Solis 3-Phase Inverter (25-50 kW)

Ginlong Technologies Co., Ltd.

No. 57 Jintong Road, Binhai Industrial Park, Xiangshan, Ningbo, Zhejiang, 315712, P.R.China.

Tel.: +86 (0)574 6578 1806

Fax: +86 (0) 574 6578 1606

Email: info@ginlong.com

Web: www.ginlong.com

In case of any discrepancies with this user manual, please consider the appearance and specifications of the actual equipment.

If you encounter any problems with the inverter, please find the inverter's serial number and contact us. We will respond as soon as possible.

Certifications: CE, TÜV Rheinland CERTIFIED

Version: 1.5

Table of Contents

• 1. Introduction ...........................................................................................................2
• 1.1 Product Description................................................................................................................ 2
• 1.2 Packaging..................................................................................................................... 3
• 2. Safety Instructions.....................................................................................................................4
• 2.1 Safety Symbols.................................................................................................................... 4
• 2.2 General Safety Instructions......................................................................................................... 4
• 2.3 Usage Notes................................................................................................................... 5
• 3. General Information..................................................................................................................6
• 3.1 Front Panel Display...................................................................................................................... 6
• 3.2 Status LED Indicators................................................................................................................... 6
• 3.3 Keypad.................................................................................................................................. 6
• 3.4 LCD Display....................................................................................................................... 6
• 4. Handling and Storage............................................................................................................................7
• 4.1 Handling the Product.................................................................................................................................. 7
• 4.2 Product Storage...................................................................................................................................... 8
• 5. Installation..................................................................................................................9
• 5.1 Choosing a Location for the Inverter........................................................................................................................ 9
• 5.2 Mounting the Rear Hanging Plate................................................................................................................... 11
• 5.3 Electrical Connections......................................................................................................................... 13
• 6. Startup and Shutdown..................................................................................................................24
• 6.1 Inverter Startup...................................................................................................................... 24
• 6.2 Inverter Shutdown.................................................................................................................................. 24
• 7. Operation.............................................................................................................................25
• 7.1 Main Menu.......................................................................................................................................... 25
• 7.2 Information.............................................................................................................................................. 25
• 7.3 Settings......................................................................................................................................... 27
• 7.4 Additional Information............................................................................................................................ 28
• 7.5 Advanced Settings....................................................................................................................... 31
• 7.6 AFCI Function........................................................................................................................................... 37
• 8. Maintenance.........................................................................................................................38
• 9. Troubleshooting......................................................................................................................38
• 10. Technical Specifications............................................................................................................................41

1. Introduction

1.1 Product Description

The Solis 5G three-phase inverter is suitable for large-scale photovoltaic array projects. The 5G three-phase series includes 7 models: Solis-25K-5G, Solis-30K-5G, Solis-33K-5G, Solis-36K-5G, Solis-40K-5G, Solis-40K-HV-5G, Solis-50K-HV-5G.

1.2 Packaging

Upon receiving the inverter, please ensure all listed parts are present:

• 1 Inverter
• 1 Mounting plate
• 4 Cross screws
• 1 RJ45 connector (for UK and Belgium)
• 2 Hex screws
• DC connectors: 6 pcs (25-33K), 8 pcs (36-50K)
• 1 AC terminal cover
• 1 User Manual

If any item is missing, please contact your local Solis dealer.

2. Safety Instructions

2.1 Safety Symbols

This manual uses safety symbols to highlight potential risks and important safety information:

• WARNING: Indicates a hazardous situation which, if not avoided, could result in death or serious injury.
• NOTE: Indicates important safety instructions that, if not followed, could result in damage or destruction of the inverter.
• CAUTION: Indicates important safety instructions that, if not followed, could result in electric shock.
• CAUTION: Indicates instructions related to safety that, if not followed, could result in burns.

2.2 General Safety Instructions

• WARNING: Do not connect the positive (+) or negative (-) terminal of the PV array to ground; this may cause serious damage to the inverter.
• WARNING: Electrical installation must be performed in accordance with local and national electrical safety regulations.
• WARNING: To reduce the risk of fire, overcurrent protection devices (OCPD) are required for circuits connected to the inverter. DC OCPD must be installed according to local requirements. All PV sources and output circuit terminals must have isolators that comply with Part 2 of Article 690 of the NEC. All Solis three-phase inverters are equipped with a built-in DC switch.
• CAUTION: Risk of electric shock. Do not remove the cover. The unit contains no user-serviceable parts. For servicing, refer to authorized and qualified service technicians.

2.3 Usage Notes

The inverter is designed in accordance with current safety regulations. Use the inverter in installations that comply only with the following specifications:

1. Requires permanent installation.
2. Electrical installation must comply with all applicable codes and standards.
3. The inverter must be installed according to the instructions in this manual.
4. The inverter must be installed according to correct technical conditions.
5. Before loading the inverter, ensure the DC switch of the solar array is turned ON before closing the AC main switch. To stop the inverter, turn OFF the AC main switch before turning OFF the DC switch of the solar array.

3. General Information

3.1 Front Panel Display

3.2 Status LED Indicators

3.3 Keypad

The inverter's front panel has four keys (from left to right): ESC, UP, DOWN, and ENTER. The keypad is used for:

• Scrolling through displayed options (UP and DOWN keys); accessing for modification
• Configurable settings (ESC and ENTER keys).

3.4 LCD Display

A two-line LCD display is located on the front panel of the inverter and shows the following information:

• Inverter status and operating data;
• Service messages for the operator;
• Alarm and error notifications.

4. Handling and Storage

4.1 Handling the Product

Refer to the instructions below before handling the inverter:

1. The cutouts at the bottom of the product packaging are marked with red circles. Press the cutouts to form carrying handles for the inverter (see Figure 4.1).
2. Open the box, then grasp the inverter from both sides through the area marked with a dashed line (see Figure 4.2).

NOTE: Be careful when lifting the inverter. The unit weighs approximately 45 kg.

4.2 Product Storage

If the inverter will not be installed immediately, follow these storage and environmental guidelines:

• Use the original packaging box for the inverter. Place the unit and a desiccant in the box and seal it with tape.
• Store the inverter(s) in a clean, dry, dust-free, and dirt-free location.
• Storage temperature should be between -40°C and 70°C, and humidity should be between 0% and 100% without condensation.
• Stack no more than three (3) inverters.
• Keep the box away from corrosive materials to avoid damage to the inverter casing.
• Regularly inspect the packaging. If the packaging is damaged (wet, pest-infested, etc.), repack the inverter immediately.
• Store the inverter(s) on a flat surface, not tilted or inverted.
• After prolonged storage, the inverter must be thoroughly inspected and tested by an authorized service technician or technical personnel before use.
• Restarting after prolonged disuse requires equipment inspection, and in some cases, removal of oxidation and dust accumulated inside the equipment may be necessary.

5. Installation

5.1 Choosing a Location for the Inverter

When choosing a location for the inverter, consider the following criteria:

WARNING: Fire Hazard

Despite careful design, electrical equipment can cause fires.

• Do not install the inverter in locations where flammable materials or gases are present.
• Do not install the inverter in potentially explosive environments.
• Do not install in small enclosed spaces where air cannot circulate freely. To prevent overheating, ensure that airflow around the inverter is not blocked.
• Exposure to direct sunlight will increase the inverter's operating temperature and may lead to output power limitation. Ginlong recommends installing the inverter in a way that avoids direct sunlight or rain.
• To prevent overheating, consider the ambient temperature when selecting the inverter's installation location. Ginlong recommends using a shade to minimize the impact of direct sunlight when the ambient temperature exceeds 104°F/40°C.

NOTE: Do not place other objects on top of the inverter.

5.2 Mounting the Rear Hanging Plate

Follow the instructions below to mount the inverter:

• Install on a vertical surface or structure capable of supporting the weight.
• Install the inverter vertically. If the inverter cannot be installed vertically, it may be tilted backward by 15 degrees from the vertical.
• If multiple inverters are to be installed, maintain a distance of at least 500 mm between each inverter or between the inverter and other objects. The bottom of the inverter should be at least 500 mm from the ground or floor. See Figure 5.2.
• Consider the visibility of the status LED indicators and the LCD screen.

Follow the steps below to install the inverter:

1. Locate the expansion bolt holes on the mounting bracket (M10 * 70) in Figure 5.4, using a percussion drill with a 10 mm drill bit vertically into the wall. The drill hole must be vertical in the wall. The depth of all drill holes should be 60 mm.
2. The mounting bracket must be positioned horizontally. Ensure the mounting holes (in Figure 5.4) are marked correctly. Drill holes in the wall according to your markings.
3. Secure the bracket to the wall using appropriate screws.

5.3 Electrical Connections

WARNING: The inverter must be installed vertically.

If the installation location is elevated, the inverter cannot be installed directly on the mounting plate; use a lifting rope through the two lifting holes. (The rope must be rated for the product's weight).

The inverter has quick-connect terminals, so the top cover should not be opened during electrical connection. The meaning of the symbols is located at the bottom of the inverter, as shown in Table 3.1. All electrical connections must comply with local or national standards.

Follow these steps to make the electrical connections for the inverter:

1. Turn off the main AC power switch.
2. Turn off the DC switch.
3. Connect the inverter to the grid.
4. Attach the input connector to the inverter.

5.3.1 Grounding

Solis recommends two grounding methods: via the grid terminal connector and connecting the external heatsink.

Connect the AC grounding cable as described in section 5.3.3. When connecting the heatsink grounding cable, follow these steps:

1. Prepare the grounding cable: It is recommended to use an external copper cable with a diameter of ≥ 16 mm².
2. Prepare the OT terminal: M6.

NOTE: B (stripping length) should be 2-3 mm longer than A (crimping area of the OT terminal).

NOTE: After crimping the terminal to the wire, inspect the connection and ensure the terminal is firmly pressed against the wire.

5. Remove the screw from the heatsink grounding point.

6. Connect the grounding cable to the heatsink grounding point and tighten the grounding screw; the torque should be 3-4 N·m (see Figure 5.14).

NOTE: For improved anti-corrosion performance, apply silicone or protective paint after installing the grounding cable.

5.3.2 Connecting the PV Array to the Inverter

Before connecting the inverter, ensure that the open-circuit voltage of the PV array is within the inverter's range.

Before connecting, ensure that the polarity of the PV array output voltage matches the "DC+" and "DC-" symbols.

CAUTION: If the DC inputs are accidentally connected with reverse polarity, or if the inverter is faulty or not operating correctly, do NOT turn off the DC switch, as this may damage the inverter and even cause a fire.

Correct procedure:

• Use a clamp ammeter to measure the DC line current.
• If it exceeds 0.5 A, please wait for the solar irradiation to decrease and the current to drop to 0.5 A.
• Only after the current drops to at least 0.5 A, can you turn off the DC switches and disconnect the PV array lines.

Note that any damage caused by incorrect operation is not covered by the device warranty.

Use appropriate DC cable for the PV system.

Follow these steps to assemble the DC connectors:

1. Strip the DC wire to approximately 7 mm, remove the cover nut of the connector (see Figure 5.17).
2. Insert the wire into the cover nut and the contact pin (see Figure 5.18).
3. Crimp the contact pin to the wire using a proper crimping tool (see Figure 5.19).
4. Insert the metal connector into the top of the connector and tighten the nut with a torque of 2.5-3 N·m (see Figure 5.20).

5.3.3 Connecting the Inverter to the Grid

For all AC connections, use a cable with a diameter of 10-35 mm². Ensure the cable resistance is below 1.5 Ohm.

NOTE: For reliable connection, it is recommended that customers select appropriate Euro-type connectors based on the wiring specifications for terminal connection.

Follow these steps to assemble the AC terminal connections:

1. Strip approximately 80 mm of the AC cable insulation, then strip the end of each wire (as shown in Figure 5.23).
2. Strip the wire insulation along the crimping area of the OT terminal, then use a hydraulic crimping tool to crimp the terminal. The crimped part of the terminal must be insulated with heat-shrink tubing or electrical tape.
3. Leave the AC switch disconnected so it cannot be closed unexpectedly.

NOTE: S2 (stripping length) should be the same as S1 (crimping area of the AC cable terminal).

4. Unscrew the 4 screws on the inverter's junction box and remove the junction box cover.

5. Insert the cable through the nut, sheath, and AC cover. Connect the cable to the AC terminal block in sequence, using a socket wrench. Tighten the screws on the terminal block. The torque is 3~4 N·m (as shown in Figure 5.24).

5.3.4 Connecting the Inverter Monitoring Device

The inverter can be monitored via Wi-Fi or GPRS. All Solis communication devices are optional (Fig. 5.25). Refer to the Solis monitoring device installation manual for connection instructions.

System for Monitoring Multiple Inverters

If multiple inverters are installed, they can be monitored using RS-485 daisy-chain configuration. (See Figure 5.26).

5.3.4.1 RS485 Connection

Install the RS485 connection cables through the terminal block, as shown in Figure 5.27. The recommended cable cross-sectional area is 0.2-1.5 mm², outer cable diameter is 5-10 mm, and cable length should not exceed 3m.

Terminal Block Connection

1. Use a network cable stripping tool to strip the insulation layer from the communication cables to a certain length, as shown in Figure 5.28.
2. Unscrew the "COM2" and "COM3" covers on the inverter, as shown in Figure 5.29.

3. Insert the communication cables into the "COM2" and "COM3" ports.
4. Secure the cables to the connection terminals included in the accessory kit.
5. Connect the connection terminals to the terminal block in the inverter and press to lock. After installing the cable, remember to secure the AC terminal cover screws for water protection.

5.3.5 Max Overcurrent Protection Device (OCPD)

For protecting the AC connection conductors, Solis recommends installing circuit breakers that provide overcurrent protection. The following table specifies the OCPD ratings for Solis 25-50 kW three-phase inverters.

5.3.6 Logical Interface Connection (for UK and Belgium)

The logical interface is installed according to local UK and Belgium regulations and can be controlled by a simple switch or contactor. When the switch is closed, the inverter can operate normally. When the switch is open, the inverter will reduce its output power to zero within 5 seconds. Contacts 5 and 6 of the RJ45 terminal are used for connecting the logical interface. Follow the steps below to assemble the RJ45 connector.

Insert the network cable into the RJ45 connection terminal (as shown in Figure 5.30).

2. Use a network cable stripping tool to strip the insulation layer from the connection cable. According to the standard wire sequence in Figure 4.12, connect the wire to the RJ45 plug, and then use a network cable crimping tool to make it tight.

Connect the RJ45 to the DRM (logical interface).

6. Startup and Shutdown

6.1 Inverter Startup

Follow these steps carefully to start up the inverter:

1. First, turn on the main AC power switch.
2. Turn on the DC switch. If the PV array voltage is higher than the startup voltage, the inverter will initialize. The red LED will light up.
3. When both DC and AC power are supplied to the inverter, it will be ready to generate energy. The inverter will first check its internal parameters and AC network parameters to ensure they are within the allowable range. During this time, the green LED will blink, and the LCD display will show "INITIALIZING".
4. After 30-300 seconds (depending on local requirements), the inverter will start generating power. The green LED will be solid, and the LCD display will show "GENERATING".

WARNING: Do not touch the surface when the inverter is operating. It may be hot and cause burns.

6.2 Inverter Shutdown

To shut down the inverter, strictly follow these steps:

1. Turn off the AC switch.
2. Set the DC switch on the inverter to the "OFF" position.

7. Operation

7.1 Main Menu

The LCD screen alternately displays the inverter's output power and operating status in normal mode (see Figure 7.1). The screen can be scrolled manually by pressing the UP/DOWN keys. Pressing the ENTER key accesses the Main Menu.

The main menu has four submenus (see Figure 7.1):

1. Information
2. Settings
3. Additional Information
4. Advanced Settings

7.2 Information

The Solis 4G three-phase inverter's main menu provides access to operational data and information. Information can be viewed by selecting "Information" in the menu and then scrolling up or down.

7.2.1 Screen Lock

Pressing the ESC key returns to the main menu. Pressing the ENTER keys locks (Fig. 7.2 (a)) or unlocks (Fig. 7.2 (b)) the screen.

7.3 Settings

After selecting the "Settings" menu, the following submenus are displayed:

1. Setting Time
2. Setting Address

7.3.1 Setting Time

This function allows you to set the time and date. After selecting this function, the LCD display will show the screen as in Figure 7.3.

Use the UP/DOWN keys to set the time and date. Press the ENTER key to move from one digit to the next (from left to right). Press the ESC key to save the settings and return to the previous menu.

7.3.2 Setting Address

This function is used to set the address when connecting multiple inverters to three monitors. The address for the Solis three-phase inverter is "01".

Use the UP/DOWN keys to set the address. Press the ENTER key to save the settings. Press the ESC key to cancel changes and return to the previous menu.

7.4 Additional Information (For Service Personnel Only)

NOTE: Access to this area is intended only for authorized and accredited professionals. Enter the "Additional Information" and "Advanced Settings" menus (password required).

Select "Additional Information" from the main menu. The screen will prompt you to enter the password, as shown below:

After entering the correct password, the main menu screen will appear, and you can access the following information:

1. Signal messages
2. Operation messages
3. Version
4. Daily energy
5. Monthly energy
6. Yearly energy
7. Daily records
8. Communication data
9. Warning message

The screen can be scrolled manually by pressing the UP/DOWN keys. Pressing the ENTER key accesses the submenu. Press the ESC key to return to the main menu.

7.4.1 Signal Message

The display shows the last 100 signal messages (see Figure 7.6). Screens can be scrolled manually by pressing the UP/DOWN keys. Press the ESC key to return to the previous menu.

7.4.2 Operation Message

This function is for maintenance personnel to obtain operational messages, such as internal temperature, standard number, etc. Screens can be scrolled manually by pressing the UP/DOWN keys.

7.4.3 Version

The screen displays the inverter model version. Pressing UP and DOWN simultaneously will show the software version (see Figure 7.7).

7.4.4 Daily Energy

This function is for checking energy generation on a selected day.

Press the DOWN key to move the cursor to the day, month, and year, then press the UP key to change the digit. Press Enter after setting the date.

Press the UP/DOWN keys to scroll between dates.

7.4.5 Monthly Energy

This function is for checking energy generation for a selected month.

Press the DOWN key to move the cursor to the day and year, then press the UP key to change the digit. Press Enter after setting the date.

Press the UP/DOWN keys to scroll between dates.

7.4.6 Yearly Energy

This function is for checking energy generation for a selected year.

Press the DOWN key to move the cursor to the day and year, then press the UP key to change the digit. Press Enter after setting the date.

Press the UP/DOWN keys to scroll between dates.

7.4.7 Daily Records

The screen displays the history of parameter changes. For authorized personnel only.

7.4.8 Communication Data

The screen displays internal inverter data (see Figure 7.14), which is intended for authorized personnel only.

7.4.9 Warning Message

The screen displays warning messages. Screens can be scrolled manually by pressing the UP/DOWN keys. Press the ESC key to return to the previous menu.

7.5 Advanced Settings

This section is for service personnel only.

Select "Additional Information" from the main menu to access the following options:

1. Select Standard
2. Grid ON/OFF
3. Clear Energy
4. Reset Password
5. Power Management
6. Energy Calibration
7. Special Settings
8. STD Mode
9. Restore Settings
10. HMI Update
11. External EPM Setting
12. HMI Reboot
13. Debugging Parameter
14. DSP Update
15. Compensation Setting
16. I/V Curve

7.5.1 Select Standard

This function is used to select the grid reference standard (see Figure 7.16).

Use the UP/DOWN keys to scroll through standards (G59/3, UL-480V, VDE0126, AS4777-15, AS4777-02, CQC380A, ENEL, UL-380V, MEX-CFE, C10/11, and "User-Def" function). Press ENTER to confirm the setting. Press ESC to cancel changes and return to the previous menu.

NOTE: For different countries, the grid standard must be set according to local requirements. If in doubt, contact Solis technical services for detailed information.

If you select the "User-Def" menu, you will access the following submenu (see Fig. 7.17):

NOTE: The "User-Def" function can only be used by a service engineer with permission from the local power provider.

7.5.2 Grid ON/OFF

This function is used to start or stop energy generation by the Solis three-phase inverter (see Figure 7.18).

Screens can be scrolled manually by pressing the UP/DOWN keys. Press ENTER to save the setting. Press ESC to return to the previous menu.

7.5.3 Clear Energy

The "Clear Energy" function can reset the inverter's generation history.

These two functions should only be used by service personnel. Incorrect use will prevent the inverter from operating normally.

7.5.4 Reset Password

This function is used to set a new password for the "Additional Information" and "Advanced Settings" menus (see Figure 7.19).

Enter the correct password before setting a new password. Press the DOWN key to move the cursor; press the UP key to change the value. Press ENTER to perform the setting.

Press the ESC key to return to the previous menu.

7.5.5 Power Management

Active and reactive power can be set using the power setting button. This submenu has 5 items:

1. Output Power Setting
2. Reactive Power Setting
3. Out_P with Recovery
4. Rea_P with Recovery
5. PF Curve Selection

This function should only be used by maintenance personnel. Incorrect operation will prevent the inverter from reaching its maximum output power.

7.5.6 Energy Calibration

Maintenance or replacement may clear or set a different value for total energy. Using this function allows the user to restore the previous total energy value. If the website is used for monitoring, the data will be automatically synchronized with this parameter (see Figure 7.20).

Press the DOWN key to move the cursor; press the UP key to change the value. Press ENTER to perform the setting. Press ESC to return to the previous menu.

7.5.7 Special Settings

This function should only be used by maintenance personnel. Incorrect operation will prevent the inverter from reaching its maximum output power.

7.5.8 STD Mode Settings

There are 5 settings for STD. Mode settings:

1. Operating Mode Setting
2. Nominal Power Limit
3. Discount Rate Setting
4. 10-minute Voltage Setting
5. Power Priority
6. Initial Settings

This function should only be used by maintenance personnel. Incorrect operation will prevent the inverter from reaching its maximum output power.

7.5.9 Restore Settings

The initial settings submenu has 5 items. Restoring settings returns all items in the special settings (7.5.7) to their default values. The screen will display the following:

Press Enter to save the settings after disconnecting the grid. Press ESC to return to the previous setting.

7.5.10 HMI Update

This function is used to update the LCD program.

This function should only be used by maintenance personnel. Incorrect operation will prevent the inverter from reaching its maximum output power.

7.5.11 External EPM Setting

This function is enabled when the EPM is external.

7.5.12 HMI Reboot

This function is used to reboot the HMI.

This function should only be used by maintenance personnel. Incorrect operation will prevent the inverter from reaching its maximum output power.

7.5.13 Debugging Parameter

This function is intended for manufacturer's authorized personnel only.

7.5.14 DSP Update

This function is used to update the DSP.

This function should only be used by maintenance personnel. Incorrect operation will prevent the inverter from reaching its maximum output power.

7.5.15 Compensation Setting

This function should only be used by maintenance personnel. Incorrect operation will prevent the inverter from reaching its maximum output power.

7.5.16 I/V Curve

This function is used to scan the I/V characteristic curves for each PV array line.

7.5.16.1 I/V Curve Setting

This parameter can set the starting voltage for scanning and the voltage interval. Total of 60 data points can be scanned.

7.5.16.2 I/V Curve Scanning

Press "ENT" to start scanning the I/V curve.

After the scan is complete, "Scan OK" will appear on the screen; then proceed to the next section.

7.6 AFCI Function

Solis inverters have a built-in AFCI function that can detect the presence of an arc fault in the DC circuit and shut down the inverter to prevent fire.

7.6.1 Enabling AFCI Function

The AFCI function can be enabled as follows: Path: Advanced Settings -> Password: 0010 -> Special Settings -> AFCI Settings -> AFCI ON/OFF -> ENABLE.

Warning: The "AFCI Level" setting should only be performed by Solis technical personnel. Do not change the sensitivity, as this may lead to frequent false alarms or errors. Solis is not responsible for any subsequent damage caused by unauthorized changes.

NOTE: This parameter also corresponds to the current status, which can be used to check the ON/OFF status of the AFCI function.

7.6.2 Arc Fault

If an arc fault is detected during normal operation, the inverter will shut down and display the following alarm:

The installer must carefully inspect the DC circuit to ensure all cables are securely fastened.

After the DC problem is corrected, or if the signal is confirmed to be a false alarm, press and hold "ESC" for 3 seconds and wait for the inverter to reboot.

8. Maintenance

The Solis three-phase inverter does not require regular maintenance. However, cleaning the dust from the heatsink will help the inverter dissipate heat and extend its service life. Dust can be removed with a soft brush.

CAUTION: Do not touch the inverter surface during operation. Some parts of the inverter may be hot and cause burns. Turn off the inverter (see Section 6.2) and wait for the cooling period before performing any maintenance or cleaning operations.

If the LCD display and status LEDs become dirty, clean them with a damp cloth.

NOTE: Do not use any solvents, abrasive substances, or corrosive materials to clean the inverter.

9. Troubleshooting

The inverter is designed in accordance with the most important international network standards related to safety and electromagnetic compatibility. Before delivery to the customer, the inverter has undergone several tests to ensure its optimal performance and reliability.

In case of an anomaly, an error message will appear on the LCD screen. In this case, the inverter may stop supplying power to the grid. Error descriptions and corresponding error messages are listed in Table 9.1:

If the inverter displays any error message as listed in Table 9.1, turn off the inverter (instructions on how to stop the inverter operation are in Section 5.2) and wait for 15 minutes before restarting it (instructions on how to start the inverter operation are in Section 5.1). If the error persists, contact your local distributor or service center. Please prepare the following information before contacting us:

• Solis three-phase inverter serial number;
• Name of the three-phase inverter Solis distributor/dealer (if any);
• Installation date.
• Description of the problem (i.e., the error message displayed on the LCD and the status indicator state. Other signals obtained from the "Information" submenu (see Section 6.2) will also be useful.);
• PV array configuration (e.g., number of panels, panel capacity, number of strings, etc.);
• Your contact details.

10. Technical Specifications

Solis-25K-5G

Solis-30K-5G

Solis-33K-5G

Solis-36K-5G

Solis-40K-5G

Solis-40K-HV-5G

Solis-50K-HV-5G