How can I fix my Drayton digistat remote?

I have read the forum about the Drayton digistat remote with interest. I seem to have the same problem as Julesgti. - the remote does not seem to kick my boiler into action even thought the thermostat appears to be working correctly. If I switch off the power for 10 mins, remove the batteries and reset it, it works. I don't understand about the capacitor-I have 3 units fixed to my wall the WR1, the universal UP programmer and a white box with nothing on the outside which appears to wire up the programmer, receiver and the control valve. So could anyone help please - simple English appreciated?