16Fault

Voltronic inverter error 16

GFCI sensor fault

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

The exact meaning depends on your model:

InfiniSolar WP LV 12KW Premium

InverterFault

What it means

GFCI sensor fault — Fault code 16 shown on the display with the fault icon on: GFCI sensor fault.

Cause: GFCI sensor fault.

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

GFCI sensor fault — Fault code 16 shown on the display with the fault icon on: GFCI sensor fault.

Cause: GFCI sensor failed.

How to fix it

Please contact your installer.

Source: InfiniSolar-10KW-manual-20191126.pdf, p.51 · InfiniSolar-15K-manual-20200313.pdf, p.52 · InfiniSolar-Super-4KW-manual.pdf, p.48 · +1 more official manuals

InfiniSolar E 5.5KW

InverterFault

What it means

Leakage current CT failed — Fault code 16 shown on the display with the fault icon on: Leakage current CT failed.

Cause: Leakage current CT failed.

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

Leakage current CT failed — Fault code 16 shown on the display with the fault icon on: Leakage current CT failed.

Cause: Leakage current CT failed.

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

GFCI Senser fault — Fault code 16 shown on the display with the fault icon on: GFCI Senser fault.

Cause: Internal components failed.

How to fix it

Please contact your installer.

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

ESS510

Energy storage systemFault

What it means

Leakage current CT failed — Fault code 16 shown on the display with the fault icon on: Leakage current CT failed..

Cause: Leakage current CT failed.

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

Frequently asked questions

What does error 16 mean on a Voltronic inverter?
It depends on the model — 9 devices use code 16. On the InfiniSolar WP LV 12KW Premium it means: GFCI sensor fault. The card for each model on this page gives its exact meaning and fix.
Is error 16 a fault or a warning?
16 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 16?
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 InfiniSolar WP LV 12KW Premium

All InfiniSolar WP LV 12KW Premium codes

Other codes on the InfiniSolar 10KW

All InfiniSolar 10KW codes All InfiniSolar 15KW codes All InfiniSolar Super 4KW codes All InfiniSolar Plus 5KW codes

Other codes on the InfiniSolar E 5.5KW

All InfiniSolar E 5.5KW codes

Other codes on the InfiniSolar 2KW/3KW

All InfiniSolar 2KW/3KW codes

Other codes on the InfiniSolar TX-PA 30KW

All InfiniSolar TX-PA 30KW codes

Other codes on the ESS510

All ESS510 codes

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