The answer to 'my air duct sealing keeps shutting off' is that this is likely due to a problem with the air duct system or the HVAC unit itself. Common causes include leaks in the ductwork, issues with the blower fan, or problems with the thermostat or control system.
If the air duct sealing keeps shutting off, it could be a sign of low airflow, which can cause the system to overheat and shut down as a safety measure. This could be due to a blockage in the ducts, a problem with the air filter, or an issue with the HVAC unit's blower fan. It's important to address the root cause to prevent the problem from recurring.