EWC Controls Forum

I agree with Paul you need to replace the zone panel. This replacement is quite a difficult task, therefore it would be better if you take professional help and get more information for replacing the existing programmable thermostats with wifi stats so that your system will work functionally.

Damper operating principles are the same except that outdoor or makeup air supply dampers are often controlled not by a thermostat and motor but by a manual cable or lever that allows the HVAC technician to leave the fresh air supply damper in a set position.