Is new SCR worked.
Overnight via Amazon Prime for £54.
Plugged it into the existing back plate, paired with the Digistat and off it went.
Who needs a plumber eh.
My Drayton SCR appears to be dead. I have a Worcester Combi boiler that is still supplying hot water to the taps but it not getting the demand for heating.
I've changed the batteries and run through the installation guide and none of the troubleshooting works.
The SCR is not showing any...