If scheduled recordings have not been saved, perform a First Time Installation.
Press MENU and select SETTINGS. Use the button to switch to the SYSTEM tab and press OK. Use the DOWN arrow to select FIRST TIME INSTALLATION and follow the on screen instructions. This will clear any operational errors and hopefully fix the issue.
NOTE: A First Time Installation will not delete any recorded programmes but it will delete any scheduled recordings. Make a note of any future recordings before doing the First Time Installation