The answer to 'my zone control system keeps shutting off' is that there are several common causes, including issues with the thermostat, dampers, or control board. This can lead to symptoms like inconsistent temperatures, rooms not heating/cooling properly, or the system shutting off unexpectedly.
Some potential solutions include checking the thermostat settings, inspecting the dampers to ensure they're opening and closing properly, and troubleshooting the control board for any error codes or malfunctions. If you're not comfortable diagnosing and repairing the issue yourself, it's best to call in a professional HVAC technician to investigate and resolve the problem.