There seems to be a fault in computing Kelvin from Reamur:
You get -1 Kelvin when entering -219.32 Reamur
Temperature screen
Re: Temperature screen
Which is correct as per public formular:
[K] = [°Ré] × 5⁄4 + 273.15
[K] = [°Ré] × 5⁄4 + 273.15