I've had both and both make sense. If there's no unit on display it's higher number = more cold (more power usage), without knowing how cold exactly. There is a

I've had both and both make sense. If there's no unit on display it's higher number = more cold (more power usage), without knowing how cold exactly. There is also a 0 usually, which can only mean off. Having 7 represent off would make no sense at all.