The short answer
A cabinet that runs continuously and still warms up has lost airflow far more often than it has lost refrigerant. The compressor is working; something is stopping the cold it makes from reaching the food. Listen at the freezer with the door open and the light switch held in. Hearing the evaporator fan separates an airflow fault from a fan fault before anything is opened. On a Stirling refrigerator the cause that ranks first is defrost cycle stalled, evaporator iced over.
What you observe
- The freezer is cold but the refrigerator is not — Airflow between the two compartments has stopped.
- The compressor never stops running — The same fault seen from the other side: it never reaches its target.
- NEAR MISS — the cabinet is silent and nothing is cold — That is a power or start-relay fault and it is a different page.
Causes, most likely first on a Stirling refrigerator
- Defrost cycle stalled, evaporator iced over — The heater or its control stops clearing the coil, frost builds into a solid sheet behind the freezer panel, and air stops moving while the compressor runs on. It ranks first on a Stirling refrigerator because a full-size cabinet has enough margin to hide a fault for weeks, so by the time it shows, the cheap cause has usually been running a long time.
- Evaporator fan motor failed — The fan behind the freezer panel is what pushes cold into the fresh-food side, and when it stops the freezer stays cold while the refrigerator warms. Second on this platform: a cold freezer beside a warm refrigerator is this fault and almost nothing else.
- Condenser coil blanketed in dust — The coil rejects the heat the compressor removes, and once it is covered the machine runs continuously without ever getting the cabinet down. Ranked here because a shallow plinth or a tight cut-out fouls a coil far faster than an open back does.
- Damper or air diffuser stuck — On a single-evaporator cabinet a flap meters cold air into the fresh-food side, and a stuck flap starves that side while the freezer stays fine. Last, and the reason to work down the list rather than guess: it mimics a failed fan exactly, so the fan has to be heard before this is considered.
Check in this order, and why
- Empty the freezer and look at the rear panel for a sheet of frost — A solid sheet rather than a dusting settles it immediately.
- Open the freezer, hold the door switch in and listen for the fan — A cold freezer with a warm cabinet is the fan's signature.
- Feel the coil area at the back or in the plinth for heat and dust — A thick dust blanket is visible and it is the cheapest fix here.
What an owner can safely check
- Empty the cabinet, switch it off and leave both doors open for a full defrost — Cold restored afterwards confirms the defrost system as the cause.
Tools: towelsAbout 45 min
- Unplug the cabinet and vacuum the condenser coil and its grille thoroughly — Do this twice a year on a compact or built-in cabinet, more with pets.
Tools: vacuum, soft brushAbout 25 min
- STOP at the point where the next check means live terminals or a panel removed — Everything past that line is a technician's work, however likely the cause above it looks.
Before you open anything
Safety
Unplug the cabinet or switch off its breaker before removing any interior panel — a capacitor can hold a charge after the power is off. Never cut, open or attempt to recharge a sealed refrigerant line.
When to call a technician
Call once the defrost, the coil, the door and the fan are all clean and the cabinet still runs warm: what is left is the sealed system, and refrigerant work is licensed work. On a machine at this price point, weigh any quoted repair against a replacement before agreeing to it: parts and labour reach the value of the appliance quickly.
Nearest pages of this class
What this page does not cover
What this page covers is the refrigerator class as Stirling builds it, not an individual family or model line. If a page exists for your particular family or model, it is linked above and it is the better answer — go there first when your model is named. Left out on purpose: part numbers, connector colours, disassembly order and torque values, because every one of those varies by family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
