Lg Air Conditioner Error 41

⚡ Quick Answer: The LG air conditioner error 41 indicates a communication failure between the indoor and outdoor units, often triggered by an issue with the outdoor t... ✅ DIY Fixable

What Does Error 41 Mean?

The LG air conditioner error 41 indicates a communication failure between the indoor and outdoor units, often triggered by an issue with the outdoor temperature sensor (D-pipe). This can result in the unit displaying CH41 and ceasing cooling or heating cycles. Common causes include a short or open circuit in the sensor or wiring connection problems.

Common Symptoms:

  • Unit stops operating and displays CH41 on the indoor or outdoor unit display
  • Cooling/heating cycles may cease when the error is present
  • Outdoor unit may not run properly

Possible Causes

  • Abnormal outdoor refrigerant line temperature sensor reading due to short circuit or open circuit (medium)

How to Fix Error 41

DIY Fix Perform basic reset and check for obvious wiring issues

  1. Turn off the air conditioner and disconnect power at the breaker or plug.
  2. Wait about 5 minutes to allow the unit to fully reset.
  3. Ensure there are no loose or visibly damaged cables around the outdoor unit.
  4. Restore power and observe if the CH41 error reappears.

Technician Only Diagnose and replace faulty outdoor sensor or repair wiring

  1. Use a multimeter to test the outdoor unit D‑pipe temperature sensor for open or short circuits.
  2. Inspect the harness and connectors between the outdoor sensor and the outdoor PCB for corrosion, breaks, or poor contact.
  3. Replace the outdoor temperature sensor if out of specification.
  4. Verify proper communications and sensor readings after replacement.

Parts needed: Outdoor temperature sensor, Outdoor unit wiring harness/connectors

🛑 When to Call a Pro:
  • If error persists after reset and basic visual checks
  • If you are not comfortable working with electrical components or accessing the outdoor unit
  • If diagnostics show intermittent sensor readings

Technical Specifications

wattage N/A
component Communication Cable
resistance N/A
part_number LG 6711A20040A
voltage_rating 230V AC

Common Questions

What does 41 error mean on lg air conditioner?

Error 41 indicates a communication failure between indoor and outdoor units due to an outdoor temperature sensor issue.

Can I fix lg air conditioner 41 error myself?

Yes, you can perform a basic reset and check for wiring issues before calling a technician.

How much does it cost to fix 41 error?

Estimated repair costs range from ¥5,000 to ¥20,000 for parts, with additional labor costs.

When should I call a technician for 41?

Call a technician if the error persists after a reset, or if you're uncomfortable working with electrical components.

Data last verified: 2026-01-11

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