Maxima 3KVA - User Manual

Questions and Answers

J
janet74Aug 6, 2025
What to do if the Maxima Inverter buzzer beeps continuously and the red LED is on?
- J
  Jesse DodsonAug 6, 2025
  If the buzzer beeps continuously and the red LED is on, it could indicate several issues: * **Overload error:** Reduce the connected load by switching off some equipment. * **Output short circuit:** Check if wiring is connected well and remove abnormal load. * **High temperature:** If you have a 1-3KVA model, check whether the air flow of the unit is blocked or whether the ambient temperature is too high. * **High battery voltage:** Check if the specifications and quantity of batteries meet the requirements. * **Fan fault:** Replace the fan. * **Output abnormal:** Reduce the connected load. * **Battery issue:** If the battery is connected well, please return to repair center.
M
Matthew MckinneyAug 12, 2025
Why Maxima 3KVA has no response after power on?
- D
  Dale SimmonsAug 12, 2025
  If there is no response after powering on your Maxima Inverter, it could be due to the following reasons: * The battery voltage is far too low. In this case, check if the batteries and the wiring are connected well, recharge the battery, or replace the battery. * The battery polarity is connected reversed. In this case, check if the batteries and the wiring are connected well, recharge the battery, or replace the battery.
J
Jodi HigginsAug 18, 2025
How to fix Maxima Inverter that shuts down automatically during startup?
- C
  Carlos JohnsonAug 18, 2025
  If your Maxima Inverter shuts down automatically during the startup process, it is likely because the battery voltage is too low (less than 1.91V/Cell). To resolve this, try to recharge the battery. If the problem persists, replace the battery.
T
tdiazAug 23, 2025
Why Maxima 3KVA works in battery mode when mains exist?
- N
  nathan79Aug 23, 2025
  If your Maxima Inverter continues to operate in battery mode even when mains power is available, there are several potential causes: * The input protector may be tripped. Check if the AC breaker is tripped and the AC wiring is connected well. * There may be insufficient quality of AC power (from shore or generator). Check if the AC wires are too thin or too long, and verify that the generator (if used) is working correctly or if the input voltage range setting is correct. * Change output source priority to Utility first.
M
Melissa DonovanAug 30, 2025
What to do if internal relay is switched on and off repeatedly on Maxima 3KVA Inverter?
- B
  benjaminwilliamAug 30, 2025
  If the internal relay switches on and off repeatedly when you turn on the Maxima Inverter, it indicates that the battery is disconnected. Check if the battery wires are connected well.

Summary

Manual Overview

Manual Purpose

Details the manual's objective, covering assembly, installation, operation, and troubleshooting procedures.

Manual Scope

Outlines the manual's coverage, including safety, installation guidelines, tools, and wiring information.

General Safety Precautions

Product Introduction

Key Product Features

Highlights the inverter's core functionalities, such as pure sine wave, solar charge controller, and AVR.

Hybrid Power System Diagram

Illustrates the basic application of the inverter within a hybrid power system setup.

Unit Installation Guide

Package Contents and Inspection

Lists the items included in the inverter package and instructs on initial inspection.

Wall Mounting Guidelines

Provides essential considerations and steps for securely mounting the inverter on a wall.

Desktop Configuration Steps

Details the procedure to convert the inverter from wall-mount to a desktop form factor.

Battery Connection Procedures

Battery Cable Sizing and Torque

Specifies recommended battery cable wire sizes and terminal torque values for 3KVA and 5KVA models.

AC Wiring and Connections

AC Wire Gauge and Torque Specs

Recommends appropriate AC wire gauge and torque values for input/output connections.

PV Module Connection Guide

PV Module Selection Parameters

Outlines key parameters like Voc and Vmp for selecting suitable PV modules.

Communication Port Setup

Connecting the Inverter to a PC

Explains how to connect the inverter to a computer using communication cables and install monitoring software.

Unit Operation Basics

Starting and Stopping the Unit

Details the simple procedure for turning the inverter on and off using the On/Off switch.

Front Panel Controls and Indicators

Describes the function of LED indicators and keys on the inverter's operation panel.

Understanding LCD Display Icons

Input;Output and Battery Information Icons

Explains the meaning of various icons displayed on the LCD for input, output, and battery status.

Configuring Unit Settings via LCD

Configuring Output Source Priority (Prog 01)

Allows setting priority for Solar, Utility, or SBU (Solar-Battery-Utility) power sources.

Setting Max Charging Current (Prog 02)

Enables configuration of the total charging current for utility and solar chargers.

Selecting Battery Type (Prog 05)

Option to select battery chemistry (AGM, Flooded, User-Defined) affecting charging parameters.

Auto Restart Configuration (Progs 06;07)

Sets whether the inverter automatically restarts after overload or over-temperature events.

Battery Equalization Parameter Setup (Progs 33-37)

Configures equalization voltage, time, interval, and activation for 5KVA models.

Customizing LCD Display Information

Cycling Through Displayable Information

Explains how to use the SELECT key to switch displayed information on the LCD screen.

Inverter Operating Modes Explained

Standby, Power Saving, and Fault Modes

Describes inverter behavior in standby, power saving, and fault conditions.

Troubleshooting Fault Codes

Fault Code Reference Table

Lists fault codes, their descriptions, and corresponding icon indicators for diagnosing issues.

Warning Signals and Indicators

Audible and Visual Warning Alerts

Details warning events, their audible alarms, and associated icon flashing patterns.

Battery Equalization Process (5 KVA)

Applying Battery Equalization Function

Instructions on enabling battery equalization via monitoring software and programs.

Equalization Charging Duration

Explains how equalization time and voltage are managed, including timeout conditions.

Technical Specifications

Line Mode Technical Details

Provides detailed specifications for the inverter's performance in line mode.

Inverter Mode Technical Details

Lists technical specifications related to the inverter's functionality and DC input.

Charge Mode Technical Details

Details specifications for both utility and solar charging modes, including algorithms.

General Troubleshooting Guide

Common Problems and Solutions

A table outlining common issues, their causes, and recommended solutions for the inverter.

Parallel Operation Guide

Parallel Operation Overview

Introduces parallel operation modes and supported configurations for multiple inverters.

Installing the Parallel Board

Step-by-step instructions for installing the parallel board onto the 5K model.

Mounting Multiple Inverters

Guidance on mounting multiple units in parallel for optimal airflow and stability.

Parallel System Wiring Recommendations

Specifies cable size requirements and connection principles for parallel inverter wiring.

Single Phase Parallel Connection Diagrams

Illustrates power and communication connections for two and three inverters in single-phase parallel.

Three Phase Operation Diagrams

Shows power and communication wiring for supporting three-phase equipment with multiple inverters.

PV Connection Notes for Parallel Systems

Important considerations for connecting PV modules when units are operating in parallel.

Parallel System LCD Configuration

Setting Parallel AC Output Mode (Prog 28)

Configures the AC output mode (single, parallel, L1/L2/L3 phase) for the parallel system.

Parallel PV Input Logic (Prog 30)

Defines how PV input is judged for parallel systems based on single or all inverter status.

Commissioning Parallel Systems

Commissioning Single Phase Parallel Setup

Steps required to correctly commission a single-phase parallel inverter system.

Commissioning Three Phase Equipment Setup

Procedure for commissioning a parallel system supporting three-phase equipment.

Troubleshooting Parallel Systems

Common Parallel Operation Faults and Solutions

Addresses specific fault codes and issues encountered in parallel inverter configurations.

Backup Time Estimation Table

Estimated Backup Time vs. Load and Battery Capacity

Provides tables showing approximate backup durations for different loads and battery configurations.

Maxima 3KVA Specifications

General

Brand	Maxima
Model	3KVA
Category	Inverter
Language	English