How do I change the temperature from Fahrenheit to Celsius on the SpaNet Controller? December 13, 2017 20:56 Updated Follow Press and Hold Air Blower & Clean Button together until C.LMT comes up - scroll until you reach UNIT press OK, press OK and change from deg F to deg C. Related articles What is the recommended temperature for my Spa Pool? What power source do I need to connect my Spanet Heat Pump to my spa? How do I change the settings out of Demo Mode? What is the process for installation and is it included in the purchase price? Comments 0 comments Article is closed for comments.