The short answer
What this symptom means on an Upstreman/Frestec refrigerator depends on how the refrigerator is built, and on this one the order runs like this. First — Aged rubber compressor mounts. Last, and the only one that is a technician's job from the outset — The start relay clicking in and out. Start at the top: those checks are free and need nothing opened.
What you actually observe
- A hum or buzz that comes and goes with the compressor — It starts when the unit starts and stops when it stops.
- A rattle that changes if you touch the cabinet — Something is resonating rather than failing.
- A scrape or tick that follows a fan — A regular, blade-speed sound rather than a steady hum.
- NEAR MISS: repeated clicking with no cooling at all — That is a start-relay fault, not a noise complaint, and it needs a different page.
Causes, most likely first on this build
- Aged rubber compressor mounts — The compressor sits on rubber feet that harden with age and heat. Once they are hard they stop isolating it and the sound of the compressor arrives in the room directly instead of being damped. Ranked first on an Upstreman/Frestec: the seal is the one part of a co-listed cabinet that is the same whichever build arrived, so it is the check that is always worth making.
- The cabinet is not standing level on its feet — A compressor shakes; that is its job. Second here, because the co-listed cabinets share a small condenser and a short duty cycle, so the environment they sit in does more of the work than the owner expects.
- Something against the condenser fan blade — The condenser fan runs in the dirtiest part of the unit. Third, once the two above are clean: it separates the builds from each other, which is exactly what this listing makes hard.
- The start relay clicking in and out — The relay that starts the compressor clicks once on each start. Last, and the reason the order above matters: a sealed-system fault is rare on these and needs equipment no owner has, so it is what remains after the list above is clean.
Check in this order, and why
- Watch the compressor itself while it runs — Visible movement at the body rather than a steady hum points at the mounts.
- Push gently at each top corner of the cabinet — Any movement at all means the feet are carrying the vibration instead of absorbing it.
- Unplug it and look at the condenser fan blade — Debris against a blade is obvious once you can see it and free to clear.
What an owner can safely check
- Read the rating plate inside the cabinet before assuming which build arrived — A co-listed cabinet reaches buyers under more than one badge, and the plate is the only part of it that describes what is actually there.
Tools: a torchAbout 10 min
- Push each top corner of the cabinet and adjust the feet until nothing rocks — Levelling is free and it removes the single most common cause of a new noise.
Tools: an adjustable spannerAbout 15 min
- STOP HERE if the noise is inside the sealed system or needs a panel off with power on — That is where an owner check ends and a service call begins.
Before you open anything
Safety
Unplug the appliance or switch off its breaker before removing any panel, because a capacitor can hold a charge after the power is off. Leave the door switch wired exactly as it is: it cuts power to the fan for a reason, and defeating it is never part of a diagnosis.
When to call a technician
Call when the noise survives a level check, a clear fan and an empty shelf, or as soon as it changes character: a rumble that rises with the compressor, or repeated clicking with no start, is a different thing from a rattle. Call immediately for a burning smell or visible oil at the compressor, and stop using the cabinet until someone has looked at it.
Where to go next in this class
What is deliberately not on this page
This page is written for the Upstreman/Frestec refrigerator as a class, not for one family or model line. Where a family- or model-specific page exists for your cabinet it is linked above, and it is the more specific answer.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
