I guess that does not mean it can make it even worse than the heat. If it is a wire problem, You can replace it. Whether due to a wire that’s frayed or a more serious problem check it. The alternative causes of shark vacuum overheating is an electrical problem. There could be a mass of dust bunny hiding in the hoses blocking airflow and causing the unit to overheat. If it does not get better airflow, due to complete drainage it does not suck well and then it can be overheated.Ĭheck your vacuum dust cup. So check all the filters and if there is any clog you should remove it. The vacuum might be overheating because the filters are clogged. We have discussed some common causes of shark vacuum overheating problem and you have to try to solve all these problems. Allow your shark vacuum to cool for one hour. Check your vacuum dust cup, clean it if there is any dirt or blockage.Ĭheck all the filters of your vacuum cleaner. If your shark vacuum overheats, you should switch off and unplug it. If your appliance overheats for any reason, the thermostat will automatically turn off your shark. The vacuum needs a flow of air to create suction, the vacuum steam is equipped with a motor protective thermostat in case the airflow is blocked.