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Nest thermostat

Community Member

 Hi is see two jumpers here. I am looking for the solution. I can use the blue wire inside the wall for a common. But in 36 years of electrical experience I don't recall seeing the Y and the W with a jumper. Your thoughts?



Platinum Product Expert
Platinum Product Expert


It hard to imagine a thermostat that has an O/B terminal, needing the jumper between W and Y.  Needless to say with a Nest Thermostat you will not need the jumpers.  If you indeed you have a heat pump, you will have R/Rc, O/B, Y/Y1, and G. The blue conductor can be used for Common,  however, you may need to connect the blue wire to the Common in the air handler. 

AC Cooling Wizard

NestPro, Google Pro, Mechanical Engineer and HVAC service company owner. If my answer solved your problem, click Recommend this Answer below, and If it helped you, please give a Kudo.

Hi folks,


Thanks for posting in the Google Nest Community forum. I just want to check if you managed to see the response above. Please let us know if you still have questions or concerns, as we'll be willing to assist you further. 


I appreciate the help, @CoolingWizard.