SolaX Power X3-20K-TL

Questions and Answers

F
fisherlauraAug 18, 2025
What to do if SolaX Power Inverter shows Grid Over Voltage?
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  Erin JacksonAug 18, 2025
  If the 'Grid Over Voltage' alarm appears on your SolaX Power Inverter, it could be due to the grid voltage exceeding its normal range. If it happens once, it may be due to a temporary grid abnormality and requires no action. If it happens repeatedly, contact your local power station and, with their approval, adjust the electrical protection parameters on the inverter using the mobile app. If the alarm persists, check the AC circuit breaker and terminals to ensure they are connected, and verify that the grid has power.
S
Shannon RodgersAug 20, 2025
What to do if SolaX Power X3-20K-TL Inverter displays Residual Current Abnormal?
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  Justin BoltonAug 20, 2025
  If your SolaX Power Inverter displays a 'Residual Current Abnormal' message, it means the insulation resistance against the ground at the input side has decreased, causing high residual current. If this occurs once, it might be due to a temporary external circuit issue, and the inverter should return to normal after the fault is cleared. If it happens repeatedly or persists, check the insulation resistance against the ground of the PV strings.
A
acostaamyAug 22, 2025
Why SolaX Power Inverter is off grid?
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  Peter PattersonAug 23, 2025
  Your SolaX Power Inverter might be off-grid due to a power grid fault or a tripped DC switch. Wait for the power to be restored. Also, turn the DC switch to the ON position.
C
Crystal RowlandAug 25, 2025
What to do if SolaX Power X3-20K-TL Inverter shows PV Over Voltage?
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  Nancy SuarezAug 26, 2025
  If your SolaX Power Inverter shows a 'PV Over Voltage' error, it means the input voltage from the PV modules is too high. Check the number of PV modules connected and adjust as needed.
J
Jose CarterAug 27, 2025
What to do if SolaX Power X3-20K-TL Inverter displays PV Strings Abnormal?
- R
  Ryan PerezAug 27, 2025
  If your SolaX Power Inverter displays a 'PV Strings Abnormal' message, it could be because the PV strings have been shielded for an extended period or are deteriorating. First, check if the PV string is shielded. If the string is clean and unshielded, inspect the PV modules for signs of aging or deterioration.
D
davidbaxterAug 29, 2025
What to do if SolaX Power X3-20K-TL Inverter displays Insulation Resistance Abnormal?
- C
  Calvin WhiteAug 29, 2025
  If your SolaX Power Inverter displays 'Insulation Resistance Abnormal', it indicates a short circuit between the PV strings and the protection ground, or that the PV strings are in a long-term moist environment. Check the insulation resistance against the ground for the PV strings and fix any short circuits. If the insulation resistance is less than the default value in a rainy environment, set Insulation resistance protection on the mobile app.
K
kathleen70Sep 1, 2025
What to do if SolaX Power X3-20K-TL Inverter shows PV Under Voltage?
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  Matthew MorrisonSep 1, 2025
  If your SolaX Power Inverter shows 'PV Under Voltage', it means the input voltage from the PV modules is below the inverter's protection value. This can happen when sunlight is weak, in which case no action is needed. However, if it occurs when sunlight is strong, check for short circuits or open circuits in the PV strings.
P
Patricia RaySep 3, 2025
What to do if my SolaX Power X3-20K-TL's remote monitor displays zero power generation?
- B
  Brianna LunaSep 3, 2025
  This issue is caused by a communications outage. If you're using a modem or other data logger, try rebooting it.
K
Karen GarciaSep 5, 2025
What to do if SolaX Power Inverter shows BUS Under Voltage?
- M
  Melissa JenningsSep 6, 2025
  If your SolaX Power Inverter displays a 'BUS Under Voltage' alarm, it indicates an abnormal internal energy control imbalance, triggered by sharp changes in PV strings or grid working conditions. If the alarm occurs occasionally, the inverter should automatically recover.
C
Christina HurstSep 8, 2025
Why SolaX Power Inverter shows Zero power generation and Yellow alarm light illuminating in remote monitor system?
- L
  Leslie SmithSep 8, 2025
  This issue is caused by a communications outage. If you're using a modem or other data logger, try rebooting it.

Summary

Forward

Application Model

Defines the types of grid-tied PV string inverters covered by this manual.

Intended Audience

Specifies that the manual is for PV inverter operating personnel and qualified electrical technicians.

Symbol Conventions

Safety Precautions

Personnel Safety

Outlines safety requirements for qualified technicians and operators involved with the inverter.

PV Inverter Protection

Details safety aspects regarding inverter protection, including warning signs and nameplates.

Installation Safety

Covers crucial safety considerations and requirements for the inverter installation process.

Electrical Connections Safety

Provides essential safety guidelines and warnings for making electrical connections.

Operating and Commissioning Safety

Highlights safety precautions to be followed during inverter operation and commissioning.

Maintenance Safety

Specifies critical safety measures to be observed during inverter maintenance procedures.

Additional Safety Information

Offers advice for handling unforeseen risks and issues encountered during inverter operation.

Overview of the Inverter

Functional Models

Explains the inverter's core functions and variations across different models.

Network Application

Details how the inverter integrates into grid-tied photovoltaic power systems.

Outline and Dimensions

Presents the physical dimensions and external features of the inverter.

Working Modes

Explains the different operational states of the inverter: standby, operating, and shutdown.

Storage

Installation

Checking the Outer Packing

Steps to verify the integrity and completeness of the inverter packaging upon receipt.

Moving the Inverter

Guidelines for safely relocating the inverter to its designated installation position.

Identify the PV Inverter

How to identify the specific inverter model using its nameplate information.

Installation Requirements

Specifies the necessary environmental and physical conditions for inverter installation.

Support-mounting the Inverter

Details the procedure for mounting the inverter using a support bracket.

Installation Self-check

Checklist for verifying correct and secure inverter installation before operation.

Electrical Connections

Connecting Protection Ground (PGND) Cables

Instructions for properly connecting the protective ground (PGND) cable.

Connecting AC Output Cables

Procedure for safely connecting the AC output cables to the inverter.

Connecting the PV Strings

Step-by-step guide for connecting the photovoltaic strings to the inverter.

Connecting Communication Cables

Guide for connecting various communication interfaces like WiFi, GPRS, RS485.

Installation Verification

Final checks to ensure all electrical connections and installation aspects are correct.

System Operation

Powering ON the Inverter

Steps to safely power on the inverter and observe status indicators.

Powering OFF the Inverter

Procedures for safely powering off the inverter and precautions afterward.

User Interface

Maintenance

Routine Maintenance

Schedule and tasks for regular maintenance checks of the inverter.

Inverter Troubleshooting

Guides for diagnosing and resolving common inverter fault alarms and issues.

Removing the Inverter

Step-by-step instructions for safely disconnecting and removing the inverter.

Quality Guarantee

Quality Terms

Details the terms and conditions of the product warranty period.

Liability Waiver

Outlines situations where warranty or liability for the inverter is void.

Disposal of the Inverter

Technical Specifications