A refrigerator that quits cooling is one of the few appliance problems on a clock. Before you call anyone, you can narrow it down yourself, and sometimes fix it. Here is the order a tech actually works through, from the cheapest cause to the priciest.
This is the brand-agnostic version. If you have a specific unit, we have deeper writeups for a Sub-Zero that stopped cooling and for LG refrigerators.
Start here: the 4 things that aren’t broken
Most “not cooling” calls that turn out cheap come down to one of these. Check them first.
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Power and the dial. Confirm the unit has power at the outlet, not a tripped GFCI or a half-pushed plug. Then check the temperature dial. A bumped thermostat or a kid turning a knob happens more than you would think. Fridge should read 37 to 40 F, freezer at 0 F.
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Vacation, demo, or showroom mode. Many newer fridges have a display mode that shuts cooling off. If the panel shows “OFF,” “demo,” or a store-display icon, hold the mode buttons per the manual to exit it. This is a five-minute fix mistaken for a dead fridge constantly.
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An overpacked interior. Cold air has to circulate. If you crammed the fridge full and blocked the rear vents, the air cannot move and the unit reads warm. Pull items off the back wall and the vents and give it a day.
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A door that is not sealing. A gasket pulled loose, or a jar holding the door cracked open overnight, bleeds cold and runs the compressor nonstop. Run a dollar bill across the seal. If it slides out with no drag anywhere, the gasket needs replacing.
If none of these is it, the cause is mechanical. Keep the door shut and read on.
The 5 real failures, cheapest to worst
5. Dirty condenser coils. The coils shed heat. Packed with dust, the fridge runs constant and still drifts warm. Vacuum them behind the kickplate or the rear panel. Do this every 6 to 12 months.
6. A dead condenser fan. That fan pulls air across the coils. When the motor seizes, the unit cannot shed heat. You will often hear it: silence where there should be a low whir, or a compressor that is hot to the touch and never cycles off.
7. A failed evaporator fan. This is the fan inside, behind the freezer panel, that pushes cold air up to the fridge. When it dies, the freezer stays cold and the fridge goes warm. It is the single most common reason for a cold-freezer, warm-fridge split.
8. A defrost fault or a frosted coil. If the defrost heater, timer, or sensor fails, the evaporator coil ices over into a solid block and air can no longer move through it. The tell is a fridge that worked, quit, and now has frost building behind the freezer panel.
9. A control-board or sealed-system failure. A main control board can stop commanding the compressor. And at the worst end, a sealed-system refrigerant leak means the unit can never reach temperature no matter how hard it runs. Both need a tech. The sealed system specifically requires EPA-certified handling, not a DIY recharge.
When to stop and call a pro
Call when the freezer is cold but the fridge is warm, when you find frost building behind the freezer panel, when the compressor is hot and never shuts off, or when the simple checks above did nothing after 24 hours. Those point at fans, defrost, the board, or the sealed system, and they need gauges and parts.
ADRIUM has serviced Bay Area refrigerators since 2021. We are licensed (CSLB #1136642), EPA-certified for sealed-system work (#1279674151528), BEAR-registered (#50788), and A+ with the BBB. The diagnostic is $75, credited to the repair if you move forward, and you get a written estimate before any wrench work. See our refrigeration repair service or the full refrigerator repair guide.
Refrigerator down and food on the line? Call (925) 999-4095 or email [email protected]. We cover the Tri-Valley and the surrounding cities, often same-day.
FAQ
Why is my refrigerator not cooling but the freezer still works? Almost always airflow or defrost, not the compressor. A dead evaporator fan, a frosted-over coil from a defrost fault, or a stuck air damper keeps the freezer cold while the fridge goes warm.
Can dirty coils really stop a fridge from cooling? Yes, it is one of the most common causes. Dusty condenser coils trap heat, so the unit runs nonstop and still drifts warm. Vacuum them every 6 to 12 months.
How long should I wait before deciding it’s broken? Give it 24 hours with the door kept shut after any adjustment. A fridge that lost its cold needs most of a day to recover.
Can I recharge the refrigerant myself? No. A sealed-system leak needs EPA-certified gauges, vacuum, and recharge. A DIY can will not fix a leak and is illegal to vent.