The answer to 'my duct cleaning keeps shutting off' is that there could be several common causes, such as a clogged air filter, a problem with the motor or blower, or an issue with the thermostat or electrical connections. If your duct cleaning system keeps shutting off, it's likely a sign of an underlying problem that needs to be addressed.
Some common symptoms include the system cutting out after a short period of use, the motor overheating, or the system not providing adequate airflow. Solutions may involve replacing the air filter, checking for any blockages or obstructions in the ducts, or troubleshooting electrical or mechanical issues. In many cases, it's best to have a professional HVAC technician diagnose and repair the problem to ensure it's fixed properly and safely.