Symptom hub
Refrigerator not cooling error codes
Compare refrigerator codes that usually point to cooling loss, freezer warming, frost, defrost, or food-safety warnings.
Use this as a narrowing step
A symptom can point to several different parts or installation issues. Use this hub to find likely code records, then confirm the exact code on the appliance display.
Coverage status
This page is published as a comparison hub for matching records. Open the exact code record before using any guidance.
How to narrow it
Observe which compartment is warming, whether frost is visible without removing panels, and whether the code followed a power interruption. Keep refrigerator doors closed while checking the exact display and food temperatures. Fan, defrost, sensor, and power records can all present as reduced cooling, so the symptom does not identify a part. Use the food-safety checklist separately, and escalate when the code returns or safe temperatures cannot be maintained.
Decision trees
Matching records
rFError code
Most LG sources describe rF as an abnormality with the refrigerator compartment fan motor.
FFError code
LG documents FF as an abnormality with the freezer compartment fan motor.
dHError code
This code commonly appears when the refrigerator spent too long trying to complete defrost.
dSError code
Manufacturer guidance usually ties dS to a short or disconnection in a refrigerator defrost sensor.
5EError code
Samsung documents 5E as a fridge defrost-sensor alert that may accompany a cooling or defrost problem.
FFError code
GE documents FF as a warning that frozen food should be checked because freezer temperature is rising too high.
PFError code
Commonly logged when power to the refrigerator has been interrupted.
21EError code
Samsung documents 21E as a freezer-fan feedback alert, often linked to frost, a door-seal gap, or a fan problem.