What does error 55 mean on a Voltronic inverter?

It depends on the model — 29 devices use code 55. On the Axpert MAX II TWIN it means: Over DC voltage in AC output. The card for each model on this page gives its exact meaning and fix.

How do I clear or fix error 55?

If the battery is connected well, please return to repair center. The exact steps for each affected model are listed on this page.

Voltronic inverter error 55

Over DC voltage in AC output

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

The exact meaning depends on your model:

Axpert MAX II TWIN

InverterFault

Also applies to:Axpert MAX II TWIN 8KWAxpert MAX II TWIN 11KWAxpert MAX II TWIN 12KWAxpert MAX II Duplex 8KWAxpert MAX II Duplex 11KWAxpert MAX II 8KWAxpert MAX II 11KWAxpert MAX 3.6KW+17

What it means

Over DC voltage in AC output

Cause: Output voltage is unbalanced.

How to fix it

If the battery is connected well, please return to repair center.

Source: Axpert-MAXII-8K-TWIN-Off-grid-manual.pdf, p.47 · Axpert-MAXII-8K-TWIN-Off-grid-manual.pdf, p.55 · Axpert-MAXII-11K-TWIN-Off-grid-manual.pdf, p.47 · +27 more official manuals

Axpert MAX TWIN

InverterFault

Also applies to:Axpert MAX 8K TWIN PV11KAxpert MAX E TWIN 11KWAxpert MAX E 11K DuplexAxpert MKS III TWIN 6KWAxpert WP TWIN 8KWESS-A510

What it means

Over DC voltage in AC output — Fault code 55 shown on the display with the fault icon on: Over DC voltage in AC output.

Cause: Output voltage is unbalanced.

How to fix it

Restart the unit, if the error happens again, please return to repair center.

Source: Axpert-MAX-8K-TWIN-Off-grid-manual-20220121.pdf, p.39 · Axpert-MAX-8K-TWIN-Off-grid-manual-20220121.pdf, p.46 · Axpert-MAX-E-TWIN-11K-Off-grid-manual-20220121.pdf, p.40 · +9 more official manuals

Axpert VM II

InverterFault

Also applies to:Axpert VM II 1.2KVAAxpert VM II 2.5KVAAxpert VM II Plus 3KAxpert VM II 3KVA PF1Axpert VM II 5KVA PF1Axpert VM III 1.5KWAxpert VM III 3KWAxpert VM III 5KW+2

What it means

Over DC voltage in AC output — Fault code 55 shown on the display with the fault icon on: Over DC voltage in AC output.

Cause: Output voltage is unbalanced.

How to fix it

Reduce the number of PV modules in series.

Source: Axpert-VM-II-1.2KVA-2.5KVA_Plus-3K_manual.pdf, p.29 · Axpert-VM-II-1.2KVA-2.5KVA_Plus-3K_manual.pdf, p.33 · Axpert-VM-II-PF1-USB-dry-contact-100A_manual.pdf, p.28 · +5 more official manuals

InfiniSolar V II

InverterFault

Also applies to:InfiniSolar V II 2KWInfiniSolar V II 3KWInfiniSolar V II 5KWInfiniSolar V II 2P 6KWInfiniSolar V II WP 2KWInfiniSolar V II WP 3KWInfiniSolar V II WP 5KWInfiniSolar V 1KW+4

What it means

Over DC offset in AC output — Fault code 55 shown on the display with the fault icon on: Over DC offset in AC output.

Cause: Output voltage is unbalanced.

How to fix it

If the battery is connected well, please return to repair center.

Source: InfiniSolarVII_2KW-3KW-5KW_manual.pdf, p.26 · InfiniSolarVII_2KW-3KW-5KW_manual.pdf, p.28 · InfiniSolar-VII-2P-6KW-manual-20201207.pdf, p.30 · +5 more official manuals

InfiniSolar V II 1.5KW

InverterFault

What it means

Over DC offset in AC output — Fault code 55 shown on the display with the fault icon on: Over DC offset in AC output.

Cause: Output voltage is unbalanced.

How to fix it

Reduce PV serial amount.

Source: InfiniSolarVII_1.5KW_manual.pdf, p.27 · InfiniSolarVII_1.5KW_manual.pdf, p.29

InfiniSolar TX-PA 30KW

InverterFault

What it means

S INV Curr CT — Fault code 55 shown on the display with the fault icon on: S INV Curr CT.

Cause: Internal components failed.

How to fix it

Please contact your installer.

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

Frequently asked questions

What does error 55 mean on a Voltronic inverter?: It depends on the model — 29 devices use code 55. On the Axpert MAX II TWIN it means: Over DC voltage in AC output. The card for each model on this page gives its exact meaning and fix.
Is error 55 a fault or a warning?: 55 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 55?: If the battery is connected well, please return to repair center. The exact steps for each affected model are listed on this page.

Related error codes

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

Axpert MAX II TWIN

What it means

How to fix it

Axpert MAX TWIN

What it means

How to fix it

Axpert VM II

What it means

How to fix it

InfiniSolar V II

What it means

How to fix it

InfiniSolar V II 1.5KW

What it means

How to fix it

InfiniSolar TX-PA 30KW

What it means

How to fix it

Frequently asked questions

Related error codes

Other codes on the Axpert MAX II TWIN

Other codes on the Axpert MAX TWIN

Other codes on the Axpert VM II

Other codes on the InfiniSolar V II

Other codes on the InfiniSolar V II 1.5KW

Other codes on the InfiniSolar TX-PA 30KW