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Victron energy SUN - User Manual

Victron energy SUN
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SUN Inverter Manual
Rev 00 05/2022
ENGLISH

Questions and Answers

  • S
    Shane HunterAug 18, 2025
    What to do if the green POWER LED is on and the red ALARM LED is on in my Victron energy SUN Inverter?
    • C
      caldwellmeganAug 18, 2025
      If the green POWER LED is on and the red ALARM LED is on, reduce the AC load connected to your Victron energy Inverter.
  • K
    kathleenholtAug 20, 2025
    Why is the red ALARM LED blinking slowly on my Victron energy SUN Inverter?
    • M
      Monica WebbAug 20, 2025
      A slowly blinking red ALARM LED on your Victron energy Inverter indicates a low battery. Charge the battery and turn off AC loads. Also, ensure all battery cable connections are tightened, the cables are sufficiently thick, the battery is full, and in good working order.
  • K
    Kenneth Gray Jr.Aug 23, 2025
    What should I do if the red ALARM LED is blinking with a fast double pulse on my Victron energy SUN Inverter?
    • L
      Linda McclureAug 23, 2025
      If the red ALARM LED is blinking with a fast double pulse, reduce the AC load on your Victron energy Inverter or move the inverter to a better-ventilated area.
  • J
    Jay KellyAug 26, 2025
    How to fix a Victron energy SUN when the green POWER LED is blinking with a fast double pulse and the red ALARM LED is on?
    • S
      stewartcheyenneAug 26, 2025
      To resolve this, remove the cause of the overload. Then, restart the inverter by switching it off and then back on again.
  • S
    Sean BartonAug 28, 2025
    How to troubleshoot a Victron energy Inverter when both the green POWER LED and red ALARM LED are off?
    • S
      Stephen HarrisAug 28, 2025
      First, check the ON/OFF/ECO switch to ensure it is in the ON or ECO position. Try turning the switch to OFF and then back to ON to see if the inverter starts. If not, check the remote on/off connector for a wire loop or the remote switch/panel. Verify the DC cable connections and external fuses, ensuring you measure battery voltage at the inverter's battery connection. If the internal fuse is blown, the inverter requires servicing.
  • W
    williamcostaAug 30, 2025
    What does it mean when the red ALARM LED is blinking fast on my Victron energy Inverter?
    • V
      vazquezbethAug 30, 2025
      A rapidly blinking red ALARM LED indicates a high DC input voltage. Reduce the DC input voltage, verify the battery voltage is correct, and ensure the battery bank is wired correctly. Check for faulty or incorrect chargers or equipment with a faulty charge regulator.
  • B
    Becky MillerSep 1, 2025
    What to do if the green POWER LED is blinking with a fast double pulse and the red ALARM LED is blinking slowly on my Victron energy Inverter?
    • T
      Tonya ParkSep 1, 2025
      To resolve this, charge the battery or switch the inverter off and then back on again to restart it. Check the battery voltage at the battery terminals of the inverter. Also, check the DC fuses, cables, and cable connections.
  • S
    Samantha LopezSep 4, 2025
    What does it mean when the green POWER LED and the red ALARM LED are blinking with a fast double pulse on my Victron energy Inverter?
    • A
      Ashley GonzalezSep 4, 2025
      This indicates the inverter is overheated. Wait until the inverter has cooled down; it will automatically turn back on when its internal temperature has dropped to an acceptable level. Improve the ventilation around the inverter or move it to a cooler location.
  • J
    Joe WernerSep 6, 2025
    Why are the green POWER LED blinking with a fast double pulse and the red ALARM LED blinking fast on my Victron energy SUN Inverter?
    • P
      phammondSep 6, 2025
      This indicates a high DC input voltage. Reduce the DC input voltage, check if the battery voltage is correct and if the battery bank is wired correctly. Also check if there perhaps are faulty or incorrect chargers or equipment with a faulty charge regulator.
  • D
    Douglas GarciaSep 8, 2025
    What should I check if the red ALARM LED is blinking with a fast single pulse at longer intervals on my Victron energy Inverter?
    • K
      kmorrisSep 8, 2025
      Check if all battery cable connections have been tightened and ensure the battery cables are of sufficient thickness. DC ripple is related to a voltage drop over the battery cables.

Summary

Safety Instructions

General Description

2.1. Inverter

Overview of the SUN Inverter's capabilities and features.

2.2. Solar Charge Controller

Description of the integrated PWM solar charge controller.

2.3. ON;OFF;CHARGER-ONLY Switch

Explanation of the three-way switch functions.

2.4. LED Diagnosis and Monitoring

Details on using LEDs for status and error indication.

General Description

2.5. The VictronConnect App

Information on using the VictronConnect mobile app.

2.6. Bluetooth

Details on Bluetooth connectivity and its uses.

2.7. VE.Direct Port

Explanation of the VE.Direct port and its connections.

2.8. Remote On;Off Control

Methods for remotely controlling the inverter's on/off function.

General Description

2.9. Temperature Sensor

Information on using temperature sensors for charging.

2.10. BMS Communication

How BMS communicates with the SUN Inverter.

Installation

3.1. Physical Installation

Guidance on the physical placement and mounting of the inverter.

3.1.1. Location

Recommended locations for installing the inverter.

3.1.2. Mounting

Instructions and options for mounting the inverter securely.

Installation

3.2. Electrical Installation

Steps and considerations for electrical connections.

3.2.1. Connection to the Battery

Detailed guide for connecting the inverter to the battery.

3.2.2. Solar Connection

How to connect solar panels to the inverter.

3.2.3. AC Output Connection

Information on connecting the AC output.

Installation

3.2.4. Chassis to Ground Connection

Instructions for connecting the chassis to ground.

3.2.5. Remote Connector

Details on using the remote connector for control.

Installation

3.2.6. VE.Direct Connection

Connecting the inverter via VE.Direct for monitoring.

3.2.7. SUN Inverter System Example

Diagram showing a typical system setup.

Configuration

4.1. AC Output Voltage and Frequency

Setting the inverter's AC output voltage and frequency.

4.2. ECO Mode and ECO Settings

Configuring the ECO mode for power saving.

Configuration

4.3. Low Battery Alarm and Charge Detect Settings

Configuring low battery shutdown and charge detection.

Configuration

4.3.1. Dynamic Cut Off

Advanced low battery shutdown based on discharge rate.

Configuration

4.4. Battery Settings

Adjusting various battery charging parameters.

Configuration

4.4.1. Battery Charge Algorithm Settings

Detailed settings for battery charge algorithms in expert mode.

Configuration

4.5. VE.Smart Network

Setting up and using the VE.Smart network.

Configuration

4.5.1. VE.Smart Network Setup

Step-by-step guide to setting up a VE.Smart network.

Configuration

4.6. Firmware Update

How to update the inverter's firmware.

4.7. Reset Settings to Default

Procedure for resetting configuration settings.

Operation

5.1. Inverter

How to turn the inverter on and its operation modes.

5.1.1. ECO Mode

Details on using and configuring ECO mode.

5.2. Solar Charger

Explanation of the solar charger's operation and stages.

Operation

5.2.1. CHARGE Mode

Using the inverter solely as a solar charger.

5.3. Power and Alarm LED Definitions and Troubleshooting

Interpreting LED status and troubleshooting common issues.

Operation

5.4. STATE LED Definitions

Understanding the yellow STATE LED for solar charger status.

5.6. Monitoring via VictronConnect

How to monitor the inverter using the VictronConnect app.

Operation

5.5. Protections and Automatic Restarts

Overview of inverter protections and restart procedures.

Technical Specifications

6.1. Technical Specifications SUN Inverter

Detailed technical data for the SUN Inverter.

Appendix

7.1. AC Outlet

Description and image of the AC outlet.

7.2. Connection Overview

Diagram showing the inverter's connection ports.

7.3. Installation Information Neutral to Ground Connection

Guidance on connecting neutral to ground.

Appendix

7.4. Dimensions

Drawings and dimensions of the SUN Inverter.

Victron energy SUN Specifications

General IconGeneral
BrandVictron energy
ModelSUN
CategoryInverter
LanguageEnglish

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