What does LG Refrigerator Running Constantly - Causes & Fix mean?

Usually a door gasket not sealing or a warm cabinet after moving/power loss. Check the door seal and wait 24–48 hours after any outage.

How do I fix LG Refrigerator Running Constantly - Causes & Fix?

Follow the step-by-step diagnosis below. The most likely fix is identified by checking power, sensor resistance, and control-board signals in order — using a multimeter and the part numbers documented in the parts reference table.

Can I keep running the equipment with this fault active?

Generally no. Faults on Appliance units are emitted when a sensor, safety, or control circuit is outside its operating envelope. Running through an active fault risks compressor, heater, or control-board damage. Diagnose and clear the fault first.

What part is most commonly replaced for LG Refrigerator Running Constantly - Causes & Fix?

The most frequently replaced parts for LG Refrigerator Running Constantly - Causes & Fix are listed in the Parts Reference section of this guide with OEM part numbers and typical price ranges. Check the table for direct replacements.

Is LG Refrigerator Running Constantly - Causes & Fix a DIY repair or do I need a technician?

Sensor swaps, fan motor replacements, and condenser cleaning are typical DIY-level repairs. Anything involving refrigerant, gas, or high-voltage (>240V) work requires a licensed technician for both safety and code-compliance reasons.

LG Refrigerator Running Constantly - Causes & Fix

LG Refrigerator Running Constantly — What’s Happening

When an LG refrigerator runs constantly, the compressor is staying on because the unit has not reached its set temperature or because cold air is escaping. LG states that the refrigerator may continue operating if cold air is lost through a poorly sealed door gasket, if the temperature is set to Medium or higher, or if the cabinet is still warm after a recent move, service, repair, or power interruption.

Once the set temperature is reached, the compressor should normally cycle on and off. Continuous running means the system is still working to recover temperature or is losing cooling capacity faster than it can replace it.

Jump to Fix

Most Likely Causes

Door not closing properly or weakened magnetic gasket Warm air infiltrates through a weak, dirty, warped, or damaged door seal, preventing the cabinet from reaching setpoint.
Recent move, service, or power outage LG notes the refrigerator may run continuously for a day or longer while it pulls down temperature after relocation, repair, or a power interruption that warmed the cabinet.
Temperature setting too warm Setting left at Medium or higher keeps the compressor running longer to maintain target temperature.
Food or items blocking door closure or internal vents Obstructions prevent full closure or block airflow inside the cabinet, slowing cooling.
Dirty condenser coils Dust or debris on the coils reduces heat rejection and forces longer compressor run time to achieve setpoint.
Failed condenser fan or poor airflow A fan that does not run or is blocked prevents proper heat exchange and extends compressor operation.
Sealed system or compressor failure If temperature does not recover after basic corrections, the compressor, inverter control board, or sealed system refrigerant circuit may have failed.

How to Diagnose and Fix

Verify the complaint by checking actual cabinet temperatures and confirming the compressor is truly running without cycling off.
Confirm the door fully closes and inspect the magnetic gasket for weak adhesion, dirt, warping, tears, or gaps.
Perform a seal check and confirm no food or items are blocking closure or internal vents.
Check the temperature setting and lower it one step if it is at Medium or above.
If the unit was recently moved, serviced, or lost power, allow 24 to 48 hours for temperature stabilization before replacing parts.
Check condenser coil cleanliness and airflow around the cabinet, cleaning coils if dusty or obstructed.
Inspect the condenser fan and evaporator air movement for proper operation.
If temperature is not recovering after basic corrections, check compressor operation, inverter control board output voltage with a meter, and evaluate the sealed system for refrigerant or compressor failure.

Parts You Might Need

Part	Notes
LG refrigerator door gasket	Amazon \| Model-specific magnetic seal, replace if weak, torn, or warped.
LG condenser fan motor	Amazon \| Replace if fan does not run or is noisy when compressor is on.
LG refrigerator inverter control board	Amazon \| Replace if compressor output voltage is abnormal or cooling is absent with a working compressor.

Seeing a code on the display? These match this problem:

When to Call a Pro

Call a pro if the refrigerator continues running constantly after you have cleaned the door seal, confirmed proper closure, adjusted the temperature setting, and waited 24 to 48 hours for recovery. A technician will use a meter to check inverter board output, test the compressor and sealed system, and diagnose refrigerant or control failures that require EPA-certified refrigerant handling and board-level diagnostics.