Trixeth t1_jc45tjp wrote on March 13, 2023 at 10:21 PM Reply to comment by jennifer3333 in Thermostat wiring? by ZzIceDzZ Generally you need a common wire. Old tstats were basically switches. New tstats need a power circuit in addition to the switched outputs. Permalink Parent 2
Trixeth t1_jc45tjp wrote
Reply to comment by jennifer3333 in Thermostat wiring? by ZzIceDzZ
Generally you need a common wire.
Old tstats were basically switches.
New tstats need a power circuit in addition to the switched outputs.