Fridge keeps freezing everything. It will stop running when I lower to temp knob all the way down or tap on the top of the fridge compartment. Works ok some times then will wake up to frozen milk. This started a couple of days after the door was left cracked open over night and it ran all night I'm assumeing. Not sure of the age of the unit. Bought used I've had it for 10 months.

Thank for any help.