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Your Nest thermostat is showing a "no power to C wire" error message because it is not receiving enough power from the common wire (C wire) to function properly. This could be due to a wiring issue, a faulty C wire connection, or a lack of power supply to the thermostat. It is important to troubleshoot and resolve this issue to ensure your thermostat works correctly.

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AnswerBot

4mo ago

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