![How to Install Ecobee3 Lite Smart Thermostat || Without C Wire || Upgrading My Thermostats - YouTube How to Install Ecobee3 Lite Smart Thermostat || Without C Wire || Upgrading My Thermostats - YouTube](https://i.ytimg.com/vi/FCQjfsIGtME/maxresdefault.jpg)
How to Install Ecobee3 Lite Smart Thermostat || Without C Wire || Upgrading My Thermostats - YouTube
![electrical - Ecobee 3 Lite Installation - No C Wire, only 3 labeled wires on Furnace board - Home Improvement Stack Exchange electrical - Ecobee 3 Lite Installation - No C Wire, only 3 labeled wires on Furnace board - Home Improvement Stack Exchange](https://i.stack.imgur.com/eH4Ap.jpg)
electrical - Ecobee 3 Lite Installation - No C Wire, only 3 labeled wires on Furnace board - Home Improvement Stack Exchange
![Ecobee not powering on after install. Reinstalled old system and it worked fine. I think it's because my C-wire doesn't have power. Any tips? Iopened my panel and found a loose c-wire Ecobee not powering on after install. Reinstalled old system and it worked fine. I think it's because my C-wire doesn't have power. Any tips? Iopened my panel and found a loose c-wire](https://preview.redd.it/ecobee-not-powering-on-after-install-reinstalled-old-system-v0-kfmea09afr1a1.jpg?width=640&crop=smart&auto=webp&s=4fc991c4dcfc4b977946bce5a590d60cd0080600)
Ecobee not powering on after install. Reinstalled old system and it worked fine. I think it's because my C-wire doesn't have power. Any tips? Iopened my panel and found a loose c-wire
![I have two separate R wires on my thermostat. What do I need to know about my ecobee thermostat installation? I have two separate R wires on my thermostat. What do I need to know about my ecobee thermostat installation?](https://storage.googleapis.com/article_attachments/Dual%20transformer_Backplate_Dual%20transformer%20separate%20R%20wires.png)