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LG Refrigerator

LG Refrigerator dH error

Defrost system fault

Needs a technicianFrom brand’s official support

Try a reset once. If it comes back, a trained technician should repair it.

Also shown as: FdH dHF

What it means

The automatic defrost heater did not melt the ice on the cooling coil in time.

Common causes

  • Faulty defrost heater or thermal fuse
  • Defrost sensor fault
  • Blocked defrost drain

Try this at home first

Tick each step as you go

When to call a technician

If ice builds up again, a technician should check the heater, fuse and sensor.

Safety first

Always switch off at the wall socket or MCB before touching any part. Do not open the outdoor unit, control boards or gas pipes yourself — they carry high voltage and pressure.

Frequently asked questions

What does dH mean on a LG Refrigerator?

Defrost system fault. The automatic defrost heater did not melt the ice on the cooling coil in time.

Can I fix LG Refrigerator error dH myself?

You can try a reset first: Defrost manually: unplug and keep the doors open for 4–6 hours (store food elsewhere). If the code returns, call a technician.

Is it safe to keep using the Refrigerator with dH?

Avoid repeated restarts; running with this fault can cause more damage.

Other LG Refrigerator codes

rS Fridge temperature sensor fault r2 Lower fridge temperature sensor fault dS Defrost sensor fault rT Ambient (outside) temperature sensor fault IS Ice maker temperature sensor fault SS Water tank temperature sensor fault FF Freezer fan motor fault rF Fridge fan motor fault CF Condenser fan motor fault IF Ice maker fan motor fault It Ice maker fault FU Compressor / cooling cycle fault

All LG Refrigerator error codes

Sources

We write every explanation in our own words from these references.

Last checked: 2026-10-20