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Unfortunately it sounds like your display control board has just failed and needs to be replaced. This is by far the most common part that fails on this freezer so you can try to unplug the unit for 5 minutes to see if the electronics will reset, but if that doesn't work then your control board has just failed since the cooler button won't respond. Below is a link to the part you'd need to order---this has nothing to do with not having enough clearance just for reference.
CLICK HERE for control board
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I see you requested a phone call so I'll send you that option now, but it's not difficult to replace at all. You just slide a putty knife behind the trim around the control panel and the door. Then push in toward the center of the control panel on the hidden plastic clips and that will release the control panel so you can pull it out and replace it.
Hello again. I'm just following up because I haven't heard back from you and I see this question is still open. Is there anything else I can help you with?