3-way switch problem


Old 04-20-08, 07:39 PM
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3-way switch problem

In the home I have recently purchased, the 3-way switch on the hall stair seems to be working oddly. There is a switch at the top and the bottom of the stairs to turn on the hall light. Both switches will turn the light on/off, but only if they are in the correct position. The bottom switch must be down, and the up switch must be up for the light to be on. If you turn the switch off from upstairs, you can only turn it on from upstairs; the bottom switch will not work. Is this simply a wiring problem? Does anyone have any advice to offer?

Thanks in advance for your help.

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Old 04-20-08, 07:42 PM
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More than likely a bad switch........Provided it is a true three way. The "Crossover" in one of the switches is likely open, and as such , will not supply "Feed Thru" power to the opposing switch.....
Google 3 way switches, and get to know how they work.....It isnt as intimidating as it seems.
Old 04-20-08, 07:43 PM
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very simple traveiller wire and common wire is at wrong place what you can do is with the 3 way there is 9 combations to get it work but the fastest way to do this is check the other 3 way and look for common or darker screw make a note of colour of wire that will be common the traveller it dont matter which one .

just turn off the power source before you work on it.

Old 04-21-08, 06:31 AM
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If it used to work and no one did anything before the problem then a bad switch.
If it never worked then you have the wires wrong on one or both of the switches.

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