GhGL thermostat compatibility for GE zone line

[Amisin]

Is this system compatible the third gen nest

in case the picture is not clear it’s B GL GH Y W C R

i did GL to G and the GH to Y2 but it didn’t work.

is there something that needs to be changed in the setting as well when I connect it to the app? 

thank you!

[Patrick_Caezza]

Try this wiring

Blue - B to OB

Orange - GL to G

Green - Gh to Y2 (set2nd-speed fan)

Yellow - Y to Y1

White - W to W2/AUX (set as AUX heat)

Black - C to C

Red - R to Rc

You'll probably need to do this too.

If your system starts to blow cool air when your Nest thermostat is in Heat mode (or if it blows warm air when its in Cool mode), change the settings for orientation of your heat pump.

1.  On your thermostat, go to Settings.
2. Select Equipment.
3. Select Continue > Continue.
4. Select Heat Pump.
5. The Nest Thermostat defaults to an O setting for heat
   pumps. 
   • If the O option is highlighted, select B.
   • If the B option is highlighted, select O.
6. Test your heating and cooling again to make sure the issue is resolved.

[Amisin]

When I put the R in Rc it doesn’t connect and keeps saying there’s no power source

it connects when I put it to Rh though

everything else I put in as you recommended 

On testing:

It cools and runs the fan ok

and the auxiliary heat work ok as well

however nothing happens on the heat pump test or the heating stage 2 test

[EdwardT]

Hi Amisin,

Thanks for reaching out. I'm sorry to hear that you're having an issue with the heat pump test and heating stage 2 test. I'd love to know more about this. Could you try skipping the tests and check if the heating would work if you call for heating?

Looking forward to your response.

Thanks,

Edward

[EdwardT]

Hi Amisin,

It's me again. I wanted to check back in to see if you have other questions and concerns. Feel free to let me know if you do. 

Thanks,

Edward

[EdwardT]

Hi Amisin,

Just checking in to make sure that you've seen our response. Please let us know if you have any other questions or concerns as I will be locking this in 24 hours.

Thanks,

Edward