20Fault

Voltronic inverter error 20

Discharge circuit fault

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

It means the same on every affected model — find yours for the exact fix:

InfiniSolar E 5.5KW

InverterFault

What it means

Discharge circuit fault — Fault code 20 shown on the display with the fault icon on: Discharge circuit fault.

Cause: Discharge circuit fault.

How to fix it

  1. Check if the impedance between positive and negative poles to the ground is greater than 1MΩ.
  2. If the impedance is lower than 1MΩ, please contact your installer.
  3. Please disconnect AC breaker first and then disconnect DC breaker.
  4. After LCD screen is completely off, turn on DC breaker.
  5. Until it shows "No Utility" in LCD display, turn on AC breaker.
  6. After 300 seconds, the system will automatically connect to the grid.
  7. If error message remains, please contact your installer.
  8. Check if the connection between battery and inverter is good.
  9. Make sure battery condition is ok.
  10. Then, restart the inverter.
  11. If error message remains, please contact your installer.
  12. Remove exessive loads.
  13. Be sure the total power consumption of the connected loads are less than that of the maximum which this inverter can support.
  14. Then, restart the inverter.
  15. Check if battery cable is connected firmly.
  16. If error message remains, please contact your installer.
  17. Remove exessive loads.
  18. Then, restart the inverter.
  19. Turn off the inverter.
  20. Disconnect AC circuit breaker first.
  21. Then, disconnect DC circuit breaker and then disconnect the loads.
  22. Please check if load circuit is ok.
  23. After removing the error, turn on the PV DC.

Source: InfiniSolarE-5.5KW-manual.pdf, p.44

InfiniSolar 2KW/3KW

InverterFault

Also applies to:InfiniSolar 2KWInfiniSolar 3KW

What it means

Discharge circuit fault — Fault code 20 shown on the display with the fault icon on: Discharge circuit fault.

Cause: Discharge circuit fault.

How to fix it

  1. Please disconnect AC breaker first and then disconnect DC breaker
  2. After LCD screen is completely off, turn on DC breaker. Until it shows "No Utility" in LCD display, turn on AC breaker. After 300 seconds, the system will automatically connect to the grid
  3. If error message remains, please contact your installer.

Source: InfiniSolar-2KW3KW-manual.pdf, p.48

ESS510

Energy storage systemFault

What it means

Discharge circuit fault — Fault code 20 shown on the display with the fault icon on: Discharge circuit fault..

Cause: Discharge circuit fault.

How to fix it

  1. Please disconnect AC breaker first and then disconnect DC breaker.
  2. After LCD screen is completely off, turn on DC breaker.
  3. Until it shows "No Utility" in LCD display, turn on AC breaker.
  4. After 300 seconds, the system will automatically connect to the grid.
  5. If error message remains, please contact your installer.

Source: ESS510-manual.pdf, p.69

Frequently asked questions

What does error 20 mean on a Voltronic inverter?
20 means: Discharge circuit fault. Discharge circuit fault.
Is error 20 a fault or a warning?
20 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 20?
Check if the impedance between positive and negative poles to the ground is greater than 1MΩ. If the impedance is lower than 1MΩ, please contact your installer. The exact steps for each affected model are listed on this page.

Related error 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 ESS510

All ESS510 codes

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