How can I change the frost protection temperature in the Edge? November 18, 2019 01:52 Updated Follow Use the up/down keys to change the temperature. The number that flashes will be the set temperature Press Done. Related articles What is Frost Mode on the neoStat ? Which Thermostat do I have? Optimum Start Explained How do I program the heating times on my Slimline Thermostat? How do I reset the neoStat?