Have intelliflo salt cell, turns off in afternoon?

I never noticed this before so it could be normal. It turns on in the morning when my pump turns on, all green lights but some time during the day it switches off with no lights at all with the pump still running.

Now a Google search seems to indicate that it has a power down feature when it's winter and the water is cold (water temp is 60 degrees) but last year I remember if the water was cold a red light would come on and it was marked low water temp but now it's powered down completely.

Again it turns on in the morning.

Is this normal function? Just thought it was odd that it was powered off.

Help! Thanks :)