After two months of no ice, turns out it was a frozen fill tube

Same thing happened on our KitchenAid about two years ago. Filled the mold by pouring water in as a test and it froze fine, so I knew the icemaker itself was okay. Thawed the fill tube with a turkey baster of warm water instead of a hairdryer, mostly because mine was buried behind the back panel and I didn't want to drag an extension cord in there.

Here's the part that might save you a repeat: mine froze up again about six weeks later. Turned out the water inlet valve on the back of the fridge wasn't closing fully, so it let a slow seep into the tube after every fill and it just built up ice layer by layer. A new valve was maybe thirty bucks and swapping it was two screws and a compression fitting on the supply line. I shut off the saddle valve under the sink first and put a towel down, and it still took me under an hour. If yours was caused by a misaligned tube like you said, you're probably done for good. But if it happens again in a month or two, I'd look at that valve before anything else. Mine also made a faint drip sound if the kitchen was quiet, which I only noticed in hindsight.

Ours did the same freeze-up dance on a Whirlpool side by side, and thawing the tube only bought me a couple months. Third time it plugged I finally figured out the real problem was the fill valve dripping a tiny bit after each cycle, so the leftover water sat in the tube and refroze every time. Ordered a new inlet valve online for around thirty bucks and swapped it myself, just a screw and two connectors and the water line nut. Been making ice trouble free for over a year now.

So if anyone finds themselves thawing the same tube more than once, the thaw is only treating the symptom. Let it run through a cycle and then feel the tube an hour later. If it's damp or has a droplet hanging at the end, the valve isn't seating shut and you'll be back out there with a hairdryer again before winter's over.

Also worth checking while you've got it pulled out is wheather the tube has drifted off the little bracket that holds it over the mold. Mine had worked itself a quarter inch to the side over the years, which made it dribble down the outside and ice up faster.

Been pulling those units since the days when they were all metal and you could strip them on the kitchen table. One thing I learned the hard way: when you slide the icemaker back in, make sure the fill tube actually seats over the mold opening. Mine had shifted a quarter inch out of line after one of these thaw jobs, and the water splashed and froze at the joint every cycle. Took me three rounds of chipping ice before I spotted it. A flashlight and a mirror helps you see up in there. If you ever do pull yours again, eyeball that connection before you button it back up.

This is encouraging to read because mine quit a couple weeks ago and I assumed the worst too. Haven't opened anything up yet but now I'm going to look at that little water tube first. Quick thing though, how do you actually tell if the part at the back is leaking without taking the fridge apart? I don't want to thaw it out and then have the same lump of ice show up next month and have no idea why.

Agreeing with the valve advice here. Mine did the same slow refreeze trick, and the giveaway for me was a little ridge of frost on the outside of the tube where the seep was running down before it froze. Swapped the valve and it's been making ice clean for over a year now. One tip for anyone ordering: the part number you need is on the sticker inside the door jamb, not the one behind the crisper drawers like I first thought. Ordered the wrong one twice before I figured that out.

Update: still making ice a week later, so that's something. But the reply about the fill valve dripping and the tube refreezing every couple months has me paranoid. Is there a way to tell if mine is seeping after each cycle without pulling the back off? Also checked the tube seats over the mold opening like the old timer said, and it lines up, so fingers crossed.