What this usually is on these models
Noise on the NCF line separates cleanly into sounds that follow the fan, sounds that follow the compressor and sounds that follow the cabinet. A noise that arrived with a move is about the new position, not about a new fault, and that split does most of the diagnosis. The order below puts resonance through the surface it stands on first and compressor mounts that have perished last, and that order is the point of the page.
What you observe
- Ticking in time with something turning — A hard, even tick with a fixed interval, which is the signature of a blade brushing something.
- The noise is far worse in one room than another — The same unit, the same load, a different surface and a different amount of background sound.
- Runs longer than it used to and is louder for it — The sound may be unchanged and simply present for more of the day.
- NEAR MISS - clicking every few minutes with no run — That is a start attempt failing rather than a mechanical noise, and it points at the supply or the start circuit.
Ranked causes for these models
- Resonance through the surface it stands on — Ranked first on this line: a cabinet on a hollow worktop, a thin shelf or a bare board couples its hum straight into that surface, which radiates it. The unit itself may be quiet; the furniture is what you can hear.
- The cabinet not standing squarely — Next, and close behind: stance is first because it is free to test and it explains the loudest complaints: the noise changes the moment the unit is shifted a hand-width.
- The cabinet touching a wall or furniture — Then: it also starves the condenser of air, so the unit runs longer and makes its noise for more of the day, which is why the complaint often arrives in warm weather.
- Compressor mounts that have perished — Last, and the reason the order matters: the compressor sits on rubber mounts, and when those harden the unit transmits everything it does into the case. The noise is a hard knock at start and stop rather than a hum.
What to check first, second, third
- Change what it stands on — Compare the noise with the unit on the floor against the noise on its usual stand.
- Press each corner in turn — Press down on each corner of the top. Any corner that moves is the one making the noise, and packing it out is the whole repair.
- Pull the unit clear of everything it touches — Check the rear and the sides for a lead, a hose or a bracket resting against the case.
Read this before you start
Safety
Switch off at the breaker or pull the plug before any panel is disturbed, because a capacitor can hold a charge after the power is off. Do not defeat a door switch to keep a fan running while you listen; there are safer ways to place a noise.
Models in the NCF family
Reference| Model number | Family key |
|---|---|
| NCF35 | alpicool:refrigerator:ncf |
| NCF45 | alpicool:refrigerator:ncf |
| NCF55 | alpicool:refrigerator:ncf |
When to call a technician
Call when the noise is continuous rather than rhythmic and does not change with load, position or clearance: that combination points at a bearing or a mount, and both are behind a panel.
Other faults covered for this line
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
