Digistat RF3?

I had the same problem - the transmitter not talking to the receiver. In the end I decided to replace the thermostat / transmitter but decided to take the thing apart as a last resort 'just to have a look'. I accidentally swapped the two battery carriers round when I put the thing back together only to find that the display was failing - indicating no power. On close inspection there was some slight corrosion on the contacts in the carrier preventing the batteries delivering power. A little sand paper did the trick.

Stuart
December 2011

First check that the transmitter batteries (in the right hand drawer) are good. The left had drawer batteries control the programming and the right hand ones power the transmitter. If this is OK then find the receiver which should be next to your boiler. There should be a switch nearby that powers the receiver and the boiler. Switch it off for 30 seconds then back on again. Press and hold ON the two buttons simultaeously. These are below the red light on the receiver. The red light should flicker. Then release the buttons. check that the Digistat RF3 switches on and off the central heating on the boiler by pressing the + button repeatedly until the flame symbol appears. After a moment, the boiler central heating should burst into life. Other things you should check is that the pressure gauge on the main boiler is showing above one Bar, or the system will not fire up, even if the Digistat receiver is working OK.

Clive H.
September 2009

take the stat to the receiver box and press both buttons on the receiver unit to re-link the units

confused
October 2008

Bit long winded to explain you can download instructions Try
http://www.invensyscontrolseurope.com/NR/rdonlyres/E5EDF1B0-1E47-4305-B312-09FC20672644/0/DigistatRFSCRFullInst.pdf

a
October 2008