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An icemaker that has stopped is usually a water supply problem or a temperature problem, and the two look nothing alike once you know what to look at. Hollow or small cubes say one thing; an empty, dry mould says another entirely. On an FDV refrigerator the place to start is the water supply to the maker, because these are small single-evaporator cabinets with one thin magnetic gasket and no second air path, so anything that loads the door or the drain shows itself long before the sealed system does.
What you are looking at
- The mould is dry and nothing has been made at all — No partial cubes, no slush, just an empty tray.
- Cubes are hollow, small or half formed — Water is arriving but not enough of it, or not for long enough per fill.
- Cubes are made but stay stuck in the mould — The maker is filling and freezing but not harvesting, which is a mechanism fault rather than a supply one.
- NEAR MISS: the freezer itself is not properly cold — Then the icemaker is a symptom and not the fault.
What it usually is, in order of likelihood
- No water reaching the maker — A closed saddle valve, a kinked supply line behind the cabinet, a filter that has never been changed or a line frozen where it passes through the cabinet wall all end the same way: an empty mould and a maker cycling on nothing Ranked first on an FDV refrigerator: this is lightly specified equipment where the moving parts are the cheapest things in it, so a wear item reaches the end of its life well before the sealed or sensed systems do.
- A frozen or misdirected fill tube — The small tube that squirts water into the mould freezes shut if the fill valve weeps, or misses the mould entirely if the cabinet is not level. Where it sits here: worth checking early on any cabinet that has been moved recently or that is not standing square.
- The maker is switched off or the arm is held up — Every icemaker has a bail arm or a switch that stops production when the bin is full. Where it sits here: trivial, free and genuinely common, so it always belongs near the top of the list.
- A failed fill valve, mould heater or harvest motor — The valve is an electrical part that sticks, the mould heater releases the cubes and the motor sweeps them out. Where it sits here: least common of the set and the only one needing the maker out and a meter on it, so it sits last.
The order to work in
- Start at the water supply to the maker — It is the cause that ranks first on this kind of machine, so it is the check that ends the diagnosis most often and the one that costs least to make.
- Look in the mould and say whether it is wet or dry — Dry means the supply side; wet, frozen and stuck means the harvest side.
- Check the bail arm and the maker switch — Free, instant, and it resolves a surprising share of dead icemakers before any panel comes off.
Owner-side checks, step by step
- Straighten the supply line and open the valve fully — Pull the cabinet out far enough to see the line, remove any tight bend and confirm the shut-off valve is fully open rather than cracked.
Tools: flashlightAbout 25 min
- Change the water filter and flush the line — Run several quarts through the dispenser afterwards to clear air.
Tools: replacement filterAbout 20 min
- STOP HERE if the mould fills but never releases — Mould heaters and harvest motors are tested with a meter on a live or dismantled maker.
Safety first
Safety
Unplug the appliance or switch off its breaker before removing any panel; a capacitor can hold a charge after the power is off. Do not thaw a frozen fill tube with an open flame or a heat gun on high, because the surrounding plastic melts long before the ice moves. Shut the water supply off before disconnecting any line, and be ready for the water the line still holds.
When this becomes a service call
Call once the supply side is proven good and the mould still fills without harvesting, or when ice is building behind the maker rather than in it. Call sooner if the ice complaint sits alongside a freezer that is not holding temperature, because then the icemaker is the messenger and the cooling fault is the message.
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The limits of this page
This page covers FDV refrigerators as a class, not one family or model line. Deliberately not here: maker assembly part numbers, fill-valve flow ratings and the mould thermostat tables, all of which differ by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
