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LG Refrigerator

LG Refrigerator FU error

Compressor / cooling cycle fault

Needs a technicianFrom brand’s official support

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

What it means

The compressor is locked or drawing abnormal current, or the fridge is not cooling as expected.

Common causes

  • Low or fluctuating voltage
  • Compressor or inverter board fault
  • Refrigerant problem

Try this at home first

Tick each step as you go

When to call a technician

Call a technician soon and store perishable food elsewhere.

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 FU mean on a LG Refrigerator?

Compressor / cooling cycle fault. The compressor is locked or drawing abnormal current, or the fridge is not cooling as expected.

Can I fix LG Refrigerator error FU myself?

You can try a reset first: Unplug for 10 minutes and restart. If the code returns, call a technician.

Is it safe to keep using the Refrigerator with FU?

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

Other LG Refrigerator codes

dH Defrost system 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 CO Communication error (display ↔ main board) C1 Communication error (display ↔ main board) gF Water flow problem CH Refrigerant leak detected CL Refrigerant leak detected Lo Temperature outside working range

All LG Refrigerator error codes

Sources

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

Last checked: 2026-10-20