Gree GWH12MB-D3DNA3D

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Split Air Conditioner
Owner's Manual
Residential Air Conditioners
Thank you for choosing Residential Air Conditioners,please read this owner’s
manual carefully before operation and retain it for future reference.
MODEL: GWH09MB-D3DNA3D/I
GWH12MB-D3DNA3D/I
GWH18MC-D3DNA3D/I
GW
GWH09MB-D3DNA8D/I
GWH12MB-D3DNA8D/I
GWH12MB-D3DNA2D/I
H18MC-D3DNA2D/I

Gree GWH12MB-D3DNA3D Specifications

General

Cooling Capacity	12000 BTU/h
Heating Capacity	12000 BTU/h
Refrigerant	R410A
Power Supply	220-240V, 50Hz
Indoor Unit Weight	9 kg
Type	Split System
Energy Efficiency Ratio (EER)	3.5
Energy Efficiency Ratio (Cooling)	3.21 W/W
Noise Level (Outdoor)	52 dB(A)
Outdoor Unit Dimensions (WxHxD)	320 mm

Summary

Operation Safety Precautions

Voltage and Electrical Safety

Ensure stable voltage, proper wiring, and circuit protection to prevent electrical hazards.

Operational Environment Safety

Maintain clear airflow, keep flammable items away, and avoid blocking vents.

Handling and Repair Safety

Procedure for handling smoke/smell and the prohibition of self-repair.

Safe Operation Practices

Cord and Wiring Safety

Do not damage power/control cords; use qualified personnel for replacement.

Airflow Direction Control

Use the remote controller to adjust vertical and lateral airflow direction as needed.

Handling and Usage Warnings

Avoid inserting objects, direct airflow on living things, prolonged cold exposure, misuse, water contact, or proximity to heaters.

Operational Principles and Functions

Cooling Mode Principles

Explains heat absorption for cooling and anti-freezing mechanism at low temperatures.

Heating Mode Principles

Details heat transfer for heating, defrosting process, and anti-freezing in heat mode.

Indoor Unit Identification

Indoor Unit Components

Identifies and labels key components of the indoor air conditioner unit.

Wireless Remote Control Functions

Basic Button Operations

Learn to operate basic functions like power, mode selection, fan speed, sleep, clock, and light.

Fan Speed and Sleep Mode

Adjust fan speed (Auto, Low, Mid, High) and activate Sleep mode for comfort.

Clock and Light Settings

Set the clock time and control the display light on the remote control.

Advanced Remote Operations

Temperature Adjustment (+- Buttons)

Increase or decrease the set temperature using '+' and '-' buttons on the remote.

Turbo and X-FAN Modes

Activate Turbo for rapid cooling/heating and X-FAN for drying the evaporator.

Temperature Display Mode

Switch between displaying set temperature and ambient room temperature.

Timer and Swing Control

Timer Functions

Set scheduled timer for turning the unit on or off automatically.

Swing Direction Control

Adjust the vertical swing angle of the louvers for directed airflow.

Remote Control Usage Scenarios

General Operation Guide

Basic steps for operating the air conditioner: power, mode, temperature, fan speed, and swing.

Optional & Special Functions

Guides on using Sleep, Timer, Light, Turbo, X-FAN, and Auto Run features.

Remote Control Advanced Features and Maintenance

Keypad Lock Function

Lock or unlock the remote control keypad to prevent accidental changes.

Swing Operation Details

Detailed instructions for controlling the swing direction of the air louvers.

Temperature Unit Switching

Switch between Celsius (°C) and Fahrenheit (°F) temperature display modes.

Battery Replacement Guide

Instructions and precautions for replacing batteries in the remote control.

Emergency Manual Control

Manual Switch Operation

Using the manual switch for operation or stopping when the remote is lost or damaged.

Cleaning and Maintenance Procedures

Front Panel Cleaning

Instructions for removing, washing, and reinstalling the front panel for cleaning.

Air Filter Cleaning

Guidance on cleaning air filters every three months to maintain performance.

Unit Maintenance and Checks

Air Filter Removal and Cleaning

Detailed steps for removing, cleaning, and reinserting air filters.

Pre-Use Checks

Essential checks before operating the unit to ensure proper function and safety.

Post-Use Maintenance

Steps for maintaining the unit after use, including cleaning and rust prevention.

Troubleshooting Common Issues

Startup Delay and Odors

Explanation for unit delay on restart and unusual smells from the outlet.

Operational Sounds and Mist

Causes for water flow sounds and mist emission during cooling operation.

Advanced Troubleshooting

Noise and Non-Operation Issues

Troubleshooting creaking noises and complete unit non-operation.

Performance and Remote Control Problems

Addressing poor cooling/heating efficiency and wireless remote control unavailability.

Troubleshooting Specific Faults

Airflow and Moisture Issues

Troubleshooting inability to deliver air and moisture on the outlet vent.

Leakage, Noise, and Defrosting

Diagnosing water leakage, unit noise, and the normal defrosting process.

Critical Fault Scenarios

Situations requiring immediate shutdown and dealer contact due to severe faults.

Installation Service Guidelines

Important Installation Notices

Key advisories for unit installation, including professional work and circuit requirements.

Installation Site Requirements

Guidelines on unsuitable locations to avoid malfunction and ensure proper installation.

Indoor Unit Placement

Criteria for selecting the optimal position for the indoor unit for performance and access.

Electrical Installation Precautions

Electrical Safety Requirements

Ensuring proper power supply, wiring, and circuit protection for safe operation.

Earthing and Grounding

Procedures and requirements for reliable earthing of the appliance.

Other Installation Notes

General notes on wiring, fuses, national regulations, and user restrictions.

Installation Dimension Diagram

Mounting Dimensions and Clearances

Diagram showing required clearances around the indoor unit for installation.

Indoor Unit Physical Installation

Rear Panel Mounting

Instructions for horizontally mounting the rear panel securely.

Piping Hole Preparation

Creating and preparing the wall hole for piping and wiring.

Drain Hose Installation

Connecting and routing the drain hose for proper condensate removal.

Electrical Wiring Connections

Connecting Indoor and Outdoor Wires

Steps for connecting indoor and outdoor unit electrical and signal wires.

Piping and Connections

Piping and Wiring Routing

Guides on routing piping and wiring from the unit to the exterior.

Connection Pipe Installation

Procedure for aligning and tightening flare nuts for pipe connections.

Installation Verification and Testing

Post-Installation Checks

List of items to check after installation to prevent potential malfunctions.

Test Operation Procedure

Steps for performing the initial test operation to verify unit functionality.

Healthy Filter Management

Healthy Filter Installation

Instructions for installing the healthy filter into the air conditioner unit.

Filter Cleaning and Care

Guidance on cleaning various types of healthy filters, with special notes.

Filter Service Life

Information on the typical usage lifetime of healthy filters.