The short answer
The useful thing to know about an Upstreman/Frestec refrigerator with this symptom is which cause to try first. Here that is A door gasket that no longer seals, and the one to try last is A sealed-system or compressor fault. Everything near the top of the list is an owner check that costs nothing; the bottom of it is a service call.
What you actually observe
- The cabinet is warm but the unit is clearly running — You can hear the compressor; the air inside is not cold.
- It never switches off — It runs without ever satisfying its thermostat, which is the same fault seen from the other side.
- One part of the cabinet is cold and another is not — That is an airflow pattern rather than a cooling failure.
- NEAR MISS: the unit is silent and nothing is cold at all — That is a no-power or start-relay fault and it belongs on a different page.
Causes, most likely first on this build
- A door gasket that no longer seals — A gasket that has taken a set, torn at a corner or gone hard lets warm room air in continuously. 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 room is outside the cabinet's rated band — Every cabinet is rated for a band of room temperatures, and outside that band it cannot reach its set point whatever is right or wrong inside it. 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.
- A cabinet packed past its vents — Cold air has to circulate for a cabinet to hold temperature. Third, once the two above are clean: it separates the builds from each other, which is exactly what this listing makes hard.
- A sealed-system or compressor fault — A refrigerant leak or a failed compressor leaves nothing to carry the heat away. 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
- Close the door on a sheet of paper and pull it out — Anywhere it slides out freely is somewhere the gasket is not sealing.
- Find out how warm the room actually gets, not how warm it feels — A room that swings outside the rated band explains the whole complaint without anything being broken.
- Look at the vents inside, then at what is standing in front of them — A blocked vent is the one cause you can clear in the time it takes to find it.
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
- Empty the cabinet, switch it off and leave the door open until every trace of frost is gone — No tools.
About 45 min
- STOP HERE if the next step needs a meter on live terminals or any work on the sealed system — 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 once the clearance, the coil, the gasket and the load inside are all clean and the cabinet still will not hold its band, or the moment the fault is on the sealed system: refrigerant work is licensed and the tools for it are not owner tools. Call immediately if you smell burning, or see oil around the compressor, because oil outside the tubing means the system is open and every hour it runs after that costs more to put right.
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.
