We may have found other answers which could help you.
Click here for Boiler Turn Hot Tap Light
How to fix my fireplace?
Greenstar 24Ri boiler, fast flashing - can I reset?
Remove cover off gas boiler?
How do i stop the time from flashing on the Siemens RDJ100RF?
Siemens RDJ10RF thermostat problem?
Remove boiler cover?