Hi . turn the power off for 20 seconds, then back on
Ok . do you mean the control panel on the boiler or a different external one?
Hi , do you have a model number for the control box? Please
Does it look like this?
Ok , I will try to locate it . if you getvtyhe picture/ photo up and click copy on it , you can then paste it into the chat box where we write
Hi , is it a buderus controller? Or a different make?
Ok , think we need to somehow upload a picture. Is your heating working? Is it the time settings you are wanting to alter?