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
- Turn off the air conditioner and disconnect power at the breaker or plug.
- Wait about 5 minutes to allow the unit to fully reset.
- Ensure there are no loose or visibly damaged cables around the outdoor unit.
- Restore power and observe if the CH41 error reappears.
Technician Only Diagnose and replace faulty outdoor sensor or repair wiring
- Use a multimeter to test the outdoor unit D‑pipe temperature sensor for open or short circuits.
- Inspect the harness and connectors between the outdoor sensor and the outdoor PCB for corrosion, breaks, or poor contact.
- Replace the outdoor temperature sensor if out of specification.
- Verify proper communications and sensor readings after replacement.
Parts needed: Outdoor temperature sensor, Outdoor unit wiring harness/connectors
- 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
Next step
Choose the next step for 41
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Temperature Sensor
Monitors the internal temperature to ensure correct operation and prevent overheating.
- Typical part-only price
- $15 - $35
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Wiring Harness
Connects controls, sensors, motors, and other electrical components inside the appliance.
Model-compatible Air Conditioner parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. We may earn a commission from other qualifying purchases or service requests made through links on this page, at no additional cost to you. Recommendations are based on repair relevance, not commission rate.
Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Air Conditioner Fin Cleaner
For routine cleaning of accessible coil fins when permitted by the manufacturer. Disconnect power and follow product and appliance instructions.
Model-Compatible Washable AC Filter
A reusable filter option only where the appliance supports one. Match the full model, dimensions, and filter specification.
Compatibility check required: use the complete appliance model and compare the existing filter, bag, or specification before ordering.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
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: 2026-07-26
User Comments (0)
Share your experience or solution below.
Please login to post a comment.
Be the first to comment!