Right here we go. Just had my new battery delivered. Open the box and fitted it, red light on keypad went out. keyed in my pin code to reset but still saying lid tamper, so I turned off the mains (but obviously the keypad stayed alight cos of the new battery), tried my pin code again, nothing, tried 7890, nothing just says invalid code.
Current position: Lid Tamper flashing, Reset Required and Red spanner light back on.
Where do I go from here please? Thanks