The answer to 'my zone control system won't turn on' is that there are several common causes, including issues with the thermostat, wiring, or the zone control panel itself. Symptoms may include the system not responding to temperature changes, the control panel not powering on, or individual zones not responding.
Some potential solutions include checking the thermostat batteries, inspecting the wiring for any loose or damaged connections, and resetting the zone control panel. However, if the issue persists, it's best to call in a professional HVAC technician to diagnose and repair the problem, as they have the specialized tools and expertise to properly troubleshoot a malfunctioning zone control system.