Wall switch timer - wiring?

[macblack]

I'll probably get shot down in flames for asking so go easy on me! I don't pretend to be any sort of expert, other than a ameteur diy'er..

I bought a wall switch timer that directly replaces a light switch. Thought this would be easy enough to connect.

My house is relatively new (12 years old), behind each light switch there is an earth and two red wires which I assume are live and switch live (or load).

The wiring diagram is as follows:

Untitled

• macblack
• 6 Jan 2012
• 1

But the switch doesnt work, there is a LCD display for programming, but surely the switch would either need a neutral or its own battery for power? There's no mention of a battery in the instructions. I just don't get it???

Your help would be appreciated..

Mac

 

[stillp]

The timer would be powered by a small current that flows in the load. Assuming the load is an incandescent lamp, that small current would not be enough for the lamp to light. If you've fitted a compact fluorescent or LED lamp, it's higher impedance will not allow sufficient current to flow to energise the timer.

 

[AndyPRK]

If you have a proper bulb fitted, then swap the red wires around