The answer first
When ice production drops off, look at the fill side and the freezer temperature before the module is condemned. Two of the tests take a minute each and between them they explain most failures of this kind. On this kind of cabinet the platform is shared across a large maker range, so the service part you need is usually still catalogued.
What the owner sees
- The ice tastes stale or smells of the freezer — Production is slow enough that cubes sit and sublimate, which is a rate problem, not a flavour problem.
- The bin is empty and stays empty — No cubes at all over a full day, with the freezer otherwise holding temperature.
- Cubes are fused into one lump in the bin — Usually the bin has been left long enough between uses for the surface to melt and reknit.
- NEAR MISS — water dispenses but ice never forms — A supply that works at the dispenser and not at the mould narrows this to the ice-maker fill branch specifically.
Causes, most likely first
- Fill tube frozen solid at the mould end — Ranked first: Once a plug forms it grows with every cycle, so the failure appears sudden even though it built up for weeks. It sits at the top here because the platform is shared across a large maker range, so the service part you need is usually still catalogued.
- Water inlet valve failing to open fully — Second: Sediment in the valve screen restricts the fill long before the valve fails outright, which is why cube size falls before production stops.
- Bin arm or optical sensor reading "full" — Third: This costs nothing to check and accounts for a unexpected share of the calls that end with no part fitted.
Working through it
- Look for a plug of ice in the fill tube above the mould — A torch and a warm cloth will show and clear it; a plug found here accounts for the whole failure.
- Compare the display reading with a thermometer — A control acting on a wrong reading behaves perfectly while producing a fault, and only a thermometer exposes it.
- Fill a glass at the dispenser if the refrigerator has one — A strong steady flow at the dispenser and no ice at the mould narrows the fault to the ice-maker branch of the water path.
Safe checks, step by step
- Hand-fill the mould to test the freeze and harvest cycle — A measured cup of water, then leave it alone for some hours and come back to see whether cubes have dropped.
Tools: cupAbout 10 min
- Empty the bin completely and start it fresh — Old ice hides current production. An empty bin turns "no ice" into a measurable rate you can judge the next day.
About 5 min
- Clear a frozen fill tube with a warm damp cloth — Wrap the tube, wait, repeat. Do not use a metal tool or boiling water; both damage the plastic and make the next plug worse.
Tools: warm cloth, towelAbout 20 min
- STOP at the point where a panel would have to come off — Everything beyond that point is diagnosed on an unplugged appliance with test equipment.
Before you open anything
Safety
Before a screwdriver touches a cover, unplug the unit or switch off its breaker — a charged capacitor does not care that the display is dark. Sealed-system work — the compressor, the condenser and the lines between them — belongs to a licensed technician with recovery gear. Nothing in the sealed circuit is an homeowner job: it is pressurised, and the law treats venting it as a violation in its own right.
When to call a technician
Call once the mould freezes hand-poured water but the valve still will not fill it: that is a valve or harness diagnosis, and it is made with a meter on an unplugged appliance. If two homeowner-side fixes have each worked briefly, stop repeating them: something upstream is driving the fault and it needs finding.
Nearest pages of this class
Scope of this page
Treat this as the general case. This one names the pattern across Comfee refrigerators and stops there — it does not identify your control board, your gasket profile or your service part, and it does not reproduce a factory procedure. The family- and model-specific pages linked here do, and where one covers your unit it is the better starting point. It says nothing about accessory kits or aftermarket conversions, which change the behaviour described above.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
