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Sometimes, the PV system does not work normally; we recommend the following solutions for average troubleshooting. This can help the technician to understand the problem and take a proper action.
| ? | LCD display | Possible actions |
|---|---|---|
| Resumable Fault | Isolation Fault | 1. Check the impedance between PV (+)&PV(-) and the inverter is earthed. The impedance must be greater than 2MΩ 2. Check whether the AC end has contacted with earth |
| Ground Fault | 1. The ground current is too high 2. After cutting off the AC end connection, unplug the inputs from the PV generator and check the peripheral AC system. 3. After the cause is cleared, re-plug the PV generator and AC connection, and check PV-Inverter status. |
|
| Grid Fault Fac Over Range Vac Over Range |
1. Wait for a moment, if the grid returns to normal, PV-Inverter automatically restarts. 2. Make sure grid voltage and frequency meet the specifications. |
|
| Utility Loss | 1. Grid is not connected. 2. Check grid connection cables. 3. Check grid usability. 4. If grid is ok, the problem persists, maybe the fuse in the inverter is open, please call the service. |
|
| Over Temperature | 1. The internal temperature is higher than specified normal value. 2. Find a way to reduce the ambient temperature or move the inverter to cooler environment. |
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Sometimes, the PV system does not work normally; we recommend the following solutions for average troubleshooting. This can help the technician to understand the problem and take a proper action.
| ? | LCD display | Possible actions |
|---|---|---|
| Clearable Fault | Isolation Fault | 1. Check the impedance between PV (+)&PV(-) and the inverter is earthed. The impedance must be greater than 2MΩ. 2. Check whether the AC end has contacted with earth. |
| Ground Current Fault | 1. The ground current is too high. 2. After cutting off the AC end connection, unplug the inputs from the PV generator and check the peripheral AC system. 3. After the cause is cleared, re-plug the PV generator and AC connection, and check PV-Inverter status. |
|
| Grid Fault Fac Over Range Vac Over Range |
1. Wait for a moment, if the grid returns to normal, PV-Inverter automatically restarts. 2. Make sure grid voltage and frequency meet the specifications. |
|
| Utility Loss | 1. Grid is not connected. 2. Check grid connection cables. 3. Check grid usability. 4. If grid is ok, the problem persists, maybe the fuse in the inverter is open, please call the service. |
|
| Over Temperature | 1. The internal temperature is higher than specified normal value. 2. Find a way to reduce the ambient temperature or move the inverter to cooler environment. |
|
| PV over Voltage | 1. Check the open PV DC voltage, and see if it is greater than or too close to 1000VDC. 2. If PV DC voltage is less than 1000VDC, and the problem still occurs, please call local service. |
|
| Permanent Fault | Consistent Fault | Disconnect PV (+) or PV(-) from the input, restart the inverter. |
| Relay-Check Fail | 1. Disconnect all PV (+) or PV (-). 2. Wait for a few seconds. 3. After the LCD switches off, reconnect and check again. 4. If the problem remains, please call local service. |
|
| DC INJ High | ||
| EEPROM R/W Fail | ||
| SCI Failure | ||
| AC HCT Fault | ||
| GFCI Failure |
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Sometimes, the PV system does not work normally; we recommend the following solutions for average troubleshooting. This can help the technician to understand the problem and take a proper action.
| ? | LCD display | Possible actions |
|---|---|---|
| Clearable Fault | Isolation Fault | 1.Check the impedance between PV (+)&PV(-) and the inverter is earthed. The impedance must be greater than 2MΩ. 2.Check whether the AC end has contacted with earth. |
| Ground Current Fault | 1. The ground current is too high. 2. After cutting off the AC end connection, unplug the inputs from the PV generator and check the peripheral AC system. 3. After the cause is cleared, re-plug the PV generator and AC connection, and check PV-Inverter status. |
|
| Grid Fault Fac Over Range Vac Over Range |
1. Wait for a moment, if the grid returns to normal, PV-Inverter automatically restarts. 2. Make sure grid voltage and frequency meet the specifications. |
|
| Utility Loss | 1. Grid is not connected. 2. Check grid connection cables. 3. Check grid usability. 4. If grid is ok, the problem persists, maybe the fuse in the inverter is open, please call the service. |
|
| Over Temperature | 1. The internal temperature is higher than specified normal value. 2. Find a way to reduce the ambient temperature or move the inverter to cooler environment. |
|
| PV over Voltage | 1. Check the open PV DC voltage, and see if it is greater than or too close to 1000VDC. 2. If PV DC voltage is less than 1000VDC, and the problem still occurs, please call local service. |
|
| Permanent Fault | Consistent Fault | Disconnect PV (+) or PV(-) from the input, restart the inverter. |
| Relay-Check Fail | 1. Disconnect all PV (+) or PV (-). 2. Wait for a few seconds. 3. After the LCD switches off, reconnect and check again. 4. If the problem remains, please call local service. |
|
| DC INJ High | ||
| EEPROM R/W Fail | ||
| SCI Failure | ||
| AC HCT Fault | ||
| GFCI Failure |
If the PV DC voltage is higher than 250V, while the inverter still doesn’t work, please call the local service.
During periods of little or no sunlight, the inverter may continuously start up and shut down. This is due to insufficient power generated and it is normal working state. If sunlight strengthens or energy increase to support the inverter’s startup, while the problems remain, please call service.
Except the frequent problems as above, if you still have any problems which cannot be solved, please contact us and we will offer the best services as we can.