Troubleshooting Guide for Solar PV Inverter
Resumable Faults
Permanent Faults
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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
- Disconnect ALL PV (+) or PV (-).
- Wait a few seconds.
- After the LCD switches off, reconnect and check again.
- If problems remain, call local service.
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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
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F00: GFCI Device Fault
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Display: Inverter GFCI Detector Issue
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Solutions:
- Restart to check
- Re-Flash software
- Replace part or inverter
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F01: Island Fault
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Display: No Grid or Local Grid Frequency Isn't Stable
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Solutions: Restart to check after the local grid is stable. Close the protection from the inverter.
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F03: PV Volt Low
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Display: DC voltage is below 150V
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Solutions:
- Correct the installation (Add More Panels)
- Re-Flash software
- Replace part or inverter
-
F04: Consistency Fault
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Display: The Data Detected By Master And Slave CPU Is Inconsistent
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Solutions:
- Restart to check
- Re-Flash software
- Replace part or inverter
-
F05 & F06: Bus Volt Low/High
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Display: Test Value Wrongly, Software Issue, Hardware Broken
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Solutions:
- Restart to check
- Re-Flash software
- Replace part or inverter
-
F09: No Utility
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Display: No AC voltage
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Solutions: Measure AC voltage with a multimeter. Check the wires in the AC cable.
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F10: Ground Current Fault
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Display: Poor grounding, often occurs on rainy days.
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Solutions:
- Ensure the inverter is well-grounded.
- Change to another standard with a wider protection range under authorization.
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F11: Bus Unbalance
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Display: Inverter Control Circuit Problem, Values Of Two Rows Bus Capacitance Differ Too Much
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Solutions:
- Restart to check
- Re-Flash software
- Replace part or inverter
-
F12: 10min Over Volt
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Display: Mean Value Within 10min Is Above 10% Of The Rated Grid Voltage
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Solutions: Change to another standard with a wider protection range under authorization.
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F13: Over Temp Fault
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Display: The temperature of the internal device exceeds 80℃.
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Solutions: Happens rarely and can usually continue to be used normally.
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F15: PV Volt High
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Display: DC Voltage Is Too High Due To Wrong Installation
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Solutions:
- Correct The Installation (Remove Panels)
- Re-Flash Software
- Replace Part Or Inverter
-
F17: Grid Volt Fault
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Display: Grid Voltage Detection Within A Period Is Anomalous
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Solutions: Change the grid voltage protection range.
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F18: Isolation Fault
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Display: Impedance To Ground Between Battery Positive and Negative Is Less Than 2 MΩ
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Solutions:
- Remove this Fault
- Change to another standard with a wider protection range under authorization.
-
F19: Current DC Offset
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Display: A Phase Current Waveform Detected Is Larger Deviation
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Solutions: Change to another standard with a wider protection range under authorization.
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F21 & F24: PV2/PV1 Over Current
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Display: The input current of PV2/PV1 is over the rated value. Possible hardware issue.
-
Solutions:
- Restart the inverter
- If the problem persists, please replace the inverter.
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F25: Relay Fault
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Display: General error at inverter start time, possibly due to relay damage.
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Solutions: If the problem persists, please replace the inverter.
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F27: Inv Over Current
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Display: The inverter current is over the rated value.
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Solutions:
- Restart the inverter to check
- If it doesn't return to normal, please replace the inverter.
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F29: Grid Freq Fault
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Display: The grid frequency exceeds the set range.
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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