Whirlpool WSF7256 IX - Long Black out Alarm Algorithm

Operation
Long Black Out Alarm Algorithm
Long black out check will be executed each power up only if the algorithm is enabled.
This alarm signal show a dangerous over temperature for goods (safety preservation limit).
It has been achieved during a main power failure.
This alarm will be activated:
- after a main power restoring if the appliance was in the ON condition when the black out occurred.
The electronic control must check the Freezer NTC temperature and activate the alarm if the
value inside the cavity has risen above - 8°C (-7,5°C or more) during the black out period.
That means that the temperature value at black out occurrence must be recorded and compared with the
temperature value at the moment of power restoring.
This alarm will perform the following operations:
a) display the highest temperature value (blinking) detected at the moment of main power restoring
b) the Alarm state icon for LCD and red LED for 7-segment will be send to the User Interface ;