SAJ R5 Series - User Manual

Questions and Answers

J
John LopezAug 17, 2025
What to do if my SAJ Inverter shows an AC Voltage Error?
- C
  Carol BurnsAug 17, 2025
  If your SAJ Inverter displays an AC Voltage Error, first check the grid voltage and the connection between the inverter and the grid. Also, verify the on-grid standard settings of the inverter. If the grid voltage is outside the regulated range, consult with local grid workers to adjust the voltage at the feed point or change the regulated voltage value. If the grid voltage is within the allowed range and the error persists, contact your distributor or SAJ technical support.
K
Katherine ChandlerAug 20, 2025
How to fix a GFCI Error on my SAJ Inverter?
- J
  Jordan BellAug 20, 2025
  To address a GFCI Error on your SAJ Inverter, inspect the insulation resistance of both the positive and negative sides of the solar panel. Ensure the inverter isn't in a wet environment and verify the inverter's grounding. If these checks are normal, contact your distributor or SAJ technical support.
S
Stephanie HooverAug 22, 2025
What causes an ISO Error on a SAJ R5 Inverter and how to resolve it?
- E
  evelynhernandezAug 22, 2025
  An ISO Error on your SAJ Inverter may be caused by insulation resistance issues on the positive or negative side of the solar panel, a wet environment, or a loose grounding connection. Check the insulation resistance of the solar panel, ensure the inverter is not in a damp location, and verify the inverter's grounding is secure. If the problem continues, contact your distributor or SAJ technical support.
J
Jacob HallAug 25, 2025
Why is my SAJ R5 Inverter showing a Frequency Error?
- A
  Amber OrtizAug 26, 2025
  A Frequency Error on your SAJ Inverter might occur due to incorrect country settings or issues with the local grid frequency. Check that the country setting is correct and verify the local grid frequency. If both are normal, contact your distributor or SAJ technical support.
Q
qatkinsAug 28, 2025
What should I do if my SAJ R5 displays a Grid Lost Error?
- J
  Jeffrey VillaAug 28, 2025
  If your SAJ Inverter shows a Grid Lost Error, check the connection status between the AC side of the inverter and the grid. If the connection is normal, contact your distributor or SAJ technical support.
B
Brandon SmithAug 30, 2025
What to do if SAJ R5 shows High Temperature Error?
- R
  Rebecca MossAug 31, 2025
  If your SAJ Inverter is showing a High Temperature Error, check if the radiator is blocked and ensure the inverter is operating within an appropriate temperature range. If both these aspects are normal, contact your distributor or SAJ technical support.
X
xmitchellSep 2, 2025
How to fix Null line-to-earth voltage fault on SAJ R5?
- T
  tammycolonSep 2, 2025
  To address a Null line-to-earth voltage fault on your SAJ Inverter, check if the connection of the AC output grounding terminal is stable and reliable. If the grounding connection is secure, contact your distributor or SAJ technical support.
M
mlaneSep 5, 2025
What causes an Overcurrent error on my SAJ R5 Inverter?
- S
  Steve WernerSep 5, 2025
  An Overcurrent error on your SAJ Inverter may be due to connection issues between the inverter and the grid, or instability in the grid voltage. Check the connection status and test the stability of the grid voltage. If these checks are normal, contact your distributor or SAJ technical support.
A
Amber WebbSep 8, 2025
What to do if my SAJ Inverter has Lost Communication?
- P
  perkinspatriciaSep 8, 2025
  If your SAJ Inverter has Lost Communication, check the connection of communication cables between the control board and the display board. If the connections are normal, contact your distributor or SAJ technical support.
C
Christopher TaylorSep 12, 2025
How to resolve Over Bus Voltage error on SAJ R5?
- S
  Steve HamptonSep 12, 2025
  To resolve an Over Bus Voltage error on your SAJ Inverter, check the settings of the solar panel. You can also seek assistance from an SAJ designer. If the solar panel settings are correct, contact your distributor or SAJ technical support.

Summary

Chapter 1 Safety Precautions

Scope of Application

Defines the SAJ on-grid inverters covered by this user manual.

Safety Instructions

Provides critical safety warnings with DANGER, WARNING, CAUTION, and NOTICE indicators.

Target Group

Identifies authorized personnel qualified to install, maintain, and repair the inverter.

Chapter 2 Preparation

Safety Instructions

Key safety guidelines for handling and preparing the inverter before use.

Explanations of Symbols

Illustrates and explains the various symbols used throughout the manual.

Chapter 3 Product Information

Application Scope of Products

Describes the role of R5 series inverters in grid-tied solar power systems.

Specification for Product Model

Explains the naming convention and components of SAJ R5 series inverter models.

Overview of Products

Presents physical dimensions of R5-3K/4K/5K/6K/8K/9K/10K and R5-15K/17K/20K models.

Datasheet

Provides detailed technical specifications for various SAJ R5 series inverter models.

Chapter 4 Instructions for Installation

Safety Instructions

Essential safety measures for installation to prevent electrical shock, fire, and damage.

Pre-installation Check

Steps to verify package integrity and check all necessary assembly parts before installation.

Installation Method and Position

Guidance on selecting the correct mounting method and optimal installation location.

Mounting Procedure

Detailed steps for marking drill holes, installing rear panels, and mounting the inverter.

Chapter 5 Electrical Connection

Safety Instruction for Hot-line Job

Precautions for professional technicians performing electrical connections, emphasizing protective equipment.

Specifications for Electrical Interface

Details the function and layout of all connection ports on the inverter.

AC Side Electrical Connection

Instructions for connecting AC power, including grounding, circuit breakers, and RCDs.

DC Side Connection

Procedures for correctly connecting DC input cables from solar panels using specified connectors.

Communication Connection

Information on establishing communication links via RS485, RS232, DRM, and optional modules.

Start up and Shut down

Steps for safely starting and shutting down the inverter.

Chapter 6 Debugging Instructions

Human-computer Interface

Description of the inverter's indicator lamps (Power, Status, Communication) and their states.

Monitoring Operation

How to monitor inverter status and data using the eSolar APP via Bluetooth or Wi-Fi.

Setting Reactive Power Control

Configuration of power factor and voltage-reactive power (V-Var) settings for grid compliance.

Chapter 7 Fault Code and Troubleshooting

Chapter 8 Routine Maintenance

Inverter Cleaning

Guidelines for cleaning the inverter's exterior and LED indicators with appropriate materials.

Heat Sink Cleaning

Instructions for cleaning the heat sink to maintain optimal ventilation and performance.

Chapter 9 Recycling and Disposal

Chapter 10 Contact SAJ

SAJ Warranty Policy in Australia

Standard Warranty Period

Specifies the duration of the standard warranty for R5 series and other SAJ inverters.

Extension of Warranty

Details how to purchase extended warranty periods and their terms.

Warranty Conditions

Outlines the requirements for submitting a warranty claim, including necessary documentation.

Service after Warranty Expiration

Describes the costs and procedures for maintenance services once the warranty has expired.

Exclusion of Liability

Lists conditions and circumstances that are not covered by the manufacturer's warranty.

Warranty Card

Customer Information

Fields to record customer name, contact details, and location for warranty claims.

Device Information

Fields to record inverter model, serial number, invoice, and commissioning date.

Installer Information

Fields for installer company details, license number, and contact information.

SAJ R5 Series Specifications

General

MPPT	Yes
Display	LCD
Number of MPP Trackers	2
Cooling Method	Natural convection
Type	Grid-tied Inverter
Communication	WiFi, Ethernet, RS485
Operating Temperature Range	-25°C ~ +60°C
Output Voltage Range	230V