Hi John,
I guess the freezer in my Combination was small enough and the frost density light enough that there was never an issue with the pan overflowing. I can see how if a solid glacier had formed, that could create a much higher volume, and with this Coldspot's system, that would be possible, but since it has no drain, which would be a deal-breaker if this fridge was in striking distance, it's a moot point anyway.