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Nest Learning thermostat wiring = NO HEAT!

preslinc
Community Member

1-ORIGINAL (old) thermostat1-ORIGINAL (old) thermostat2-NEW Nest thermostat2-NEW Nest thermostat3-NEW Nest thermostat WIRING = no heat3-NEW Nest thermostat WIRING = no heat

The OLD thermostat ran from 5 wires: RED (power), WHITE (heat), GREEN (fan), and BLUE (unknown). Also a "jumper" wire. Also a YELLOW wire (not used; tucked out of sight). The NEW Nest thermostat recognizes connections with the RED, WHITE, and GREEN wires – but not the BLUE. 

Is our BLUE wire in the wrong place (Where should it go?) Should our YELLOW wire be connected (to Y1 or Y2)? 

Any ideas?? Many thanks!

3 REPLIES 3

Jhonleanmel
Community Specialist
Community Specialist

Hi preslinc,

 

Thanks for posting and for the photos.

 

The other wires' terminals has the buttons pressed indicating that the wires are properly plugged in. I suggest pushing the C wire deeper into the terminal until the button on the side deepens. 

 

Keep us posted.

 

Best, 

Mel

preslinc
Community Member

problem SOLVED.
We looked for an electrician, and found several who advertised they solve Nest thermostat problem. 
He fixed it. And Bob’s your uncle.

EdwardT
Community Specialist
Community Specialist

Hi preslinc,

 

Thanks for the update. I'm glad to hear that it's working fine now. I will be locking this thread in 24 hours. Please feel free to create a new thread should you have some more questions or concerns in the near future and we'll be more than glad to help.

 

Thanks,

Edward