Dear speculators,

Could somebody explain the next evaporative cond. observing:
BAC VXC110 507a
in summer at 35C/35% Tc=40C 100% fan power, dT=15K
in winter at -6C/80% Tc=30K 100% fan power, dT=36K
So it's looks like evaporative condenser in winter operation can't evaporate water and comes to almost clear heat exchange without evaporation, like dry condenser but with poor heat exchange surface.
Am I right?