Why is my ice maker not working?

An ice maker that stops producing ice can stem from simple fixes like a turned-off switch or clogged water filter, or more complex issues like a faulty valve or compressor. Most problems can be diagnosed and resolved at home in minutes, though a few require professional service.

Quick checks (try these first)

Verify the ice maker is turned on — look for an illuminated LED light on the control panel or ensure the power switch is in the "on" position. Check that any control arm is in the down position, not up.
Confirm the freezer temperature is set to 0°F (−18°C) or below. If it's warmer, adjust the thermostat and wait 24 hours for the compartment to reach the correct temperature.
Check that the water supply line is connected behind the refrigerator and the shut-off valve is fully open. Look for any visible kinks or twists in the line.
Inspect the water filter — if it's been more than 6 months since replacement, replace it now. A clogged filter is one of the most common culprits.
If the unit is new, prime the water system by running 2–3 empty ice cycles to purge air from the lines.
Unplug the unit for 5 minutes, then plug it back in to perform a soft reset.

Freezer temperature is too high

The most frequent reason an ice maker stops working is that the freezer temperature has drifted above the required threshold. Ice makers need a freezer set to 0°F (−18°C) or colder to produce ice. If the temperature is warmer than this, the ice maker cannot freeze water fast enough, resulting in no ice, small cubes, or hollow cubes.

If both the freezer and refrigerator feel warm, the problem may be dirty condenser coils. When coils are coated in dust and debris, the refrigerator must work harder to maintain cool temperatures and may fall behind.

Check your freezer's thermostat setting. It should be between 0–5°F for optimal ice production.
If you've adjusted the temperature, wait a full 24 hours for the compartment to stabilize before expecting ice production to resume.
If the freezer is cold but the refrigerator compartment is warm, locate the condenser coils (usually at the back or bottom of the unit) and vacuum away dust and debris with a soft brush attachment.
Ensure nothing is blocking air vents inside the freezer or refrigerator compartment.

Water filter is clogged or old

A clogged or expired water filter is one of the easiest problems to fix and one of the most common causes of ice maker failure. Filters should be replaced every 6 months, or sooner if you notice cloudy water, slow ice production, or small cubes. A blocked filter restricts water flow to the ice maker, preventing it from filling properly.

Locate your refrigerator's water filter — check your owner's manual for the exact location, as it varies by model.
Replace the filter with a new one rated for your refrigerator model. Use only manufacturer-approved filters or certified third-party equivalents.
After installing a new filter, run water through the dispenser for 3–5 minutes to flush the system and remove air.
If your ice maker is a portable countertop unit, check the water screen in the reservoir for debris and rinse it clean.

Water inlet valve is frozen, clogged, or faulty

The water inlet valve is an electronically controlled component that opens and closes to supply water to the ice maker. If the valve becomes clogged with mineral deposits or frozen water, or if water pressure is too low, it cannot deliver the water needed to make ice. A faulty valve may also fail to open at all.

The valve requires at least 20 psi (pound-force per square inch) of water pressure to function properly. If pressure is lower, the valve may not open fully, resulting in no ice or very small cubes.

Test your home's water pressure: shut off the main water supply, disconnect the water line that feeds the ice maker, place it over a bucket, and turn the water back on. If the flow is weak, your water pressure is too low and may require a pressure regulator or professional plumbing assessment.
If the refrigerator temperature is set too low (below 33°F), the inlet tube feeding the ice maker can freeze. Adjust the refrigerator thermostat to 33–40°F and wait 24 hours for the line to thaw.
Check that the correct saddle valve is installed on your water line. An incorrect valve can cause low water pressure and small or hollow ice cubes.
If the valve is clogged, it may need to be replaced by a professional, as most ice maker components are not sold separately.

Ice buildup or jam inside the ice maker

Ice can accumulate inside the ice maker tray or bucket, preventing new ice from being ejected or the mechanism from moving. This often happens after power interruptions, irregular use, or if the freezer temperature fluctuates. Frost buildup on the ice bucket or inside the freezer is also a sign of a sealing or temperature problem.

Open the freezer and inspect the ice bucket and tray for visible ice buildup or frost.
If frost is present, unplug the unit and allow it to thaw for several hours or overnight.
Remove the ice bucket (if removable) and use a soft cloth or plastic scraper to gently remove any ice or frost. Do not use sharp metal tools, as they can damage the mechanism.
Dry the area thoroughly before reinserting the bucket and plugging the unit back in.
Check that the freezer door closes completely and that the ice bucket is fully seated and locked in its proper position.

Water supply line is kinked, disconnected, or frozen

The water line that feeds your ice maker can become kinked, twisted, or disconnected, cutting off the water supply. In cold environments or if the refrigerator temperature is set too low, the line itself can freeze, blocking water flow.

Unplug the refrigerator and pull it away from the wall to access the water line behind it.
Inspect the entire length of the water line for kinks, twists, or visible damage. Straighten any kinks gently.
Confirm the line is firmly connected to both the water shut-off valve and the ice maker inlet.
If the line appears frozen, leave the refrigerator unplugged for several hours to allow it to thaw, or use a warm (not hot) cloth to gently warm the line.
Adjust your refrigerator temperature to the recommended range (33–40°F) to prevent future freezing.

Compressor or pump is faulty

If the ice maker is running and the water supply is connected, but no ice is being produced, the compressor (which cools the ice maker) or the water pump (which circulates water) may be defective. A faulty compressor might indicate a refrigerant leak, while a pump issue could stem from debris or internal failure.

Listen for unusual sounds coming from the ice maker — a complete absence of sound or a grinding noise can indicate a motor or pump problem.
Check that the ice maker cycles on and off as expected. If it runs continuously without producing ice, the compressor may not be cooling properly.
For portable ice makers, ensure the unit is on a level surface and plugged into a working outlet. Test the outlet by plugging in a lamp or phone charger.
If you suspect a compressor or pump failure, the ice maker assembly typically requires professional replacement, as individual components are usually not sold separately.

When to call a professional

If you've completed all the quick checks and the ice maker still isn't working, or if you encounter any of the following red flags, contact a qualified appliance repair technician:

The ice maker assembly is visibly cracked, damaged, or leaking water inside the freezer.
The compressor or pump is making grinding, squealing, or other unusual mechanical sounds.
Water is pooling inside the freezer or refrigerator compartment despite a properly connected supply line.
The water inlet valve is frozen solid and won't thaw after 24 hours at the correct temperature.
You've replaced the water filter and adjusted the temperature, but the ice maker still produces no ice after 48 hours.
The ice maker is brand new and still not working after priming the water system through multiple cycles.

Frequently asked questions

How long does it take for a new ice maker to start producing ice?

If your refrigerator is newly installed, allow 24 hours for the freezer to reach 0°F. Before making ice for the first time, run 2–3 empty ice cycles to prime the water supply system and purge air from the lines. You may see no ice or partial ice in the first few cycles — this is normal.

Can I use my ice maker if the freezer temperature is above 0°F?

No. The freezer must be at 0°F (−18°C) or colder for the ice maker to produce ice. If the temperature is warmer, adjust the thermostat and wait 24 hours. If the freezer still won't reach 0°F, the refrigerator's cooling system may need professional service.

What should I do if my water filter is clogged?

Replace the filter immediately with a new one rated for your refrigerator model. After installation, run water through the dispenser for 3–5 minutes to flush the system. Replace filters every 6 months or sooner if you notice cloudy water or slow ice production.

Why is my ice maker making small or hollow cubes?

Small or hollow cubes usually indicate low water pressure, a clogged water filter, or freezer temperatures that are either too high or too low. Check that your water filter is fresh, the freezer is set to 0°F, and the water supply line has no kinks. If the freezer is colder than −10°F, adjust it to 0°F, as extremely cold temperatures can cause cubes to freeze too quickly on the outside.

How do I test my home's water pressure?

Shut off the main water supply valve, disconnect the water line that feeds the ice maker, place it over a bucket, and turn the water back on. If water flows out in a strong, steady stream, your pressure is adequate (at least 20 psi). If the flow is weak or slow, your water pressure is too low and may require a pressure regulator or professional assessment.

Can I fix a frozen water inlet valve myself?

If the inlet tube is frozen, you can help it thaw by adjusting your refrigerator temperature to 33–40°F and waiting 24 hours. If the valve itself is clogged with mineral deposits, it typically requires professional replacement. Most ice maker components are not sold separately, so the entire assembly may need to be replaced.