How do I disconnect my Mill WiFi heater in order to control it locally without using WiFi? And how do I reconnect it back to WiFi?

This only applies for Generation 1 and Generation 2 heaters.

To disconnect your Mill WiFi heater in order to control it locally without using WiFi:

Push the WiFi button on the control panel of the heater 1 time. The WiFi light indicator on the control panel of the heater will blink green slowly, this meaning you are able to manually set your desired temperature by using the + and - buttons.

To reconnect your Mill WiFi heater back to WiFi:

Push the WiFi button on the control panel of the heater 1 time to reconnect the heater to the Mill cloud. The WiFi light indicator on the control panel will show a green light.