Switch is switching the wrong light

[Zaidee]

I have been asked about a switch unit in a hall which has a switch for the hall and another for an outside light. After changing this switch to a sensor switch everything is working fine apart from when hall light is switched on it switches the bedroom light on as well.

 

[telectrix]

does the bedroom light switch still operate the bedroom light?

 

[Rpa07]

More information and a couple of more clear photos will give more to go on. Is this the old switch and what does the sensor switch look like. Thanks

 

[Zaidee]

Apologies. The switch is new and is a stamdard 1 gang 2 way switch. The sensor is on the light fitting.

 

[Zaidee]

The bedroom light does still work

 

[Zaidee]

I have not physically been to this job or had anything to do with it until the problem arose. Just had another look at the picture myself and it looks like the loop is across the l2 and not the common. Will get the owner to change that. Could that have caused the issue?

 

[Taylortwocities]

Could that have caused the issue?

Almost certainly.