LG Refrigerator Error Code Er rr — What It Means & How to Fix It

What Does This Error Mean?

The Er rr error means your LG refrigerator's compressor relay has a fault. The relay that starts the compressor is not functioning correctly. The compressor may not start, which means the fridge will stop cooling.

Affected Models

LRMVS3006S
LRFXS2503S
LRFDS3006S
LG refrigerators with linear inverter compressors

Common Causes

Start relay on the compressor has failed
Compressor overload protector has tripped
Compressor itself has developed an internal fault
Inverter control board is not sending the correct start signal
Power supply voltage irregularities causing relay issues

How to Fix It

Unplug the refrigerator for 5–10 minutes.

This gives the compressor and relay a full reset. An overheated relay may recover.
Check that the fridge has adequate ventilation.

At least 2–3 inches of clearance on the back and sides. Poor airflow causes overheating.
Clean the condenser coils at the back or bottom of the fridge.

Dusty coils force the compressor to work harder and can cause relay tripping.
Plug the fridge back in and listen for the compressor starting.

After 3–5 minutes, you should hear a low hum from the compressor.
If the compressor doesn't start or Er rr returns, call a technician immediately.

Check your warranty first — LG's 10-year compressor warranty may cover this repair at no cost.

When to Call a Professional

Compressor relay and compressor repairs require certified technicians. Refrigerant lines and high-voltage components are involved. LG offers a 10-year compressor warranty — check if yours is covered. Expect costs of $200–$600+ if out of warranty. Contact LG support immediately.

Frequently Asked Questions

Does LG warranty cover the Er rr compressor relay error?

LG provides a 10-year warranty on the linear compressor on many models. The relay is part of the compressor assembly. Register your appliance at LG's website and contact them before paying for any repair.

How do I know if my LG refrigerator compressor is running?

Place your hand near the bottom back of the fridge. You should feel vibration and hear a low hum. If it's completely silent and the fridge isn't cooling — the compressor isn't running.

How much does an LG refrigerator compressor relay replacement cost?

The start relay part is inexpensive — usually $15–$30. But if the compressor itself is faulty, replacement can cost $400–$700 with labor. Always verify warranty coverage before committing to repairs.