What this usually is
A Cowsar refrigerator that runs but does not cool is most often an airflow problem rather than a dead compressor: the evaporator ices over because defrost has stalled, air stops moving between the compartments, and the food warms while the machine works harder than ever. Two of the three usual causes are owner-checkable in minutes. The ranking is the part worth reading twice.
What you are seeing and hearing
- The fresh-food side is warm while the freezer is still hard — A split like this is the signature of a delivery fault, and it narrows the list immediately. That single observation eliminates more of the list than any amount of guessing.
- A sheet of frost on the back wall of the freezer — Frost that has gone from a light dusting to a solid sheet is a defrost system that is no longer keeping up. 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. If the answer is clear, stop here and act on it.
Causes, ranked for this appliance
- A stalled defrost cycle icing the evaporator — Ranked first because it is common, gradual and completely hidden until somebody takes the rear freezer panel off, which is why owners describe it as sudden. Eliminate it properly before moving down; a half-checked cause comes back later.
- Blocked air vents inside the compartments — A shopping delivery packed against the rear vents stops the air path as effectively as a failed fan, and it is undone by moving three items. Ask whoever else uses the machine whether they have noticed the same thing.
- A door or seal leaking room air continuously — It ranks here because it is easy to confirm with a sheet of paper and because it makes every other fault worse. Treat the ordering as a route through the possibilities rather than as a prediction.
- A failed condenser fan or its motor — Below the others because it is less common, but it produces the same loss of capacity as a dirty coil with none of the visible dust to explain it. It is worth confirming twice before you act on it, since one observation can mislead.
Where to start, and why there
- Look at the frost pattern on the freezer rear wall — A light film is normal; a solid sheet is a defrost fault. Note the result even if it is negative, because a ruled-out cause is progress.
- Compare the two compartments honestly — Freezer hard and fridge warm means airflow.
- Run a sheet of paper around the door seals — A leak found here explains a warm cabinet on its own and costs nothing to confirm.
What to try before calling anyone
- Vacuum the condenser coil and the area around it — Power off, plinth or rear panel off, soft brush and vacuum. This is safe owner work as long as the power is genuinely off.
Tools: vacuum, soft brushAbout 30 min
- Check the seals and clean the gasket line — Warm soapy water into every fold, then a paper test around the perimeter to confirm the door is actually gripping. The value is in eliminating, not confirming; most of these come back negative and that is useful.
Tools: cloth, mild detergentAbout 20 min
- Put a thermometer in each compartment and record it over a day — Readings from a thermometer are what tell you whether a change you made worked, and they are what a technician wants to hear. Keep the parts you remove in the order you removed them.
Tools: thermometerAbout 20 min
- This is where the owner checks end — Past this point the checks need test gear and the training to use it safely.
Safety, first
Safety
Pull the plug before anything else; a wall switch is not proof the appliance is dead. A capacitor can hold a charge after the power is off, so the wait matters as much as the switch. Water and electricity meet at the defrost drain on this class of appliance, so dry the floor before you kneel on it. Do not alter anything that stops the machine running with a door open.
When to stop and call
The line is simple enough to state: you own everything you can reach without a panel coming off inside the compartment; the rest needs gauges and a licence. It is drawn where the next step stops being reversible. 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.
Nearest pages of this class
Scope of this page
Read this as the general answer for a Cowsar refrigerator, generalized across families on purpose.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
