What does error T6 mean on a Felicity battery?

T6 means: Akkudaten am Wechselrichter fehlen oder falsch (Parallelbetrieb). The parallel connection of the batteries is not set up correctly.

Is error T6 a fault or a warning?

T6 is a fault code: the battery enters protection and stops normal operation until it is cleared.

How do I clear or fix error T6?

1. Check the communication cables between the batteries.

Felicity battery error T6

Akkudaten am Wechselrichter fehlen oder falsch (Parallelbetrieb)

Fault — the battery enters fault protection and stops normal operation until the fault is cleared — how it is shown (LED pattern or display code) depends on the model.

FLS48100SG2

BatteryFault

What it means

Akkudaten am Wechselrichter fehlen oder falsch (Parallelbetrieb) — When multiple batteries are connected in parallel, battery data on the inverter is missing or incorrect. Maintenance troubleshooting item (no LCD code).

Cause: The parallel connection of the batteries is not set up correctly.

How to fix it

Check the communication cables between the batteries
Check whether the battery DIP switches are set in the correct sequence (per the DIP code table).

Source: Benutzerhandbuch - Felicity FLS48100SG2.pdf, p.27

Frequently asked questions

What does error T6 mean on a Felicity battery?: T6 means: Akkudaten am Wechselrichter fehlen oder falsch (Parallelbetrieb). The parallel connection of the batteries is not set up correctly.
Is error T6 a fault or a warning?: T6 is a fault code: the battery enters protection and stops normal operation until it is cleared.
How do I clear or fix error T6?: 1. Check the communication cables between the batteries.

Related error codes

Other codes on the FLS48100SG2

All FLS48100SG2 codes

Prefer the full written guide? Read the complete Felicity inverter error-code guide

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