While you wait for answers, we may have found some information which could help you.
Click here for Heating Controller Boiler
Siemens brtrf keep LOSING connection?
red flashing button siemens RCRIO/433?
Have I got got a faulty programmer?
Thermostat not working?
I cannot locate my Siemens receiver?
How to use Siemens RWB7 central heating controller?