The knob usually allows you to activate the slow cooker to turn on or turn off unless the knob is broken and will not rotate, then you might not be able to turn on your slow cooker. In this case, make sure to replace it with a new knob. This will be an easy installation. Remove the knob by pulling it out and secure the new one by pushing it in.

Before checking other parts that can be accessed in the interior of the slow cooker, first check the cord and plug the cord into an outlet to test if it works. If the cord is burned out or damaged from wear, then it will not be able to power your slow cooker. It is best to replace the cord with a new one. Tip: make sure to test the cord with different outlets.

If the switch does not allow you to control the heating and time on your slow cooker, then check the circuit board first. If the board is working, then the switch might be worn out from use and time. In this case, replace the switch with a new one for better results.

If there is a break in the wires then the element will not be able to produce any heat and can affect the slow cooker from turning on. In this case you will need to replace the heating element. Tip: when installing a new element, remember that the wires are fragile and can be damaged easily. Replace element with identical structure and be careful not to distort the shape of it as you are installing it.

If the controls or the circuit board are burned out or broken, then your slow cooker will not heat up and the settings you are demanding such as low or high temperatures will not work. You will need to replace the board to activate heat and continue its functioning.