When connecting your Mill WiFi heater it is important to make sure you have sufficient WiFi signal. The WiFi signal range on your heater is IOT based, meaning the signal range is lower than WiFi devices such as phones, PC, tablets, etc. It is therefore important to make sure your heater, phone and WiFi router are close to each other when installing. It is also important to be aware your WiFi signal of a may be affected by what kind of material your house is built with (concrete, woodwork etc.)
If you experience a weak WiFi signal we recommend increasing the signal by using a WiFi range extender (repeater/extender) to ensure your heaters have a stabile signal.