Why is my SOLIS Inverter showing an OV-DC error?
The OV-DC error on your SOLIS Inverter indicates that the inverter detects high DC voltage. To troubleshoot, with the DC switch OFF, check the DC voltage at the inverter test points. If the DC voltage is high, check the string configuration. With the DC switch ON, check the LCD reading, as there may be a bad measurement circuit. If the issue persists, replace the inverter.
What to do if my SOLIS Solis-75K-5G-US Inverter screen is off with DC applied?
If your SOLIS Inverter screen is off with DC applied, it indicates internal damage to the inverter. Do not turn off the DC switches as it may damage the inverter. Please wait for sunset and confirm the string current is less than 0.5A with a clip-on ammeter and then turn off the DC switch. String current above 0.5A is under load. Also check the inverters’ PV string polarity, if there are strings reversely connected wait for the night when the solar irradiance is low and the PV string current down below 0.5A. Turn off the two DC switches and fix the polarity issue. If string polarity is correct, please confirm that all the PV strings have the same number of modules. If not, please modify the system configuration.
How to resolve grid interference with SOLIS Solis-75K-5G-US?
If the SOLIS Inverter is experiencing grid interference, try restarting the inverter. If the problem continues, consider changing the power board.
What to do if SOLIS Solis-75K-5G-US Inverter LCD has no power?
If your SOLIS Inverter's LCD has no power, check the PV input connections. Also, verify the DC input voltage (single phase >120V, three phase >350V) and ensure that the PV+/- connections are not reversed.
What to do if my SOLIS Solis-75K-5G-US shows 'Over DC voltage'?
If your SOLIS Inverter is showing an 'Over DC voltage' error, reduce the number of modules in series.
Why my SOLIS Solis-75K-5G-US can not start-up?
If your SOLIS Inverter cannot start up, check if the connectors on the main board or power board are securely fixed. Also, check if the DSP connector to the power board is properly connected.
Why is the screen blank on my SOLIS Inverter?
If your SOLIS Inverter screen is blank, it could be due to low or missing input voltage, reversed polarity, or a damaged main board. To troubleshoot, with the DC switch OFF, test the PV connections, check the polarity, and ensure the voltage is greater than 200V. With the DC Switch ON, check the voltage again to ensure it's greater than 200V. If the DC voltage is "0", replace the inverter.
What should I do if my SOLIS Solis-75K-5G-US Inverter displays OV-BUS error?
If your SOLIS Inverter is displaying an OV-BUS error, it indicates that the inverter detects high DC voltage on the internal bus. Measure the DC and AC voltages and compare them with the LCD readings. If the issue persists, the inverter may need to be replaced due to internal damage or a wire that came loose during shipping.
What does GRID-INTF mean on my SOLIS Solis-75K-5G-US?
The GRID-INTF error on your SOLIS Inverter indicates that the inverter detects grid instability and a high internal fault current. To troubleshoot, with the DC switch OFF, measure the AC voltage and test the AC line for THD. With the DC switch ON, test the AC line for THD. If you have multiple inverters, try turning one off. You may need an impedance matching adjustment or box. Internal damage or a wire that came loose during shipping could also be the cause.
What to do if SOLIS Inverter is internally damaged?
If the SOLIS Inverter is internally damaged, do not turn off the DC switches, as this will further damage the inverter. Wait for the solar irradiance to reduce and confirm the string current is less than 0.5A with a clip-on ammeter before turning off the DC switches. Note that damages due to wrong operations are not covered under warranty.
General| Model | Solis-75K-5G-US |
|---|---|
| Rated Output Power | 75 kW |
| Max. DC Input Power | 112.5 kW |
| Max. Input Voltage | 1100V |
| Input Voltage Range | 200 V - 1000 V |
| Nominal AC Output Power | 75 kW |
| Max. AC Apparent Power | 82.5kVA |
| Nominal AC Voltage | 480 V |
| Max. Output Current | 90 A |
| Max Efficiency | 98.7% |
| Frequency | 60 Hz |
| Operating Temperature Range | -25°C to 60°C |
| Humidity Range | 0% - 100% |
| Communication | RS485, Ethernet |
| Protection Level | IP66 |
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