Your boiler's room controller appears to be set up incorrectly, so the boiler may not be responding to the heating schedule or temperature you expect, but this is usually a settings issue that can be corrected.

DIY fix possible

Check the Vitotrol remote control's display for the time, date, and heating schedule, and correct any obvious errors.Confirm the Vitotrol type and heating circuit settings match the manual for your model, and make any changes as described in the controller's instructions.Switch the boiler off at its isolator or power switch for 30 seconds, switch it back on, and check whether the bE code clears.If the code returns, contact a Gas Safe registered engineer to reprogram or check the controller.