Start by confirming the temp properly: put a fridge thermometer in a glass of water mid‑shelf overnight (aim 3–5°C/37–41°F; freezer −18°C/0°F). Then reset and cover the basics-unplug 5 minutes, set controls to the middle, and let it stabilize for 24 hours. Don’t overpack or block vents, clean the condenser coils, and make sure it has good ventilation. Check door seals with a paper test and that the internal/condenser fans run; if there’s frost on the back panel, fully defrost for 24 hours and clear the drain. Freezer OK, but fridge warm usually means an iced/stuck air damper or fan; both sections’ warm points to dirty coils or a non‑running condenser fan.