4 Way Switch Problem


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Old 10-28-15, 05:24 PM
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4 Way Switch Problem

I bought a new house and there is a light fixture that is controlled by 3 different switches. Two of the switches turn the light on and off no problem. The 3rd switch will not turn on the light. If one of the other switches has the light on and you attempt to turn on the switch in question, it makes the light go out. Any suggestions?
 
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Old 10-28-15, 06:28 PM
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Please post a picture of the problem switch's wires and connections. http://www.doityourself.com/forum/li...rt-images.html Be sure to pull the switch out with wires still connected and give us pictures from a coupel of angeles.
 
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Old 10-28-15, 07:02 PM
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Most likely a loose connection at the problem switch.

When the problem switch is flipped so the light goes off then are the other switches unable to turn the light back on regardl
 
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Old 10-28-15, 07:41 PM
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If one of the other switches has the light on and you attempt to turn on the switch in question, it makes the light go out.
If the light is on....the switch should turn it off.
 
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Old 10-29-15, 08:57 AM
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I took that photo last night, I can take more when I get home today if they will help. I understand the switch should turn off the light if the light is on. My thought was if the switch will turn off the light, but wont turn it on, that may help someone in knowing what the issue is.
 
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Old 10-29-15, 09:11 AM
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That is one of the 3-way switches not the 4-way switch. One problem is they used back stabs. I would move the two single wires down to the screws associated with each back stab. On the terminal with three wires I would connect those three wires to a pigtail and the pigtail to the screw.

This may not fix your problem but at least we will have good connections. On the other switches move any backstabs to the screws. Please post pictures of the other switches. Be sure when you move the wires you move the wire to the screw associated with the back stab.
 
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Old 10-29-15, 06:56 PM
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This is the 4-way switch
 
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Old 10-29-15, 06:59 PM
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And here is the other 3-way
 
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Old 10-29-15, 07:12 PM
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yes. if the problem switch is flipped, none of the switches work
 
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Old 10-29-15, 07:16 PM
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Post a picture of the diagram on the back of the 4-way switch.
 
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Old 10-30-15, 09:04 AM
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Back of 4-way switch
 
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Old 10-30-15, 09:32 AM
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That's not a diagram. There should be a diagram showing how the wires are to be connected. The connections vary by manufacturer so you need to verify the cables are connected correctly. If they are then next you need to change the wires to the screws just to be sure you have good connections.
 
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Old 10-30-15, 10:04 AM
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Oh I'm clear. There is no diagram.
 
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Old 10-30-15, 10:22 AM
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I moved all backstabbed wires to the corresponding screws. No change. I replaced the switch, putting all wires to the correct screws and everything is resolved. Thanks for all the help!
 
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Old 10-30-15, 12:30 PM
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Glad you got it. Thanks for letting us know the outcome.
 
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Old 11-02-15, 12:54 PM
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If there is no diagram on the back of the 4-way switch, it was in the documentation that came with the switch. But you will find that two of the screws are brass and two of them have a dark finish. Connect the set of travelers going to one of the other switches to the brass screws, and connect the set going to another switch to the dark screws.

The common screw of a 3-way switch has a dark screw.
 
 

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