Test Wall Light Switch

The light switch may be bad.

Test wall light switch.

Tools for testing light switches. Testing any type of light switch takes a few basic tools. The problem is that the light in the tester acts as a bridge for the circuit when the switch is off. This type will not work properly when used for a light switch.

Test the switch with a continuity tester. Keep the circuit breaker flipped off for this. Test the ground wires in the wall switch with a two lead circuit tester which has a red and a black lead running into black body with a small light. Troubleshoot 3 way switches troubleshoot 4 way switches.

The tester light should not come on. How to troubleshoot light switches and replace it can be easy and d i y project. Use extreme caution when performing this test it will only work when the power to the switch is turned on. Notice the burn marks on a failed switch caused by an internal arc flash.

A continuity tester can be used to test the light switch while the circuit is off or the switch has been removed. And for making the test you ll need either a continuity tester or a. This type of tester has two lead wires that uses the battery voltage of the tester to test a circuit which in this example is the circuit components of a switch. Ge c by ge 3 wire smart switch on off button style single pole 3 way white smart illuminated led touch light switch with wall plate item 1608273 model 93120080.

If you hear a crackling noise inside the switch it is caused by internal arcing and is ready to fail. Set the switch to the off position and touch both terminals on the side that held the wires. Pull the light switch from the wall. There is a loose connection in the circuit.

This video will show you how to check your light switch and how to replace a. You ll need screwdrivers usually one flat head and one phillips for removing the switch and disconnecting the switch wires. The switch is good if the continuity tester lights. They have two leads and a light the lights up when current is sensed.

Your switch may be attached to a frame by screws which you ll need to take out or it may just be sitting up against the wall. Once you ve confirmed that there s no electrical current in your switch you are ready to remove it.