Gree GWHD(28)NK6OO(LC)(LH) User Manual

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Service Manual

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GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI

Questions and Answers:

J
Jeffery MorrisAug 9, 2025
What to do if my Gree GWHD(28)NK6OO(LC)(LH) Air Conditioner can't be started up?
- J
  Jocelyn SaundersAug 9, 2025
  If your Gree Air Conditioner won't start, first, confirm if there's a power failure and wait for the power to return. If not, check the power supply circuit and ensure the power plug is securely connected. Also, make sure the air conditioner is grounded reliably and the wiring is correct. Inspect the power cord for damage and replace it if needed. If the remote controller is not working, replace the batteries or repair/replace the remote controller. Ensure that you have the proper air switch selected.
S
sherri00Aug 19, 2025
How to check wire connection if Gree Air Conditioner does not start?
- E
  ekellyAug 19, 2025
  To address the issue of a Gree Air Conditioner not starting, check the wiring between the indoor and outdoor units according to the circuit diagram, ensuring all wiring terminals are firmly connected.
W
wmyersAug 29, 2025
What to do if Gree Air Conditioner can't be started up because of remote controller malfunction?
- L
  lisa21Aug 29, 2025
  If your Gree Air Conditioner isn't starting, try replacing the batteries in the remote controller, or repair/replace the remote controller.

Gree GWHD(28)NK6OO(LC)(LH) Specifications

General

Type	Split Air Conditioner
Power Supply	220-240V, 50Hz
Energy Efficiency Ratio (Cooling)	3.5
Energy Efficiency Ratio (Heating)	3.8
Refrigerant	R410A
Cooling Capacity	2.8 kW
Indoor Unit Weight	8 kg
Air Flow (Indoor)	500 m³/h
Air Flow (Outdoor)	1200 m3/h
Heating Capacity	3200 W

Summary

Outdoor Unit Specifications

Electrical System Information

Wiring Diagrams

PCB Printed Diagram

Installation and Maintenance Notes

Important Safety Precautions

Critical safety guidelines for installation, electrical work, and refrigerant handling.

Installation and Maintenance Specifics

Installation Procedures

Installation Flowchart

Electrical Connections

Detailed instructions for making electrical connections to the outdoor unit.

Outdoor Unit Installation

Steps for securely mounting and installing the outdoor unit.

Installation Dimension Checks

Post-Installation Checks

Maintenance Procedures

Pre-Maintenance Safety Precautions

Safety measures to take before starting any inspection or repair work on the unit.

LED Indicators and Diagnostics

Malfunction Checking and Elimination

Procedures for diagnosing and resolving common malfunctions in the unit.

Troubleshooting Common Malfunctions

Step-by-step guide for troubleshooting common operational issues.

Unit Removal Procedures

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