Criterion Ice Maker Not Working? The 3 Parts That Usually Fail

The party was just getting started when the rhythmic rattle of my kitchen counter companion finally stopped. My Criterion ice maker, which usually churns out 26 pounds of bullet ice a day without a peep, had finally quit on me. If you are staring at a criterion ice maker not working, you know the specific frustration of seeing that 'Add Water' light blinking like a distress signal even when the reservoir is topped off to the brim.

• Quick Takeaways:
• Plastic tray gears are the primary mechanical failure point.
• Infrared sensors often fail due to hard water scale 'blinding' them.
• The water pump is prone to airlocks if the unit is moved while running.
• Portable units are significantly cheaper to replace than to professionally repair.

The Autopsy of My Dead Criterion Machine

I didn't want to drive to the gas station for a bag of frozen water at 9 PM, so I grabbed my Phillips head screwdriver. After three years of faithful service, my Criterion unit had given up the ghost, and I wanted to know why. I cleared the kitchen island and started back-shelling the casing. What I found inside wasn't some complex computer chip failure; it was a sad pile of white plastic dust sitting directly under the tray motor.

These budget-friendly machines are absolute workhorses until they aren't. They operate on a relentless cycle every 7 to 13 minutes, using a small motor to push a heavy tray of water and ice back and forth. Over thousands of cycles, that constant friction eats the cheap nylon internals. Seeing the guts of this machine spread out on my counter made me realize just how much we rely on a few cents worth of plastic to keep our drinks cold. The motor was still trying to turn, but the teeth were gone, leaving the tray stuck in a permanent limbo between 'fill' and 'dump'.

Step 1: How to Check If Ice Maker Is Working (Or Just Jammed)

Before you commit to a full teardown, you need to know how to check if ice maker is working or if it's just throwing a temporary tantrum. First, use your ears. If you hear the low hum of the compressor but no 'sloshing' sound, your water pump is likely dead or airlocked. I've found that sometimes tilting the unit 45 degrees while it's trying to fill can burp the line and get it moving again. If the machine is silent, check the thermal fuse; these units hate being used on hot patios and will blow a fuse to prevent a fire.

Next, look at the infrared sensors located near the top of the ice basket. If these are coated in a thin film of lime scale or mineral buildup, the machine 'sees' a full basket even when it's empty. A quick wipe with a vinegar-soaked Q-tip often fixes the 'Ice Full' error instantly. However, if the internals are truly fried, swapping your old unit for a more reliable Ice Maker is often the only way to avoid the headache of manual ice trays. I've timed these cycles with a stopwatch, and a healthy unit should have water hitting the cooling prongs within 60 seconds of startup.

The Real Reason Why Ice Maker Is Not Making Ice

When most people ask why ice maker is not making ice, they expect a complex plumbing answer involving water pressure or filtration. In reality, with these Criterion units, the tray motor is almost always the culprit. In my teardown, the motor was getting 12V of power, but the gear teeth were stripped flat. The tray couldn't tip to dump the cubes, so the control board just timed out and sat there in an error state. It is a mechanical failure disguised as an electronic glitch, and because these gears aren't sold separately, it usually spells the end for the machine.

Why I Still Prefer Portables Over Built-In Fridge Units

Fixing a portable countertop unit is annoying, but dealing with an in door ice maker not working is a special kind of hell that I wouldn't wish on my worst enemy. Refrigerator units are cramped, perpetually frozen, and usually require a $200 service call just to have a technician tell you the part is backordered. I've spent entire Saturdays trying to figure out why an indoor ice maker not working won't dispense, only to find a frozen water line buried deep in the door foam where no hairdryer can reach.

Is an Ice Maker Maytag Refrigerator Not Working? The Bail Arm Is Usually Guilty, but even that 'simple' fix is more of a headache than unscrewing a few panels on a portable unit. Even navigating refrigerator without ice maker problems—like the loss of freezer space to manual trays and that weird 'freezer smell' the ice picks up—is still better than a broken built-in that leaks into your floorboards. At least with a portable Criterion or similar model, if it leaks, it stays contained on your waterproof counter rather than warping your hardwood floors.

Time to Upgrade: What I Replaced It With

I spent an hour looking for replacement gears for the Criterion, but they are proprietary and cost nearly $40 after shipping. For a machine that cost $100 new, it simply wasn't worth the bench time or the risk of it failing again in six months. I decided to move on to something that felt less like a disposable appliance. I upgraded to a Black Ice Maker that matches my modern kitchen aesthetic much better. It runs at a significantly lower decibel level—around 42dB compared to the Criterion's 52dB—and the first batch of ice is ready in exactly 6 minutes. Sometimes, the best repair is knowing when to walk away and upgrade to something that won't leave you with a warm drink in the middle of July.

FAQ

Why is my Criterion ice maker light flashing?

If the 'Add Water' light is flashing but the tank is full, the pump is likely clogged or airlocked. Try descaling the unit with a 1:1 vinegar and water solution to clear any mineral blockages in the intake line.

How do I reset my portable ice maker?

Unplug the unit from the wall and let it sit for at least 15 minutes. This allows the capacitors on the control board to discharge and resets the 'harvest' cycle. When you plug it back in, the tray should automatically attempt to find its 'home' position.

Why does the ice taste like plastic?

This is common in new units or units that have been sitting. Run two full cycles with a mixture of lemon juice and water, then discard the ice. This neutralizes the manufacturing oils and refreshes the internal lines.