From this news article on Saratov Airlines Flight 703:
A report handed down by Russian investigators has blamed human error for the crash of Saratov flight 703, saying the pilots didn’t switch on the heat detection sensors on the plane.
Heat detection sensors sounds wrong as cause of de-icing failure.
Is it a bad translation of the sensor's name? What would be the correct name? Else please explain how the failure to turn on a heat detection sensor cause icing speed error detection.