As long as switch a is in the up position the other two function as expected. A 4 way switch must be wired between two 3 way switches as shown in the diagrams on this page.
Troubleshooting 3 Way 4 Way Switches Wiring Diagrams H1
4 way switch troubleshooting. Verify the circuit is wired correctly using the following guidelines. Fixing a 3 way switch tips use a voltage tester to help with this job you just need to identify the continuous hot wire and the wire that goes to the light fixture watch the easy videos below be careful working with energized conductors click here to get tims free funny newsletter. This was already answered as part of answering question 1. Pay close attention to the colors of the screws on the 4 way switch and understand that one set of wires are attached to one set of screws and the other set of wires attach to the other set of screws. Troubleshooting 4 way switch circuits the most likely cause of circuit failure is an error in the wiring arrangement. A person intending to do any troubleshooting should be able to identify what theyre dealing with since the wiring is very different for each one.
4 way switch configurations are used to control lights with three or more switchesa 3 way switch is used on each end with one or more 4 way switches in between the two 3 way switchesthey do not have an onoff position like single pole switches. My 4 way switches dont work. Getting this reversed is a common mistake that is made when wiring 4 way switches. Remove all of the. But when switch a is down the light will not turn on at all from either of the other points. Test a 4 way switch turn off power to the switches at the circuit breaker and using a tester make sure power is off.
Using a continuity tester on the 4 way switches check continuity between one of. A is a 3 way b is a 4 way and c is a 3 way turn knob dimmer. To answer question 3. It is important to understand how these switches are wired before attempting to troubleshoot or replace. 4 common light switch problems written. Follow the how to troubleshoot 3 way switches link to test the 3 way switches.
For the first 3 way box which two of the three wires attached to the original switch continue to. We will now make measurements on the. The most common household switches are the single pole switch the three way switch and the double pole switch.
Gallery of 4 Way Switch Troubleshooting
