Wiser Underfloor Heating connection strip LED behaviour chart. Follow See the whole LED behaviour chart here : LED Behaviour Related articles Where can I find a wiring diagram for the Wiser Underfloor Heating Controller? Wiser UFH - Why can I add 3 controllers but only get 16 zones in total? Do I need an extra heating channel to use UFH with Wiser? Are there any accessories available with the Wiser Underfloor Heating Controller? How many actuators can be linked to one Underfloor Heating zone?