Is error W69 a fault or a warning?

W69 is a warning: the unit keeps running. Fix the underlying condition before it escalates.

How do I clear or fix error W69?

Follow the battery BMS state; charging resumes when the battery allows it. If the warning persists, check the battery status and communication.

W69

Voltronic ESS error W69

BMS stops battery charging

Warning — a protection warning — the ESS unit keeps running, but deal with the cause before it escalates.

ESS510

Energy storage systemWarning

What it means

BMS stops battery charging — Warning code 69 flashing on the display: BMS stops battery charging..

Cause: Battery status is not allowed to charge after the communication between the inverter and battery is successful; code 69 shows to stop charging the battery.

How to fix it

Follow the battery BMS state; charging resumes when the battery allows it.
If the warning persists, check the battery status and communication.

Source: ESS510-manual.pdf, p.71

Frequently asked questions

What does error W69 mean on a Voltronic ESS?: W69 means: BMS stops battery charging. Battery status is not allowed to charge after the communication between the inverter and battery is successful; code 69 shows to stop charging the battery.
Is error W69 a fault or a warning?: W69 is a warning: the unit keeps running. Fix the underlying condition before it escalates.
How do I clear or fix error W69?: Follow the battery BMS state; charging resumes when the battery allows it. If the warning persists, check the battery status and communication.

Related error codes

Other codes on the ESS510

All ESS510 codes

Compiled from official Voltronic user manuals. Always consult your device manual and a qualified technician before performing repairs.