11-07-2022 09:11 PM
In my old System there was a brown wire plugged into the E slot with a jumper wire to W2. Installation told me to plug the e wire into the star slot on the nest, but there isn’t a wire plugged into the W1 or 2 slot. When I tested the emergency heat, it came on. When I tested the regular forced air heat it didn’t get hot. I have 10 wires coming out of the wall 7 were connected with a jumper. I only have 6 connected to the nest, what can I do to fix it?
11-07-2022 09:19 PM
In your old thermostat there should have been a wire in W/W1 or you have a heat pump, and you have an O wire in your old thermostat
Ken, The AC Cooling Wizard
11-07-2022 09:30 PM
I did have an o wire, and I plugged that in but it wasn’t heating up, even after several minutes. I looked at the wiring on my unit and there is a white wire plugged into the w2 spot but wasn’t connected in my old unit. I’m plugging that in to see if that fixes the issue.
11-14-2022 02:39 PM
Hi folks,
@CoolingWizard, thanks for the help!
@Bear1, how's it going with your Nest Thermostat? Still need our help?
Thanks,
Edward
11-17-2022 02:44 PM
Hi Bear1,
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
11-21-2022 03:54 PM
Hi Bear1,
I'm 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
11-11-2022 01:14 PM
Here are some pictures of before and after installation. Would you mind looking and seeing if I have it set up correctly? https://drive.google.com/drive/folders/1-1dbBbvQGKRStNM6XQilHFN0DPmR_9X3
the brown wire, I was told on the app installer, was the emergency heat and to attach it in the * slot. I just want to make sure I have it all hooked up correctly.
11-11-2022 01:36 PM
Bear1,
there is a setting to tell the Nest when to activate the O wire and thus the reversing valve. The W2 wire is for Auxiliary heat and the jumper in your old thermostat was to get the auxiliary heat come on for emergency heat as well.
You should understand that heat pumps are manufactured to be in a particular states of operation when the reversing valve is not energized. That means the heat pump will by default be a heater, or by default it will be an air conditioner. If yours is a default of heating, then you must energize the O wire in order to get air conditioning. And, when your default is air conditioning, then it must energize the O wire in order to get heating. It appears your system is perhaps set up backwards. Here is an easy check, turn your system to cooling and set the temperature to a low temperature setting. When the system comes on it’ll probably be heating .
If that is the case, you will need to wake up the thermostat, rotate the ring to MENU, select it, then rotate the dial to EQUIPMENT, select it, the select again to CONTINUE. Now select HEAT, and you will see the setting for the O/B wire. What ever the current setting is, change it. For example, it says energize for heat, change it to energize for cooling mode.
your system has a special lock out to prevent going from heating to cooling right away, so if you made the change, you will need to wait about five minutes before testing your heater.
Ken, The AC Cooling Wizard.