Some help for someone who hasn't a clue

[Sssssiiiiimon]

Hi guys

Firstly I would like to thank anyone who gives any feedback whatsoever and say that I have searched for a solution for days and have found nothing. Well nothing that makes sense to me.
I have attached pictures to help out here.

I live in an apartment which has underfloor heating. It is powered by a sunvic unit. There are 2 thermostats on the walls one in our sittingroom and one in the bedroom.

Previously all I would do is press the +1 or set a time on the select xl unit and voila the heating would come on. AFAIK the select xl unit powers the other unit (I've no idea what this unit is called) the other unit is the one hooked up to the rf thermostat controls on the walls.

Problem is the batteries died over the summer and typically I didn't replace them in time. I know dumb move.

Now there thermostats don't send the signal to the large unit to tell it what temperature to fire up to and I've no heating.

My question is does anyone know or can point me in the direction to where I can have my rf thermostats talk to my heating unit.

I hope that makes some sense.

https://i.imgsafe.org/7b822dc05a.jpg
https://i.imgsafe.org/7b82435c70.jpg
https://i.imgsafe.org/7b8293e14e.jpg

 

[Darren Jackson]

Remove the batteries and turn off the power to the CH system, remove the thermostat and take it near to the receiver. Turn the power back on and reinsert the batteries and it should now work.

 

[JCplumb]

I go round to an old dears house every October to re-pair her Sunvic RF thermostat after she has changed the battery. It's a proper pain in the neck to do.
It's a different one to the one you have, this one just has 'test' and 'install' on the reciever and conbinations of lights tell you what stage of the pairing process you are up to (nightmare!).
If Darren knows yours and it's as easy as he says then Sunvic are going in the right direction.

 

[jtsplumbing]

Or just ring Sunvic and they will talk you through it