Replacing Alpha Easy stat thermostat with Horstmann wireless

[Winchester123]

Hello,

Old Alpha thermostat packed in and replacing with a horstmann thermostat.

This is what the Alpha looks like wired:
View media item 69789
This is the new one.
View media item 69790
Im assuming Blue Wire to neutral, Brown to SL(On) and red to L(in). But the issue is there are two red wires- both to the same one?

Any suggestions?

 

[ianmcd]

No that is incorrect

Blue Neutral
Brown live
red Live (L in) at the top
Red SL on

remove the link that is there, it doesnt matter which way round the reds go, I am guessing that the two reds were joined together temporarily when your old stat went faulty, if not it would never have worked, it would have been on all the time

 

[Winchester123]

No that is incorrect

Blue Neutral
Brown live
red Live (L in) at the top
Red SL on

remove the link that is there, it doesnt matter which way round the reds go, I am guessing that the two reds were joined together temporarily when your old stat went faulty, if not it would never have worked, it would have been on all the time

Thanks

Looks like there is a link internally somewhere in the boiler. Do you mean remove the link (Red wire) on the new thermostat transmitter?

 

[jackthom]

Yes, remove the red link on the new thermostat. It's not required and could even cause problems.

 

[ianmcd]

yes as Jack says remove the link in the new thermostat

 

[Winchester123]

Thanks guys!

All working now- I had forgotten what it was like to be able to turn off and on heating without going into a dark damp room!