Mecer IVR-1200MPPT User Manual (English)

Questions and Answers:

D
Darren PetersAug 5, 2025
What to do if the Mecer Inverter buzzer beeps continuously and the red LED is on?
- M
  Marcus BeckerAug 5, 2025
  A continuous beep and a red LED indicate several potential issues. First, check the wiring and remove any abnormal load, as the output may be short-circuited. Second, if the inverter is overloaded (over 110%), reduce the connected load by switching off some equipment. Other potential causes include output voltage being too high or the battery being over-charged, in which case you should return the unit to the repair center. Also, a fan fault may cause this issue, so the fan should be replaced. Further, check if the air flow of the unit is blocked or the ambient temperature is too high, as the internal temperature of the inverter component may be over 100°C. Finally, ensure the battery voltage isn't too high and that the battery specifications and quantity meet requirements.
J
Jacqueline MartinAug 13, 2025
Why does my Mecer IVR-1200MPPT Inverter work in battery mode even when mains exist?
- B
  Brian WilsonAug 13, 2025
  The Mecer Inverter might be running on battery despite mains being available due to several reasons. The input protector might be tripped, so check if the AC breaker is tripped and the AC wiring is properly connected. Also, insufficient quality of AC power could be the reason, so check if AC wires are too thin or too long, and if a generator is used, ensure it's working correctly and the input voltage range setting is correct. Alternatively, change the output source priority to Utility first.
A
Anthony RamirezAug 19, 2025
What to do if the Mecer IVR-1200MPPT Inverter backup time is shorten when power fails?
- C
  Cassandra WilsonAug 19, 2025
  If the backup time of your Mecer Inverter is shorter than expected during a power failure, it could be due to a low battery voltage. Charge the unit for at least 8 hours. If the battery capacity is still not full after charging for at least 8 hours, check the battery's date code. If the batteries are too old, replace them.
N
Nancy NealAug 28, 2025
How to fix no LED display on Mecer IVR-1200MPPT Inverter when the utility power is normal?
- L
  Luke AndersonAug 28, 2025
  If there's no LED display on the front panel of your Mecer Inverter when the utility power is normal, the battery might not be connected properly. Check the external battery cable and terminal to ensure all battery connections to the unit are correct. If the connections are correct, the battery might be defective, and you should replace it.

Mecer IVR-1200MPPT Specifications

General

Model	IVR-1200MPPT
Surge Power	2400VA
Input Voltage	230 VAC
Input Voltage Range	170-280 VAC
Input Frequency Range	50 Hz/60 Hz (Auto sensing)
Output Voltage	230 VAC
Output Voltage Regulation (Batt. Mode)	±10%
Output Frequency	50 Hz/60 Hz
Waveform	Pure sine wave
Battery Voltage	12 VDC
Floating Charge Voltage	13.5 VDC
Overcharge Protection	15 VDC
MPPT Solar Charge Controller	Yes
Maximum Charging Current	50 A
Cooling	Fan cooling
USB Port	No
Efficiency	90%
Battery Type	Lead Acid
MPPT Max PV Input Power	500W
Protection Features	Overload, short circuit, overcharge, deep discharge

Summary

Introduction

Important Safety Warnings

General Precautions

General precautions for safe operation, avoiding damage, and handling electrical hazards.

Personnel Precautions

Safety measures for personnel working with batteries, including avoiding metal objects and eye contact.

Product Overview

Product Components and Indicators

Overview of product components, including power switch, indicators, LCD display, and connectors.

Installation Guide

Mounting the Unit

Instructions for vertically mounting the inverter unit to a wall surface using key-hole slots.

Connecting to Utility and Charging

Procedure for connecting the inverter to the AC input for utility power and charging.

Connecting to External Battery

Steps for connecting external batteries, including DC breaker installation and cable connections.

Connecting to Solar Panel

Procedure for connecting the inverter to solar panels, including DC breaker installation.

PV Module Selection Guide

Guidelines for selecting PV modules based on voltage, power, and current ratings for optimal performance.

Operation

Powering the Inverter On and Off

Instructions on how to turn the inverter unit on and off using the power switch.

LED Indicators, Function Keys, and Audible Alarms

Description of LED indicators, function keys, and audible alarms for monitoring inverter status and events.

LCD Display Information

Explanation of various LCD display screens, including input source, configuration, output, and battery information.

Configurable Setting Programs

Details of various setting programs for AC input voltage, battery type, charging current, and voltages.

Display Setting and Information

LCD Display Information Breakdown

Details on how selectable information like voltage, frequency, and load is displayed on the LCD screen.

Operating Mode Descriptions

Standby Mode Operation

Description of standby mode, where the inverter is off but can charge batteries via AC bypass output.

Line Mode Operation

Description of line mode, where the unit provides output from mains and charges batteries.

Battery Mode Operation

Description of battery mode, where the unit provides output from battery and PV power.

Fault and Warning Indicators

Fault Code and Event Reference

Reference table for fault codes, their corresponding events, and associated icons.

Warning Indicator Reference

Reference table for warning codes, their corresponding events, and flashing icons.

Troubleshooting

Troubleshooting Common Problems

Guide to solving common problems with the inverter, including backup time, LED indicators, and fault codes.

Specifications

Technical Specifications Overview

Detailed technical specifications for the inverter, covering electrical, physical, and environmental parameters.

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Mecer IVR-1200MPPT User Manual

Table of Contents