The short answer
The usual answer on this unit is the cabinet out of level or touching something, with contents or wire baskets shifting and rattling next. A freezer makes several noises that are simply the appliance working, and the list below separates them out. Locating the sound does most of the job before anyone is called.
What you are looking at
- A gurgle or hiss shortly after the unit stops — Refrigerant settling in the tubing, which is normal on every unit.
- A scrape or tick from inside an upright unit — A fan blade meeting frost that was not there last week.
- NEAR MISS: a single loud crack now and then — Plastic and steel moving as the cabinet cycles. Normal, and it needs nothing.
Causes, most likely first on this unit
- The cabinet out of level or touching something — A freezer standing on three of its four feet, or with a corner against a wall or a shelf, passes every compressor vibration into the building. It sounds like a fault and is not one. First, and the whole order below follows from it: a freezer is put where it fits rather than where it is installed, usually on an uneven garage or utility-room floor.
- Contents or wire baskets shifting and rattling — Packets settling against the cabinet wall and baskets not seated in their runners buzz in time with the compressor. Second: a freezer is packed to the top and nobody repacks it, so the rattle starts on the day something was put in at an angle.
- A loose drain pan, grille or panel vibrating — The pan under the compressor sits loose by design and the lower grille clips on. Third on the list, and worth the look because these are the parts that are deliberately not fixed down, so they are the ones most often left out of position.
- A failing compressor knocking under load — Worn internal mounts knock on start-up and rumble as the unit runs. Last, and that is the point of this order: it is the least likely cause and the costliest, which is exactly why everything cheap above it is ruled out first.
What to check first, second, third
- Press down on each corner in turn and listen for the sound to change — A noise that answers to hand pressure is a mounting noise.
- Open the unit and press the baskets and packets down firmly, then listen — If the noise stops, it was never the appliance.
- Unplug the unit and press the pan and the grille by hand while the noise is present — A buzz that stops under hand pressure is found.
The checks you can make yourself
- Check the unit sits firm on all four feet and clear of every wall and shelf — Adjust the feet until it does not rock at any corner.
Tools: a spirit level, a spannerAbout 20 min
- Reseat the baskets in their runners and repack so nothing presses against the walls — Work quickly and close the lid: the contents come first.
About 15 min
- STOP HERE if the fault is on the sealed system — Refrigerant is licensed work and the tools for it are not owner tools.
Read this before you touch it
Safety
Unplug the freezer or switch off its breaker before removing a grille or reaching behind the cabinet. A capacitor can hold a charge after the power is off. Never put a hand near a fan blade while the unit is plugged in, and do not run it with the grille off to listen: that is when fingers meet the fan. A full freezer is heavy, so do not try to move it loaded.
The line between a fix and a service call
Call once levelling, contents, the pan and the fans are all ruled out and the noise remains, because what is left is the start circuit or the sealed system. Call sooner if the compressor clicks and gives up, if the noise arrives with soft food, or if the unit trips a breaker.
Related pages for this unit
What is deliberately not on this page
This page covers the Whynter freezer as a class, not one family or model line. Where a family- or model-specific page exists it is linked here. Deliberately not here: fan and relay part numbers, compressor mount specifications and any panel removal sequence, all of which differ by family and belong on the page for that family.
Links: - [Whynter freezer leaking onto the floor: where it comes from](/blog/whynter-freezer-water-leak) - [Why a Whynter dishwasher is leaking water](/blog/whynter-dishwasher-water-leak) - [A Vitara freezer that buzzes, rattles or clicks](/blog/vitara-freezer-abnormal-noise)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
