 
                While you wait for answers, we may have found some information which could help you.
Click here for Siemens Control Heating 
                How to use Siemens RWB7 central heating controller?
 
                my rdh10rf siemans thermostat will not send signal to my boiler. ?
 
                Siemens RDJ10RF thermostat problem?
 
                Have I got got a faulty programmer?
 
                How do i stop the time from flashing on the Siemens RDJ100RF?
 
                Room thermostat?