Nest Thermostat Wifi Stopped working

[wigginsfamily]

Fairley new purchase. Been working and all of a sudden will not connect or find wifi networks. It stays on sometimes and the freezes up. I do resets and it takes a long time to come on then says no wifi networks. It will stay on for a few minutes and then freezes and I have to repeat the cycle. I have reset and tried reenter wifi ssid manually but no joy. @googlenesthelp 

 

[Patrick_Caezza]

@wigginsfamily 

Is there a C wire installed?

[wigginsfamily]

@Patrick_Caezza 

 

@Yes. There is a C wire (fan, blue) and an Rc wire (power, red). The thermostat info says voltage is 3.7V

[Patrick_Caezza]

@wigginsfamily 

You said there is a C wire, but then you call it a fan wire. Which is it?

The wifi will get turned off if the voltage is only 3.7v.

Check in the Furnace/air handler and verify what the blue wire is connected to.

[wigginsfamily]

@Patrick_Caezza 

Here is my wiring:

Yellow=Y1

Green=G

Blue=C

Brown=O/B

Black=E/*

Red=Rc

[Patrick_Caezza]

@wigginsfamily 

Is that list from the furnace/air handler connections?

Can you post a picture of it and one of the original thermostat wiring?

[wigginsfamily]

@Patrick_Caezza 

@Ihave had a nest installed for many years now. Don't have original. That is the configuration for the air handler.  

[Patrick_Caezza]

@wigginsfamily 

I'm confused. Your original post said, 'Fairley new purchase'. 

You can go by the color of the wires as there is no standard. I ask for a picture because of this.

You still didn't clarify what you meant by 'C wire (fan, blue)'. Was the blue wire connected to the fan terminal originally?