Gree GMV-ND28TS/B-T User Manual (English)

Questions and Answers:

J
John ChanAug 6, 2025
Why is my Gree GMV-ND28TS/B-T Air Conditioner not cooling properly?
- S
  Scott GayAug 6, 2025
  Several factors can cause a Gree Air Conditioner to have a poor cooling effect: * The filter may be dirty or blocked. Clean or replace the filter. * There may be too much heat load in the room (e.g., too many people). Reduce the heat load. * Doors or windows may be open. Close all doors and windows. * The inlet and outlet of the indoor unit may be blocked. Unblock the inlet and outlet. * The set temperature may be too high, or there could be a refrigerant leak. Adjust the temperature setting or check for refrigerant leaks. * The room temperature sensor's performance may be declining. Replace the room temperature sensor.
P
Pamela RossAug 12, 2025
How to troubleshoot a Gree GMV-ND28TS/B-T Air Conditioner that won't start?
- J
  janetrodriguezAug 12, 2025
  If your Gree Air Conditioner isn't starting, there could be several reasons: * The power supply might not be connected. Check the power supply. * The circuit breaker might be tripping due to an electricity leak. Reset the circuit breaker. * The input voltage might be too low. Ensure the correct voltage supply. * The operation button might be closed. Open the operation button. * The control loop might be abnormal. Check the control loop.
U
umosesAug 18, 2025
Why is my Gree GMV-ND28TS/B-T not heating well?
- P
  Peter MullinsAug 18, 2025
  If your Gree Air Conditioner is not heating well, consider the following: * The filter may be dirty or blocked. Clean or replace the filter. * A door or window may be open. Close all doors and windows. * The set temperature may be too low. Increase the temperature setting. * There may be refrigerant leakage. Check for refrigerant leaks. * The outdoor temperature may be below -5?. Ensure the outdoor temperature is above -5?. * There may be an abnormality in the control circuit. Check the control circuit.
J
jonathangonzalezAug 25, 2025
What to do if my Gree GMV-ND28TS/B-T Air Conditioner stops after running for a while?
- B
  Brooke JacksonAug 25, 2025
  If your Gree Air Conditioner stops after running for a while, consider these possibilities: * The inlet or outlet of the outdoor or indoor unit might be blocked. Remove any obstacles. * The control loop may be abnormal. Check the control loop. * If the outdoor temperature is above 43?, set the unit to cooling mode.
F
floresdavidAug 29, 2025
What to do if the indoor fan of my Gree Air Conditioner doesn’t start during heating?
- T
  Tammy SmithAug 29, 2025
  If the indoor fan of your Gree Air Conditioner doesn’t start during heating, check the following: * The tube temperature sensor head may not be positioned correctly. Adjust its position. * The tube temperature sensor head may not be inserted properly. Reinsert it. * The wiring of the tube temperature sensor head may be broken. Repair or replace the wiring. * The capacitor may be leaking electricity. Replace the leaking capacitor.

Gree GMV-ND28TS/B-T Specifications

General

Brand	Gree
Model	GMV-ND28TS/B-T
Category	Air Conditioner
Language	English

Summary

User Information and Welcome

Disclaimer and User Notices

Exception Clauses

Manufacturer disclaims responsibility for issues arising from misuse, unauthorized modifications, or external factors.

Disposal Instructions

Guidelines for responsible disposal of the product to prevent environmental harm and promote recycling.

Safety Notices

General Safety Precautions

General warnings about potential damage and hazards from improper operation, including prohibited actions and required observations.

Installation and Electrical Safety

Guidelines for safe installation by qualified personnel, electrical grounding, and power supply checks to prevent hazards.

Operational and Component Safety

Safety precautions for unit installation, refrigerant handling, electrical connections, and user operation to prevent damage and injury.

Maintenance and Operation Safety

Safety guidelines for cleaning, operating the unit in specific conditions, and avoiding self-repair to prevent electrical hazards.

Product Introduction

Key Components Identification

Identifies and labels the main parts of the indoor unit, including panel, louver, and pipe joints.

Product Dimensions and Views

Provides detailed three-view drawings and dimensional data for the indoor unit's main body and panel.

Rated Working Conditions

Preparations for Installation

Standard Fittings List

Lists and describes the standard fittings included with the unit for installation purposes, such as drainage hose and insulation.

Installation Location Selection

Provides guidelines and criteria for selecting an appropriate and safe installation location for the indoor unit.

Communication Wire Selection Requirements

Details specifications and types of communication wires needed for connecting indoor and outdoor units and controllers.

Power and Air Switch Wiring Requirements

Outlines the specifications for power cords and air switch capacity based on unit model and power supply.

Installation Instructions

Indoor Unit Mounting and Ceiling Requirements

Specifies ceiling opening dimensions, suspension bolt pitch, and panel fitting requirements for indoor unit installation.

Suspending the Indoor Unit

Step-by-step instructions for drilling holes, installing expansion bolts, and temporarily mounting the indoor unit.

Refrigerant Pipe Connection

Instructions for connecting refrigerant pipes using flaring nuts and specific torque values.

Drainage Pipe Installation and Testing

Guidelines for connecting, installing, and testing the condensate drainage system to prevent leaks and ensure proper flow.

Drainage System Testing and Installation Details

Instructions for performing drainage system tests and details on pipe connections and slope requirements.

Drainage System Testing Procedures

Details on how to test the drainage system after electrical work, including water injection and checking for leaks.

Decorative Panel Installation Precautions

Warnings and guidelines regarding improper panel installation leading to air leakage or condensation.

Panel Installation Steps

Step-by-step instructions for attaching the decorative panel, including screw tightening and sealing material thickness.

Wired Controller Installation

Guidance on installing the optional wired controller according to the manufacturer's instructions.

Wiring Work

Wire and Patch Board Terminal Connection

Instructions for properly connecting single branch wires and multi-twisted wires to terminal boards.

Power Cord Connection

Details on connecting the power cord, including circuit breaker requirements and wiring diagrams for single/three-phase power.

Indoor to Outdoor Unit Communication Wire Connection

Steps for connecting communication wires between indoor units and outdoor units, including terminal connections.

Wired Controller Communication Wire Connection

Instructions for connecting communication wires between the indoor unit and the wired controller.

Wired Controller and Indoor Unit Network Wiring

Explains how to wire wired controllers to indoor units and outdoor units in a network configuration.

Function List

Routine Maintenance

Filter Cleaning Procedures

Provides instructions for removing, cleaning, and drying air filters to maintain unit performance.

Pre-Seasonal Maintenance Checks

Checkpoints for ensuring the unit is in good condition before the start of a new operating season.

Post-Seasonal Maintenance

Procedures for preparing the unit for long-term storage, including drying and power disconnection.

Table of Indoor Unit Error Codes

Troubleshooting Common Issues

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