Refrigerator Not Cooling Troubleshooting

Measure the temperature, protect perishable food, and check the controls, doors and airflow before seeking service. A light that works does not establish that the cooling system works.

Browse troubleshooting guides

1. Unusual refrigerator noise
2. Refrigerator leaking water
3. Refrigerator symptom guides

Protect the food first

Use an appliance thermometer rather than relying on how the air feels. Keep the refrigerator at 40°F or below and the freezer at 0°F or below. Move food to reliable cold storage when cooling fails. During an outage, keep doors closed; an unopened refrigerator keeps food cold for about four hours. That is not a guarantee once food has warmed. Consult the FoodSafety.gov food-by-food discard chart; do not taste food to decide whether it is safe.

Before you start

Find the model number and its matching owner manual. These checks do not diagnose a failed part. Do not remove service panels, probe live wiring, bypass controls or work on refrigerant tubing. Stop and seek qualified service for smoke, unusual odors, electrical damage or persistent trouble. Do not reach for a plug or operate electrical equipment while standing in water.

Checks from a matching LG manual

Manual scope: the LG examples below apply to LRFWS2906* and LRMWS2906*, manual MFL70761736 Rev.05_012422. Other models can have different controls and maintenance access. Read the LG owner manual (retailer-hosted copy).

1. Confirm cooling is enabled and check for demonstration mode using your manual.
2. Close the doors fully and move food away from interior air vents.
3. Distinguish a new installation from an established cooling failure: the manual allows up to 24 hours for a newly installed unit to reach its setting. Protect food during that interval.
4. For these models, vacuum the condenser cover and vents only; do not remove the condenser panel.

Cooling checks: pages 41–43. Persistent circuit or GFCI trouble belongs with an electrician; never increase fuse capacity. A thermostat, fan or compressor cannot be condemned from a temperature reading alone.

Prepare for a service visit

Record the model and serial number, measured temperatures, when the symptom began, and any recent installation or filter change. Describe what you observed rather than ordering a part from a symptom alone. Check warranty coverage and obtain a diagnosis and written repair estimate before comparing repair with replacement. Any replacement part must match the exact model and manufacturer part number.

Manual sources reviewed September 22, 2026. Check the manual matching your appliance for revisions.