What does error 44 mean on a Voltronic inverter?

44 means: Inv S/T short. Output short circuited.

How do I clear or fix error 44?

1. Check if wiring is connected well and remove abnormal load.

Inv S/T short

Fault — the inverter cuts its output and the red LED stays solid until the fault is cleared.

InverterFault

Inv S/T short — Fault code 44 shown on the display with the fault icon on: Inv S/T short.

Cause: Output short circuited.

Source: InfiniSolar-TX-PA_manual.pdf, p.51

What does error 44 mean on a Voltronic inverter?: 44 means: Inv S/T short. Output short circuited.
Is error 44 a fault or a warning?: 44 is a fault code: the inverter cuts its output and the red LED stays solid until it is cleared.
How do I clear or fix error 44?: 1. Check if wiring is connected well and remove abnormal load.

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