SAJ Sununo Plus Series

Questions and Answers

A
Andrew BarreraAug 16, 2025
What to do if my SAJ Sununo Plus shows AC Voltage Error?
- K
  Kaitlin MorrisonAug 16, 2025
  If your SAJ Inverter displays an AC Voltage Error, verify the grid voltage and the connection between the inverter and the grid. Also, check the inverter's on-grid standard settings. If the grid voltage exceeds local regulations, consult with local grid personnel about adjusting the voltage at the feed point or modifying the regulated voltage value. If the grid voltage is within the regulated range and the error persists, contact your distributor or SAJ.
D
Dawn LambertAug 19, 2025
What should I do if my SAJ Sununo Plus Inverter displays a Temperature High Error?
- L
  laurasandersSep 12, 2025
  If your SAJ Inverter shows a Temperature High Error, check if the radiator is blocked and ensure the inverter is operating within an appropriate temperature range. If these checks are normal, contact your distributor or SAJ.
D
David NguyenAug 22, 2025
What to do if my SAJ Sununo Plus Inverter displays a Frequency Error?
- K
  Karen EdwardsAug 22, 2025
  If your SAJ Inverter shows a Frequency Error, check the country settings and the local grid frequency. If these are normal, contact your distributor or SAJ.
M
Molly RiveraAug 26, 2025
What to do if my SAJ Sununo Plus displays a Current High error?
- M
  Michael HolmesAug 26, 2025
  If your SAJ Inverter displays a Current High error, check the connection status between the inverter and the grid and test the stability of the grid voltage. If these are normal, contact your distributor or SAJ.
J
Jessica DuranAug 28, 2025
What to do if my SAJ Sununo Plus Inverter displays GFCI Error?
- D
  Debra GardnerAug 28, 2025
  If your SAJ Inverter shows a GFCI Error, check the insulation resistance of the positive and negative sides of the solar panel. Also, verify that the inverter is not in a wet environment and that the grounding is properly connected. If these checks are normal, contact your distributor or SAJ.
S
Steven TuckerAug 31, 2025
What to do if my SAJ Sununo Plus Inverter displays ISO Error?
- S
  Steven RodriguezAug 31, 2025
  If your SAJ Inverter displays an ISO Error, check the insulation resistance of the positive and negative sides of the solar panel. Also, check if the inverter is in a wet environment and ensure the inverter's grounding is secure. If these checks are normal, contact your distributor or SAJ.
E
Erin JohnstonSep 3, 2025
What to do if my SAJ Sununo Plus Inverter displays No Grid Error?
- K
  Kimberly RojasSep 3, 2025
  If your SAJ Inverter displays a No Grid Error, check the connection status between the AC side of the inverter and the grid. If this is normal, contact your distributor or SAJ.
K
Katelyn HarrisSep 6, 2025
What to do if my SAJ Sununo Plus Inverter displays a Bus Voltage High error?
- H
  howelljasonSep 6, 2025
  If your SAJ Inverter displays a Bus Voltage High error, check the settings of the solar panel, a SAJ designer can help you. If this is normal, contact your distributor or SAJ.
S
sandycolemanSep 9, 2025
What does Lost Communication mean on my SAJ Sununo Plus?
- T
  terrypatelSep 9, 2025
  If your SAJ Inverter shows a Lost Communication error, check the connection of the communication cables between the control board and the display board. If this is normal, contact your distributor or SAJ.
C
Christian KellySep 12, 2025
What to do if my SAJ Sununo Plus displays PV Voltage Fault?
- B
  ballardjenniferSep 12, 2025
  If your SAJ Inverter displays a PV Voltage Fault, check the settings of the solar panel, a SAJ designer can help you. If this is normal, contact your distributor or SAJ.

Summary

Preface

Safety Precautions

Scope of Application

Describes instructions for installing, operating, maintaining, and troubleshooting SAJ grid-tied inverters.

Safety Instructions

Details DANGER, WARNING, CAUTION, and NOTICE symbols and their meanings for safe operation.

Target User Group

Specifies that only qualified electricians should install, maintain, and repair the inverter.

Preparation and Safety

Preparation Safety Guidelines

Provides critical safety warnings regarding electrical shock, handling, and grounding during preparation.

Explanation of Safety Symbols

Defines various safety symbols used in the manual, including electrical voltage, hot surface, and disposal.

Product Information Overview

Product Application Scope

Details the use of Sununo Plus series as grid-tied single-phase inverters in solar power systems.

Product Model Specifications

Explains the naming convention for Sununo Plus inverters, including rating and MPPT function.

Product Dimensions and Overview

Presents visual representations and dimensions for different Sununo Plus series models.

Technical Datasheet

Provides detailed technical specifications, including input/output parameters, efficiency, and protection features.

Installation Instructions and Safety

Installation Safety Precautions

Highlights DANGER warnings for potential fire, electric shock, and high voltage during installation.

Pre-installation Checks

Covers checking the package for damage and verifying assembly parts before installation.

Installation Method and Position Guidance

Details recommended mounting methods, orientation, and optimal installation site conditions.

Mounting Procedure Steps

Outlines the steps for marking drill holes, drilling, placing expansion tubes, and mounting the inverter.

Electrical Connection Procedures

Hot-line Job Safety Instructions

Emphasizes safety for professional technicians when performing electrical connections, including PPE.

Electrical Interface Specifications

Identifies and describes the various ports (DC Input, DC Switch, RS232/Wi-Fi, AC Output) on the inverter.

AC Side Connection Guide

Provides instructions and specifications for connecting the AC cable, including waterproof hole and connector.

DC Side Connection Guide

Details the procedure for connecting DC cables, including positive/cathode connectors and crimping.

Communication Connection Options

Explains the RS232 interface and its potential connection with Wi-Fi, Ethernet, and GPRS modules.

Debugging and Operation

Human-Computer Interface Overview

Describes the inverter's interface components: LED indicators, LCD display, and buttons.

First Run Setup Procedures

Guides users through initial configuration steps, including setting the country and understanding operation states.

Monitoring Operation Methods

Explains how to monitor the inverter's status using Wi-Fi, Ethernet, or GPRS modules.

Fault Codes and Troubleshooting

Fault Code Directory

Lists error codes and their corresponding fault information for quick reference.

Troubleshooting Guide

Provides step-by-step solutions and checks for various fault conditions and error messages.

Recycling and Disposal Guidelines

Guarantee Service Information

Contact and Support Details

SAJ Warranty Policy

Standard Warranty Period

Specifies the standard warranty duration for SAJ inverters from shipment or purchase date.

Warranty Extension Options

Explains how to extend the warranty period and available extension durations.

Warranty Claim Conditions

Outlines the process for claiming warranty, including required information and contact methods.

Service After Warranty Expiration

Exclusion of Liability

Lists circumstances not covered by the manufacturer's warranty, such as product modification or improper use.

Warranty Card Completion