Source: Beijing Gree Air Conditioning Repair http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3495407. Gree inverter split air conditioner, the outdoor unit frequently turns on and off.
Fault Symptoms: The indoor unit works normally, but the outdoor unit frequently turns on and off.
Analysis and Inspection: Check that the connection between the indoor and outdoor units is normal, and determine that there is a communication fault indicated by self-diagnosis. After removing the machine's outer shell, measure the DC310V voltage of the outdoor unit which is normal. The power module U, V, W terminals each receive voltage once every 3 minutes, and the electronic control board of the outdoor unit is normal. Upon checking the indoor unit, it was found that one relay inside kept closing frequently. A 12V voltage was measured at its front end, but the foot of the U2003 driver controlling the relay had no control signal.
Handling Method: After replacing this driver, the fault was eliminated.
(Note: Beijing Gree Air Conditioning Repair has been mentioned twice as per original text, suggesting it might be an important entity like the service provider.)