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Discussion Starter #1
Ceiling fan light 3 way wiring problem

I'm trying to wire two 3-way switches to the light fixture on a ceiling fan. One switch is a Cooper over/under Duplex switch with the top being a single pole switch that controls the fan and a 3-way switch on the bottom for the light. The other side of the room has your standard 3 way toggle switch. Power is coming into the duplex switch side then to the fan/light and on to the 3 way toggle switch side. No problem with the fan switch. Below is how I wired the light. I can turn the light on and off at the right side switch (toggle) and then and only then can I turn off the light at the duplex switch (bottom 3 way). When I turn the light off at the right side switch (toggle), I cannot turn it on at the duplex. How can I rectify this situation without going from switch to switch to light? I wired the 3 way switch on the Duplex side the same as this attached diagram. Black wire from the right side 3 way toggle switch is attached to the blue/light wire in the fan.
I attached the white wire coming from the left side duplex switch side to the Common white wire on the fan, which I believe is common to the circuits for the entire fan.



 

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A "Handy Husband"
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The diagram you show is correct, if if doesn't work:

You wired differently than the diagram

Or

You have a bad switch.

Check the terminals on the 3 ways and be sure you have correctly id'd the commons.
 

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What cable did you run between the double switch and the light? You need four wires + ground to make it work properly
 

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A "Handy Husband"
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What cable did you run between the double switch and the light? You need four wires + ground to make it work properly
I do not see the need for a 4th wire. He shows the neutral connected to the light and the hot extended to the far end switch common. Plus the 2 travelers.

The need for a 4th wire would only be to comply with NEC 2011 and have a neutral in the far end switch box.
 

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If the push in 'back stab' holes were used---some times they don't line up with the colored screws---causing a miswired circuit
 

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I do not see the need for a 4th wire. He shows the neutral connected to the light and the hot extended to the far end switch common. Plus the 2 travelers.

The need for a 4th wire would only be to comply with NEC 2011 and have a neutral in the far end switch box.
He has a second switch in the first box to control the fan. You need a fourth wire for that.


One switch is a Cooper over/under Duplex switch with the top being a single pole switch that controls the fan and a 3-way switch on the bottom for the light.
 

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A "Handy Husband"
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Joed,

I assumed he was only showing us the wiring for the light. He did say "No problem with the fan switch".

Poster, did you run another cable for the supply to the fan?
 

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Discussion Starter #10
Diagram on how to wire 2 - 3 way switches to a ceiling fan

What cable did you run between the double switch and the light? You need four wires + ground to make it work properly
I ran 14/2 wire to the first switch, 14/3 to the fan and also to the second/regular trip switch.
 

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Discussion Starter #11
Diagram on how to wire 2 - 3 way switches to a ceiling fan

most likely one of the travelers is miswired in rare ocasions its a faulty switch

Thanks!! I will check my wiring again (4TH OR 5TH TIME) and I may also replace the 3-way trip switch as advised.
 

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Discussion Starter #12
Diagram on how to wire 2 - 3 way switches to a ceiling fan

The diagram you show is correct, if if doesn't work:

You wired differently than the diagram

Or

You have a bad switch.

Check the terminals on the 3 ways and be sure you have correctly id'd the commons.
I will completely go through my wiring of these switches and then swap out the last 3-way trip switch. I hope this works because I haven't been able to see the obvious.
 

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Discussion Starter #13
Diagram on how to wire 2 - 3 way switches to a ceiling fan

Joed,

I assumed he was only showing us the wiring for the light. He did say "No problem with the fan switch".

Poster, did you run another cable for the supply to the fan?
Yes I ran a 14/2 wire from the top single pole switch to the fan black wire. As I stated, the fan works just as it is supposed to with the single pole switch.
 

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Licensed Electrician
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Ok, lets get specific here...

You ran a 14/2 to the stacked switch.

You ran a 14/3 from the stacked switch to the fan box.

You ran a 14/3 from WHERE to the other switch box? This is the important information. If you ran this cable from the fan box to the 2nd switch box, then you will need another wire.
 

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I see you added some information. Do us a favor...post a list of each cable you used from where to where for both switches.
 

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Discussion Starter #16 (Edited)
Diagram on how to wire 2 - 3 way switches to a ceiling fan

Ok, lets get specific here...

You ran a 14/2 to the stacked switch.

You ran a 14/3 from the stacked switch to the fan box.

You ran a 14/3 from WHERE to the other switch box? This is the important information. If you ran this cable from the fan box to the 2nd switch box, then you will need another wire.
14/2 power in to the Cooper over/under switch
14/2 from the top single pole switch to the fan (black wire)
14/3 from the bottom 3-way switch to the light in the fan (blue wire)
14/3 from the light (blue wire) in the fan to the 3-way toggle switch
In the Cooper over/under box I wire nutted the 3 white wires together (14/2 power in, 14/2 out to fan and 14/3 out to light) and then connected them to the white Common wire in the fan (only one white wire in the fan unit)
The red wire coming from the stacked Cooper switch was wire nutted together at the fan and passed on to the 3-way toggle switch

I hope this makes sense!!! If there is something else I need to do, please let me know.
 

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This is what you should have...

 

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Discussion Starter #18
Diagram on how to wire 2 - 3 way switches to a ceiling fan

This is what you should have...

I printed out your wiring diagram and will compare it to how I actually wired the light on Monday. Thank you VERY much for this information.
 

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The drawing above will work but does not meet code. You must use the black or red coming back form the switch as the connection to the light blue wire.
 

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The drawing above will work but does not meet code. You must use the black or red coming back form the switch as the connection to the light blue wire.
You are supposed to tape the white wire black. I did forget to add that in my "cleaned up" drawing.
 
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