EP800. If the issue persists, contact BLUETTI support. | dealer | p. 68 |
| B031 Phase Sequence Error | The grid phase connection is wrong. Mains L1 and L2 may be incorrectly connected to the EP800 GRID terminals. | 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. | dealer | p. 68 |
Source: official Bluetti manual, read 2026-11-01. "Owner" means the manual lists steps you can take; "dealer" means it directs you to authorized service. Fuel, gas and electrical work on generators is for qualified technicians; follow the manual's safety section.