2 switch wiring

[teknicolourfox]

Ive recently moved into a new house and living room switch isnt working.

it controls both the living room and dining room lights (two switches, one for each) the dinning room also has a seperate switch actually in the dinning room, this isnt working at the moment either.

The switch in the living room is a newish one, it has modules behind each switch that are labeled:

L1 COM L2...

so switch 1 has L1 COM L2
and switch 2 has L1 COM L2

none of the wires were connected at all when i removed the switch from the wall... there are four wires

two red, one blue and one green/yellow, there was also a small wire hanging out of one of the COMs so Im presuming this is/was used to loop to one of the other connections.

any ideas what should go where

Cheers

 

[plugwash]

that sounds a mighty odd combination of colors (and too few wires to support the switching setup you say is meant to be there), are you sure there isn't a black wire and/or a yellow wire that you've missed?

also there should be an earth from each cable (assuming it is cables and not singles in conduit).

 

[teknicolourfox]

hiya, Ive checked again and there is a yellow cable as well as the earth cable.

 

[Danny G]

Not sure if you've managed to fix it by now but I was reading your problem and thought just in case here you go...

switch 1:

L1 = the 2 red cables
L2 = Blue (plus a black if present!)
Com= Yellow

switch 2:

L1 = red
L2 = Blue
Com= Yellow

This is a conventional 2 way lighting circuit where switch 1 used to be a single way switch.

 

[Steve]

Not sure if you've managed to fix it by now but I was reading your problem and thought just in case here you go...

switch 1:

L1 = the 2 red cables
L2 = Blue (plus a black if present!)
Com= Yellow

switch 2:

L1 = red
L2 = Blue
Com= Yellow

This is a conventional 2 way lighting circuit where switch 1 used to be a single way switch.

switch 1 is a 2-gang affair. byebye your theory

And if the black weren't present, it still wouldn't work. So why say "if present"? He gives no indication ther is a black there, so why assume there is?