Can I fix LG code dH myself?

Start with these safe checks: Request service. Meanwhile, keep doors closed and don't overload the freezer. Defrost system repairs need a technician.

When should I call a technician for code dH?

Defrost system repairs need a technician. Don't open the sealed refrigerant system, cut or braze lines, or add refrigerant. That needs an EPA-certified technician. Turn power off at the breaker or disconnect before opening any panel, and leave capacitors, compressors and control boards to a pro: they can hold a dangerous charge even with the power off.

LG Refrigerator Error Code dH / Er dH / FdH: Defrost failure

What dH means

The defrost sensor's temperature didn't rise enough during defrost, so ice may be building up on the evaporator.

Also shown as: Er dH, FdH, dHF, depending on the model.

Likely causes

Defrost heater or thermal fuse fault
Clogged defrost drain

Safe first checks

Request service. Meanwhile, keep doors closed and don't overload the freezer.

When to stop

Defrost system repairs need a technician.

Checked against: LG USA Support: LG Refrigerator digital and analog error codes. Codes can differ by model and year, so confirm with your owner's manual.