EWC Controls Forum

Ok, so an update to my issue. I did some troubleshooting and found out the old upstairs thermostat wasn't working correctly and was not sending a call to the system for AC. I swapped it out with the old downstairs unit and everything started working perfectly. However, overnight something changed ...

We moved into a new house that has a 2 zone system. I recently replaced the main floor thermostat with an ecobee4 unit. Once I did that, the upstairs zone is not working. When the board is reset, both dampers open and air flows as it should. Bothe the Zone 1 and Zone 2 lights are on. Air was flowing ...