An ice maker is a small appliance living inside a bigger one. It needs three things to work: water delivered at the right time, a freezer cold enough to freeze it, and a working mechanism to release the cubes and know when the bin is full. When ice stops, one of those three has failed. The trick is working out which, and the kind of ice you're getting (or not getting) is the best clue.
This guide covers the ice makers inside home refrigerators. Freestanding undercounter ice machines work differently; we touch on them near the end.
Sort the problem by what you see
| What's happening | Where to look first |
|---|---|
| No ice at all, bin empty | Shutoff arm or switch, freezer temperature, water supply |
| Ice is made but won't dispense | Ice jammed in the bin or chute, auger motor, door-mounted ice room |
| Cubes are small, hollow or come out as crescents with missing pieces | Low water flow: filter, supply valve, inlet valve |
| One big clump of fused cubes | Ice sitting too long, or a freezer that warms and refreezes |
| Cloudy or bad-tasting ice | Old filter, old ice, odors in the freezer |
| Water leaking or ice forming under the ice maker | Fill tube, inlet valve, or the unit not being level |
Rule out the easy stuff
It sounds obvious, but a lot of service calls end at the shutoff. On older ice makers, a wire arm on the side lifts to stop production when the bin is full; a bag of frozen vegetables can push it up. Newer ones have a small rocker switch on the ice maker body, an ice-off option in the display menu, or both. Look for each.
Then give it time. A new ice maker, or one that was just turned back on, can take a day to produce its first full batch. The first few batches after a new filter are often small or discolored and should be thrown out.
Is the freezer actually cold enough?
Most ice makers won't cycle until the mold reaches a certain low temperature. If your freezer is running warm, the ice maker quietly waits. An appliance thermometer in the freezer should read 0°F or colder. If it doesn't, the ice maker isn't the problem: see our guide to a freezer that won't freeze.
Follow the water
With a properly cold freezer and the ice maker switched on, turn your attention to water. Trace it from the source.
The shutoff valve
Somewhere behind the refrigerator, under the sink, or in the basement ceiling below the kitchen, a small valve feeds the ice maker line. After renovations or plumbing work it's common to find it partly or fully closed. Older saddle valves, which clamp onto a pipe and pierce it, are known to clog and leak; if you find one, it's worth having a plumber replace it with a proper shutoff.
The supply line
A kinked line behind a refrigerator that was pushed back too hard will cut the flow to a trickle. So will a plastic line that has been crushed. Pull the fridge out carefully (on a hard floor, protect it) and look.
The filter
A clogged water filter restricts flow, and slow water means small, hollow cubes. Most manufacturers recommend changing the filter about every six months. Water with more sediment, including well water in parts of Potomac, can clog it faster. If the ice gets better right after a filter change, that was your answer.
The inlet valve
The water inlet valve at the back bottom of the refrigerator opens for a few seconds each time the ice maker calls for water. Over years, grit and scale can build up in its small screen, and its solenoid coils can fail. If the dispenser water is also slow, the valve or the filter is the likely cause. If the dispenser is fine but the ice maker gets nothing, the valve's ice-maker side may have failed.
The frozen fill tube
Water reaches the mold through a short tube that runs from the back of the fridge through the freezer wall, and part of that route is below freezing. If the valve drips, or the water pressure is low, water can freeze in the tube and block it. You'll often see a small icicle where the tube enters the ice maker.
You can thaw it with a hair dryer on low, keeping it moving and away from plastic parts, but if it freezes again within days, something upstream is wrong. A leaking inlet valve, low water pressure, or a freezer door that doesn't seal well are the usual reasons.
Ice rooms in the door
Many French-door refrigerators, including a lot of Samsung and LG models, make ice in a compartment inside the fresh-food door. That design works, but it depends on cold air being ducted from the freezer and on the ice room's seal staying tight. When moist air gets in, ice builds up around the ice maker and jams the auger. Signs include a frosted ice room, cubes fused into one lump, and a fan noise from the door.
A manual defrost may clear it for a while. When it keeps coming back, the cause might be a door seal, a heater, a fan or the control, and some models have updated parts meant to address it. Our Samsung refrigerator article covers the ice-room problems on those models.
What you can do safely
- Make sure ice production is turned on, and that the shutoff arm (if you have one) is lowered.
- Check the freezer temperature with a thermometer.
- Replace the water filter if it's due.
- Open the supply valve all the way and look for pinches in the tubing.
- Empty the bin, break up any clumped ice and wash the bin in warm water.
- Thaw a frozen fill tube with a hair dryer on low.
Unplug the refrigerator before reaching behind it or removing the ice maker. Don't use a knife or screwdriver to pry ice out of the ice maker, and don't pour hot water into the mold.
Undercounter ice machines
Freestanding undercounter ice makers, from brands like Sub-Zero, U-Line and Scotsman, work differently from a refrigerator's ice maker. Many make clear ice by running water over a chilled plate or grid. They need periodic cleaning and descaling according to the manual, and many have a drain line or pump that has to stay clear. A machine that makes thin or cloudy ice, or none at all, is often overdue for cleaning. When cleaning doesn't bring it back, the water pump, the cutter grid or the refrigeration system may need attention.
When to book a repair
If the freezer is cold, the water is flowing and the ice maker still isn't producing, the remaining suspects are the fridge's water valve, the ice maker unit itself, or the board that runs it. Book through our ice maker repair page. We'll measure water delivery, run the ice maker through a test harvest, and give you the diagnosis and a price to approve. Replacement ice makers vary by model, and we'll match the part to your refrigerator's model number.
Common questions
Why does my ice smell or taste bad?
Ice absorbs odors from the freezer, and cubes that sit for weeks pick up more. Dump the bin, clean it, change the filter, and check for uncovered food. If the tap water tastes off too, the source is the water rather than the fridge.
Should I turn the ice maker off if I don't use it?
Yes, if the water supply is connected but you don't want ice. Also shut it off if the water line is disconnected, since the valve may keep trying to fill and can make noise.
How long should a refrigerator ice maker last?
It depends heavily on the model and water quality. The ice maker module is replaceable on nearly all refrigerators, so a failed ice maker by itself rarely means replacing the whole fridge.