Heat Pump not heating

[Jerandlaur]

I have a heat pump and just installed the Nest 4. I wired the heat according to the picture form my old thermostat and I can’t get heat. Emergency heat works but not regular heat. 

I can’t figure out how to post pictures here but everything is the same. Would appreciate any help. 

[Patrick_Caezza]

@Jerandlaur 

Post a picture of the original thermostat's wiring

[Jerandlaur]

@Patrick_Caezza i don’t see how to pair a picture. There is no way to insert one. 

[Patrick_Caezza]

@Jerandlaur 

If you created an account, you should see this.

[Jerandlaur]

 

 Thank you. I have posted the original writing and how I have it wired now. In the app I switched form “O” to “B” as was recommended but since they are the same wire I didn’t think that would do anything. The compressor kicks but is blowing cold air.

[Jerandlaur]

@Patrick_Caezza 

oops, forgot to tag you. The pictures are above. 

[Jerandlaur]

@Patrick_Caezza @Can you help?

[Patrick_Caezza · Accepted solution]

@Jerandlaur 

The only recommendation I can offer is to move the white wire from W1 to W2/Aux and set it as Aux heat.

If that doesn't work, try taking the yellow, red, and green wires and connect them together. This will activate the system, and it should blow cool air. Add the orange with it, and it should blow heat.

If it still only blows cool air, then your system probably has an issue.

[Jerandlaur]

@Patrick_Caezza Emergency heat works just not regular heat. The compressor kicks on but won’t heat. Will changing W1 to W2 help that? Potentially?

[Patrick_Caezza]

@Jerandlaur 

Check what you identified each wire as. I don't see any wiring that would provide you with emergency heat.

It looks like you have a 1-stage heat and cooling heat pump with auxiliary heat, based on the wiring I see.