1、 Verify the product's power supply to ensure it meets the required specifications for proper operation.

After power is turned on, check whether the power supply of the product is connected by checking whether the light on the switch knob is on.

2、 Check the control board circuit

Remove the bottom cover of the motor and check whether the lines and ports are fastened and not loose. Pay attention to the insertion direction of the ports. The buckles of the three ports on the top should face downward, the buckles of the middle port should face upward, and the buckles of the two ports on the right should face right.

3、 Check the operation status of the control board

Check whether the control board transmits signals normally

4、 Replace the control board

After checking the control board for abnormalities, you can replace the control board yourself. When installing the control board, pay attention to the direction of the port insertion. After all installations are completed, power on and try to reset the product. If the problem is still not solved, please contact the dealer for processing.