1. Check if the power supply is safely controlled.
2. Check if the copy matches the controller.
3. Check if the connector is safe and reliable.
4. Check if the heater is safe and reliable.
5, check that the main power is closed
6, check whether the power supply is suitable for the work of the controller
7, determine the ground connection controller
8, open the main power switch
9, open each controller work switch
10. Set the control temperature and check if the controller reaches the set temperature without any confusion.