Omnik

Troubleshooting Guide for Solar PV Inverter

Resumable Faults

• Isolation Fault

  1. Check the impedance between PV (+) & PV (-) and ensure the inverter is earthed. Impedance must be greater than 2.4MΩ.
  2. Check for earth contacts on the AC side.

• Ground I Fault

  1. The ground current is too high.
  2. After disconnecting the AC side connection, unplug the inputs from the PV generator and check the peripheral AC system.
  3. After clearing the cause, reconnect the PV panel and AC connection, and check the PV-Inverter status.

• Grid Fault / Fac Failure: Fac Out of Range / AC Voltage Out of Range

  1. Wait momentarily; if the grid returns to normal, the PV-Inverter automatically restarts.
  2. Ensure the grid voltage and frequency meet specifications.

• Utility Loss

  1. Grid is not connected.
  2. Check grid connection cables.
  3. Verify grid usability.
  4. If the grid is okay and the problem persists, the inverter fuse may be open. Call service.

• Over Temperature in Inverter

  1. The internal temperature is higher than the specified normal value.
  2. Reduce the ambient temperature or move the inverter to a cooler environment.

• PV Over Voltage

  1. Check the open PV voltage to see if it's greater than or too close to 1000VDC (for specific models).
  2. If PV voltage is less than 1000VDC and the problem occurs, call local service.

Permanent Faults

• Consistent Fault: Fac, Vac, Ground I, DC Injection Differs for M-S

  • Disconnect PV (+) or PV (-) from the input, restart the inverter.

• AC Relay Check Fail

  1. Disconnect ALL PV (+) or PV (-).
  2. Wait a few seconds.
  3. After the LCD switches off, reconnect and check again.
  4. If problems remain, call local service.

• High DC Bus / DC Injection High / EEPROM R/W Fail / Fan Lock / M-S Version Unmatched / SPI Failure: Communication Fails between M-S / AC HCT Fault / GFCI Device Failure

  • General instruction for these faults is not provided in the text. Typically, these issues suggest a more severe hardware problem or failure, requiring professional service or support. Contact local service or technical support for assistance.

Solar Inverter Troubleshooting Guide

Fault Codes and Solutions

• F00: GFCI Device Fault

  • Display: Inverter GFCI Detector Issue
  • Solutions:
    1. Restart to check
    2. Re-Flash software
    3. Replace part or inverter

• F01: Island Fault

  • Display: No Grid or Local Grid Frequency Isn't Stable
  • Solutions: Restart to check after the local grid is stable. Close the protection from the inverter.

• F03: PV Volt Low

  • Display: DC voltage is below 150V
  • Solutions:
    1. Correct the installation (Add More Panels)
    2. Re-Flash software
    3. Replace part or inverter

• F04: Consistency Fault

  • Display: The Data Detected By Master And Slave CPU Is Inconsistent
  • Solutions:
    1. Restart to check
    2. Re-Flash software
    3. Replace part or inverter

• F05 & F06: Bus Volt Low/High

  • Display: Test Value Wrongly, Software Issue, Hardware Broken
  • Solutions:
    1. Restart to check
    2. Re-Flash software
    3. Replace part or inverter

• F09: No Utility

  • Display: No AC voltage
  • Solutions: Measure AC voltage with a multimeter. Check the wires in the AC cable.

• F10: Ground Current Fault

  • Display: Poor grounding, often occurs on rainy days.
  • Solutions:
    1. Ensure the inverter is well-grounded.
    2. Change to another standard with a wider protection range under authorization.

• F11: Bus Unbalance

  • Display: Inverter Control Circuit Problem, Values Of Two Rows Bus Capacitance Differ Too Much
  • Solutions:
    1. Restart to check
    2. Re-Flash software
    3. Replace part or inverter

• F12: 10min Over Volt

  • Display: Mean Value Within 10min Is Above 10% Of The Rated Grid Voltage
  • Solutions: Change to another standard with a wider protection range under authorization.

• F13: Over Temp Fault

  • Display: The temperature of the internal device exceeds 80℃.
  • Solutions: Happens rarely and can usually continue to be used normally.

• F15: PV Volt High

  • Display: DC Voltage Is Too High Due To Wrong Installation
  • Solutions:
    1. Correct The Installation (Remove Panels)
    2. Re-Flash Software
    3. Replace Part Or Inverter

• F17: Grid Volt Fault

  • Display: Grid Voltage Detection Within A Period Is Anomalous
  • Solutions: Change the grid voltage protection range.

• F18: Isolation Fault

  • Display: Impedance To Ground Between Battery Positive and Negative Is Less Than 2 MΩ
  • Solutions:
    1. Remove this Fault
    2. Change to another standard with a wider protection range under authorization.

• F19: Current DC Offset

  • Display: A Phase Current Waveform Detected Is Larger Deviation
  • Solutions: Change to another standard with a wider protection range under authorization.

• F21 & F24: PV2/PV1 Over Current

  • Display: The input current of PV2/PV1 is over the rated value. Possible hardware issue.
  • Solutions:
    1. Restart the inverter
    2. If the problem persists, please replace the inverter.

• F25: Relay Fault

  • Display: General error at inverter start time, possibly due to relay damage.
  • Solutions: If the problem persists, please replace the inverter.

• F27: Inv Over Current

  • Display: The inverter current is over the rated value.
  • Solutions:
    1. Restart the inverter to check
    2. If it doesn't return to normal, please replace the inverter.

• F29: Grid Freq Fault

  • Display: The grid frequency exceeds the set range.
  • Solutions: Change to another standard with a wider protection range under authorization.

Models: OMNIK SOL
2k-TL3-S-NS
2.5k-TL3-S-NS
3k-TL3-S-NS
3k-TL3-NS
3.68k-TL3-NS
4k-TL3-NS
4.6k-TL3-NS
5k-TL3-NS
6k-TL3-NS
5k-TL3-TH-NS
6k-TL3-TH-NS
8k-TL3-NS
10k-TL3-NS
13k-TL3-NS
16k-TL3-NS
1k-TL-M
1.5k-TL-M
4K-TL2-TH
5K-TL2-TH
6K-TL2-TH
4K-TL2
5K-TL2
6K-TL2
15k-TL2 17k-TL2 20k-TL2
13k-TL
17k-TL
20k-TL
5K-TL2-3P
8K-TL2
9K-TL2
10K-TL2