An ice maker not making enough ice is, in most cases, working correctly and slowly. Its output depends on three things: how much water it gets per fill, how fast the freezer can freeze that water, and how often the cycle is allowed to run. Reduce any one and production falls, long before it stops.
So the first job is to find out whether there is a fault at all, by measuring what your ice maker actually produces against what it is designed to. A fridge ice maker makes a few kilograms a day at best, which is less than many people expect.
This guide shows how to measure output, lists the causes of low production in order, explains what the cubes themselves tell you, and sets out what can be done when the machine is healthy and the household simply needs more. It covers fridge ice makers, with sections on undercounter, countertop and commercial machines. For a repair, see fridge ice maker repair in Dubai.
CauseClueWho fixes it
Normal output, high demandBin emptied faster than it refills, especially in summer or with guestsNo fault. See the section on getting more
Clogged water filterSmall or hollow cubes, slow dispenserYou
Low water pressure or a restricted supplyAs above, worse at certain times of dayYou, plumber or building
Freezer warmer than minus 18 degrees CLong cycles, soft ice creamYou, or a technician if it is a cooling fault
Blocked air vents or an overfull freezerSlow freezing near the ice makerYou
Door opened often, or not sealingFrost, temperature swingsYou
Bin sensor stopping production earlyBin never more than half full, cubes heaped under the armYou
Dirty condenser or a hot locationFridge running constantlyYou
Partly frozen fill tube or failing inlet valveCube size shrinking over weeksTechnician
Ice maker ageingSome cubes stick, cycles skippedTechnician
Ice melting or clumping after it is madeWet, fused ice in the binSee the storage section
Measure first. It tells you whether to look for a fault or to manage demand.
Output figures are in the manual or on the maker's specification sheet for each model, and they vary. The table gives typical ranges so you know what order of quantity to expect.
TypeTypical output in 24 hoursTypical storageNotes
Fridge freezer ice maker, standardAbout 1 to 2 kg1 to 2 kgRoughly 80 to 130 cubes a day. One batch of 8 to 10 cubes every one and a half to three hours
Fridge with a fast-ice or boost modeMore while the mode runs. The manual gives the figureAs aboveBoost modes usually switch off after 24 hours
In-door ice maker on a French door fridgeAbout 1 to 1.5 kgAbout 1 kgSmaller bin and more sensitive to door opening
Slow clear-ice or sphere makers in a freezer drawerA few large pieces a daySmallSlow by design
Countertop ice makerAbout 10 to 15 kg claimed0.5 to 1 kg basketThe claim assumes the basket is emptied constantly, in a cool room
Undercounter clear-ice machineAbout 10 to 30 kg10 to 15 kgBin is not refrigerated, so some ice melts
Commercial cuberTens to hundreds of kgSeparate binRated at a mild room and water temperature
A household of four using ice in every drink on a hot day can get through more than a fridge ice maker produces. That is not a fault. It is a common reason for this complaint in a Dubai summer.
Makers measure output in a moderately warm room with cool inlet water, the door shut and the bin being emptied. A real kitchen, with the door opening, warm supply water in summer and a full freezer, gives less.
1
Check the freezer is at about minus 18 degrees CWith a thermometer near the ice maker.
2
Empty the ice bin completelyTip the ice into a bag in the freezer if you want to keep it.
3
Note the time and leave the ice maker aloneDo not take ice, and open the freezer as little as possible.
4
After 24 hours, weigh the ice in the binKitchen scales and a bowl. Or count the cubes.
5
Compare with the figure in your manualOr with the typical ranges above.
ResultConclusion
At or near the stated figureThe ice maker is healthy. Your demand exceeds its capacity
About halfA restriction or a temperature problem. Work through the causes
A few cubesClose to failing. Treat as not making ice Bin filled part way and stopped earlyThe bin sensor is reading full too soon
Good weight, cubes small and manyShort fills
Fewer batches than expected, cubes full sizeSlow freezing or skipped cycles
If you can, note how often you hear the ice drop. A batch every one and a half to three hours is normal. Four hours or more between batches means slow freezing. Regular batches of undersized cubes means a fill problem. Those two findings lead to different halves of the list.
CubesWhat it meansWhere to look
Full size, solid, fewer than expectedEach cycle is taking too long, or cycles are being skippedTemperature, airflow, bin sensor
Smaller than they used to beLess water per fillFilter, pressure, valve, fill tube
Hollow, or thin shellsShort fill, or harvested before frozen throughFilter and pressure. Then temperature
Different sizes along the trayFridge not level, or the fill spout aimed off centreLevel the fridge. Check the spout
Only some pockets filledVery short fillSupply
Joined together in a rowSlight overfill. Not a production problemNormal on many units
Wet, or stuck together in the binMelting after harvestStorage section
CloudyNormalNo action
Flecked with grey or blackMould coating wearingThe unit is near the end of its life
Small cubes are the most useful clue of all. They mean the ice maker is cycling normally and being short-changed on water, and that points straight at the filter.
Is your demand more than the ice maker can meet?
A little arithmetic settles whether you have a fault or a mismatch. Ice use is easy to underestimate.
UseRough quantity of ice
One tall glass filled with cubesAbout 100 to 150 g
One person, six iced drinks in a dayAbout 0.6 to 0.9 kg
A household of four at that rateAbout 2.4 to 3.6 kg
A jug of iced water or juiceAbout 300 to 500 g
A blender drink or smoothieAbout 150 to 250 g
Filling a cool box for a day out3 to 5 kg
Drinks for ten guests over an evening5 kg or more
Set that against a typical fridge output of 1 to 2 kg a day and a bin that holds about the same. A family that drinks iced water all day in summer uses more than the ice maker makes, every day, and the bin is always nearly empty. Nothing is broken. The bin in a fridge is a reserve for ordinary use, topped up slowly. It was never meant to supply a party or a cool box.
If your own figures come out well under 1 kg a day and the bin is still empty, the ice maker is underperforming and the causes below apply.
Three things change between winter and summer, and all of them reduce ice production on a perfectly healthy fridge.
ChangeEffect
Supply water is warmerWater from a roof tank or sun-heated pipework can arrive much warmer than in winter. Each fill takes longer to cool to freezing before it can start to freeze
The kitchen and the space behind the fridge are warmerThe fridge sheds heat less easily, so the freezer runs a little warmer and the compressor runs longer
The door is opened more, and more ice is takenMore warm, humid air enters, and the bin is emptied just as production slows
Clean the condenser coil before the hot months.
Check the clearances round the fridge and keep the kitchen air conditioning on during the day.
Set the freezer a degree or two colder for the season.
Change the filter at the start of summer, so that every fill is complete.
Start banking ice in freezer bags.
If the fridge is on a balcony, in a garage or in an outdoor kitchen, expect a large drop and consider moving it.
A filter that is part blocked still passes water, only more slowly. The ice maker's valve opens for a fixed few seconds per fill, so slower flow means less water in the mould, and smaller cubes. Production by weight can halve while the ice maker appears to be working perfectly.
If the filter is more than six months old, replace it.
If the dispenser flow has slowed, replace it regardless of age.
Test by fitting the bypass plug for a day. If the cubes return to full size, the filter was the cause.
After fitting a new filter, run two or three litres through the dispenser and discard the first batches of ice.
Use the correct type. A poorly fitting copy can restrict flow from new.
If filters clog in weeks, the incoming water is carrying sediment. Have the tank cleaned in a villa, or raise it with building maintenance.
The filter light counts time or volume. It does not measure blockage. A filter can be clogged well before the light comes on.
Cause 2: water pressure and supply
The same short-fill effect comes from low pressure or a restriction before the fridge.
ProblemClueFix
Supply tap part closedOften after other work under the sinkOpen fully
Line kinked behind the fridgeStarted when the fridge was movedRe-route or replace
Saddle valve cloggingOld installation, flow fading over yearsReplace with a proper isolation valve
Low building pressure at peak timesCubes smaller in the evening than the morningBuilding maintenance, or a booster
Villa roof tank with little headPoor flow at all upstairs tapsBooster pump
Fridge fed from an under-sink purifierFlow limited by the purifierFeed from the cold mains, or a suitable booster
Inlet valve screen silting upSupply strong at the line, weak inside the fridgeTechnician: valve
Makers commonly quote a minimum supply pressure of about 20 psi, or 1.4 bar. Many ice makers also have a fill adjustment that lengthens the valve's open time to suit low-pressure sites. It is worth asking a technician to set it if your pressure is steady and low. It is not a substitute for clearing a restriction. More in our guide to an ice maker not filling with water.
The colder the freezer, the faster each batch freezes and the more batches fit into a day. A freezer at minus 14 instead of minus 18 keeps food frozen and makes noticeably less ice.
Freezer near the ice makerEffect on production
Minus 20 to minus 22Fastest. Some makers suggest a colder setting when more ice is wanted
Minus 18Normal
Minus 15Noticeably slower
Minus 12Slow and unreliable. May stop
Set the freezer to minus 18, or a degree or two colder if you need more ice.
Use the fast-freeze, power-freeze or ice-plus function before a party. It usually lasts 24 hours.
Check with a thermometer, not the display.
Setting the freezer colder uses more electricity, and very cold settings can encourage a frozen fill tube on some fridges. A degree or two is usually enough.
Cause 4: airflow, loading and door openings
Keep the air vents in the freezer clear. Cold air has to reach the mould.
Do not stack food against or on top of the ice maker.
A freezer about three-quarters full holds its temperature best.
Adding a lot of unfrozen food at once slows ice production for a day. That is normal.
Every door opening lets warm air in. A household that opens the freezer thirty times a day gets less ice than one that opens it ten times.
In-door ice makers on French door fridges are affected by fridge door openings as well as freezer ones.
Check the door seals with the paper test and make sure nothing stops the door closing.
Do not leave the door open while deciding what to take out.
If production is good overnight and poor through the day, door openings and room temperature are the explanation, not a fault.
The ice maker stops when it believes the bin is full. If that signal comes too soon, you get half a bin and no more.
Sensor typeWhat goes wrongFix
Wire armCubes heap up directly under the ice maker and lift the arm while the rest of the bin is emptyLevel the ice by hand now and then. Check the bin is the right way round and fully in
Wire armArm bent, or caught on the binStraighten gently or replace
Plastic paddleHeld up by a stray cube or frostClear
Optical beamFrost on the emitter or receiver windows, or a food bag in the beamWipe the windows. Keep the area clear
Weight or level sensor in the binBin not seatedReseat
AnyWrong bin, or a container placed in the binUse the original bin only
Ice makers do not spread the ice. On tall narrow bins, a peak forms under the drop point. Shaking the bin level once a day in heavy use lets it fill properly.
Vacuum the condenser coil, at the back or underneath, once or twice a year. Dust on it raises freezer temperature by several degrees.
Leave the clearances the installation instructions give at the back, sides and top.
Keep the fridge out of direct sun and away from the oven.
A fridge in a garage, an outdoor kitchen or an uncooled store room in summer will make far less ice, and may make none in the hottest months.
On built-in fridges, check the plinth grille is not blocked.
Warm supply water in summer, when the building's pipes and tank are hot, takes longer to freeze. Nothing can be done about that at the fridge.
When output has been falling steadily for weeks despite a new filter and a cold freezer, a part is on its way out.
FindingLikely fault
Cubes shrinking, icicle on the fill tubeInlet valve seeping and the tube partly frozen
Cubes shrinking with good pressure and a new filterInlet valve restricted
Cubes full size, some left stuck in the mould each cycleMould surface worn or scaled, or the heater weakening
Cycles skipped at randomIce maker's control or sensor failing, or a loose connector
Twist tray no longer releasing all its cubesTray hardened with age
Frost building round the ice makerAir leak into the compartment
Freezer slowly warmingDefrost, fan or sealed system fault
Two ice makers in one fridge, one slowFault local to that unit or its side of the valve
These are repairs. Describe the pattern and how long it has been developing when you book.
When the ice is made and then lost
Sometimes production is fine and the ice does not last.
ProblemCauseFix
Ice fused into lumpsSitting unused, or partial melting from a warm compartment or a leaking chute flapUse it or empty the bin regularly. Check seals and the flap
Cubes shrinking in the binSublimation in a frost-free freezer over weeksNormal. Use ice within a couple of weeks
Ice tastes staleOld ice absorbing freezer smellsEmpty the bin. Cover strong foods. Change the filter
Ice melting in an undercounter machine's binThe bin is insulated, not refrigeratedNormal. A blocked drain or a poor door seal makes it worse
Ice melting back in a countertop machineUninsulated basketNormal. Move ice to the freezer as it is made
Dispenser gives little, bin is fullA dispensing fault, not a production oneSee not dispensing If your measurement shows the ice maker is producing what it should and you still run short, these steps raise the supply without any repair.
1
Bank ice ahead of needEmpty the bin into freezer bags once or twice a day and store them in the freezer. The ice maker refills the bin, and you build a reserve. This greatly increases what is available for a party.
2
Use the boost function the day beforeFast-freeze or ice-plus.
3
Lower the freezer setting a degree or twoFor the summer.
4
Keep the filter freshSo every fill is a full one.
5
Level the ice in the binSo the sensor does not stop production early.
6
Open the freezer lessAnd make sure it seals.
7
Keep the freezer reasonably fullFrozen mass steadies the temperature.
8
Use both ice makersIf your fridge has a second one in the freezer, switch it on.
If you regularly needConsider
A little more on hot daysThe steps above
Several kilograms a dayAn undercounter ice machine, plumbed in
Ice for regular entertaining or a home barAn undercounter clear-ice machine
Ice for a cafe, office or shopA commercial machine sized to the demand
We install undercounter and commercial ice machines. Sizing guidance is on our commercial ice machine repair page.
Undercounter, countertop and commercial machines
MachineCommonest reasons for low outputFirst steps
CountertopHot room, warm water, basket left full, scale on the sensors and prongs, blocked ventsUse cold water, empty the basket often, descale, keep the vents clear, keep it out of the sun
UndercounterPlinth grille blocked, condenser dusty, scale on the plate, filter clogged, hot locationClear the grille, clean the condenser, run the clean cycle, change the filter
CommercialDirty condenser or air filter, hot kitchen, scale, starved of water, leaking valves, low refrigerant, machine too smallClean, descale, change filters, then time the freeze and harvest cycles
All air-cooled machines lose output as the room and the water get warmer, and the loss is large. A machine that keeps up in January and falls behind in August may have nothing wrong with it. Commercial diagnosis is covered in commercial ice machine not making ice, and small machines in portable and countertop ice makers.
Do not replace the ice maker to get more ice without measuring first. A new one of the same type makes the same amount.
Do not turn the freezer to its coldest setting permanently. It costs electricity and can freeze the fill tube.
Do not turn the fill adjustment up to compensate for a clogged filter.
Do not remove the filter and run without a bypass plug.
Do not chip clumped ice with a knife.
Do not block the freezer vents with bags of banked ice. Store them away from the back wall.
Output is half or less of the stated figure, with a new filter and the freezer at minus 18.
Cubes stay small with good supply pressure and a new filter.
The freezer will not reach minus 18.
Cubes stick in the mould, or cycles are skipped.
The ice maker frosts over.
A free-standing machine is still slow after cleaning, descaling and ventilation have been dealt with.
Our diagnostic visit is AED 100 plus VAT, with a fixed price before any work. Tell us your 24-hour measurement, the freezer temperature and what the cubes look like. See fridge ice maker repair.
Why is my ice maker not making enough ice?
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A clogged filter or low water pressure giving small cubes, a freezer warmer than minus 18, blocked airflow, frequent door opening, or a bin sensor stopping production early. Often the ice maker is healthy and demand is simply higher than its output.
How much ice should a fridge ice maker make in a day?
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Typically about 1 to 2 kg, or roughly 80 to 130 cubes. Check the figure in your manual.
How long does it take to fill the ice bin?
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About 24 hours from empty on most fridges.
Why is my ice maker so slow?
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The freezer is not cold enough, air is not reaching the mould, the door is being opened often, or the fridge is in a hot spot or has a dirty condenser.
Why are my ice cubes getting smaller?
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Less water is reaching the mould on each fill. Replace the filter and check the supply pressure.
How can I make my ice maker produce more ice?
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Set the freezer a degree or two colder, use the boost function, keep the filter fresh, level the ice in the bin and store finished ice in freezer bags.
Does a colder freezer make ice faster?
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Yes, within reason. Minus 20 to minus 22 freezes each batch sooner than minus 18.
Why does my ice bin only fill half way?
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The ice is piling under the sensor and tripping it early, the bin is not seated, or an optical sensor is frosted.
Does my ice maker make less ice in summer?
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Yes. Warmer supply water, a warmer kitchen and more door openings all reduce output.
Will a new ice maker make more ice?
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Only if the old one has a fault. A healthy unit of the same type makes the same amount.
What if I need much more ice than a fridge can make?
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An undercounter or commercial ice machine, plumbed in. We install them.
Who repairs slow ice makers in Dubai?
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One Click Dubai sends a technician the same day. Call or WhatsApp +971 55 209 9785.
Half the ice it should make?A technician can find the cause on site. The diagnostic is AED 100 plus VAT, and repairs carry a 1-month warranty.
