Lg Air Conditioner Error 10

⚡ Quick Answer: The LG air conditioner error code 10 indicates a communication failure between the indoor and outdoor units, often linked to fan or sensor issues. It ... ✅ DIY Fixable

What Does Error 10 Mean?

The LG air conditioner error code 10 indicates a communication failure between the indoor and outdoor units, often linked to fan or sensor issues. It can cause the unit to stop operating, with symptoms such as the display showing '10' or 'CH10' and the fans failing to function properly. Common causes include a malfunctioning discharge temperature sensor, an indoor fan feedback fault, or loose wiring connections. Taking prompt action can help restore normal operation.

Common Symptoms:

  • Unit stops operation and displays 10/CH10
  • Indoor or outdoor fan not operating as expected
  • System does not start or shuts down shortly after start

Possible Causes

  • Discharge temperature sensor open/short (outdoor unit) (medium)
  • Indoor unit fan feedback fault/Hall effect sensor issue (medium)
  • Loose or faulty wiring between sensors/fans and control PCB (medium)

How to Fix Error 10

DIY Fix Basic checks and reset

  1. Turn off the unit and disconnect power at the breaker or plug.
  2. Wait 5–10 minutes to allow internal modules to reset.
  3. Restore power and restart the air conditioner to see if error clears.

Technician Only Inspect and repair sensors/fan wiring

  1. Visually inspect wiring harnesses between indoor/outdoor units and control PCBs for breaks, corrosion, or loose connections.
  2. Test the outdoor discharge temperature thermistor and indoor fan Hall effect sensor with appropriate tools (multimeter/diagnostics).
  3. Replace faulty sensor or repair wiring as needed.
  4. Verify correct operation after repairs.

Parts needed: Outdoor discharge temperature sensor (thermistor), Indoor fan motor/Hall effect sensor assembly, Wiring harnesses, Control PCB (if damaged)

🛑 When to Call a Pro:
  • If error persists after power reset and basic visual checks.
  • If fan does not spin freely, shows mechanical blockage, or unusual noise occurs.
  • If you are not trained in HVAC electrical diagnostics.

Technical Specifications

wattage N/A
component Control Board
resistance N/A
part_number LG 6711A20012B
voltage_rating 220V AC

Common Questions

What does 10 error mean on lg air conditioner?

Error 10 indicates a communication failure between indoor and outdoor units, typically involving fan or sensor issues.

Can I fix lg air conditioner 10 error myself?

Yes, you can try a basic reset by turning off the unit and restoring power after 5-10 minutes.

How much does it cost to fix 10 error?

Repair costs range from $150 to $500+, depending on parts and labor needed.

When should I call a technician for 10?

Call a technician if the error persists after resetting, or if you notice mechanical issues or unusual noises.

Sources & References

Data last verified: 2026-01-10

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