Gree GMV-450WM/B-X

Owner's Manual
Air Conditioners
Models:
GMV-224WM/B-X
GMV-280WM/B-X
GMV-335WM/B-X
GMV-400WM/B-X
GMV-450WM/B-X
GMV-504WM/B-X
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■
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GMV-2460WM/B-X
 Thank you for choosing Air Conditioners, please read this owner’s manual carefully before
operation and retain it for future reference.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.
 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.
D.C. Inverter
Multi VRF Modular

Gree GMV-450WM/B-X Specifications

General

Brand	Gree
Model	GMV-450WM/B-X
Category	Air Conditioner
Language	English

Summary

Safety Precautions

Installation Procedure Compliance

Follow instructions for installation and service.

Professional Installation Requirement

Installation must be done by qualified personnel, not self-installation.

Power Supply Verification and Safety

Check power supply against nameplate and ensure power safety.

Earthing and Electrical Safety

Ensure unit is properly earthed to avoid electric shock.

Use of Exclusive Accessories and Parts

Use only exclusive accessories to prevent hazards.

Power Cord Specifications and Safety

Use adequate wire size; replace damaged cords with exclusive cables.

Welding and Nitrogen Charge Precautions

Wired Controller Connection Sequence

Refrigerant Leakage Management

Ventilate immediately if refrigerant leaks; avoid fire.

Power Cord Connection and Box Cover Safety

Secure the electric box cover after connecting the power cord.

Pressure Switch Protection Against Bypass

Pre-Use Piping and Wiring Check

Verify piping and wiring correctness before unit operation.

Air InletOutlet Obstruction Hazard

Power Cord PlugUnplug Operation Restriction

Do not start/stop by plugging/unplugging power cord directly.

Prohibition of Child Operation

Operation with Wet Hands Warning

Safety During Unit Cleaning

Turn off power before cleaning to prevent shock/injury.

Environmental Suitability Warning

Pre-Operation Electrical Charge and Halting

Response to Abnormal Operation

Power off and contact service center for any abnormal events like burning smell.

Prohibition of Unauthorized Unit Repair

Do not repair the unit yourself; contact authorized service center for faults.

Preparation before Installation

Installation Site Guidelines

Piping Work Requirements

Installation Instruction

Connection Pipe

Installation of the Connection Pipe

Electric Wiring

Wiring precautions

Wiring of power cord

Connection of power cord

System Communication

Connection Method and Steps for System Communication

Check Items after Installation and Trial Run

Check Items after Installation

A checklist of items to verify after unit installation.

Trial Run

Procedures and guidelines for conducting the initial trial run of the system.

Common Malfunction and Troubleshooting

Error Indication