The Eaton ETN2000 solar inverter can develop a number of different faults and when a fault is present an error message will be displayed on the screen and usually the fault light will be lit. Below is a list of error messages, explanations on the error or fault and a list of possible actions to take to resolve the issue.
View the Eaton ETN2000 Solar Inverter manual here.
Fault | Display | Possible actions |
| System Fault | Ground I Fault | 1. The ground current is too high. 2. Unplug the inputs from the PV generator and check the peripheral AC system 3. After the cause is cleared, re-plug the PV panel and check PV-Inverter status. 4. If the problem persists please call service. |
| Grid Fault | 1. Wait for 5 minutes, if the grid returns to normal, PV-Inverter automatically restarts. 2. Make sure grid voltage and frequency meet the specifications 3. If the problem persists please call service | |
| No Utility | 1. Grid is not connected. 2. Check grid connection cables. 3. Check grid usability. | |
| Inverter Failure | PV over Voltage | 1. Check the open PV voltage, see if it is greater than or too close to 500VDC 2. If PV voltage is less than 500VDC, and the problem still occurs, please call local service |
| Consistent Fault | 1. Disconnect PV (+) or PV (-) from the input, restart the PV-Inverter 2. If it does not work, call service | |
| Over Temperature | 1. The internal temperature is higher than specified normal value 2. Find a way to reduce the ambient temperature. 3. Or move the inverter to a cooler environment 4. If it is not effective, call local service | |
| Relay Failure DC INJ High EEPROM Failure SCI Failure High DC Bus Low DC Bus Ref 2.5V Fault DC Sensor Fault GFCI Failure | 1. Disconnect ALL PV (+) or PV (-) 2. Wait for few seconds 3. After the LCD switches off, reconnect and check again 4. If the message reappears, please contact Eaton. |
Here are some error messages and descriptions that you may see on the Eaton ETN2000 Solar Inverter display screen.
Operating conditions | Display | Description |
| System Fault | ||
| Isolation failure | Isolation fault | Earth fault of the PV-panels or failure of surge voltage protection |
| GFCI active | Ground I fault | Leakage current detected from ground conductor is too high |
| Grid failure | Grid fault | Grid measured data is beyond the specification (voltage & frequency) |
| No utility | No Utility | Utility is not available |
| Input voltage too high | PV over voltage | Input voltage is higher than the maximum input voltage |
| Inverter Fault | ||
| Consistent failure | Consistent Fault | The readings of 2 microprocessors are not consistent. It could be caused by CPU and/or other circuits do not function well. |
| Temperature too high | Over temperature | The internal temperature of inverter higher than normal value |
| Output relay failure | Relay Failure | The relay between inverter and functional |
| Output DC injection too high | DC INJ High | Output DC injection is higher than expected |
| EEPROM problem | EEPROM Failure | EEPROM inside has data access problem |
| Communication failure between microprocessors Communication failure | SCI Failure | The communication between MCU inside is abnormal |
| DC bus voltage is too high | High DC Bus | The DC BUS voltage is higher than expected |
| DC bus voltage is too low | Low DC Bus | The DC BUS voltage is lower than expected |
| 2.5V reference voltage inside problem | Ref 2.5V Fault | The 2.5V reference inside are abnormal |
| Output DC sensor abnormal | DC Sensor Fault | Detection of DC output sensor is abnormal |
| GFCI detection problem | GFCI Failure | The GFCI detection circuit is abnormal |
For more details checkout the Eaton ETN2000 Solar Inverter manual’s Troubleshooting section. If you still have an issue after following the recommendations listed above we recommend that you contact a professional solar power expert. If you’re in the Gold Coast or Brisbane area contact Gold Coast Power Solutions here and we will be in touch to provide you with further assistance.
View the Eaton ETN2000 Solar Inverter manual here.
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