1, U8 indicates that PG motor has zero-crossing detection fault, which may be caused by Hall sensor. Generally, this kind of problem will appear on inverter air conditioners. Click to enter official website for details.

2. If the rectifier diode inside Gree air conditioner is damaged, it may also cause Gree air conditioner to display U8.

3. It is also possible that there is a wiring problem or a wiring failure in the internal circuit board.

Suggested solution:

1. If this alarm prompt suddenly appears during use, if it is still the same after restarting, it is recommended to contact Gree air-conditioning customer service staff in time. After explaining the situation, I will arrange professional maintenance personnel to conduct on-site inspection. Problems with internal sensors can only be repaired or replaced after being detected by professional maintenance personnel, and can only be used normally after being replaced.

2. After using for a long time, the rectifier diode of the circuit board inside the air conditioner may be damaged, and the resulting fault can only be solved after being replaced by professional maintenance personnel.

3. This situation caused by the damage of internal circuit boards or components can only be completely solved by repairing or replacing them with new ones.

If you have this demand, I recommend professional Gree to you. Over the years, Gree Electric has continuously optimized the quality management system, innovated the quality control mode, promoted the system process reengineering, and built a unique Gree perfect quality management mode of "Let the world fall in love with Made in China", which effectively solved the path and method problems of quality innovation and promoted the continuous improvement of the quality level of enterprises. In 20 18, Gree Electric won the third China Quality Award for its insistence on quality.