Continental O200 engines are bad for carb Ice at startup, before there's heat in the exhaust. At Inverness I've often had the engine stop shortly after first start. With cowling off, frost can be seen forming on the outside of the carb.
You could easily have ice on a short taxi.
Carb Ice is common on the O200 in the cruise in the Scottish climate.
I fly two different aircraft, and the installation makes a difference.
I suspect Konsin on the surface makes carb Ice possible at temperatures too low for it to show on the diagrams.