MPP Solar LV2424 - User Manual

Questions and Answers

K
Kimberly LindseyAug 12, 2025
Why is my MPP Solar Inverter working in battery mode when mains exist?
- C
  Craig TorresAug 12, 2025
  If your MPP Solar Inverter is operating on battery despite mains being available, the following reasons could be the cause: * The input protector may be tripped. Check if the AC breaker is tripped and the AC wiring is properly connected. * The AC power quality might be insufficient due to wiring issues or generator problems. Inspect the AC wires for being too thin or long. If using a generator, verify it's functioning correctly and that the input voltage range setting is correct. * Another potential cause is that the output source priority is not set to Utility first. Change output source priority to Utility first.
J
Joshua VillaAug 18, 2025
What to do if MPP Solar Inverter has no response after power on?
- C
  cjonesAug 18, 2025
  If your MPP Solar Inverter doesn't respond after being powered on, it could be due to the following: * The battery voltage may be too low. Check if the batteries and wiring are well connected, then recharge or replace the battery. * The battery polarity may be reversed. Check if the batteries and wiring are well connected, then recharge or replace the battery.
M
Mary WaltersAug 25, 2025
How to fix MPP Solar Inverter that shuts down automatically during startup?
- A
  Amanda PierceAug 25, 2025
  If your MPP Solar Inverter shuts down automatically during startup, it's likely because the battery voltage is too low (less than 1.91V/Cell). To resolve this, try recharging the battery. If the problem persists, consider replacing the battery.
T
thomaspotterAug 29, 2025
Why does the internal relay of my MPP Solar Inverter switch on and off repeatedly?
- G
  gschneiderAug 30, 2025
  If the internal relay of your MPP Solar Inverter switches on and off repeatedly when turned on, it's likely due to a disconnected battery. Check if the battery wires are properly connected.
G
George CoxNov 4, 2025
What to do if my MPP Solar Inverter buzzer beeps continuously and the red LED is on?
- C
  cmorganNov 5, 2025
  A continuous beep and a red LED on your MPP Solar Inverter indicates several potential issues: * **Overload:** Reduce the load by switching off some equipment. * **Short Circuit:** Check the wiring and remove any abnormal loads. * **Over Temperature:** For 1-3KVA models, ensure the unit's airflow isn't blocked and the ambient temperature isn't too high. * **Battery Issues:** The battery may be over-charged, the voltage may be too high, or the battery may not be connected well or the fuse is burnt. In such cases, check if the specifications and the quantity of batteries meet the requirements. If the battery is connected well, return to repair center. * **Fan Fault:** Replace the fan. * **Output Abnormal:** Reduce the connected load. If the error persists, return to repair cente...

Summary

ABOUT THIS MANUAL

Purpose

Details the manual's objective regarding assembly, installation, operation, and troubleshooting of the unit for future reference.

Scope

Provides safety and installation guidelines, including information on tools and wiring for the inverter/charger.

SAFETY INSTRUCTIONS

Contains critical safety and operating instructions to be read and kept for future reference.

INTRODUCTION

Product Overview

Illustrates and describes the components and functionality of the hybrid PV inverter system.

INSTALLATION

Unpacking and Inspection

Guides users through checking the unit and package contents for any damage before installation.

Preparation

Details the necessary steps to prepare the unit for installation, involving cover removal.

Mounting the Unit

Provides guidelines on selecting an installation location, considering safety, visibility, and heat dissipation.

Battery Connection

Explains the procedure and requirements for safely connecting the battery to the inverter/charger.

AC Input;Output Connection

Details the correct method for connecting AC input power and output to the inverter/charger.

PV Connection

Outlines the process for connecting photovoltaic (PV) modules to the inverter, including module selection criteria.

Communication Connection

Instructs on connecting the inverter to a computer for monitoring software installation and usage.

Dry Contact Signal

Describes the function of the dry contact signal for external devices based on battery voltage levels.

OPERATION

Power ON;OFF

Explains how to turn the unit on and off after proper installation and battery connection.

Operation and Display Panel

Details the front panel components: indicators, function keys, and LCD display for monitoring status.

LCD Display Icons

Provides an explanation of various icons and digital displays on the LCD screen.

Mode operation information

Illustrates different operating modes and their corresponding LCD display indications.

LCD Setting

Guides users through accessing and configuring various operational parameters via the LCD interface.

Display Setting

Describes how to cycle through and view different operational data on the LCD display.

Operating Mode Description

Explains the behavior and LCD display of different operating modes like Standby, Line, and Battery modes.

Warning Indicator

Lists warning codes, their corresponding events, and how they are indicated on the unit.

Faults Reference Code

Provides a reference for fault codes, their descriptions, and the corresponding icons displayed on the unit.

PARALLEL FUNCTION (only for 2.4 KW;3 KW;4 KW;5 KW models)

Introduction

Introduces the inverter's capability for parallel operation in single, two-phase, and three-phase configurations.

Package Contents

Lists the items included in the parallel kit for setting up parallel operation.

Parallel board installation

Provides step-by-step instructions for installing the parallel board onto the inverter unit.

Mounting the Unit

Details the required spacing and mounting configuration for multiple inverters in parallel operation.

Wiring Connection

Specifies the recommended battery cable and terminal sizes for parallel inverter connections.

Parallel Operation in Single phase

Illustrates power and communication connections for parallel operation of two to nine inverters in single phase.

Support 2-phase equipment (only for 2.4 KW model)

Details connection diagrams for supporting 2-phase equipment with the inverters.

Support 3-phase equipment

Provides connection diagrams for supporting 3-phase equipment with the inverters.

PV Connection

Refers to the single unit manual for PV connection and cautions about separate connections for each inverter.

LCD Setting and Display

Explains AC output modes for single, 2-phase, and 3-phase parallel operations via LCD settings.

Fault code display

Lists fault codes related to parallel operation, their events, and corresponding icons.

Commissioning

Details the steps for commissioning parallel systems in single-phase, two-phase, and three-phase configurations.

MPP Solar LV2424 Specifications

General

Model	LV2424
Rated Power	2400W
Nominal DC Input Voltage	24V
Efficiency	90%
Maximum Solar Charge Current	80A
Max PV Input Power	3000W
Transfer Time	10ms
Cooling	Fan
Output Frequency	50/60Hz
Battery Type	Lead-acid or Lithium
Communication	RS232 / USB