Error code
-23°C LED LAMP
Meaning
Refrigerator freezer not defrosting properly
Critical
What to do
Why this happens
Possible causes include lost defrost heater contact, poor contact in the heater circuit, short or broken heater wire circuits, or a faulty temperature fuse.
How to fix it
Inspect heater element for damage and thermal fuse for burn marks; replace as needed
SourceSamsung service manual