SOLIS 4G series User Manual (English)

Other manuals for SOLIS 4G series

Installation And Operation Manual28 pages

Questions and Answers:

R
Ronnie JimenezSep 9, 2025
What does OV-TEM mean on my SOLIS 4G Inverter, and what should I do?
- C
  Charlene OrtegaSep 9, 2025
  If your SOLIS Inverter shows OV-TEM, it means the inverter detects a high ambient temperature (above 60C). Inspect the installation, checking the heatsink for obstructions and ensuring proper ventilation. Verify that the inverter isn't in direct sunshine. Measure the ambient temperature near the inverter. If the temperature is within the acceptable range, consider replacing the inverter.
J
Jason SilvaAug 25, 2025
What to do if my SOLIS Inverter shows a NO-GRID error?
- C
  crystal17Aug 25, 2025
  If your SOLIS Inverter doesn't detect the grid, first, with the DC switch OFF, check the AC voltage at the inverter test points (L-L, L-GND). Ensure it's not 240VAC. Then, with the DC Switch ON, check the grid standard. If the issue persists, the inverter may need to be replaced.
J
josephashleyAug 25, 2025
What to do if my SOLIS 4G Inverter shows NO-GRID?
- M
  Michael ArroyoAug 26, 2025
  If your SOLIS Inverter displays a NO-GRID error, it means the inverter isn't detecting the grid. To troubleshoot: * With the DC switch OFF, check the AC voltage at the inverter test points (L-L, L-GND). * Verify the LCD reading to rule out a faulty measurement circuit. With the DC switch ON: * Check the grid standard. If the issue persists, the inverter may need to be replaced.
K
Karen MckinneyAug 26, 2025
Why does my SOLIS 4G screen show no information (blank screen)?
- A
  April HillAug 26, 2025
  A blank screen on your SOLIS Inverter could be due to several reasons: * Low or missing input voltage. * Reversed polarity. * A damaged main board. To troubleshoot: * Test with the DC switch OFF: Check PV connections, polarity, and voltage (>120V Single, >350V three). * Test with the DC switch ON: Check voltage (>120V Single, >350V three). If the DC voltage is "0", replace the inverter.
M
Misty BurnsSep 10, 2025
Why does my SOLIS Inverter show GRID-INTF, and how can I fix it?
- L
  Linda HillSep 10, 2025
  If your SOLIS Inverter displays GRID-INTF, it indicates that the inverter detects grid instability or a high internal fault current. 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 again. If you have multiple inverters, try turning one off. Consider an impedance matching adjustment or box. Internal damage or a loose wire in shipping could also be the cause.
M
melanieguerreroSep 5, 2025
How do I fix an AFCI Check FAULT on my SOLIS 4G?
- A
  amanda33Sep 5, 2025
  If your SOLIS Inverter displays 'AFCI Check FAULT', it means the AFCI module has a self-check fault. To resolve this, reset the inverter by turning the DC switch OFF, waiting until all lights/LCD turn off, and then turning the DC switch ON. If the issue continues, the inverter may need to be replaced.
E
emillerSep 4, 2025
What to do if my SOLIS 4G Inverter displays UN-BUS: DC BUS voltage is too low?
- M
  Mr. Edward SmithSep 4, 2025
  If your SOLIS Inverter displays 'UN-BUS: DC BUS voltage is too low', it means the inverter detects a low DC voltage on the internal bus. Measure both DC and AC voltages and compare them with the LCD readings. The inverter may need to be replaced due to internal damage or a wire that came loose during shipping.
Q
qramseySep 4, 2025
How to fix SOLIS 4G Inverter INI-FAULT: Initialization Protection error?
- M
  Melinda BestSep 5, 2025
  If your SOLIS Inverter displays 'INI-FAULT: Initialization Protection', it indicates that the Master and Slave DSP have different values. To resolve this, reset the inverter by turning the DC switch OFF, waiting until all lights/LCD turn off, and then turning the DC switch ON. If the issue persists, the inverter may need to be replaced.
C
Cheryl BerryAug 31, 2025
What to do if SOLIS 4G Inverter screen is OFF with DC applied?
- C
  cherrylisaAug 31, 2025
  If your SOLIS Inverter screen is OFF while DC is applied, it means the inverter is internally damaged. Do not turn off the DC switches, as it will 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 any damages due to wrong operations are not covered in the device warranty.
J
Jennifer BriggsAug 29, 2025
What to do if my SOLIS 4G Inverter displays OV-TEM: Temperature Protection?
- D
  David MartinezAug 29, 2025
  If your SOLIS Inverter displays 'OV-TEM: Temperature Protection', it means the inverter detects a high ambient temperature, specifically above 60C. Inspect the installation, checking the heatsink for any obstructions and ensuring adequate ventilation. Verify that the inverter is not in direct sunshine and measure the ambient temperature near the inverter. If the temperature is within range, the inverter may need to be replaced.

SOLIS 4G series Specifications

General

Frequency	50Hz / 60Hz
Output Power Range	3.0kW - 6.0kW
AC Output Voltage	230V
Communication	RS485
Cooling	Natural Cooling
Operating Temperature Range	-25°C ~ +60°C
Protection	IP65