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Nest thermostats controlling other zones

Community Member


I have a 3 zone baseboard hot water heating system. I purchased 3 nests and also 3 nest power connectors. We do not have a c wire which is why I bought the power connectors. The nests are installed and the power connectors are installed at the taco zone controller. I am having weird heating issues where if you turn the thermostat on to heat zone 3, I only get heat in zone 1 and zone 2 (those thermostats are off) and NOT in zone 3 which is the thermostat I turned on to heat. If I turn on zone 2 to heat, I only get heat in zone 1 and not in zone 2 or zone 3. This all worked fine before the nests.


Community Specialist
Community Specialist

Hi there and thanks for reaching our community. Thanks as well for all the info you've provided so far. By power connectors you mean the Heat Link? 


Community Specialist
Community Specialist

Hi there! Just checking in! Did you see the message from my colleague? Many thanks, Larisa

Community Specialist
Community Specialist

Hey there, I haven't heard from you in a while so I'll be locking this thread. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community. Thanks, Oana.