What does Er dH mean?
The defrost system did not complete properly.
Common causes
- Defrost heater failure
- Defrost sensor or fuse
- Control board
What you can safely check
- Schedule service — a failed defrost causes frost build-up and warm temperatures
Safety first. Unplug the appliance (and shut off gas or water where relevant) before inspecting it. Codes and procedures vary by model — check your owner’s manual.
When to call a technician
If the code comes back after these checks, or you see leaks, burning smells or tripped breakers, stop using the refrigerator and schedule a technician. Our team repairs LG refrigerators every week.
Frequently Asked Questions
What does LG refrigerator error code Er dH mean?
The defrost system did not complete properly.
How do I fix LG code Er dH?
Schedule service — a failed defrost causes frost build-up and warm temperatures.
When should I call a technician?
If the code comes back after these checks, or you see leaks, burning smells or tripped breakers, stop using the refrigerator and schedule a technician. Our team repairs LG refrigerators every week.
Other LG refrigerator codes
Er CFCondenser fan errorEr COCommunication errorEr FFFreezer fan errorEr IFIce maker fan errorEr rSRefrigerator sensor error
Updated Oct 29, 2026