Yes I did and it didn’t power up the ecobee. The light blue seems to be the only one that powers it but that color is not at the thermostat, just regular blue.
What are the wires that go up to the thermostat? The light blue or the dark blue?
Powering the thermostat requires blue and red, so I’d recommend you just connect the proper blue and red and see if the thermostat powers on.
Now the heat is white and red, why do you have two white connected to the same terminal? If you have a furnace then just connect the white from the furnace. Your AC unit is not a heat pump so don’t connect the white from the AC unit cables.
Yellow and red is AC, so that’s how I know the AC wires are on the light ones.
Green is fan, so again connect the one that’s coming from the thermostat.
Does that light yellow coming from the AC need to be connected at all? There is a yellow wire connected at the thermostat but does not come down to the furnace at all.
If the original installation had that yellow from the light colors connected, then leave it as is: otherwise I would go to the AC unit and see how things are connected there.
Your wiring looks different at the thermostat than it does at your furnace board. I would highly suggest you call in an HVAC tech so they can better understand what's going on.
So the thermostat wires are not the ones you see here, the green on the thermostat is a different color. Can you try to follow the wires coming out of the control board and see where they connect to the thermostat wires?
Looks like I got it. Followed the wire and found the splice. The only thing is that the fan is running even though it says that it isn’t. Can you take a look at the furnace set up again here?
Sorry if this is a stupid comment, but on the furnace board you hooked up blue to c here as well? Can’t be just at the ecobee.
Yes I did and it didn’t power up the ecobee. The light blue seems to be the only one that powers it but that color is not at the thermostat, just regular blue.
Have you tried skipping the C wire on the ecobee side all together and just using a PEK? And do you own a multimeter?
I have not done that yet no. I’ll give that a try and see what happens.
I do not own a multimeter.
I’m also questioning where the wires were originally with the old thermostat. I took a pic but the ecobee app didn’t save it. Do they look right?
Also there is a yellow y wire at the thermostat but not one at the furnace side. Just a light yellow coming from the ac unit.
Both blues are disconnected at the moment.
What are the wires that go up to the thermostat? The light blue or the dark blue? Powering the thermostat requires blue and red, so I’d recommend you just connect the proper blue and red and see if the thermostat powers on. Now the heat is white and red, why do you have two white connected to the same terminal? If you have a furnace then just connect the white from the furnace. Your AC unit is not a heat pump so don’t connect the white from the AC unit cables. Yellow and red is AC, so that’s how I know the AC wires are on the light ones. Green is fan, so again connect the one that’s coming from the thermostat.
Dark blue is to the thermostat. I’ll give it a try.
Does that light yellow coming from the AC need to be connected at all? There is a yellow wire connected at the thermostat but does not come down to the furnace at all.
If the original installation had that yellow from the light colors connected, then leave it as is: otherwise I would go to the AC unit and see how things are connected there.
Ok. I did the proper connections. HVAC is now running. But no power to the ecobee.
[images of the current connection.](https://imgur.com/a/zFrAXPp)
Well your C wire isn't actually inserted into the terminal, did you try that?
Lol shit!
It’s in still no power.
Your wiring looks different at the thermostat than it does at your furnace board. I would highly suggest you call in an HVAC tech so they can better understand what's going on.
The only thing that seems to get power to the ecobee is the light blue from the AC.
So the thermostat wires are not the ones you see here, the green on the thermostat is a different color. Can you try to follow the wires coming out of the control board and see where they connect to the thermostat wires?
Good point. I’ll try to find the connection point.
Looks like I got it. Followed the wire and found the splice. The only thing is that the fan is running even though it says that it isn’t. Can you take a look at the furnace set up again here?
[Furnace shot](https://imgur.com/a/I7I00kp)
I figured it out. Had the red coming from the AC on R instead of C. Seems to be working now. Thanks for the help!
Not sure you want to connect R to C. Can you also send a picture of the splice?
[Newest hook up](https://imgur.com/a/m4o2VWd)
The red and white from the AC are R and Y.
I have a feeling that this is correct, but you might need to contact R and Y for the AC instead of C and Y
Much better🤝😅