Make sure the fridge has power, the temperature dial wasn’t bumped, and the vents inside aren’t blocked. A fridge packed too tightly can’t circulate cold air.
Dirty condenser coils, a faulty evaporator fan, a failed compressor or start relay, low refrigerant, or a defective thermostat can all cause a warm fridge.
If the freezer works but the fridge is warm, or the unit runs without cooling, call for a same-day diagnosis before your groceries spoil.