Electrolux drawer refrigerator model EI24RD65HSO indicates power failure "PF" in display after 1 hour of reset. I have plugged the unit into 4 different power outlets, each time resetting the PF display by touching the mute sounds button. After reset the fridge appears to run fine up until 1 hour later when it shows PF. From what I can tell the unit seems to hold temperature fine even when showing PF, as it's been doing this for a week now and has never not been cold, even in the morning after it's showed PF all evening. Help.. Quick update, I've run the same test with different outlets a few more times, the PF indicator comes on exactly one hour after the reset. Only other data point I can add is that normally when there is a power failure, for example when I unplug and plug back in the appliance, there is a little red led on the right side of the display that blinks. That does not happen after the one hour period when display turns from showing the temperature to showing a blinking PF. Not sure if that helps or not..