05-29-2022 04:04 PM
I need help wiring up my nest thermostat with a heat pump. I am looking to replace a Honeywell Non-Programmable Thermostat with a Nest Thermostat E. I currently have a heat pump. Not sure if it is a 2 stage Heat Pump. I do have an EM HEAT setting on the Honeywell but I am not sure that the Nest Thermostat E is compatible. any help would be greatly appreciated. I have attached a copy of the Wiring for the Honeywell Thermostat for Reference.
Please Help.
05-29-2022 04:32 PM
Your heat pump has a auxiliary/emergency heat..
Turn the power off for the HVAC air handler.
Remove the old thermostat.
Mount the nest wall plate.
On the Nest wall plate
The White conductor will go on E/AUX on the Nest.
The Orange wire goes on the O/B.
The Green wire goes to G
The Yellow wire goes on the Y
The Red wire goes to Rc
The Blue wire goes to the C
05-29-2022 04:46 PM
Thanks CoolingWizard,
I don't have a E/AUX on the Nest. Would the White Wire go on the W1 ?
I attached a copy of what my NEST looks like with regards to the Wiring.
Are there any settings I will need to change on the NEST setup with regards to the Heat Pump?
Thanks Again!
05-29-2022 06:04 PM - edited 05-29-2022 06:12 PM
On the Thermostat-E put the Aux/E on the W1.