Power outage alarm keeps beeping

Hi @eileen76881

Since the alarm doesn't stop after any key is pressed (power outage alarm should reset by pressing any key on the panel, once power has been restored and refrigerator set temps are OK) and you've replaced the mainboard and door sensor, perhaps some other component has failed indicating to the control board that all is not right.

Here's the service data sheet for the refrigerator.

Enter the System Diagnostic Mode, as described by the sheet and then run tests on all of the sensor and switch tests that can be done to make sure that they're all OK.

There is a note in the sheet which states "Contact TID before replacing main control board.". I assume this means their Technical department.

Perhaps there's some setting or jumper that needs to be set on the board for it to suit you particular model as the board may be used in a few other models as well. I don't know. I had to do this on my Fisher&Paykel fridge as it didn't work properly after replacing the mainboard (replacement board was the correct board) until I configured the board using info provided by F&P tech support for it to suit my exact model