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Gree GMV-N280U/A-T - User Manual

Gree GMV-N280U/A-T
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Owner's Manual
Air Conditioners
Models
GMV-N140U/A-T
GMV-N280U/A-T
GMV-N560U/A-T
Gree Electric Appliances, Inc. of Zhuhai
Thank you for choosing Air Conditioners, please read this owner’s manual carefully before
operation and retain it for future reference.
GREE reserves the right to interpret this manual which will be subject to any change due to
product improvement without further notice.
GREE Electric Appliances, Inc. of Zhuhai reserves the final right to interpret this manual. If
you have lost the Owner’s Manual, please contact the local agent or visit www.gree.com or
sent email to global@gree.com.cn or electronic version.
INSTALLATION AND OPERATION MANUAL
FOR AHU-KIT UNIT

Questions and Answers

  • J
    John RamosJul 26, 2025
    Why is my Gree GMV-N280U/A-T Air Conditioner not cooling properly?
    • P
      Patricia ReyesJul 26, 2025
      Several factors can cause a Gree Air Conditioner to have a poor cooling effect. Check if the air filter is dirty or blocked, and clean or replace it if necessary. Make sure that doors and windows are closed, and remove any obstacles from the air intake and outlet of the unit. Reduce the number of heating sources or people in the room. Also, the setting temperature might be too high, or there could be a refrigerant leak, so adjust the temperature and check for leaks. Finally, the indoor temperature sensor might have poor performance, so consider having it checked.
  • N
    Nathan LeeJul 31, 2025
    Why is my Gree Air Conditioner not heating well?
    • J
      Jean PhillipsJul 31, 2025
      A Gree Air Conditioner might not heat well for several reasons: check if the air filter is dirty or blocked and clean or replace it. Ensure that doors and windows are closed. Adjust the temperature setting to a higher level. There might be refrigerant leakage, which requires checking and repair. If the outdoor temperature is lower than -5?, consider alternate heating solutions. Finally, abnormal operation of the control system can cause this, so contact a technician for inspection.
  • B
    Brian DanielsAug 6, 2025
    What to do if my Gree GMV-N280U/A-T Air Conditioner won't start?
    • D
      danielwilsonAug 6, 2025
      If your Gree Air Conditioner won't start, begin by checking the power supply. If the circuit breaker has tripped, reset it. Ensure that the circuit voltage is within the acceptable range. Verify that the ON/OFF key is in the start position. If these steps don't resolve the issue, there may be a failure in the control system, and you should consult a technician for repair.
  • A
    Alejandro LloydAug 11, 2025
    Why does my Gree Air Conditioner stop after running for a while?
    • T
      Teresa ReyesAug 12, 2025
      Your Gree Air Conditioner might stop running after a while due to several reasons. There might be an obstacle in front of the condenser, so remove any obstructions. There could be an abnormal operation of the control system, in which case you should contact a technician for inspection. Also, if you are using cooling mode and the outdoor temperature is higher than 43?, wait for the temperature to drop or switch to a different mode.
  • M
    Michael BakerAug 18, 2025
    What to do if indoor fan doesn’t start up during heating in Gree Air Conditioner?
    • X
      xhannaAug 18, 2025
      If the indoor fan of your Gree Air Conditioner doesn’t start during heating, it could be due to several reasons: the tube sensor might be improperly located, so reposition it correctly. Ensure the tube sensor is properly inserted. The wiring of the tube sensor could be broken, so repair or replace it. Finally, there could be electricity leakage of the capacitor, in which case you should replace the capacitor.

Summary

User Information and Disposal

User Notice

Important user guidelines for safe operation and maintenance.

Disposal Guidelines

Instructions for responsible product disposal in compliance with environmental regulations.

Safety Precautions

Installation and Operation Procedures

Follow manual instructions for installation and operation to ensure safety.

Professional Installation and Wiring

Ensure qualified technicians perform installation and all wiring is correctly done to prevent hazards.

Refrigerant and Environmental Handling

Handle refrigerant safely, ensure proper ventilation, and protect from environmental damage.

Product Introduction

Component Identification

Identifies and labels the main parts of the AHU-KIT system.

System Connection Diagram

Illustrates the general connection layout of the AHU-KIT system components.

Preparations for Installation

Pre-Installation Checks and R410 A Safety

Critical checks before installation, including R410A system requirements and safety.

Standard Fittings and Unit Selection Criteria

Lists standard fittings and provides criteria for selecting air handling and AHU-KIT units.

Installation Instructions

Unit Dimensions and Installation Space

Details on unit dimensions and required clearance for installation and maintenance.

Piping Installation and Connections

Guidelines for piping installation, connection, selection, and brazing procedures.

Component Installation (EXV, Control Box, Thermistors)

Instructions for installing EXV, control box, and thermistors with necessary precautions.

Cable and Controller Installation

Procedures for connecting EXV cables, wired controllers, and ensuring proper wiring.

Wire Connection

Wiring Board Terminals

Instructions on connecting wires to terminals on the wiring board using appropriate methods.

Power and Communication Wiring

Procedures for connecting power cords and communication wires between units.

Wired Controller Network Connection

Guidance on connecting wired controllers and establishing networks for indoor units.

Operation and Maintenance

Pre-Operation Checks

Essential checks and reading of manuals before initiating unit operation.

Test Operation and Maintenance Procedures

Procedures for test operation, routine maintenance, and seasonal checks.

Table of Error Codes for Indoor Unit

Troubleshooting

Troubleshooting Common Issues

Common phenomena and their corresponding troubleshooting steps for unit malfunctions.

Gree GMV-N280U/A-T Specifications

General IconGeneral
BrandGree
ModelGMV-N280U/A-T
CategoryAir Conditioner
LanguageEnglish

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