The answer to 'zone control system making noise' is that there are several common causes, including issues with the dampers, motors, or the control system itself. Symptoms may include loud buzzing, clicking, or rattling noises coming from the vents or the zone control panel. Solutions can range from simple adjustments to more complex repairs, so it's important to diagnose the root cause.
If the noise is coming from the zone dampers or motors, it may be due to worn or malfunctioning components. This can often be fixed by a DIY homeowner by lubricating the moving parts or replacing the damper motors. However, if the issue is with the control system or wiring, it's best to call in a professional HVAC technician to diagnose and repair the problem to avoid further damage.