We may have found other answers which could help you.
Click here for Heating Radiator Thermostat
Siemens RDJ10RF thermostat problem?
I cannot locate my Siemens receiver?
Thermostat issues- Siemens RDH10RF?
Siemens brtrf keep LOSING connection?
How do i stop the time from flashing on the Siemens RDJ100RF?
Have I got got a faulty programmer?