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Humidifier connection causing learning thermostat to overheat

Community Member

Had a whole house humidifier and Nest learning thermostat installed as part of a renovation

Issue is that with the humidifier control wire connected to (*) terminal on the nest the Nest physically heats up and measures room temperature as 95+

HVAC guy doesn't know what the issue is (not familiar with Nest....)

I've taken a quick look at the wiring and it appears to be right based on what I've been able to read


Community Specialist
Community Specialist

Hey Meurig,


Sorry for the late reply. I wanted to follow up and ensure you are good to go. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further. 

Best regards,