How to Reset Gree Reverse Cycle Air Conditioner: A Comprehensive Guide

Resetting a Gree reverse cycle air conditioner can be a straightforward process, but it’s essential to follow the right steps to ensure the safety and proper functioning of your unit. This comprehensive guide will walk you through the step-by-step process of resetting your Gree reverse cycle air conditioner, providing you with the technical details and expert-level insights to help you tackle this task with confidence.

Preparing for the Reset

1. Disconnect the Power

Before you begin the reset process, it’s crucial to disconnect the electrical power to both the indoor and outdoor units of your Gree reverse cycle air conditioner. This step is essential for safety, as it prevents the risk of electrical shock or fire during the maintenance or cleaning procedures.

2. Wait for the System to Cool Down

After disconnecting the power, allow the system to cool down for at least 10 minutes. This waiting period is necessary to ensure that the internal components have had sufficient time to cool down, making the reset process safer and more effective.

Locating the Isolator Switch

how to reset Gree reverse cycle air conditionerImage source: Gree ac by Air Fans

3. Identify the Outdoor Unit

Locate the outdoor air conditioning unit, which is typically installed outside your home or building. This is where you’ll find the isolator switch that you’ll need to interact with during the reset process.

4. Locate the Isolator Switch

On the outdoor unit or on the wall beside it, you’ll find the isolator switch. This switch resembles a commercial on/off electrical switch and is the key component in the reset process.

Performing the Reset

5. Turn Off the Isolator Switch

Turn the isolator switch to the off position and leave it in this state for an hour. This step is crucial, as it will cut the power from the switchboard and clear the memory of the air conditioning system.

6. Turn On the Isolator Switch

After the one-hour waiting period, turn the isolator switch back to the on position.

7. Restart the Unit

Turn the Gree reverse cycle air conditioner back on from the master controller. Observe the system’s operation and check for any error codes that may be displayed on the master controller.

Understanding Error Codes

8. Familiarize Yourself with Error Codes

Different Gree air conditioner models may have different error codes, so it’s essential to be familiar with the specific error codes for your particular unit. Consult the manufacturer’s documentation or service manual to understand the meaning and troubleshooting steps for any error codes that may appear.

9. Interpret Error Codes

If an error code persists after performing the reset, it’s recommended to call a qualified technician to inspect the system. The technician will be able to diagnose the issue and provide the necessary repairs or maintenance to resolve the problem.


By following the steps outlined in this comprehensive guide, you can effectively reset your Gree reverse cycle air conditioner and troubleshoot any issues that may arise. Remember to always prioritize safety, follow the manufacturer’s instructions, and seek professional assistance if needed. With this knowledge, you’ll be well-equipped to maintain the optimal performance of your Gree reverse cycle air conditioner.

Gree Rio Heat Pump Service Manual
Gree Lomo Owners Manual
Reset Air Conditioning Error Codes