After power is switched on, the refrigerator usually takes a longer time than other time to offer the cold air, therefore In addition to the “editable alarm delay – editable”, the below digital defrost thermostats offer an extra “editable alarm delay time for the 1st Time of the controller Boot” option, it is a good method to avoid the annoying alarming when the freezer room just back to refrigeration after a long time in idle.

In other words, It counts time from the controller power on, once instant time passes this value.

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