Delayed AC with C Wire

[MotorcycleMike]

I have a Nest Learning Thermostat, Gen 2, with AC delayed issues. I confirmed the C wire is physically connected and shows in  My Equipment Wiring. I also confirmed the battery voltage is above 3.6V in the Technical Info when I get the delayed message. I usually see 3.8V or 3.9V. Though it seems this should not matter since the C wire is connected. I have not yet measured the C wire voltage. What do I use for the reference/ground? What else can I do to fix this issue? 

Thanks,

Mike

[Jenelyn_O]

Hi MotorcycleMike,

Thanks for reaching out. I'm sorry for the delay. It looks like your power reading is fine. Your Nest Thermostat should work as it should. Please try to remove your C wire and restart your thermostat by going to Settings > Reset > Restart. After that, monitor your thermostat behavior if the issue persists. Ensure to turn the breaker off before touching the wires. 

Let me know how it goes.

Best,

Jenelyn