What to check first
Can I keep using it?
Food safety first
You can usually keep it powered while checking temperatures, but food safety comes first if cooling is weak or power was interrupted.
- Safe next step
- Check actual compartment temperature, move perishable food to safe cold storage if needed, and use the model manual for any further steps.
- Stop when
- Food is thawing, temperatures are unsafe, the unit is not cooling, or electrical symptoms appear.
Electrical warning: stop and verify
Do not keep using the appliance if the code points to voltage, wiring, control power, burning smell, smoke, or a possible miswired supply.
- Safe next step
- Use only safe owner-level power checks, then involve a qualified technician or electrician when the source points to wiring or supply voltage.
- Stop when
- Breakers trip, lights dim, the appliance smells hot, wiring may be miswired, or the warning returns after a safe reset.
Safety boundaries
Safe first
- Match the exact brand, appliance type, and displayed code first.
- Use the model manual as the final authority for access steps.
- Disconnect power before any service-access step.
Do not do this
- Do not use other cycles as a workaround unless the manual allows it.
- Do not bypass locks, float switches, leak sensors, or other safety systems.
Common causes include
- Defrost cycle not reaching the expected temperature
- Frost or ice buildup
- Defrost system issue
Basic checks
- Check whether cooling or freezer temperature is affected.
- Move perishable food to safe storage if temperatures are unsafe.
- Use only the safe reset path before requesting service.
Reset or retry steps
- LG describes unplugging the refrigerator for 2 minutes to reset it, then allowing defrost to run again.
When to call a technician
- Request service if dH returns after the reset.
- Call service if cooling is affected or frost buildup returns quickly.
FAQ
What does LG Refrigerator code dH usually mean?
Usually indicates that the refrigerator spent too long trying to complete defrost.
Can I keep using the refrigerator with code dH?
Limit use to the owner-level checks described here and in the model manual. Stop using the appliance if the code returns, the appliance behaves abnormally, or a safety warning applies. Do not chip ice from internal evaporator areas with sharp tools.
When should I call a technician for LG dH?
Request service if dH returns after the reset. Call service if cooling is affected or frost buildup returns quickly.