The short answer
Every model in the ATMM roster shares one capacity core and differs only in finish or trim, so the cabinet behind them is the same machine throughout, and its entries differ only in the trailing finish position. An ice maker in this roster that has stopped producing has usually lost its water or its temperature, not its motor. The mechanism only runs when the compartment is cold enough and the fill actually arrives, so those two are what the diagnosis is about.
What you observe on these models
- Production that stopped after the cabinet was moved — The supply line or the fill tube has shifted. Timing that specific points away from the mechanism entirely.
- No ice at all and a dry mould — Nothing is arriving. The diagnosis is the water route: the shut-off arm, the supply, the valve or a frozen fill tube.
- A mould with water in it that never freezes — Water is arriving and the compartment is not cold enough to complete a cycle. That makes it a temperature fault wearing an ice-maker costume.
- Hollow, small or misshapen cubes — A partial fill. Low supply pressure, a restricted filter or a valve that is not opening fully all produce the same shrunken cube.
Causes, most likely first on the ATMM line
- Shut-off arm raised or bin sensor blocked — Ranked first on this roster: the mechanism stops when it is told the bin is full, and an arm knocked up while reaching past it, or a stored bag sitting in the sensor path, tells it exactly that.
- Supply line, shut-off valve or house pressure — It ranks second here because a dry mould points straight at it and because the commonest version, a line pinched when the cabinet was pushed back, costs nothing to fix.
- The compartment is not cold enough to complete a cycle — Ranked third on this roster: it also means the real fault is a cooling fault, and fixing the ice maker would achieve nothing.
- Ice maker module or mould heater failed — Ranked last on this roster: the module drives the harvest and the mould heater releases the ice, so a failure there produces frozen cubes that never leave the mould.
- Body: Where this ranking departs from the brand-generic order is supply line, which moves up on the ATMM line because this roster is two or three closely related cabinets, so the order follows how those particular machines are built rather than an average across the brand.
Check in this order, and why
- Look at the arm or sensor path before anything else — Lower a raised arm, clear anything sitting in front of a sensor, and give it a few hours.
- Trace the line from the shut-off to the cabinet — Look for a kink, a closed valve and a line that has been trapped behind the cabinet. Pull the cabinet out to check properly.
- Look into the mould for standing water — Water present and not frozen means the temperature is the problem. Work the cooling fault instead.
- Have the module tested rather than replaced on suspicion — Cubes fully formed and never released point here, but every cause above it is cheaper and should be cleared first.
Before you open anything
Safety
Switch off at the breaker before any panel comes off and before putting a hand into the ice maker housing, because the harvest mechanism moves under power and does not warn you. Close the household shut-off before touching a supply fitting; a line under pressure behind a heavy cabinet is difficult to stop once it starts. Use warm water on an ice plug, never a tool, and keep water away from the supply cord throughout.
Models in the ATMM family
Reference| Model number | Family key |
|---|---|
| ATMM071ADB | arctic-king:refrigerator:atmm |
| ATMM071ADS | arctic-king:refrigerator:atmm |
| ATMM071ADW | arctic-king:refrigerator:atmm |
When to call a technician
Call when cubes form fully and never release, because that pattern points at the harvest side and nothing an owner can reach will change it. Call immediately if you find water anywhere around the supply fitting, and close the household shut-off before you do: a leaking supply behind a heavy cabinet does far more damage than a week without ice.
Nearest pages of this class
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
