How do you troubleshoot air condition blower fan not working in a 2004 Mercedes c240?

To troubleshoot the blower fan not working in a 2004 Mercedes C240, first check the fuse related to the blower motor in the fuse box. If the fuse is intact, inspect the blower motor itself for any signs of damage or obstruction. Additionally, verify the operation of the blower motor resistor, as a faulty resistor can prevent the fan from functioning. If these components are in good condition, consider checking the climate control module for any faults.