thanks mcmoby69 and alan 999, I'm not the OP and apologies I mistakenly thought it said 'BC' in the title. I'm trying to work out why I don't get any LED light at all on the boiler control unit either when the boiler fires or when I try to sync. Any advice you have would be much appreciated
Details of everything I've done are in this thread //www.diynot.com/diy/threads/salus-rt500bc-thermostat-installation.468248/
Details of everything I've done are in this thread //www.diynot.com/diy/threads/salus-rt500bc-thermostat-installation.468248/