LG dH error code
Refrigerator
LG error code dH on a refrigerator means: Defrost heater fault — frost can build up and block airflow. This guide walks you through the most common causes, step-by-step troubleshooting, and replacement parts that typically resolve dH on LG refrigerators.
Buy the replacement part
MPN: W10316760
$18.99
Safe to keep using?
Stop using
No immediate safety hazard detected, but monitor during use.
- • Unplug the appliance before inspection.
- • Do not continue using the appliance until the cause is identified.
Likely causes
Many codes resolve with cleaning, resetting, or reconnecting.
Check: Power-cycle the appliance and check for obvious blockages or loose connections.
Est. cost: $0–$0
Wear or electrical failure of an internal part.
Check: If basic checks fail, the faulty component likely needs replacement.
Est. cost: $0–$100
What it means
Defrost heater fault — frost can build up and block airflow.
How to fix it
- Unplug the refrigerator or turn off power at the breaker before inspecting any components.
- Confirm the error code dH is still displayed after a power reset — hold power for 10 seconds, then restart.
- Check the most common cause for dH: Defrost heater fault — frost can build up and block airflow.
- Inspect hoses, connections, and visible wiring for damage, clogs, or loose fittings.
- If basic checks don't clear the code, the fix often requires a replacement part (see recommended parts below).
- Reassemble, restore power, and run a test cycle. If dH returns, the faulty component likely needs replacement.
Call a pro when: Call a technician if you smell burning, see sparking, hear grinding from the motor, or the code returns after replacing the suspected part.
FAQ
What does LG dH mean?
Defrost heater fault — frost can build up and block airflow.
Can I fix LG error dH myself?
Many dH errors can be fixed DIY if you're comfortable with basic tools. Start with the steps above. If the issue involves electrical components or the code returns after replacing parts, call a professional.
Do I need a replacement part for dH?
Often yes — error dH frequently points to a failed component. Check the recommended parts below for direct replacements.
Other LG Refrigerator codes
Prevent this problem next time
- Follow manufacturer maintenance schedule
- Address small issues before they worsen
Sources
Manufacturer meaning
Defrost heater fault — frost can build up and block airflow.
FixApplianceCode guidance
Start with basic checks for LG dH before ordering parts.
Source type: Part database
Source: ModelPartFinder + FixApplianceCode editorial
Last reviewed: 2026-08-08
FixApplianceCode may earn a commission when you purchase through qualifying links, at no additional cost to you. Affiliate disclosure