How to Test Vacuum Cleaner Switches

Vacuum cleaners are designed to last and be effective for many years. However, one problem that commonly occurs with home vacuum cleaners is a faulty power switch. This can be due to the fact that the switch has been pressed so much over the years that the wiring has become damaged. Whatever the reason, the first thing you need to do in order to diagnose the problem is to test the switch.

Things You'll Need

• Phillips or flat-head screwdriver
• Multimeter

Instructions

1. Power off your vacuum and unplug it from the power source.

2. Use a Phillips screwdriver to remove the screws on the switch housing of the vacuum. If there are no screws, you can pop the housing off with the tip of a flat-head screwdriver.

3. Check the wiring running to the switch. If the wires are frayed or disconnected, you may have to replace the wiring, perhaps the entire vacuum.

4. Turn on a multimeter and touch the red "+" lead to the terminal on the switch and hold it there. With the power off, the multimeter should read an open circuit.

5. Turn the vacuum on and touch the terminal with the lead again. The multimeter should read a closed circuit. If these readings aren't produced, then the switch is likely faulty.

References

• Meadowview Construction: Using a Multimeter to Check Vacuum Cleaner Switch
• Second Chance Garage: How to Read and Interpret a Voltmeter