I have a Frigidare Upright Freezer Mod: LFFH17F7HWH, Ser: WB32846645 Purchased 12/5/13. We had a power failure today and now the freezer readout on the door just keeps flashing OFF OFF OFF. It has power to it but I can't get any of the door buttons to work and the temp inside reads 45 degrees. Could you tell me what might be wrong and what I can do to correct it.