Gree GMV series - User Manual

Other manuals for Gree GMV series

User Manual32 pages

Questions and Answers

D
David SpearsAug 18, 2025
What to do if my Gree Inverter unit doesn’t work?
- J
  Jamie SandersAug 18, 2025
  If your Gree Inverter unit isn't working, there are several potential causes: * A fuse or circuit breaker may be cut off. In this case, replace the fuse or reset the circuit breaker. * There may be a power failure. If so, restart the unit when power is restored. * The power supply might not be connected; ensure the power is connected. * The remote controller's power might be low, so replace the battery. * The remote controller might be out of range. Ensure you are within the 8m control range.
B
Brandi ForbesAug 21, 2025
Why is my Gree GMV not cooling or heating properly?
- J
  John BondAug 21, 2025
  If your Gree Air Conditioner is not cooling or heating properly, there are several potential causes. Make sure that neither the air intake nor the outlet of either the indoor or outdoor unit is blocked. You may also want to check the temperature setting, fan speed and wind direction using the remote controller. Ensure that doors and windows are closed, and curtains or louvers are drawn to block direct sunlight. Reduce the number of heat sources in the room, and clean the filter if it's dirty.
A
Alexander WolfAug 23, 2025
Why is my Gree GMV Air Conditioner not cooling well?
- J
  judith95Aug 23, 2025
  Several factors can cause a poor cooling effect. The filter might be dirty, so try cleaning or replacing it. The room might have too much heat, so reduce the heat load. Ensure doors and windows are closed. Check that the indoor unit's inlet and outlet are not blocked. The set temperature could be too high, so lower it. Finally, the refrigerant level might be low due to leakage, so check and refill if needed.
A
Amy HendersonAug 26, 2025
Why is my Gree GMV not heating properly?
- P
  ptaylorAug 26, 2025
  A poor heating effect can be caused by several issues. The filter might be dirty, so clean or replace it. An open door or window could be the problem, so close them. The set temperature might be too low, so increase it. Lastly, the refrigerant may be insufficient, possibly due to a leak, so check and refill it if necessary.
B
Brittney McbrideAug 27, 2025
Why is my Gree Inverter having abnormal cooling or heating?
- V
  Vanessa HortonAug 27, 2025
  If your Gree Inverter is providing abnormal cooling or heating, check the following: * Ensure that the air inlet or outlet of both the indoor and outdoor units are not blocked, and clear any obstructions. * Verify that the temperature setting is correct by adjusting it on the remote or wired controller. * Make sure the fan speed isn't set too low; adjust it using the remote or wired controller. * Confirm the wind direction is correctly set via the remote or wired controller. * Close any open doors or windows. * Draw curtains or louvers to block direct sunshine. * Reduce the number of heat sources in the room. * Clean the filter if it is blocked and dirty.
F
Frank RitterAug 30, 2025
How to troubleshoot a Gree Air Conditioner that doesn't run?
- M
  mckeemichaelAug 30, 2025
  If your Gree Air Conditioner isn't running, several factors could be at play. First, ensure it's properly connected to a power supply. Check that the voltage is within the recommended range. A broken fuse or tripped breaker could also be the culprit, so replace the fuse or reset the breaker. For remote controlled units, try replacing the batteries in the remote or ensure you are within the 8m control range.
P
paulmonroeSep 1, 2025
Why does the Gree GMV indoor unit still run after I switch it off?
- C
  Carol WarrenSep 1, 2025
  The indoor fan motor in your Gree Air Conditioner will continue to run for 20-70 seconds after being switched off. This is to make good use of excess cooling and heating and prepare the unit for the next operation.
C
cbarnettSep 3, 2025
What to do if my Gree Air Conditioner won't start?
- S
  Samantha WrightSep 3, 2025
  If your unit doesn’t start, first check the power supply connection. If that's fine, inspect for any electrical leakage that might be causing the circuit breaker to trip. Also, make sure the input voltage is sufficient. If none of these work, contact a service center for a main PC-board inspection.
J
Jaclyn ReynoldsSep 6, 2025
What to do if Gree GMV Air Conditioner stops after running for a while?
- C
  craig08Sep 6, 2025
  If the unit stops after running, check if the inlet or outlet of either the outdoor unit (ODU) or indoor unit (IDU) is blocked by an obstacle. If so, remove the obstacles.
L
Larry BellSep 8, 2025
What to do if Gree GMV runs but stops immediately?
- D
  davisbrettSep 8, 2025
  If your Gree Air Conditioner starts but stops immediately, it might be due to a blocked air intake or outlet on either the indoor or outdoor unit. Check both units and remove any obstructions.

Summary

Preface and Safety Information

Safety Symbols and Warnings

Explains safety alert symbols (WARNING, CAUTION, NOTICE) and general safety rules.

Safety Precautions

General Safety Warnings

Lists critical safety instructions for unit operation and installation.

Product Overview

Product Introduction

Details the GMV DC Inverter VRF system and its features.

Outdoor Unit Combinations

Shows possible combinations of single and multiple outdoor units.

Outdoor and Indoor Unit Combinations

Details ODU models and their maximum connectable IDU units.

Installation Preparation

Working Temperature Range

Specifies the operational temperature limits for cooling and heating.

Standard Parts

Lists the standard parts supplied with the outdoor unit.

Installation Site Requirements

Space Dimension for Outdoor Units

Provides diagrams for required space around single, dual, and three-module units.

Space Dimension for Three-Module Units

Details required clearances for three-module outdoor unit installations.

Space Dimension for Outdoor Unit Top

Specifies clearances required above the outdoor unit based on obstructions.

Space Dimension for Multiple-Module Units

Shows required clearances for multi-module outdoor unit configurations.

Seasonal Wind Considerations

Guidance on installing units considering seasonal wind direction.

Snowfall Installation Considerations

Advice on installing units to prevent snow accumulation issues.

Piping and Installation Foundation

Piping Work Requirements

Specifies pipe diameter and wall thickness for R410A systems.

ODU Foundation Requirements

Details requirements for the concrete foundation of the outdoor unit.

Outdoor Unit Specifications

Physical Dimensions and Mounting Holes

Shows outline dimensions and mounting hole details for specific models.

Dimensions for 96;120;144 WM Models

Provides physical dimensions for GMV-96WM, GMV-120WM, and GMV-144WM models.

Dimensions for 168 WM Model

Details the physical dimensions for the GMV-168WM/B1-F(U) model.

Piping Connection Details

Schematic Diagram of Piping Connection

Illustrates the layout of refrigerant piping for the system.

Schematic Diagram of Piping Sequence

Shows piping sequences for different outdoor unit models.

Connection Pipe Among Outdoor Modules

Diagrams and guidelines for connecting multiple outdoor units.

Piping Specifications and Limitations

Allowable Pipe Length and Drop Height

Defines limits for pipe length and height differences between units.

Piping Length Differences and Adjustments

Specifies pipe length differences and adjustment tables.

Pipe between ODU and First Manifold

Details pipe sizes for connecting outdoor units to the first manifold.

Pipe Between Manifolds from Basic Modules

Specifies pipe sizes between manifolds based on upstream module capacity.

Pipe from Manifold to Indoor Unit

Details pipe sizes from ODU to the first indoor manifold.

Pipe Between Manifolds (Indoor Side)

Specifies pipe sizes for connections between indoor manifolds.

Pipe Between Indoor Unit and Manifold

Details pipe sizes for connections between indoor units and manifolds.

Piping Components

Manifold Selection at Indoor Unit Side

Guidance on selecting manifolds based on downstream indoor unit capacity.

Manifold Installation Types

Describes Y-type and T-type manifold installation methods and positions.

Connection Pipe Installation

Precautions for Connection Pipe Installation

Key safety and installation guidelines for connecting refrigerant pipes.

Manifold Fixing Points and Layout

Specifies fixing points for Y-type manifolds and layout requirements.

Pipeline Thermal Insulation

Instructions for insulating refrigerant pipes for efficiency and safety.

Refrigerant Handling

Air Purging Procedure

Steps for removing air and moisture from the refrigerant system.

Additional Refrigerant Charging Calculation

Guides on calculating and adding refrigerant based on system configuration.

Precautions on Refrigerant Leakage

Safety measures and concentration limits to prevent hazards from refrigerant leaks.

Electrical Wiring

Wiring Precautions

General safety rules and considerations for electrical wiring.

Power Cord Specifications and Wiring

Details on power cord sizing, protection, and connection requirements.

Power Cord Connection Steps

Step-by-step instructions for connecting the external power cord.

System Communication

Communication System Overview

Describes the communication network between ODU, IDU, and controllers.

Communication Modes

Explains different communication modes and connection methods.

Communication Connection Modes (Series vs. Star)

Illustrates correct and incorrect wiring methods for communication lines.

Communication Address Setup

Details auto-addressing technology and manual settings for controllers.

System Communication Connections

IDU and ODU Communication Connection

Graphics showing how to connect IDUs and ODUs for communication.

IDU and Wired Controller Communication

Illustrates various ways to connect wired controllers to IDUs.

Duct IDU to Light Board Receiver Connection

Describes how to connect duct type IDUs to light board receivers.

Central Controlling Units Communication

Diagrams for connecting central control systems to VRF units.

External Electrical Wiring Diagrams

Single Unit External Wiring Diagram

Shows the wiring diagram for a single outdoor and indoor unit setup.

Modular Connection External Wiring Diagram

Illustrates wiring diagrams for modular outdoor and indoor unit configurations.

Post-Installation Checks and Trial Run

Installation Check Items

Checklist of items to verify after installation before trial run.

Trial Run Preparation and Notices

Guidance on preparing for and executing the trial run.

Trial Run Notices

Important notices and conditions for performing the trial run.

Debugging Procedures

Debugging Progress Stages

Details the sequence and meaning of LED indicators during debugging.

Debugging Progress Stages (Continued)

Further explanation of LED indicators and error codes during debugging.

Debugging Operation Modes

Describes direct and PC-based debugging methods and steps.

Debugging Steps and Manual Confirmation

Details manual confirmation steps for modules and IDUs during setup.

Debugging Progress: Communication and Component Checks

Covers internal communication and outdoor component checks during debugging.

Debugging Progress: Indoor Components and Compressor Preheat

Checks for indoor components and compressor preheating status.

Debugging Progress: Refrigerant and Valve Status

Evaluates refrigerant levels and outdoor valve status before startup.

Debugging Startup Confirmation and Mode Selection

Confirms startup readiness and selects cooling/heating mode.

Debugging Completion and Standby

Indicates when debugging is finished and the system enters standby.

Operational Parameter Reference

Normal Operational Parameter Reference

Provides reference values for judging normal operation of system parameters.

Operational Parameter Reference (Continued)

Continues the table of reference values for system parameters.

Troubleshooting Common Malfunctions

Troubleshooting Guide

Lists common issues, their reasons, and suggested measures for resolution.

Circumstances Not Considered Malfunctions

Describes normal operating sounds or conditions that may seem like malfunctions.

Error Codes

Indoor Unit Error Codes

Lists error codes and their corresponding malfunctions for indoor units.

Outdoor Unit Error Codes

Lists error codes and their corresponding malfunctions for outdoor units.

Outdoor Unit Error Codes (Continued)

Continues the list of error codes for outdoor units.

Debugging Error Codes

Lists error codes specific to the debugging process.

Maintenance and Care

Outdoor Heat Exchanger Cleaning

Instructions for cleaning the outdoor unit's heat exchanger.

Drain Pipe Maintenance

Guidance on checking and cleaning the condensate drain pipe.

Notice Before Seasonal Use

Pre-seasonal checks to ensure readiness for operation.

Maintenance After Seasonal Use

Tasks to perform after the unit has been out of use.

Parts Replacement Guidelines

Information on purchasing and replacing unit parts.

After-Sales Service and Warranty

Warranty Requirements

Conditions that must be met for the unit's warranty to remain valid.

Gree GMV series Specifications

General

Type	Variable Refrigerant Flow (VRF)
Compressor Type	Inverter Scroll Compressor
Refrigerant	R410A
Energy Efficiency	High Efficiency
Control	Centralized control, individual control
Operating Temperature Range (Heating)	24°C
Noise Level (Indoor Unit)	19 - 45 dB(A)