The short answer
On the Alpha Par RD RDTM refrigerator a new noise is more often about how the cabinet is standing and what is touching it than about anything inside the sealed system. The model record for this family is a single code, RDTM116WE, so everything below applies to one build rather than to a range of them.
What you observe
- A buzz or rattle you can stop with a hand — Touch a panel or a tray and the noise changes or disappears.
- A whine or whirr that rises and falls — Tied to a fan rather than to the compressor, and it often lingers a few seconds after the compressor stops.
- A drone or hum that carries through the room — Steady, present only while the compressor runs, and usually worse at night because the room is quieter.
- NEAR MISS — the noise arrived with water on the floor — Read the water-leak page for this family first; a drip tray that has shifted makes both symptoms at once.
Causes, most likely first on this family
- The fan, and whatever has found its way into it — First. Where there is a fan there is a bearing that dries out and a blade that can catch. A dry bearing gives a cyclic whine that rises with the fan, and a catching blade gives a tick at a steady rate — both of them stop dead when the fan stops. The record holds only RDTM116WE, so this check is the whole of the family's exposure to that cause.
- Something touching that should not be — Second. Almost every rattle on this appliance class is two things touching that were never meant to: a tube against a panel, a tray against a rib, a bottle against a shelf edge. Each one is found with a hand and fixed without a tool.
- A compressor that is trying to start and not managing it — Last. A regular clack every few minutes with nothing else happening is the sound of a compressor being offered a start and dropped again. It is filed as a noise complaint and it is not one: the cabinet is failing to cool, and the noise is only how it says so.
- Body: With one code recorded there is no older or newer build here to tell apart. The record does not say what the numbers in the codes stand for, which is why this page reasons from what the cabinet does rather than from a specification. Where the record cannot tell you which codes carry a fan and which do not, the fan is settled first by ear: it either outlives the compressor by a few seconds or it does not, and that single observation splits the list in half.
First, second, third
- Work out whether the noise outlives the compressor — Wait for the cycle to end. A sound that keeps going for a few seconds after the compressor stops belongs to a fan, and that single observation halves the list. On RDTM116WE that is the whole of this step.
- Press on panels and move the contents while it runs — A noise you can stop by putting a finger on a panel is a contact noise. Note where it goes quiet before you start unscrewing things.
- Body: The record holds one code for this family, so the order below is not a model matrix — it is the order in which these causes can be eliminated on the machine in front of you, cheapest and least invasive first.
Before you open anything
Safety
Unplug the cabinet or switch off its breaker before removing any panel, because a capacitor can hold a charge after the power is off. Nothing in the order above needs the machine open. Never wedge a tool between tubing and cabinet to stop a buzz: the tubing is thin, it is under pressure, and a puncture ends the machine.
Models this page covers — The one model code recorded for this family.
Reference| Model number | Family key |
|---|---|
| RDTM116WE | alpha-par-rd:refrigerator:rdtm |
The line between a fix and a service call
Call when the noise survives every check above — the cabinet moved, level, nothing touching, contents settled — and especially when it is a grinding or a screech rather than a hum, because those are bearings rather than couplings. Call immediately if the noise comes with a cabinet that is losing temperature, or with a burning smell: at that point it has stopped being a noise complaint.
The rest of 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.
