Hi. I'm Smitty. I am a professional appliance repair consultant here to help you diagnose, and repair, your appliance.
Does it feel like there is a vacuum being applied to the unit causing it to be hard to open?
Okay. What you need to do is locate the condensate drain line. it is located under the evaporator coils towards the back of the freezer compartment. The drain line is what the unit uses to vent air into and out of the enclosure. If it gets plugged you get what you have now. More than likely it is a piece of plastic wrap or something similar. At least that is what I have found the most of.
There may be a cover that you need to remove to access the drain line. Just a few screws and it comes off.
Once the drain line is clear the door will open normally.
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