Frigidaire refrigerator not cooling: defrost, airflow or sealed system
A fridge that is not holding temperature can have a cheap fault or an expensive one, and the difference is usually apparent within a few minutes of looking. The questions are whether cold is being made at all, and whether it is reaching the fresh food compartment.
Is the freezer still cold?
This single question splits the diagnosis. A cold freezer with a warm fridge means cold is being produced but not delivered — an airflow or defrost problem, and generally the less expensive outcome. A freezer that is also warm means cold is not being made, which moves the suspicion to the compressor or sealed system.
Frost build-up on the evaporator
Behind the rear freezer panel sits the evaporator coil. Light even frost is normal; a solid sheet of ice is a defrost system failure. The heater, the defrost thermostat and the control that times them are each tested. Until it is fixed, the ice regrows and blocks airflow again within days of any manual defrost.
The condenser coils and the fan
Coils packed with dust and pet hair cannot reject heat, so the compressor runs longer and cools less. This is ordinary maintenance rather than a fault, and in homes with pets it makes a measurable difference. The condenser fan is checked at the same time — if it has stopped, the symptoms are similar.
The compressor runs constantly but nothing gets cold
This is the expensive branch. It suggests a refrigerant leak or a compressor that is running without pumping. Both require sealed-system work and specific certification, and at that point the age and value of the appliance genuinely matter to the repair-or-replace decision.
Door seals and how the fridge is loaded
Before any of the above, seals are worth checking. A gasket that no longer seals lets warm humid air in continuously, which shows up as a fridge that never quite reaches temperature and an evaporator that frosts faster than it should. Overpacking the fresh food section blocking the rear vents produces a similar picture.
Frequently asked questions
How long should a fridge take to recover after the door is left open?
Several hours to return to a stable temperature, longer if it is well stocked. Judging a repair by the reading twenty minutes later is misleading.
Is it worth repairing a sealed system fault?
It depends heavily on the age of the unit. It is the most expensive repair on a refrigerator, and on an older appliance the honest answer is often that replacement makes more sense.