Is error T2 a fault or a warning?

T2 is a fault code: the battery enters protection and stops normal operation until it is cleared.

How do I clear or fix error T2?

Set the charging voltage on the inverter according to the recommended value in the battery manual (Max. charging voltage 57.6V; Float 57.6V; Cut-off 48V).

Felicity battery error T2

Battery does not fully charge

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

Battery does not fully charge — Battery does not fully charge. Maintenance troubleshooting item (no LCD code).

Cause: The charging voltage set on the inverter is too low (Ladespannung am Wechselrichter zu niedrig).

How to fix it

Set the charging voltage on the inverter according to the recommended value in the battery manual (Max.
Charging voltage 57.6V; Float 57.6V; Cut-off 48V).

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

Frequently asked questions

What does error T2 mean on a Felicity battery?: T2 means: Battery does not fully charge. The charging voltage set on the inverter is too low (Ladespannung am Wechselrichter zu niedrig).
Is error T2 a fault or a warning?: T2 is a fault code: the battery enters protection and stops normal operation until it is cleared.
How do I clear or fix error T2?: Set the charging voltage on the inverter according to the recommended value in the battery manual (Max. charging voltage 57.6V; Float 57.6V; Cut-off 48V).

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.