The short answer for these models
Most noises from the ATMM family come from three moving parts and one stationary one: two fans, a compressor, and the cabinet itself resonating against whatever it stands on. The table on this page covers a small group of model numbers in the same line. Identifying which of those is speaking is a matter of where the sound is and when it happens, not of taking anything apart.
What you observe
- A vibration you feel through the floor — The cabinet is transmitting normal compressor vibration into the structure, usually because a foot is not carrying its share.
- A single loud bang or knock at long intervals — Thermal movement of the liner or a duct, usually around a defrost cycle. It sounds alarming and is not.
- The noise only happens at night — Almost always a room that has gone quiet rather than a machine that has changed. Worth establishing before anything is opened.
- A rhythmic ticking or clicking from inside the freezer section — Usually a fan blade touching ice that has built up around it. It comes and goes as the ice grows and gets shaved back.
- NEAR MISS — the noise arrived with a warm cabinet — Then the noise is a clue in a cooling failure, and the cooling page for this family is the right place to start.
Ranked causes for these models
- Evaporator fan fouling ice — First on the ATMM family. Ice builds where the air is coldest and the fan is right there, so the blade starts to catch it at the tips. The noise is rhythmic, it changes with the door open, and it stops entirely after a defrost — which is how it identifies itself.
- Condenser fan obstruction — Second, and it is the one that is easy to confirm: with the power off, the blade can be turned by hand and anything fouling it is visible with a torch.
- Fan motor bearings — Third. A bearing produces a squeal or a grind that follows the fan and gets worse in a predictable way. It is a genuine part failure, which is why it sits below the two causes that are free to fix.
- The compressor and how it is mounted — Fourth. It explains a machine that has grown louder without any change in how it cools.
- Cabinet contact and levelling — Last, but check it early because it takes a minute: lean on each corner in turn and listen for the noise to change.
Check in this order, and why
- Decide first whether the noise is a fault at all — Gurgling, trickling and cracking are normal. Establishing that saves the rest of the diagnosis.
- Check what is touching the cabinet — Walls, units, pipes, and anything stored on top. Free, fast, and the commonest real cause on cabinets of this size.
- Check the cabinet is level and every foot carries weight — A rocking cabinet turns the compressor into a loudspeaker.
- Listen at the freezer section with the door held open — Now worth doing: if the noise survives with the internal fan stopped, it is not the internal fan.
- Inspect the condenser fan with the power off — The last owner-side step, and the one that needs the machine moved.
Before you open anything
Safety
Power off at the plug or the breaker before the back of the cabinet is touched. Do not hold the door switch to watch the internal fan run with a hand inside the compartment. Moving the cabinet to reach the back is a two-person job on the larger models in this family. A noise complaint on its own does not put food at risk, but check the temperature while you are there: a refrigerator holds food safely at 40 °F (4 °C) or below and a freezer at 0 °F (−18 °C) or below.
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 |
The line between an owner fix and a service call
Call once the cabinet has been levelled, cleared and defrosted and the noise is still there. Bring three answers with you: where the noise is, whether it keeps time with a fan or the compressor, and whether the cabinet is still cooling normally. On the ATMM family those three usually decide the repair before a technician arrives.
Other problems covered for this family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
