help on programer

[Pete1994]

Im looking at fitting a new programer into a Junction box,
It has 4 wires at the moment, new one is the same, so i can use the same back-plate,
my problem is (if it is a problem)....
the existing wire seems to be like a phone or data cable, it looks very thin,
there is nothing i can find stating the size of wires needed from timer to junction box, and i dont want to fit new one till i know,

Any help appreciated
Pete

 

[John506]

The saying "If it's not broke, don't fix it" comes to mind

 

[Pete1994]

I agree,

but it is broken

 

[picasso]

wiring for central heating controls should be a minimum of 0.75mm, you sure you dont have a honeywell smartfit system ?

 

[Pete1994]

no,

its a LP241,
so a re-wire back to box it is then

cheers