double switch problem

[indiaregina]

i have removed an old brass double switch from the hall. this switch opperates the upstair light and hall. i have replaced it with a new double switch and the upstair light will not go off if the switch upstais is left on.. i have put the two red wires in to the com and connected them and the two black wires in to L1 on both switches any suggestions what i have done wrong

 

[Spark123]

Can you remember how the old one was wired? Was there a link wire in there between the two switches?

 

[sparkwright]

don't you have a 3 core and earth cable (red, yellow, blue and earth) running between the up switch and the down switch?

 

[ColJack]

only one of the reds is a live feed, the other is a strapper along with one black that goes upstaris to the other switch..

with the power off, open the upstairs switch and connect together the red and black that are in L1 and L2 ( or L2 and L3 if your switch is marked L1, L2, L3 rather than C, L1, L2. )

now using a multimeter on the continuity setting, check at the downstairs switch between the red and black from each cable..
one pair will read continuity.. those are the strappers..

now, they go into L1 and L2 on one switch, the black from the other cable goes to the other L1, and the red goes to C or Com, and is linked to the other C or Com too..

put the upstairs switch back how it was..
turn the power back on..

 

[indiaregina]

Can you remember how the old one was wired? Was there a link wire in there between the two switches?

there was two red wires and a com port with red wire i earth and two black cables. i have connected the switch as follows red wire in com port with com wire crossing between them also the black wire in L1 in both switchs. you can turn the upstairs light off from downstairs but not upstairs.....

 

[sparkybird]

did your old switch have 3 terminals per switch - L1, L2 and Comm?

Does your new switch have 3 terminals per switch or just L1 and Comm?

SB

 

[indiaregina]

did your old switch have 3 terminals per switch - L1, L2 and Comm? no there was com A B1 B2
UPPER, AND LOWER IS A1 A2 B
Does your new switch have 3 terminals per switch or just L1 and Comm?

SB

yes but the layout is different on the new one.

 

[indiaregina]

did your old switch have 3 terminals per switch - L1, L2 and Comm? no there was com A B1 B2
UPPER, AND LOWER IS A1 A2 B
Does your new switch have 3 terminals per switch or just L1 and Comm?

SB

yes but the layout is different on the new one.

IT ALSO HAS THREE TERMINALS

 

[ColJack]

I've told you what to do above..
try that then report back to us..

 

[indiaregina]

I've told you what to do above..
try that then report back to us..

no the swithch i am putting on has 1 way AND 1-2 way port per switch and a com. i have tried what you said but being quite new to diy as my husband is working away i thought i would impress him and i think it has been made worse HELP!!!!!!!

 

[ColJack]

just post a photo of the switches and the connections of the existing and we'll advise further..