Straight to it
On this class of refrigerator the ranking for warm-but-running is defrost first, evaporator fan second, sealed system last. That order matters because the first two are cheap and common and the third is neither, and a reader who starts at the compressor will spend money before they have any evidence. Nothing below asks you to open anything that should stay closed.
The observables
- The compressor runs continuously and never satisfies — A machine that cannot reach its target runs forever trying, which is both a symptom and a source of further damage. This is the cheapest information available on the machine.
- The condenser area underneath is packed with dust — Dust on the coil is the cheapest cause of poor cooling and the one most often overlooked.
- Ice cream soft but the milk still cold — A freezer losing ground before the fridge side points at the evaporator or the defrost system rather than at a door or a vent. It needs nothing you do not already own.
- NEAR MISS: nothing runs at all and nothing is cold — Silence changes the diagnosis: a dead machine and a struggling one need different pages. Note whether it happens every time or only sometimes, because that distinction narrows the list.
Causes, most likely first
- A dust-blanketed condenser coil — Worth doing early because it is free, it helps in every case, and it is the commonest reason a cabinet that used to cope has stopped coping.
- A failed or blocked evaporator fan — Second because it is the one moving part in the cold air path: bearings wear, frost jams the blade, and the moment air stops moving the fresh-food side warms while the freezer stays passable. Mention it when you book a visit; it changes which parts a technician brings.
- A door or seal leaking room air continuously — A continuous leak is a continuous heat load, and a cabinet that is otherwise healthy simply cannot win against it. That single observation eliminates more of the list than any amount of guessing.
- A sealed-system or compressor fault — It is at the bottom because it is the least likely and the most expensive, which is precisely the combination that makes a ranking valuable.
How to narrow it down
- Hold the freezer door closed and listen for airflow — Silence inside the freezer while the compressor runs points straight at the evaporator fan or the ice around it.
- Feel the condenser area for heat and look for dust — A coil that is warm and clean is doing its job; a coil buried in fluff is the first thing to correct.
- Check every internal vent for packed food — Move anything leaning against the rear wall or the vent grilles and give it a day before judging the result.
What to try before calling anyone
- Empty the freezer and let the cabinet defrost fully with the door open — A day with the power off clears the evaporator.
Tools: towels, cooler boxAbout 30 min
- Clear the internal vents and repack the compartments — Leave a hand’s width in front of the rear vents, and stop packing items against the back wall where the air comes out. Keep the parts you remove in the order you removed them.
About 15 min
- Move the cabinet clear of walls and cupboards. Get a second person before you pull the cabinet out or tilt it. — Air has to reach the condenser and leave again. A machine wedged into joinery is fighting for capacity before anything has failed.
About 20 min
- Stop at this point: what follows needs a meter on a live circuit — That is the boundary between a homeowner check and a service call, and it is not a soft one.
Before you open anything
Safety
Power down at the breaker first, and treat the cabinet as live until you have. Stored charge does not drain the instant the supply stops. Never put a heat source close to plastic parts or the gasket while you are thawing ice. Leave the door switch wired exactly as you found it; it is a guard and not an inconvenience.
The handover point
Put the boundary here: cleaning and defrosting are owner work, and anything requiring a gauge on the sealed side is not, because that is licensed work with licensed tools. The split is worth respecting even when the part looks simple. Do not sit on it if the cabinet is running continuously and never satisfying: a compressor made to work like that turns a cheap fault into an expensive one.
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How specific this page is
Scope note: this page addresses the refrigerator as a class of machine under the Cordova badge.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
