Problem with temperatures in game

[StevieC]

Usually this happens when I'm not expecting and thus not prepared for it, but fortunately I managed to luck out and be ready before this bug killed yet ANOTHER spacecraft I've built. Seemingly at random, I'll encounter situations where the game says my spacecraft is at a higher temperature than it should be. And I'm not whining about difficulty, because I know it's supposed to be a numeric value and not the word "infinity". Observe.

[Silias]

I have a similar issue and found it happens usually to ships with densely packed/clipping parts. It's already on the bugtracker - http://bugs.kerbalspaceprogram.com/issues/5181 - so maybe try posting your craft/reproduction steps there. As far as I know there's no solution/fix yet.