SAJ R6 Series User Manual (English)

Questions and Answers:

D
Daniel HarperAug 21, 2025
What to do if my SAJ Inverter shows an AC Voltage Error?
- M
  Michael RobertsonAug 21, 2025
  If your SAJ Inverter displays an AC Voltage Error, check the grid voltage, the connection between the inverter and the grid, and the inverter's on-grid standard settings. If the grid voltage is outside the regulated range, consult with local grid workers about adjusting the voltage or changing the regulated voltage value. If the grid voltage is within the allowed range and the error persists, contact your distributor or SAJ technical support.
M
Michael OconnorAug 22, 2025
How to troubleshoot GFCI Error on SAJ Inverter?
- H
  Holly AliAug 23, 2025
  To troubleshoot a GFCI Error on your SAJ inverter, 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 secure. If the problem persists after these checks, contact your distributor or SAJ technical support.
L
Linda SalinasAug 25, 2025
Why does my SAJ Inverter show a Grid Lost Error?
- T
  Timothy GreenAug 25, 2025
  If your SAJ Inverter is showing a Grid Lost Error, check the connection status between the AC side of the inverter and the grid. If the connection is correct and the error persists, contact your distributor or SAJ technical support.
M
Manuel SmithAug 26, 2025
What to do if my SAJ R6 displays a Frequency Error?
- J
  Jason RomeroAug 27, 2025
  If your SAJ Inverter displays a Frequency Error, check the country setting and the frequency of your local grid. If these settings are correct and the problem continues, contact your distributor or SAJ technical support for assistance.
H
hfloresAug 27, 2025
What does ISO Error mean on my SAJ Inverter and how can I fix it?
- D
  Danielle JohnsonAug 27, 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 verify the grounding of the inverter. If the error persists, contact your distributor or SAJ technical support.
S
Samantha MontgomeryAug 29, 2025
How to resolve Over Bus Voltage on a SAJ R6?
- G
  Gina WilliamsAug 29, 2025
  To resolve an Over Bus Voltage error on your SAJ Inverter, check the settings of the solar panel. You may want to consult with a SAJ designer for assistance. If the issue persists, contact your distributor or SAJ technical support.
J
Jill PadillaAug 31, 2025
Why is my SAJ R6 showing a High Temperature Error?
- K
  Kathryn EstradaAug 31, 2025
  If your SAJ Inverter is showing a High Temperature Error, check whether the radiator is blocked and whether the inverter is operating in an environment with excessively high or low temperatures. If these checks do not resolve the issue, contact your distributor or SAJ technical support.
J
Jamie HurstSep 1, 2025
What to do for Lost Communication error on SAJ R6 Inverter?
- B
  Beth MilesSep 2, 2025
  To address a Lost Communication error on your SAJ Inverter, check the communication cable connections between the control board and the display board. If the connections are secure and the error persists, contact your distributor or SAJ technical support.
M
mannwilliamSep 3, 2025
How to fix Null line-to-earth voltage fault on SAJ R6 Inverter?
- D
  David OliverSep 3, 2025
  To fix 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 connection is secure and the problem persists, contact your distributor or SAJ technical support.
S
Stephen DaughertySep 5, 2025
What should I do if my SAJ R6 shows a Relay Error?
- J
  Jaime CaldwellSep 5, 2025
  If your SAJ Inverter frequently shows a Relay Error, contact your distributor or SAJ technical support for assistance.

SAJ R6 Series Specifications

General

Category	Inverter
Number of MPPTs	2
Protection Rating	IP65
THDi	< 3%
Cooling	Natural Convection
Communication	RS485, Wi-Fi, Ethernet
Rated AC Voltage	230V
AC Voltage Range	180 V - 280 V
Rated Grid Frequency	50 Hz / 60 Hz
Power Factor	0.8 leading - 0.8 lagging
DC Switch	Integrated
Protection	DC Reverse Polarity Protection, AC Short Circuit Protection
Operating Temperature Range	-25°C to 60°C

Summary

Preface

Chapter 1 Safety Precautions

1.1 Scope of Application

Defines the scope of the user manual for SAJ on-grid inverters.

1.2 Safety Instructions

Explains safety symbols like Danger, Warning, Caution, and Notice.

1.3 Target Group

Specifies qualified electricians as the target audience for installation and maintenance.

Chapter 2 Preparation

2.1 Safety Instructions

Details crucial safety instructions regarding electrical hazards and procedures.

2.2 Explanations of Symbols

Explains various symbols used in the manual with their meanings and descriptions.

Chapter 3 Product Information

3.1 Application Scope of Products

Describes the application of R6 series grid-tied inverters in solar power systems.

3.2 Specification for Product Model

Explains the nomenclature and coding system used for R6 series product models.

3.3 Overview of products

Presents the physical dimensions of R6 series inverter products with figures.

3.4 Datasheet

Provides detailed technical specifications for R6-15K/17K/20K/22K/25K-T2-32 models.

Chapter 4 Instructions for Installation

4.1 Safety Instructions

Provides critical safety warnings for installation, highlighting electrical shock and fire hazards.

4.2 Pre-installation Check

Outlines essential checks before commencing inverter installation, including package and parts verification.

4.3 Installation Method and Position

Guides on selecting suitable mounting methods and installation locations for optimal performance.

4.4 Mounting Procedure

Details the step-by-step process for mounting the inverter, including drilling and fastening.

Chapter 5 Electrical Connection

5.1 Safety Instruction for Hot-line Job

Provides essential safety guidelines for performing electrical connections, emphasizing professional handling.

5.2 Specifications for Electrical Interface

Details the various electrical interfaces of the inverter with corresponding codes and names.

5.3 AC Connection

Specifies recommended cable sizes and connection procedures for AC power.

5.4 DC Side Connection

Provides specifications and procedures for connecting DC cables to the inverter.

5.5 Communication Connection

Explains the RS485 and RS232 communication interfaces and pin definitions.

Chapter 6 Debugging Instructions

6.1 Introduction of HMI (Human-Machine Interface)

Introduces the HMI, describing its display, status, and LED indicators.

6.2 Monitoring Operation

Explains how to monitor the inverter's status and data using the eSolar APP, including nearby and remote monitoring.

Chapter 7 Fault Code and Troubleshooting

Error Code

Lists various error codes displayed by the inverter and their corresponding explanations.

Troubleshooting

Provides general troubleshooting methods for common inverter fault information.

Chapter 8 Recycling and Disposal

Chapter 9 Contact SAJ

SAJ Warranty Policy

1.1 Standard Warranty Period

Defines the standard warranty duration for SAJ inverters, based on shipment or invoice date.

1.2 Extension of Warranty

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

1.3 Warranty Conditions

Outlines the conditions and required documentation for claiming warranty service.

1.4 After receiving above information, SAJ will decide how to proceed the service

Describes SAJ's process for handling service requests after receiving necessary information.

1.5 Service after Warranty Expiration

Details the service charges and procedures for inverters that are out of warranty.

1.6 Exclusion of Liability

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

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SAJ R6 Series User Manual

Table of Contents

Questions and Answers:

SAJ R6 Series Specifications

Summary

Preface

Chapter 1 Safety Precautions

1.1 Scope of Application

1.2 Safety Instructions

1.3 Target Group

Chapter 2 Preparation

2.1 Safety Instructions

2.2 Explanations of Symbols

Chapter 3 Product Information

3.1 Application Scope of Products

3.2 Specification for Product Model

3.3 Overview of products

3.4 Datasheet

Chapter 4 Instructions for Installation

4.1 Safety Instructions

4.2 Pre-installation Check

4.3 Installation Method and Position

4.4 Mounting Procedure

Chapter 5 Electrical Connection

5.1 Safety Instruction for Hot-line Job

5.2 Specifications for Electrical Interface

5.3 AC Connection

5.4 DC Side Connection

5.5 Communication Connection

Chapter 6 Debugging Instructions

6.1 Introduction of HMI (Human-Machine Interface)

6.2 Monitoring Operation

Chapter 7 Fault Code and Troubleshooting

Error Code

Troubleshooting

Chapter 8 Recycling and Disposal

Chapter 9 Contact SAJ

SAJ Warranty Policy

1.1 Standard Warranty Period

1.2 Extension of Warranty

1.3 Warranty Conditions

1.4 After receiving above information, SAJ will decide how to proceed the service

1.5 Service after Warranty Expiration

1.6 Exclusion of Liability

Related product manuals