What this usually means
The FRZ line mounts its compressor on a moulded cradle, so on the models listed in the table on this page very little reaches the cabinet shell. A sound you can hear across the room from one of these is a fan, a panel or the floor.
What the owner actually sees
- A rattle that changes when you touch the cabinet — If a hand changes the sound, the sound is a panel.
- A buzz when the cabinet is first closed — Short buzzes after closing are usually the load. What separates the FRZ line here is the order, not the parts.
- A whistle at the air outlet — A tonal hiss is airflow rather than machinery.
- A rhythmic tick or scrape from inside the cabinet — Ice contacting the fan blade on each rotation. It gets worse over weeks.
- A hum that never stops — A compressor that no longer cycles off. Check whether the cabinet is holding temperature before treating it as a noise fault.
- NEAR MISS — a new cabinet running in — A freezer pulling down from room temperature runs continuously for a day and sounds unfamiliar.
- NEAR MISS — the cabinet is warming as well as making noise — Then the temperature is the fault to chase and the noise is a symptom. Start with the cooling page.
What is most likely, and why
- Perished compressor mounting grommets — The one to check first. Age hardens the mounts; the compressor itself is fine. It is worth knowing that the models listed in the table on this page share this layout.
- A failing compressor — Next most likely. Last and rare. A hard metallic knock on start followed by a warming cabinet is the pattern, and it is not owner work.
- Loose panels, trim or a displaced drip tray — Third in the order. The cheapest cause and a common one after a move. On the models listed in the table on this page this is the check that decides the job.
- Contents rattling inside the cabinet — Further down. Bottles and containers touching the liner or each other buzz at particular compressor speeds.
- An unlevel cabinet or an uneven floor — Rarer again. Compressor torque has to go somewhere; on an unlevel cabinet it goes into the floor.
What to check first, second, third
- Damp each panel with a flat hand — A sound that changes under your palm is a panel, not a part.
- Stand behind the cabinet during a cycle — Rear noise is the condenser fan or the compressor; interior noise is not. It is one of the few places the models listed in the table on this page genuinely diverge.
- Rearrange the contents and re-listen — Bottles touching the liner produce buzzes that are indistinguishable from a machine fault until the load is moved.
- Clean the condenser coil and listen again — A choked coil makes the rear fan work harder and louder; cleaning sometimes removes the noise entirely.
What to do before any panel comes off
Safety
Isolate before opening. Unplug the appliance or switch off its breaker before removing any panel, and clear ice with warm cloths only — the evaporator tubing is directly behind the liner and a blade reaches it easily.
Models in the FRZ family
Reference| Model number | Family key |
|---|---|
| FRZ603UBNPTC-AU | bertazzoni:freezer:frz |
The line between a fix and a call
The owner line is the interior rear panel. Levelling, trim, the tray, the coil and a manual defrost are yours; anything behind that panel is not.
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.
