1. Check whether the battery of the remote control is exhausted, if so, replace the battery and try decoding again.
2. Ensure that there are no obstacles between the remote control and the air conditioning indoor unit, such as walls or other objects, which may interfere with signal transmission.
3. Check whether the signal receiver between the indoor unit and the remote control has dust or dirt. If so, clean the receiver.
4. If it still cannot be decoded, it is recommended that you contact Gree air conditioning after-sales service center or professional air conditioning maintenance personnel for inspection and maintenance.