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New Wifi Thermostat with C Wire Transformer and Taco Zone Controller
I just added a new Sensi Wifi thermostat to my heat only system. With no C wire and no easy path to the basement, I added a plug-in transformer as suggested on the Sensi website (https://sensicomfort.com/support/article/adding-a-24-vac-external-transformer?product=wi-fi-thermostat)
. It all appears to be working BUT my zone light is lighted a pale yellow down in the basement on the Taco Zone Valve Controller. None of the other systems that aren't calling for heat have that light active. The pump isn't operating so no heat is flowing (good thing as it's 72F outside). Not sure what to make of this. Turning up the setting (either on the faceplate, using my phone or telling it to verbally increase with Alexa) will bring on the pump and open the zone valve (as well as light up the red light on the zone).