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Heat blowing while on cold

Pcamacho
Community Member
  • I just installed a 4th gen Nest. 
    I have it set on cool but hot air is blowing out. 
    I have hooked up W1 and W2 aux. is that the problem?
1 Recommended Answer

CoolingWizard
Platinum Product Expert
Platinum Product Expert

@Pcamacho ,

your system is a heat pump base system, and you did not hook up the orange wire properly. The orange wire goes into the OB terminal and the white wire goes into the W2 terminal.

AC Cooling Wizard

NestPro, Google Pro, Mechanical Engineer and HVAC service company owner.

View Recommended Answer in original post

9 REPLIES 9

Patrick_Caezza
Diamond Product Expert
Diamond Product Expert

@Pcamacho 

Post a picture of the original thermostat's wiring here


To ensure that I see your reply, please tag me using @Patrick_Caezza

I do not have permission to upload images.

This is how I connected the Nest: 

Pcamacho_1-1729863359943.png

 

Pcamacho_0-1729863265108.jpeg

I did it. Here is the picture of the old thermostat.

CoolingWizard
Platinum Product Expert
Platinum Product Expert

@Pcamacho ,

your system is a heat pump base system, and you did not hook up the orange wire properly. The orange wire goes into the OB terminal and the white wire goes into the W2 terminal.

AC Cooling Wizard

NestPro, Google Pro, Mechanical Engineer and HVAC service company owner.

That did the trick!

Very much appreciated.

@Patrick_Caezza please see my responses below.

Charleshall76
Community Member

You got your reversing valve O/B switch backwards

I don't know what that means. Please explain.