The short answer
On these cabinets a fridge that runs but will not cool is far more often a defrost or airflow problem than a dead compressor. Frost builds on the evaporator, the fan can no longer push cold air forward, and the fresh-food side warms while the machine hums along normally. Two of the three likely causes are checkable without tools; the third is a sealed-system call.
What you are actually seeing
- Fresh food is warm while the freezer still holds ice — The classic split on a single-evaporator cabinet, and the one that points at air, not refrigerant.
- The compressor runs and never cycles off — The cabinet is trying to reach a setpoint it cannot reach, so the run time stretches out.
- A solid sheet of frost on the freezer rear panel — Not the light dusting a freezer normally carries, but a slab that has grown over weeks.
- Air from the fresh-food vents feels weak or absent — Put a hand at the upper vents with the door open and the fan forced on by the door switch being held.
- Not this fault: the cabinet is silent and nothing runs — No hum, no fan, no light change means a power or start-circuit problem and belongs on the will-not-start page.
Ranked for this cabinet
- Defrost cycle stalled, evaporator iced over — First by a wide margin here. Adaptive defrost hides a weak heater or a drifting sensor for weeks, and the ice slab it leaves is what actually stops the air.
- Evaporator fan motor stopped or slowed — Second: the fan lives behind the freezer rear panel and is the wear item on this platform. Cold is still being made and simply never leaves the freezer.
- Condenser coil blanketed in dust, or its fan stalled — Third. Common in kitchens with pets, and it warms both compartments together rather than splitting them.
- Air damper stuck closed between compartments — Uncommon but real on models that meter fresh-food air through a motorised damper; it starves one side only.
- Sealed-system or compressor fault — Last. It is the least frequent cause on these cabinets and the only one on the list that is never an owner repair.
Check in this order, and why
- Listen at the freezer for the evaporator fan — It separates the two most likely causes in seconds and needs nothing but an open door and a held door switch.
- Look at the freezer rear panel for a frost slab — Confirms the defrost path if the fan itself is turning.
- Pull the cabinet out and feel the condenser area — Only worth doing once the first two are clean, because a dirty condenser warms both sides rather than one.
- Watch the fresh-food vents for airflow — The last owner-side observation before the panel comes off, which is where a technician takes over.
What an owner can safely do
- Empty both compartments and leave the doors open to defrost fully — Cold that returns after a full manual defrost is a defrost-system verdict, not a guess.
About 480 min
- Hold the freezer door switch in and listen for the fan — A silent fan with a clear evaporator is the fan itself.
About 5 min
- Vacuum the condenser coil and the fan grille at the back or base — Dust on the coil produces exactly this symptom and costs nothing to remove.
Tools: vacuum, soft brushAbout 20 min
- Move perishables to a cooler with ice while you work — Food safety comes before diagnosis.
Tools: coolerAbout 10 min
- Stop at the point where a panel must come off to reach the heater or sensor — That is where the owner side of this fault ends.
Before any panel comes off
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Leave the freezer door switch wired as it is, because it controls the fan you are trying to hear. Refrigerant work is licensed work and needs recovery equipment, so nothing on the sealed system is an owner job. A refrigerator holds food safely at 40 °F (4 °C) or below, so treat a compartment that has been warmer than that for hours as a food-safety decision, not just a repair one.
When to hand it over
Call once a full manual defrost restores cold, because that result names a defrost component behind the rear panel rather than anything you can reach. Call as well if the evaporator fan is silent with no ice around it, if the condenser is clean and both compartments are still drifting up, or if you see oil residue on the tubing near the compressor. Oil outside the tubing means the sealed system is open, and every hour it keeps running after that raises what the repair costs.
Other faults on this cabinet
What this page does not cover
This page is written for the appliance class under this badge, not for one family or one model line. Where a family-specific or model-specific page exists for your cabinet, that page is the more precise answer and is linked below; go there first if your model is named. Deliberately absent here: defrost sensor resistance values, board connector positions, wiring colours and part numbers, all of which differ between the side-by-side and French-door platforms and belong on the page for that family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
