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LG Error Codes & Troubleshooting

Complete error code database and troubleshooting guide for LG systems. Find solutions to common issues or contact our experts.

Emergency: 0405 133 761

LG Error Codes

Complete error code reference for LG systems. Each error code includes severity level, description, and troubleshooting steps.

P1
HIGH
AI Prediction System Error

Machine learning module malfunction

Restart system. Update firmware if available.

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P2
HIGH
Indoor Sensor Fault

Indoor temperature sensor error

Clean sensor. Power cycle unit.

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P3
HIGH
Outdoor Sensor Fault

Outdoor sensor malfunction

Check sensor area for debris.

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P4
HIGH
Indoor Fan Error

Indoor blower not working

Clean filter. Check power supply.

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P5
HIGH
Outdoor Fan Error

Outdoor fan malfunction

Check for blockage. Clean unit.

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P6
URGENT
Refrigerant Leak

Low refrigerant pressure

Professional service for leak detection.

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P7
URGENT
High Discharge Pressure

Abnormal pressure detected

Shut down. Check condenser.

Call Now
P8
HIGH
Compressor Protection

Compressor overload detected

Allow cooling. Check airflow.

Call Now
P9
URGENT
Refrigerant Type Error

Incompatible refrigerant

Professional evacuation and recharge.

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P10
HIGH
High Discharge Temp

Abnormal output temperature

Clean condenser. Check airflow.

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P11
MEDIUM
Remote Not Responding

Remote control connection lost

Replace batteries. Check signal.

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P12
MEDIUM
Defrost Failure

Winter heating defrost error

Check outdoor coil ice.

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P13
LOW
Mode Selection Error

Wrong operating mode

Select correct mode (COOL/HEAT).

Call Now
P14
MEDIUM
Filter Alert

Air filter needs replacement

Replace filter immediately.

Call Now
P15
MEDIUM
Outdoor Icing

Outdoor coil frozen

Manual defrost or COOL mode.

Call Now
P16
HIGH
Power Supply Issue

Electrical problem detected

Check circuit breaker. Verify wiring.

Call Now
P17
HIGH
TXV Malfunction

Expansion valve error

Refrigeration service required.

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P18
HIGH
Water Drainage Error

Condensate drain blocked

Clear drain line immediately.

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P19
MEDIUM
Noise Detection

Abnormal unit noise

Professional inspection recommended.

Call Now
P20
URGENT
Network Disconnection

Unit/indoor communication lost

Check control cable. Power reset.

Call Now
Preventative Care

LG Maintenance Tips

Regular maintenance helps prevent error codes and keeps your system running efficiently. Follow these LG-specific tips for optimal performance.

Still Need Help?

Our licensed technicians specialize in LG systems and are available 24/7 for emergency repairs and expert support.

Call Now: 0405 133 761Book Service

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