04Fault

Voltronic inverter error 04

Battery voltage is too low

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+43

What it means

Battery voltage is too low

Cause: Battery voltage 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: 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 · +25 more official manuals

InfiniSolar WP LV 12KW Premium

InverterFault

What it means

INV soft start time out — Fault code 04 shown on the display with the fault icon on: INV soft start time out.

Cause: INV soft start time out.

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 5KWInfiniSolar TX-PA 30KW

What it means

INV soft start time out — Fault code 04 shown on the display with the fault icon on: INV soft start time out.

Cause: Internal components failed.

How to fix it

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 · +2 more official manuals

InfiniSolar E 5.5KW

InverterFault

What it means

Inverter soft-start is time-out — Fault code 04 shown on the display with the fault icon on: Inverter soft-start is time-out.

Cause: Inverter soft-start is time-out.

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

Inverter soft-start is time-out — Fault code 04 shown on the display with the fault icon on: Inverter soft-start is time-out.

Cause: Inverter soft-start is time-out.

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

DC Converter 3KW

InverterFault

What it means

Average input current is abnormal — Fault code 04 shown on the display with the fault icon on: Average input current is abnormal..

Cause: Average input current is abnormal.

How to fix it

  1. Restart the converter
  2. If the problem remains, please contact your installer.

Source: DC-converter-3KW-manual.pdf, p.20 · DC-converter-3KW-manual.pdf, p.21

ESS510

Energy storage systemFault

What it means

Inverter soft-start is timeout — Fault code 04 shown on the display with the fault icon on: Inverter soft-start is timeout..

Cause: Inverter soft-start is timeout.

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 3KWinner Pro 1KVA-3KVAWinner Pro 6KVAWinner Pro 10KVA+3

What it means

Bus unbalance — Fault code 04 shown on the display; the UPS has detected a fault condition: Bus unbalance.

Cause: Bus unbalance.

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 · Winner-Pro_manual.pdf, p.15 · +2 more official manuals

Galleon X9 6K-10K RT

upsFault

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

What it means

Bus Unbalance — Fault code 04 shown on the display; the UPS has detected a fault condition: Bus Unbalance.

Cause: 1) The load is special or abnormal, so the internal positive and negative DC bus voltages are unbalanced. 2) The internal converter failed.

How to fix it

Contact the dealer.

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

BUS Soft start timeout — Fault code 04 shown on the display; the UPS has detected a fault condition: BUS Soft start timeout.

Cause: BUS Soft start timeout.

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

Frequently asked questions

What does error 04 mean on a Voltronic inverter?
It depends on the model — 43 devices use code 04. On the Axpert MAX II TWIN it means: Battery voltage is too low. The card for each model on this page gives its exact meaning and fix.
Is error 04 a fault or a warning?
04 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 04?
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 KING II TWIN codes All Axpert KING codes All Axpert MKS III TWIN codes All Axpert MKS II codes All Axpert VM II codes All Axpert VM II (PF1) codes All Axpert VM III codes All Axpert VM IV TWIN (VM4 TWIN) codes All Axpert KS codes All Axpert V (PF1) codes All Axpert WP TWIN codes All Axpert 3KP/5KP 24V codes All InfiniSolar V II codes All InfiniSolar V II 1.5KW codes All InfiniSolar V II 6KW (Split Phase) codes All InfiniSolar V II WP codes All InfiniSolar V codes All ESS-A510 codes All Galleon One 5KL 48V 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 All InfiniSolar TX-PA 30KW 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 DC Converter 3KW

All DC Converter 3KW codes

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