Freezer cold but refrigerator warm, food spoiling in fridge section, no error code displayed.

Safety first: Unplug before removing internal panels.

Step-by-step checks:

• 1. Check vents: Ensure vents at the back of the fridge and freezer are not blocked by food packages.
• 2. Listen for fan: With the freezer door switch held closed, listen for the evaporator fan. If silent, inspect the fan motor and wiring.
• 3. Inspect for ice build-up: Remove the freezer rear panel. If the evaporator is a solid block of ice, perform a full manual defrost and then investigate defrost system components.
• 4. Check damper: On models with a damper, access it from the fridge rear wall. Ensure it opens and closes freely and is not jammed with ice or debris.

When to call a technician: If fan and damper are functional but the fridge remains warm, further diagnosis of sensors and control logic is needed.