Hi, I am not sure if the room stat fitted to my Avanta 39c is correct. It is wire to the 24v connector and is 2 wires. The stat is a Drayton CombiStat RTS8. It does not seem to be working as well as it should. I am happy to get another one but need to know what one is compatable to my boiler. The ones Remeha stat in the mannual are hard to find i.e. a Celica 10 Thanks