11Fault

Voltronic inverter error 11

PV over voltage

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 8K TWIN PV11K+12

What it means

PV over voltage — Fault code 11 shown on the display with the fault icon on: PV over voltage.

Cause: PV over voltage.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: Axpert-MAXII-8K-TWIN-Off-grid-manual.pdf, p.47 · Axpert-MAXII-11K-TWIN-Off-grid-manual.pdf, p.47 · Axpert-MAXII-8K-Duplex-Off-grid-manual.pdf, p.44 · +12 more official manuals

Axpert KS

InverterFault

Also applies to:Axpert KS 1KVAAxpert KS 3KVAAxpert KS 5KVAAxpert 3KP 24VAxpert 5KP 24V

What it means

Main relay failed — Fault code 11 shown on the display with the fault icon on: Main relay failed.

Cause: Main relay failed.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: Axpert-KS-1-5KVA_manual_EN.pdf, p.31 · Axpert-3KP-5KP-24V_manual.pdf, p.26

InfiniSolar V II

InverterFault

Also applies to:InfiniSolar V II 2KWInfiniSolar V II 3KWInfiniSolar V II 5KWInfiniSolar V II WP 2KWInfiniSolar V II WP 3KWInfiniSolar V II WP 5KW

What it means

PV voltage over — Fault code 11 shown on the display with the fault icon on: PV voltage over.

Cause: Solar input voltage is more than 450V.

How to fix it

Solar input voltage is more than 450V.

Source: InfiniSolarVII_2KW-3KW-5KW_manual.pdf, p.26 · InfiniSolarVII_2KW-3KW-5KW_manual.pdf, p.28 · InfiniSolar-VII-WP-2KW-3KW-5KW-manual-20201127.pdf, p.29 · +1 more official manuals

InfiniSolar V II 1.5KW

InverterFault

What it means

PV voltage over — Fault code 11 shown on the display with the fault icon on: PV voltage over.

Cause: PV voltage is over limitation.

How to fix it

Reduce PV serial amount.

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

InfiniSolar V II 6KW (Split Phase)

InverterFault

Also applies to:InfiniSolar V II 2P 6KW

What it means

PV voltage is over — Fault code 11 shown on the display with the fault icon on: PV voltage is over..

Cause: Solar input voltage is more than 450V.

How to fix it

Solar input voltage is more than 450V.

Source: InfiniSolar-VII-2P-6KW-manual-20201207.pdf, p.30 · InfiniSolar-VII-2P-6KW-manual-20201207.pdf, p.32

InfiniSolar WP LV 12KW Premium

InverterFault

What it means

Solar over current — Fault code 11 shown on the display with the fault icon on: Solar over current.

Cause: Solar over current.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: InfiniSolar-WP-LV-12KW-Premium-manual.pdf, p.52

InfiniSolar 10KW

InverterFault

Also applies to:InfiniSolar 15KWInfiniSolar Super 4KWInfiniSolar Plus 5KW

What it means

Solar over current — Fault code 11 shown on the display with the fault icon on: Solar over current.

Cause: Surge.

How to fix it

  1. Restart the inverter
  2. If the error message still remains, please contact your installer.

Source: InfiniSolar-10KW-manual-20191126.pdf, p.50 · InfiniSolar-15K-manual-20200313.pdf, p.51 · InfiniSolar-Super-4KW-manual.pdf, p.47 · +1 more official manuals

InfiniSolar E 5.5KW

InverterFault

What it means

Over-current on PV input is detected — Fault code 11 shown on the display with the fault icon on: Over-current on PV input is detected.

Cause: Over-current on PV input is detected.

How to fix it

  1. Disconnect AC circuit breaker first.
  2. Then, disconnect DC circuit breaker.
  3. Until LCD screen completely shuts down, turn on DC breaker first.
  4. It will show "No Utility" in LCD screen.
  5. Then, turn on AC breaker.
  6. After 300 seconds, the system will automatically connect to the grid.
  7. If the error message still remains, please contact your installer.
  8. The internal temperature is higher than specified temperature.
  9. Leave inverter to cool down to room temperature.
  10. If the error message still remains, please contact your installer.
  11. Check if the open circuit voltage of PV modules is higher than 500VDC.
  12. If PV open circuit voltage is less than 500VDC and the error message remains, pelase contact your installer.
  13. Turn off the inverter.
  14. Then, restart the inverter.
  15. If the error message still remains, please contact your installer.
  16. The ground voltage is too high.
  17. Please disconnect AC breaker first and then DC breaker.
  18. Check if grounding is connected properly after LCD screen.

Source: InfiniSolarE-5.5KW-manual.pdf, p.43

InfiniSolar 2KW/3KW

InverterFault

Also applies to:InfiniSolar 2KWInfiniSolar 3KW

What it means

Over-current on PV input is detected — Fault code 11 shown on the display with the fault icon on: Over-current on PV input is detected.

Cause: Over-current on PV input is detected.

How to fix it

  1. Disconnect AC circuit breaker first. Then, disconnect DC circuit breaker
  2. Until LCD screen completely shuts down, turn on DC breaker first. It will show "No Utility" in LCD screen. Then, turn on AC breaker. After 300 seconds, the system will automatically connect to the grid
  3. If the error message still remains, please contact your installer.

Source: InfiniSolar-2KW3KW-manual.pdf, p.46

InfiniSolar TX-PA 30KW

InverterFault

What it means

Solar IP Curr over — Fault code 11 shown on the display with the fault icon on: Solar IP Curr over.

Cause: Surge.

How to fix it

  1. Restart the inverter
  2. If the error message still remains, please contact your installer.

Source: InfiniSolar-TX-PA_manual.pdf, p.50

ESS510

Energy storage systemFault

What it means

Over-current on PV input is detected — Fault code 11 shown on the display with the fault icon on: Over-current on PV input is detected..

Cause: Over-current on PV input is detected.

How to fix it

  1. Disconnect AC circuit breaker first.
  2. Then, disconnect DC circuit breaker.
  3. Until LCD screen completely shuts down, turn on DC breaker first.
  4. It will show "No Utility" in LCD screen.
  5. Then, turn on AC breaker.
  6. After 300 seconds, the system will automatically connect to the grid.
  7. If the error message still remains, please contact your installer.

Source: ESS510-manual.pdf, p.68

Galleon II 6K-10K

upsFault

Also applies to:Galleon II 6KGalleon II 10KGalleon III 1KGalleon III 2KGalleon III 3KGiant Elite 1P/1P 6K-10KWinner Pro 6KVAWinner Pro 10KVA+3

What it means

Inverter soft start failure — Fault code 11 shown on the display; the UPS has detected a fault condition: Inverter soft start failure.

Cause: Inverter soft start failure.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: GalleonII-6-10K-Tower-RT-manual.pdf, p.29 · Galleon-III-Tower-Rack-1-3K-manual.pdf, p.31 · Giant-Elite-1P-1P_manual.pdf, p.26 · +2 more official manuals

Galleon X9 6K-10K RT

upsFault

Also applies to:Galleon X9 6K RTGalleon X9 10K RT

What it means

Inv Start Fail — Fault code 11 shown on the display; the UPS has detected a fault condition: Inv Start Fail.

Cause: The internal inverter failed, so the inverter voltage could not start up correctly.

How to fix it

Contact the dealer to repair.

Source: Galleon-X9-6-10K-RT_manual.pdf, p.29

Giant Elite 3P/3P

upsFault

Also applies to:Giant Elite 3P/3P 10K-40KVA

What it means

INV voltage in L2 is too low — Fault code 11 shown on the display; the UPS has detected a fault condition: INV voltage in L2 is too low.

Cause: INV voltage in L2 is too low.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: Giant-Elite-3P3P-manual.pdf, p.41

Winner Pro

upsFault

Also applies to:Winner Pro 1KVA-3KVAOtima II 800VA-3KVAOtima II Tower 1K-5K

What it means

Inverter soft start fail — Fault code 11 shown on the display; the UPS has detected a fault condition: Inverter soft start fail.

Cause: Inverter soft start fail.

How to fix it

  1. Restart the unit.
  2. If the fault happens again, contact your installer or the repair centre.

Source: Winner-Pro_manual.pdf, p.15 · Otima-II-User-Manual.pdf, p.17 · OtimaII-Tower-1K-5K-manual.pdf, p.14

Frequently asked questions

What does error 11 mean on a Voltronic inverter?
It depends on the model — 38 devices use code 11. On the Axpert MAX II TWIN it means: PV over voltage. The card for each model on this page gives its exact meaning and fix.
Is error 11 a fault or a warning?
11 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 11?
Restart the unit. If the fault happens again, contact your installer or the repair centre. The exact steps for each affected model are listed on this page.

Related error codes

Other codes on the Axpert MAX II TWIN

All Axpert MAX II TWIN codes All Axpert MAX II Duplex codes All Axpert MAX II codes All Axpert MAX TWIN codes All Axpert MAX E TWIN codes All Axpert MAX E Duplex codes All Axpert MAX codes All Axpert MKS IV TWIN codes All Axpert MKS IV codes All Axpert MKS III TWIN codes All Axpert MKS II codes All Axpert WP TWIN codes All ESS-A510 codes

Other codes on the Axpert KS

All Axpert KS codes All Axpert 3KP/5KP 24V codes

Other codes on the InfiniSolar V II

All InfiniSolar V II codes All InfiniSolar V II WP codes

Other codes on the InfiniSolar V II 1.5KW

All InfiniSolar V II 1.5KW codes

Other codes on the InfiniSolar V II 6KW (Split Phase)

All InfiniSolar V II 6KW (Split Phase) codes

Other codes on the InfiniSolar WP LV 12KW Premium

All InfiniSolar WP LV 12KW Premium codes

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