The short answer
The useful thing to know about an Upstreman/Frestec/Nooody refrigerator with this symptom is which cause to try first. Here that is You may not have the build the listing showed, 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
- You may not have the build the listing showed — This badge covers more than one cabinet, and the builds differ in whether they defrost themselves, where the condenser sits and what the controls actually do. Ranked first on an Upstreman/Frestec/Nooody: a three-way co-listing means the badge on the door does not reliably tell you what is inside, and every later step depends on knowing which build you have.
- Frost built up on the cooling plate — On a manual-defrost cabinet the cooling plate frosts over in ordinary use, and once the frost is thick it insulates the plate from the air it is meant to be chilling. Second here, because whatever the badge says, all of these builds share a small manual-defrost cabinet, so the fault the cabinet type produces comes next.
- A thermostat or sensor reading the wrong temperature — The control only knows what its sensor tells it. Third, once the two above are clean: it is the check that does not care which build arrived, so it is worth doing before anything comes apart.
- 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: it is the rarest cause and the only one that needs a licensed technician, so it is what is left once the list above is clean.
Check in this order, and why
- Read the rating plate inside the cabinet rather than the badge on the door — It is the only thing on the unit that describes the unit you actually own.
- Look at the cooling plate or the freezer compartment for frost — A thick sheet rather than a light dusting names the cause before any tool comes out.
- Compare what the cabinet reports with a separate thermometer left inside it — A disagreement points at the sensing rather than at the cooling.
What an owner can safely check
- Read the rating plate inside the cabinet and confirm which build you actually have — The badge on the door is a listing, not a manufacturer.
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/Nooody 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.
