Victron solar system | Registration-free off-grid setup | 16% return, complete technology, installation and economics

This 36-minute practical video gives you a complete overview of a three-phase Victron off-grid system that does not require grid registration, as well as a grid-parallel configuration.

The Essential Basics for Understanding and Calculating Your Solar System

Optimal Design of Strings, MPPTs and Inverters

6 Solutions for Difficult Roofs, Different Orientations & Shading

How Should the Maximum Input Voltage of an Inverter Be Understood?

Oversizing a Hybrid Inverter – Manufacturers Specify Up to 200%. Is That Possible?

Victron Energy | How Many AC Current Sensors Can Be Connected to a VE.Bus System?

The current maximum is 9 sensors (since Cerbo GX v1.31). Please note that each sensor must be configured separately using an assistant in the Multi or Quattro to which it is wired.

GoodWe | Troubleshooting Hybrid and AC-Coupled Inverters

Troubleshooting Guide

Hybrid Inverters
ET, ET PLUS+, EH, ESA, ES, EM, EHB and ES G2 series
AC-Coupled Inverters
BT, BH, BP, SBP and SBP G2 series

Open the documentation

GoodWe | Lynx F Battery Troubleshooting

Lynx F Battery Troubleshooting

Battery problems can have different causes. Displayed error messages, such as communication errors or standby, are often not specific enough to identify the exact problem immediately.
It is therefore important to know which possible causes should be checked before determining the cause-and-effect relationship. This troubleshooting guide helps by listing the most common problems for each battery type and suggesting possible solutions and settings, with the aim of preventing future problems wherever possible.

Victron Energy | Cerbo GX Failure Immediately After Initial Commissioning

Certain Cerbo GX batches from 2023 have a power-supply design issue that can cause failure in some 48 V systems. In most cases the fault occurs immediately when the device is powered, for example during wiring, when inserting the fuse and/or when switching on the system. A faulty Cerbo can be replaced under warranty. To prevent the problem from recurring, a capacitor must be installed. Please contact support if your system is affected. Current units do not have this issue.

Victron Energy | Color Control GX Shows Error 42 | Hardware Problem

In this case, the device storage is damaged. Please provide the serial number of your device so a warranty case can be opened with Victron. The unit can then be sent to Victron for repair.

Victron Energy | How Much Data Does the Cerbo GX Use?

Data usage depends heavily on the number of connected products and how those products behave and are used. The following measurements are only a guide and come from a system with a Cerbo GX, a Multi, a BMV and an MPPT, with the logging interval set to 15 minutes. If your data plan is expensive, allow some margin.

Data usage per month:

• VRM logging: 15 MB download, 45 MB upload

• Remote support: 22 MB download, 40 MB upload

• Update checks: 8 MB download, 0.3 MB upload (this does not include the update itself)

• Two-way communication: 26 MB download, 48 MB upload

The figures above do not include downloading a Cerbo GX firmware update. Firmware updates of 60 MB are not unusual.

Victron | Solar System | Battery Error Message

Victron Energy | MPPT 450/100 Shows Error 67 | BMS Switched Off

First disconnect the CAN plug to the BMS. Then reset the BMS in the MPPT. The problem should then be resolved. Please contact support if the problem continues.

Victron Energy | MPPT 450/100 Shows Error 200 | DC Voltage Error

Some batches of the MPPT 450/100 have an increased failure rate. Victron therefore offers replacement of affected units, even if error 200 has not yet occurred. Please provide the serial number of your device so it can be checked whether it belongs to an affected batch and a replacement unit can be requested for you.

Victron Energy | Fan Is Very Loud | MultiPlus-II | EasySolar-II | Quattro-II

The fan in older MultiPlus-II, EasySolar-II and Quattro-II units can be noisy, especially at low fan speeds.

Installing a Victron fan kit can solve the problem. Please provide the serial number of your device so it can be checked whether your unit is affected and, if applicable, a replacement fan can be supplied. Please note that this only improves fan noise at low speeds. There is no change under full load.

Victron Energy | MultiPlus Keeps Restarting After 10 Seconds

Please check the remote-switch connection on the Multi control board. There should be a wire bridge between the left and centre terminals. The Cerbo GX switches a line that enables power to the Multi control board. After 10 seconds this line is released, and the Multi should take over from there. If the remote-switch connection is not wired, the Multi cannot maintain its own power supply. The Cerbo GX will try again, the Multi will start up and stop after 10 seconds, and the cycle will repeat.

Growatt Error Codes | 200 to 399

Error 201 – Residual current too high
Cause: Leakage current exceeds the permitted value.
Solution: Restart the inverter. If the problem remains, contact support so a service case can be opened with the manufacturer.

Error 202 – DC voltage too high
Cause: The inverter's DC input voltage exceeds the permitted range.
Solution: Check the voltage of each string and make sure it remains below the inverter's maximum permitted value. Also take ambient temperature into account because module voltage rises at low outdoor temperatures.

Error 203 – PV insulation resistance too low
Cause: A short circuit or leakage path exists between the positive/negative conductors and earth.
Solution: Measure the insulation resistance of the strings. If it is below 50 kΩ, a leakage fault may be present; check the cable connections. If the wiring is not the cause, contact support so a warranty case can be opened with the manufacturer.

Sofar Solar HYD 5–20KTL Hybrid Inverter | Three-Phase | Local Firmware Update

Sofar Solar HYD 5–20KTL Hybrid Inverter | Three-Phase | Local Safety Update

Cannot Connect the Growatt EV Charger to Wi-Fi

Possible solutions:

1. Wi-Fi band:

   • 2.4 GHz only: Make sure the router is providing a 2.4 GHz network. Many devices, including some Growatt EV Charger configurations, do not connect via 5 GHz.
   • Channel selection: Choose a less congested 2.4 GHz channel where possible to reduce interference.

2. Wi-Fi settings:

   • SSID and password: Carefully check the Wi-Fi network name and password, including upper/lower case and special characters.
   • Security protocol: Make sure the Wi-Fi security setting is compatible with the charger, for example WPA2-PSK. Avoid obsolete protocols such as WEP.

3. Hardware and router:

   • RS485 bus: Disconnect the RS485 bus from the Growatt EV Charger during Wi-Fi troubleshooting, as this connection is intended for other communication functions.
   • Wi-Fi module: Check that the Wi-Fi module is installed correctly and seated securely. A defective module can occasionally cause connection problems.
   • Router settings: Check that settings such as MAC filtering are not blocking the charger.

4. Interference:

   • Electromagnetic interference: Keep the charger and router away from strong interference sources and avoid shielding by large metal surfaces where possible.
   • Physical obstacles: Thick walls and other obstacles between charger and router can weaken the signal.

5. Software:

   • Firmware: Check whether newer firmware is available for the Growatt EV Charger. Updates can resolve errors and improve Wi-Fi stability.
   • App version: Make sure you are using the latest Growatt app version.

Additional tips:

• Wi-Fi signal strength: Check signal strength at the charger's installation location. A weak signal can cause unstable connections.
• Restart the router: Restart the router after changing Wi-Fi settings so the changes are applied cleanly.
• Temporary interference: Temporary Wi-Fi problems can interrupt the connection. Wait a few minutes and try again.

Growatt | Grid-Tied Inverter Error Guide

Why does the inverter report high DC voltage (Error 202)?

Analysis: The source guidance states that the maximum DC input is typically up to 550 V for the referenced single-phase Growatt models and up to 1,100 V for the referenced three-phase models. If the string voltage exceeds the inverter's permitted maximum, the inverter reports excessive PV input voltage.

Solution: Check every string and make sure the total open-circuit voltage remains below the inverter's maximum permitted input voltage. The effect of ambient temperature on module voltage must also be taken into account.

Why does the inverter report “PV insulation resistance too low” (Error 203)?

Analysis: Grid-tied inverters check insulation resistance between the PV array and earth before operation. A fault or leakage path between a string conductor and earth can trigger this error and must be investigated. The source guidance cites an insulation resistance below approximately 50 kΩ as an indication of a possible leakage fault for the affected units.

Solution: Locate and correct the affected string or wiring fault. If the PV wiring and insulation are confirmed to be correct but the error remains, the inverter may require replacement or service.

Why does the inverter report “AC voltage out of range” (Error 300)?

Analysis: Grid-tied inverters operate within the voltage limits required by the configured grid code. Grid fluctuations can cause the measured voltage to move outside this range and the inverter will then disconnect from the grid. The original guidance gives the example of a 195–253 V range under a specific Chinese CQC configuration.

Solution: Check the actual grid voltage and the selected grid-code settings. Where permitted by the applicable grid requirements, qualified personnel can adjust protection parameters through the inverter settings or supported Growatt tools such as ShineBus, ShinePhone, ShineTools or ShineServer.

Why can a newly installed inverter report abnormal earth-voltage detection?

Analysis: The source guidance identifies an AC voltage difference greater than approximately 20 V between neutral and protective earth during the inverter self-test as a possible cause. Incorrect neutral wiring or an inadequate earth connection can be responsible.

Solution: Check neutral and protective-earth wiring and correct any installation fault. Any change to protective functions or grid settings should only be made where technically and legally permitted.

Why does the inverter report “AC frequency out of range” (Error 304)?

Analysis: The inverter continuously tracks grid frequency. A sudden grid-frequency deviation outside the permitted range causes the inverter to disconnect.

Solution: Check the grid frequency and selected grid code. Where allowed, qualified personnel can adjust the permitted frequency range using the inverter settings or supported Growatt configuration tools.

Why does the inverter report “DC component at output too high” (Error 402)?

Analysis: The inverter output should be an AC waveform. If an abnormal DC component is detected in the output, the inverter reports this fault.

Solution: Service personnel can check the relevant parameters using supported Growatt diagnostic software. If the fault remains, replacement or repair of the inverter may be required.

Why does the inverter report a relay fault (Error 405)?

Analysis: A relay fault can be caused by hardware or by parameters/grid conditions. If it occurs immediately after AC and DC power are applied, the source guidance indicates a hardware problem is more likely. If it appears after the inverter's startup countdown, grid or parameter conditions may be involved.

Solution: An immediate hardware relay fault may require inverter replacement. If the error occurs after the self-test/startup sequence, check grid and configuration conditions and contact service if necessary.

Why does the inverter report “Temperature too high” (Error 408)?

Analysis: Check whether the installation location is sufficiently ventilated and whether the fan is operating normally. If external conditions do not explain the temperature, an internal issue may be present.

Solution: Correct ventilation or cooling problems. If the cause appears internal, review inverter logs and contact service.

Why does the inverter report abnormal bus voltage (Error 409)?

Analysis: This error indicates abnormal internal capacitor/bus voltage or excessive positive/negative deviation. Excessive string voltage or an earthing problem can be possible causes.

Solution: Check string voltage, earthing and wiring. Correct any installation issue and restart the unit. If the wiring is correct and the error persists, contact service.

Why does the inverter report an internal communication fault (Error 411)?

Analysis: On a new unit, transport vibration can potentially loosen an internal control-board connection. On an older unit, a control-board or firmware problem may be involved.

Solution: Qualified service personnel should inspect the internal connections where appropriate. If the fault occurred during normal use, contact service.

Why does the inverter report an SPD fault alarm (Warning 202)?

Analysis: The inverter contains surge-protection devices on its AC/DC sides. A surge or lightning event can cause the SPD to operate and subsequently fail.

Solution: An SPD fault may not immediately stop power generation, but the protection should be restored. Contact qualified service personnel for inspection and replacement as required.

Why does the inverter report a fan fault (Warning 400)?

Analysis: Check whether the rear fan turns freely and operates normally. Mechanical resistance can indicate a seized fan or bearing problem.

Solution: Replace a defective fan. If the fans are functional or have already been replaced and the warning remains, the fan power-supply circuit may need service.

Growatt | Grid-Tied Inverter Error Guide

Why does the inverter report high DC voltage (Error 202)?

Analysis: The source guidance states that the maximum DC input is typically up to 550 V for the referenced single-phase Growatt models and up to 1,100 V for the referenced three-phase models. If the string voltage exceeds the inverter's permitted maximum, the inverter reports excessive PV input voltage.

Solution: Check every string and make sure the total open-circuit voltage remains below the inverter's maximum permitted input voltage. The effect of ambient temperature on module voltage must also be taken into account.

Why does the inverter report “PV insulation resistance too low” (Error 203)?

Analysis: Grid-tied inverters check insulation resistance between the PV array and earth before operation. A fault or leakage path between a string conductor and earth can trigger this error and must be investigated. The source guidance cites an insulation resistance below approximately 50 kΩ as an indication of a possible leakage fault for the affected units.

Solution: Locate and correct the affected string or wiring fault. If the PV wiring and insulation are confirmed to be correct but the error remains, the inverter may require replacement or service.

Why does the inverter report “AC voltage out of range” (Error 300)?

Analysis: Grid-tied inverters operate within the voltage limits required by the configured grid code. Grid fluctuations can cause the measured voltage to move outside this range and the inverter will then disconnect from the grid. The original guidance gives the example of a 195–253 V range under a specific Chinese CQC configuration.

Solution: Check the actual grid voltage and the selected grid-code settings. Where permitted by the applicable grid requirements, qualified personnel can adjust protection parameters through the inverter settings or supported Growatt tools such as ShineBus, ShinePhone, ShineTools or ShineServer.

Why can a newly installed inverter report abnormal earth-voltage detection?

Analysis: The source guidance identifies an AC voltage difference greater than approximately 20 V between neutral and protective earth during the inverter self-test as a possible cause. Incorrect neutral wiring or an inadequate earth connection can be responsible.

Solution: Check neutral and protective-earth wiring and correct any installation fault. Any change to protective functions or grid settings should only be made where technically and legally permitted.

Why does the inverter report “AC frequency out of range” (Error 304)?

Analysis: The inverter continuously tracks grid frequency. A sudden grid-frequency deviation outside the permitted range causes the inverter to disconnect.

Solution: Check the grid frequency and selected grid code. Where allowed, qualified personnel can adjust the permitted frequency range using the inverter settings or supported Growatt configuration tools.

Why does the inverter report “DC component at output too high” (Error 402)?

Analysis: The inverter output should be an AC waveform. If an abnormal DC component is detected in the output, the inverter reports this fault.

Solution: Service personnel can check the relevant parameters using supported Growatt diagnostic software. If the fault remains, replacement or repair of the inverter may be required.

Why does the inverter report a relay fault (Error 405)?

Analysis: A relay fault can be caused by hardware or by parameters/grid conditions. If it occurs immediately after AC and DC power are applied, the source guidance indicates a hardware problem is more likely. If it appears after the inverter's startup countdown, grid or parameter conditions may be involved.

Solution: An immediate hardware relay fault may require inverter replacement. If the error occurs after the self-test/startup sequence, check grid and configuration conditions and contact service if necessary.

Why does the inverter report “Temperature too high” (Error 408)?

Analysis: Check whether the installation location is sufficiently ventilated and whether the fan is operating normally. If external conditions do not explain the temperature, an internal issue may be present.

Solution: Correct ventilation or cooling problems. If the cause appears internal, review inverter logs and contact service.

Why does the inverter report abnormal bus voltage (Error 409)?

Analysis: This error indicates abnormal internal capacitor/bus voltage or excessive positive/negative deviation. Excessive string voltage or an earthing problem can be possible causes.

Solution: Check string voltage, earthing and wiring. Correct any installation issue and restart the unit. If the wiring is correct and the error persists, contact service.

Why does the inverter report an internal communication fault (Error 411)?

Analysis: On a new unit, transport vibration can potentially loosen an internal control-board connection. On an older unit, a control-board or firmware problem may be involved.

Solution: Qualified service personnel should inspect the internal connections where appropriate. If the fault occurred during normal use, contact service.

Why does the inverter report an SPD fault alarm (Warning 202)?

Analysis: The inverter contains surge-protection devices on its AC/DC sides. A surge or lightning event can cause the SPD to operate and subsequently fail.

Solution: An SPD fault may not immediately stop power generation, but the protection should be restored. Contact qualified service personnel for inspection and replacement as required.

Why does the inverter report a fan fault (Warning 400)?

Analysis: Check whether the rear fan turns freely and operates normally. Mechanical resistance can indicate a seized fan or bearing problem.

Solution: Replace a defective fan. If the fans are functional or have already been replaced and the warning remains, the fan power-supply circuit may need service.

Growatt | Off-Grid Inverter Error Guide

Why does the inverter report “Battery voltage is too high” (Error 03)?

Analysis: If the actual battery voltage is normal but the value shown on the LCD is abnormal, the battery-voltage measurement circuit may be the cause.

Test: First disconnect the battery from the inverter and measure the battery voltage separately. If it is normal, reconnect the battery and compare the LCD value with the measured voltage.

Solution: Connect only the battery to the inverter, without grid, PV or loads. Press UP and DOWN together for 3 seconds, enter 111 and press Enter. On the battery-voltage calibration page, “S” reduces the displayed voltage and “A” increases it. For example, if the LCD shows 53 V and the multimeter shows 50 V, enter 3 V on the S side and save with Enter. If calibration does not solve the problem, the main board may need replacement.

Why does the inverter report “Output short circuit” (Error 05)?

Analysis: The cause can be a connected load or an inverter hardware fault.

Test: Disconnect all loads and check whether Error 05 disappears. If it remains, switch the inverter off completely until the display is dark and have the AC output checked for a short circuit using suitable test equipment.

Solution: If the fault is caused by a load, identify and disconnect the affected load. If the inverter itself is the cause, contact Growatt service.

Why does the inverter report “Output voltage is too high” (Error 06)?

Analysis: The error is triggered if the AC output voltage reaches approximately 280 V for about 200 ms.

Test: Operate the inverter only from the battery bank. If Error 06 remains, the DC-to-AC circuit may be affected.

Solution: Check the AC cable between inverter and loads. If the error disappears after disconnecting all loads, the cable may be undersized or the transmission distance too long. Otherwise contact Growatt service.

Why does the inverter report “Bus voltage is too high” (Error 08)?

Solution: Restart the inverter. If required, update the special firmware intended for Error 08, available from Growatt. If the error continues to recur after the update, for example every few hours, the main board may be faulty and Growatt service should be contacted.

Why does the inverter report “Overload” (Error 07)?

Analysis: The error can be triggered when load power is above 112% but below 150% for about 10 seconds, or above 150% for about 2 seconds.

Test: Disconnect the load and check whether the inverter returns to a normal 230 V AC output without Error 07. If it does not, the control board may be the cause.

Solution: Troubleshoot the connected loads first. If the fault is caused by inverter hardware, contact Growatt service.

Why does the inverter report Error 09?

Analysis: If the DC bus voltage exceeds approximately 400 V for 30 seconds, Error 09 can occur. A damaged MOSFET or related circuit is a common possible cause.

Test: Connect only the battery to the inverter, without grid or PV input. If Error 09 remains, the DC-DC circuit on the main board may be faulty.

Solution: For normal end users, replacement of the main board is generally preferable. Component-level repair involving MOSFETs or optocouplers should only be carried out by qualified professionals.

Why does the inverter report “Bus voltage is too low” (Error 52)?

Analysis: Under high load the battery may be unable to supply enough current.

Test: Restart the battery and inverter and disconnect all loads. If the inverter then works normally, the load or battery-current capability is likely involved.

Solution: Check the battery configuration and current capability. With suitable battery systems, such as some ARK configurations, dividing batteries into two parallel groups may be an option where permitted by the manufacturer.

Why does the inverter report “Overcurrent or overvoltage” (Error 51)?

Analysis: Lightning or a surge can damage the MOV protection board.

Test: Disconnect all loads and check whether Error 51 disappears. Qualified personnel can then inspect the MOV board, which is connected in parallel with the grid input.

Solution: Replace a defective MOV board.

Why does the inverter report “Battery connection open” (Error 56)?

Analysis: Possible causes include incorrect charging-current settings in options 2 or 5 or a defective fuse on the main board.

Test: Switch off the battery DC disconnect and measure the actual battery voltage. If voltage is normal, verify battery type and inverter settings. For lithium batteries, excessive charging current can trigger BMS protection and open the battery MOSFET. Use only battery modes permitted for the connected battery. For lead-acid batteries, charging current is commonly set according to battery capacity, often around 0.2–0.3 C where specified by the battery manufacturer.

Solution: Check battery type and all battery settings on the inverter. If these are correct, contact Growatt service.

Why does the inverter report “Host loss” (Error 81)?

Analysis: In parallel operation, the inverter reports Error 81 when the host cannot be detected for more than about 8 seconds.

Test and solution: Check that the parallel cable is securely connected and restart the inverter. If necessary, replace the parallel cable. If the error remains, test the inverters separately. The parallel board may need replacement. Swapping a known-good cable or parallel board between units can help qualified service personnel identify the faulty component.

Why does the inverter report “Fan fault” (Warning 01)?

Analysis: The fan itself or a loose fan connector can be the cause.

Test: Have the inverter inspected and verify that the fans operate correctly.

Solution: If the fans are mechanically sound, an applicable firmware update may clear the warning. Otherwise reseat the fan connector or replace the defective fan.

Why does the inverter report “Internal temperature is high” (Warning 02)?

Analysis: A temperature sensor or the temperature-measurement circuit may be faulty.

Test: Have the temperature sensors on the MPPT board and main board checked. Comparing them with known-good sensors can help identify the fault.

Solution: Replace the affected sensor if required or contact Growatt service.

Why does the inverter report “Battery is overcharged” (Warning 03)?

Analysis: Possible causes include incorrect lead-acid or lithium-battery settings or an error in the battery-voltage measurement circuit.

Test and solution: For lithium batteries, confirm communication and compatibility with the inverter and use only the approved battery mode and charging-current settings. If the battery is unsupported, follow Growatt's approved configuration guidance. The displayed battery voltage can be calibrated using the same procedure described for Error 03. For lead-acid batteries, check settings such as bulk and float voltage, including options 19 and 20 where applicable. Update battery or inverter firmware where appropriate. If the warning remains, contact Growatt service.

Why does the inverter report “Battery voltage/SOC is too low” (Warning 04)?

Analysis: Warning 04 indicates a low battery; the source guidance cites a battery voltage below about 44 V for the affected 48 V models.

Solution: Confirm the battery type, measure the actual battery voltage with the battery isolated, compare it with the LCD value and correct any display deviation as described under Warning 03 / Error 03.

Why does the inverter report “Battery cannot communicate with inverter” (Warning 20)?

Analysis: Warning 20 indicates a BMS communication fault.

Solution: Check or replace the BMS communication cable and confirm that the battery is approved and listed as compatible by Growatt. If a battery is not supported for BMS communication, use only a non-BMS battery mode that Growatt explicitly permits for that battery and installation.

Growatt | Battery Storage Inverter Error Guide

Why does the energy storage inverter show “No AC Connection” (Error 302)?

Analysis: The unit has no grid connection.

Solution: Check whether the wiring between the grid and the unit is correct and whether all connections are reliable.

Why does the energy storage inverter show “AC V Outrange” or “AC F Outrange” (Error 300 / Error 304)?

Analysis: The energy storage inverter sets permitted grid voltage and frequency according to the applicable safety requirements for the selected country or region. This error occurs when the connected grid voltage or frequency is outside that permitted range.

Solution: Check whether the grid voltage or frequency is above the upper limit or below the lower limit of the permitted range.

Why does the energy storage inverter show Error 418?

Analysis: Different energy storage inverter models use their own firmware versions. This error occurs if the firmware programmed into the unit does not match the model.

Solution: Check whether the correct software version is installed. If not, the correct firmware must be programmed to resolve the problem.

Why does the energy storage inverter show “BMS COM Fault” (Error 500)?

Analysis: In lithium-battery mode, the inverter must communicate with the battery via the communication cable. If communication fails, the unit displays a BMS communication fault.

Solution: Check the communication wiring between the energy storage inverter and the battery.

Why does the energy storage inverter show “Bat Voltage Low” or “Bat Voltage High” (Error 502)?

Analysis: In lead-acid mode, upper and lower battery-voltage limits must be configured. The error occurs when battery voltage is outside this range.

Solution: Set the correct battery-voltage range in the energy storage inverter.

Why does the energy storage inverter show “Battery Reversed” (Error 505)?

Analysis: The positive and negative battery terminals must match the polarity markings on the inverter.

Solution: Check whether the battery positive and negative terminals have been reversed.

Why does the energy storage inverter show “Battery Open” (Error 506)?

Analysis: In lithium-battery mode this error can occur when communication between inverter and battery is working but the battery power connection is open.

Solution: Check that the battery positive and negative terminals are securely connected to the inverter.

Why does the unit show Warning 401?

Analysis: Under some safety configurations the inverter must be connected to an electricity meter. The warning occurs if the required meter is not connected.

Solution: Check whether the meter is connected and whether communication between the meter and the energy storage inverter is working correctly.

Why does the energy storage inverter show “NTC OPEN”?

Analysis: In lead-acid mode, the NTC temperature sensor must be connected to the corresponding terminal. This error occurs when the NTC is not connected.

Solution: Check that the NTC terminal is properly connected to the energy storage inverter.

What is the DRMS function of the energy storage inverter?

DRMS is used for demand-response or power scheduling. The corresponding DRMS control code can be used to limit grid input and output power.

Function and connection of the dual meter

A dual meter can be connected to monitor inverter and energy-storage power as required. On the LCD, select the corresponding meter setting under “Mode change → Sensor → Meter”. Connect the meter via “CT1/METER1” and the appropriate “485-1” or “485-2” communication port.

Why does the energy storage inverter show “Overload”?

Analysis: Each model has a maximum output-power limit. This error occurs when the unit is overloaded.

Solution: Check whether the connected load exceeds the permitted output and reduce it to the rated range of the inverter.

Victron solar configurator: Plan grid-connected and registration-free solar systems in minutes

Optimal Design of Strings, MPPTs and Inverters

6 Solutions for Difficult Roofs, Different Orientations & Shading

How Do I Find the Right Solar Mounting System Quickly and Easily?

1. Send a message saying that you would like to use K2 Base, preferably via the chat or by email to kontakt@inutec-int.com. You will receive an invitation to the software.
2. After access has been granted, open K2 Base and start your personal project plan.
3. When planning is complete, send the parts list in Excel format via chat or email to receive an individual quotation.

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Victron Energy | How Many AC Current Sensors Can Be Connected to a VE.Bus System?

The current maximum is 9 sensors (since Cerbo GX v1.31). Please note that each sensor must be configured separately using an assistant in the Multi or Quattro to which it is wired.

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