Hi my name is ***** ***** in the UK - first thing to do is unplug the appliance, leave it off and reconnect after ten minutes - then come back to me and confirm it has reset?
Has it reset the appliance?
OK as you look at the display on the front do the following - press and hold the top left and top right buttons in, the display will start to flash, keep the buttons in until the display goes blank. Can you tell me if any parts of the leds are still lite?
OK this indicates that there are no problems with the electronics and does a factory reset - the appliance should now be working satisfactorily.
Were you pressing the quick freeze and vacation buttons for six seconds or more and then it started to blink?
OK now if you look at the display it should have then gone bank for a few seconds. If after this period you can see vertical or horizontal bars in the place that was originally the temperature digits can you tell me which they are ie refrigerator side top center horizontal bar or perhaps freezer section bottom right hand vertical bare etc
OK well the electronics are OK so it must be the keypad on the front door that needs changing or the connection between the keypad and the main pcb. Firstly I would check that the connectors under the freezer door hinge cover are OK and then if that doesnt work take off the display panel frame and see if you can see any broken wires in the door area.