I am trying to install a motion sensor in place of a 3 way switch in a
circuit with 2 switches. The model is the Levitron PR180 and Googling
does show a lot of problems with this device and 3 ways.
I started by disconnecting both ends of the circuit. Upon testing the
wires I determined that where I wanted the sensor was at the line end.
I connected the Hot Line to the black traveler and tested at the other
end. I expected black to be hot, but both black and red where hot.
Likewise back at the Line end the still disconnected red was hot. At
this point the Levitron instructions ceased to be useful as they seemed
to be betting on only one being hot. I called their tech support, but
the guy told me my switch was "wired wrong". The switch came with the
house, and worked fine before as a 3 way. I have looked at electrical
manuals for the various ways to wire 3 ways and I can't see one that
would leave both travelers hot, so maybe he's right.
Any advice would be appreciated.
If I read everything correctly, the only way you will be able to get it
to work properly at that location is to run another wire to it. Are you
ready to do that.
Also if I read it all correctly, it is not wired "wrong," but it is
wired in a way that will not work as you would like.
Thanks for the reply. 50% of the wiring is in an unfinished basement.
If I had to run a wire to the 3-way switch, the other 50%, that is
probably game over for me. "A man has to know limitations."
Or just get a X10 switch and forget the Leviton.
In a 3-way, one of the switches has the power, the other just flips it.
You have a 50/50 chance of being on the right end of the circuit.
Looks like you struck out.
My Leviton timers for 3-ways had a jumper for the other switch to make
both legs hot. The unit itself sensed the short pulse when the switch
was thrown (I think) rather than which leg was hot.
Was there a small (1" long or so) red jumper with spade connectors at
the ends included?
It did come with the jumper, but I think my problem is that this
circuit is not wired in a way that will work. That is, because my two
travelers are always hot there is no pulse to signal it to go on.
Contrary to what someone wrote above, it was my understanding in a
traditional 3-way with the load in the middle, that only one traveler
will be hot and the dipole switches break and complete the circuit by
flip-flopping between the travelers. This is what the Levitron
instructions seem to bank on too.
The best I can achieve right now is to have the switch be flipped two
times. This provides the pulse (in effect it kills power to the sensor
then restores it). I can't see this working as a permanent solution and
I am leaning to ripping the thing out, which is a pity because it works
pretty darn good, otherwise.
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